Guaranty and Declaration
Copyright
© 2022 RIGOL TECHNOLOGIES CO., LTD. All Rights Reserved.
Trademark Information
RIGOL
®
is the trademark of RIGOL TECHNOLOGIES CO., LTD.
Notices
• RIGOL products are covered by P.R.C. and foreign patents, issued and pending.
• RIGOL reserves the right to modify or change parts of or all the specifications and pricing
policies at the company's sole decision.
• Information in this publication replaces all previously released materials.
• Information in this publication is subject to change without notice.
• RIGOL shall not be liable for either incidental or consequential losses in connection with the
furnishing, use, or performance of this manual, as well as any information contained.
• Any part of this document is forbidden to be copied, photocopied, or rearranged without prior
written approval of RIGOL.
Product Certification
RIGOL guarantees that this product conforms to the national and industrial standards in China as
well as the ISO9001:2015 standard and the ISO14001:2015 standard. Other international standard
conformance certifications are in progress.
Contact Us
If you have any problem or requirement when using our products or this manual, please contact
RIGOL.
E-mail: ser[email protected]
Website:
http://www.rigol.com
Section Description Page
List of Figures............................................................................................................................ VII
List of Tables...............................................................................................................................XII
1 Safety Requirement.....................................................................................................................1
1.1 General Safety Summary...................................................................................................1
1.2 Safety Notices and Symbols.............................................................................................3
1.3 Measurement Category..................................................................................................... 3
1.4 Ventilation Requirement....................................................................................................4
1.5 Working Environment.........................................................................................................4
1.6 Care and Cleaning................................................................................................................6
1.7 Environmental Considerations.........................................................................................6
2 Product Features.......................................................................................................................... 8
3 Document Overview...................................................................................................................9
4 Quick Start................................................................................................................................... 11
4.1 General Inspection.............................................................................................................11
4.2 Appearance and Dimensions.........................................................................................11
4.3 To Prepare for Use............................................................................................................. 12
4.3.1 Tilting the Oscilloscope for Easier Viewing...................................................... 12
4.3.2 Connecting to Power................................................................................................13
4.3.3 Turn-on Checkout......................................................................................................13
4.3.4 Replacing the Fuse....................................................................................................14
4.3.5 Setting the System Language............................................................................... 15
4.3.6 Connecting Probes....................................................................................................15
4.3.7 Function Inspection.................................................................................................. 15
4.3.8 Probe Compensation................................................................................................17
4.4 Product Overview.............................................................................................................. 17
4.4.1 Front Panel Overview............................................................................................... 18
4.4.2 Rear Panel Overview.................................................................................................24
4.4.3 User Interface Overview..........................................................................................26
4.5 Touch Screen Gestures.....................................................................................................28
4.5.1 Tap...................................................................................................................................28
4.5.2 Pinch&Stretch............................................................................................................. 29
4.5.3 Drag................................................................................................................................29
4.6 Parameter Setting Method.............................................................................................30
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DHO1000 User Guide
I
4.7 Using the Security Lock................................................................................................... 36
4.8 Accessing the Built-in Help System............................................................................. 36
4.9 Viewing the Option Information and Install the Option......................................37
5 Vertical System........................................................................................................................... 39
5.1 To Enable or Disable the Analog Channel.................................................................39
5.2 To Adjust the Vertical Scale............................................................................................41
5.3 To Adjust the Vertical Offset.......................................................................................... 42
5.4 To Specify Channel Coupling.........................................................................................43
5.5 To Specify Bandwidth Limit............................................................................................ 43
5.6 To Specify Input Impedance...........................................................................................44
5.7 To Invert a Waveform....................................................................................................... 44
5.8 To Set Probe.........................................................................................................................45
5.9 To Specify the Amplitude Unit...................................................................................... 48
5.10 To Adjust Bias......................................................................................................................48
5.11 To Specify the Skew...........................................................................................................48
5.12 To Turn the Channel Label Display On/Off............................................................... 49
6 Horizontal System.....................................................................................................................50
6.1 To Adjust the Horizontal Time Base............................................................................ 50
6.2 To Adjust the Horizontal Position................................................................................ 51
6.3 Zoom Mode (Delayed Sweep).......................................................................................52
7 Acquisition System....................................................................................................................55
7.1 Acquisition Mode...............................................................................................................55
7.2 Sampling Mode..................................................................................................................58
7.3 Sample Rate.........................................................................................................................58
7.4 Memory Depth................................................................................................................... 59
7.5 Horizontal Expansion Reference...................................................................................61
7.6 Roll Mode............................................................................................................................. 61
7.7 XY Mode................................................................................................................................62
8 Triggering the Oscilloscope................................................................................................... 65
8.1 Trigger Source.....................................................................................................................65
8.2 Trigger Level........................................................................................................................ 66
8.3 Trigger Mode.......................................................................................................................67
8.4 Trigger Coupling.................................................................................................................68
8.5 Trigger Holdoff....................................................................................................................69
8.6 Noise Rejection...................................................................................................................69
8.7 Trigger Type......................................................................................................................... 70
8.7.1 Edge Trigger................................................................................................................ 70
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8.7.2 Pulse Width Trigger.................................................................................................. 72
8.7.3 Slope Trigger............................................................................................................... 74
8.7.4 Video Trigger...............................................................................................................77
8.7.5 Pattern Trigger............................................................................................................80
8.7.6 Duration Trigger.........................................................................................................82
8.7.7 Timeout Trigger..........................................................................................................85
8.7.8 Runt Trigger.................................................................................................................87
8.7.9 Window Trigger..........................................................................................................90
8.7.10 Delay Trigger............................................................................................................... 92
8.7.11 Setup/Hold Trigger................................................................................................... 94
8.7.12 Nth Edge Trigger........................................................................................................97
8.7.13 RS232 Trigger..............................................................................................................99
8.7.14 I2C Trigger................................................................................................................. 102
8.7.15 SPI Trigger..................................................................................................................106
8.7.16 CAN Trigger...............................................................................................................108
8.7.17 LIN Trigger................................................................................................................. 112
8.8 Trigger Output Connector............................................................................................115
9 Math Operation.......................................................................................................................116
9.1 Arithmetic Operation..................................................................................................... 117
9.2 Function Operation.........................................................................................................120
9.3 FFT Operation...................................................................................................................124
9.4 Logic Operation............................................................................................................... 129
9.5 Digital Filter....................................................................................................................... 132
10 Measurements..........................................................................................................................137
10.1 Auto Scale..........................................................................................................................137
10.2 Auto Measurements.......................................................................................................138
10.2.1 Measurement Parameter......................................................................................138
10.2.1.1 Time Parameters..............................................................................................139
10.2.1.2 Count Values.....................................................................................................140
10.2.1.3 Delay and Phase Parameters...................................................................... 142
10.2.1.4 Voltage Parameters........................................................................................ 143
10.2.1.5 Other Parameters............................................................................................145
10.2.2 Select the Measurement Item.............................................................................145
10.2.3 Measurement Settings.......................................................................................... 148
10.2.4 Remove the Measurement Results................................................................... 151
10.3 Cursor Measurements....................................................................................................151
10.3.1 Manual Mode........................................................................................................... 153
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10.3.2 Track Mode................................................................................................................155
10.3.3 XY Mode.....................................................................................................................158
11 Digital Voltmeter (DVM) and Frequency Counter....................................................... 161
11.1 Digital Voltmeter (DVM)................................................................................................161
11.1.1 Measurement Settings.......................................................................................... 162
11.1.2 Remove the Measurement...................................................................................163
11.2 Frequency Counter..........................................................................................................163
11.2.1 Measurement Settings.......................................................................................... 164
11.2.2 Reset Statistics..........................................................................................................165
11.2.3 Remove the Measurement...................................................................................165
12 Reference Waveform..............................................................................................................166
12.1 To Enable Ref Function.................................................................................................. 166
12.2 To Set the Reference Waveform.................................................................................166
12.3 To Set the Ref Waveform Display...............................................................................167
12.4 Export and Import Operation..................................................................................... 168
13 Pass/Fail Test.............................................................................................................................170
13.1 To Enable or Disable the Pass/Fail Test Function..................................................170
13.2 To Select the Source.......................................................................................................171
13.3 To Create a Mask............................................................................................................. 171
13.4 To Set the Output Form of the Test Results........................................................... 171
13.5 To Start or Stop the Pass/Fail Test Operation........................................................ 172
13.6 To Display the Statistics of the Test Results............................................................173
14 Protocol Decoding..................................................................................................................175
14.1 Parallel Decoding.............................................................................................................175
14.1.1 Clock Setting (CLK)................................................................................................. 176
14.1.2 Bus Setting.................................................................................................................177
14.1.3 Display-related Settings........................................................................................178
14.1.4 Event Table.................................................................................................................178
14.2 RS232 Decoding.............................................................................................................. 179
14.2.1 Source Setting..........................................................................................................180
14.2.2 To Set Data Package...............................................................................................181
14.2.3 Display-related Settings........................................................................................182
14.2.4 Event Table.................................................................................................................182
14.3 I2C Decoding.................................................................................................................... 183
14.3.1 Source Setting..........................................................................................................184
14.3.2 Display-related Settings........................................................................................185
14.3.3 Event Table.................................................................................................................185
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14.4 SPI Decoding.....................................................................................................................187
14.4.1 To Set the Source.................................................................................................... 188
14.4.2 To Set Mode and Data...........................................................................................188
14.4.3 Display-related Settings........................................................................................190
14.4.4 Event Table.................................................................................................................190
14.5 CAN Decoding..................................................................................................................191
14.5.1 Signal Configuration.............................................................................................. 192
14.5.2 Display-related Settings........................................................................................193
14.5.3 Event Table.................................................................................................................193
14.6 LIN Decoding....................................................................................................................194
14.6.1 Signal Configuration.............................................................................................. 195
14.6.2 Display-related Settings........................................................................................196
14.6.3 Event Table.................................................................................................................196
15 Multi-pane Windowing.........................................................................................................198
16 Waveform Recording and Playing.....................................................................................200
16.1 Common Settings............................................................................................................200
16.2 Record Options................................................................................................................ 201
16.3 Play Options......................................................................................................................202
17 Search and Navigation..........................................................................................................205
17.1 Search..................................................................................................................................205
17.2 Navigation..........................................................................................................................207
18 Display Control........................................................................................................................ 211
18.1 Display Type...................................................................................................................... 211
18.2 Persistence Time.............................................................................................................. 211
18.3 Waveform Intensity.........................................................................................................212
18.4 To Set the Screen Grid................................................................................................... 212
18.5 Display Settings................................................................................................................212
18.6 Show Scale.........................................................................................................................213
18.7 Color Grade....................................................................................................................... 213
18.8 Waveform Freeze.............................................................................................................213
19 Store and Load.........................................................................................................................214
19.1 To Enter the Storage Menu.......................................................................................... 214
19.2 To Save a File.....................................................................................................................214
19.2.1 Save Image................................................................................................................214
19.2.2 Save Wave..................................................................................................................216
19.2.3 Save Setup.................................................................................................................218
19.2.4 Binary Data Format (.bin)..................................................................................... 219
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19.3 Load a File..........................................................................................................................222
19.4 Firmware Upgrade...........................................................................................................223
19.5 Disk Management...........................................................................................................224
20 System Utility Function Setting..........................................................................................227
20.1 I/O Setting..........................................................................................................................227
20.2 Basic Settings....................................................................................................................229
20.3 About this Oscilloscope................................................................................................ 231
20.4 Other Settings...................................................................................................................232
20.5 Auto Config....................................................................................................................... 232
20.6 SelfCal..................................................................................................................................233
20.7 Option List..........................................................................................................................234
20.8 Quick Action Settings.....................................................................................................234
20.9 Self-check...........................................................................................................................236
21 Remote Control........................................................................................................................238
21.1 Remote Control via USB................................................................................................239
21.2 Remote Control via LAN............................................................................................... 239
21.3 Remote Control via GPIB.............................................................................................. 240
22 Troubleshooting...................................................................................................................... 242
23 Appendix....................................................................................................................................244
23.1 Appendix A: Options and Accessories..................................................................... 244
23.2 Appendix B: Warranty.................................................................................................... 244
23.3 Appendix C: Factory Settings...................................................................................... 245
DHO1000 User Guide
VI
Copyright ©RIGOL TECHNOLOGIES CO., LTD. All rights reserved.
List of Figures
Figure 4.1 Front View ..............................................................................................................
11
Figure 4.2 Side View ................................................................................................................12
Figure 4.3 Flipping in/out Tabs ........................................................................................... 12
Figure 4.4 Connecting to Power ......................................................................................... 13
Figure 4.5 Replacing the Fuse ............................................................................................. 14
Figure 4.6 Connecting the Passive Probe ........................................................................15
Figure 4.7 Using the Compensation Signal .................................................................... 16
Figure 4.8 Square Waveform Signal ..................................................................................16
Figure 4.9 Probe Compensation .........................................................................................17
Figure 4.10 Front Panel ..........................................................................................................18
Figure 4.11 Rear Panel ............................................................................................................24
Figure 4.12 User Interface .....................................................................................................26
Figure 4.13 Tap Gesture .........................................................................................................29
Figure 4.14 Pinch&Stretch Gesture ....................................................................................29
Figure 4.15 Drag Gesture ......................................................................................................30
Figure 4.16 English Input Interface ....................................................................................31
Figure 4.17 Chinese Input Interface .................................................................................. 32
Figure 4.18 String Keypad .....................................................................................................34
Figure 4.19 Numeric Keypad ................................................................................................35
Figure 4.20 To Use the Security Lock ................................................................................36
Figure 5.1 Vertical Menu ....................................................................................................... 39
Figure 5.2 Waveform Invert On/Off .................................................................................. 45
Figure 5.3 Probe Setting Menu ...........................................................................................46
Figure 5.4 Zero Offset ............................................................................................................ 49
Figure 6.1 Horizontal Menu ................................................................................................. 50
Figure 6.2 Zoom Mode ..........................................................................................................53
Figure 7.1 Horizontal Menu ................................................................................................. 55
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DHO1000 User Guide
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Figure 7.2 Display Modes ......................................................................................................57
Figure 7.3 Memory Depth .................................................................................................... 60
Figure 7.4 XY Menu .................................................................................................................63
Figure 7.5 Measurement Schematic Diagram of Phase Deviation ......................... 64
Figure 8.1 Schematic Diagram of the Acquisition Memory ......................................67
Figure 8.2 Trigger Holdoff .....................................................................................................69
Figure 8.3 Edge Trigger Setting Menu ..............................................................................70
Figure 8.4 Positive/Negative Pulse Width .......................................................................72
Figure 8.5 Pulse Width Trigger Setting Menu ................................................................72
Figure 8.6 Positive Slope Time/Negative Slope Time ................................................. 75
Figure 8.7 Slope Trigger Setting Menu ............................................................................ 75
Figure 8.8 Video Trigger Setting Menu ............................................................................78
Figure 8.9 Pattern Trigger ..................................................................................................... 80
Figure 8.10 Pattern Trigger Setting Menu .......................................................................81
Figure 8.11 Duration Trigger ................................................................................................83
Figure 8.12 Duration Trigger Setting Menu ....................................................................83
Figure 8.13 Timeout Trigger .................................................................................................85
Figure 8.14 Timeout Trigger Menu ....................................................................................86
Figure 8.15 Runt Trigger ........................................................................................................87
Figure 8.16 Runt Trigger Setting Menu ............................................................................88
Figure 8.17 Window Trigger Setting Menu .....................................................................90
Figure 8.18 Delay Trigger ......................................................................................................92
Figure 8.19 Delay Trigger Setting Menu ..........................................................................92
Figure 8.20 Setup/Hold Trigger .......................................................................................... 95
Figure 8.21 Setup/Hold Trigger Setting Menu ..............................................................95
Figure 8.22 Nth Edge Trigger ...............................................................................................97
Figure 8.23 Nth Edge Trigger Setting Menu .................................................................. 98
Figure 8.24 Schematic Diagram of RS232 Protocol .....................................................99
Figure 8.25 RS232 Trigger Setting Menu ......................................................................100
DHO1000 User Guide
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Copyright ©RIGOL TECHNOLOGIES CO., LTD. All rights reserved.
Figure 8.26 Sequence Diagram of I2C Protocol ..........................................................102
Figure 8.27 I2C Trigger Setting Menu ............................................................................103
Figure 8.28 Binary Format Setting ...................................................................................104
Figure 8.29 Hexadecimal Format Setting ......................................................................105
Figure 8.30 Sequential Chart of SPI Bus ........................................................................106
Figure 8.31 SPI Trigger Setting Menu ............................................................................ 106
Figure 8.32 Data Frame Format of the CAN Bus ........................................................ 109
Figure 8.33 CAN Trigger Setting Menu ..........................................................................109
Figure 8.34 Sample Position ..............................................................................................110
Figure 8.35 Data Frame Format of the LIN Bus .......................................................... 112
Figure 8.36 LIN Trigger Setting Menu ............................................................................112
Figure 8.37 Sample Position ..............................................................................................113
Figure 9.1 Math Menu .........................................................................................................116
Figure 9.2 Waveform Display Window of the Operation Results .........................117
Figure 9.3 Arithmetic Operation Menu ..........................................................................118
Figure 9.4 Operation Result Display Window ..............................................................118
Figure 9.5 Function Operation Menu .............................................................................121
Figure 9.6 Operation Result Display Window ..............................................................122
Figure 9.7 FFT Operation Menu ....................................................................................... 124
Figure 9.8 FFT Operation Window .................................................................................. 125
Figure 9.9 Peak Search .........................................................................................................128
Figure 9.10 Logic Operation Menu .................................................................................129
Figure 9.11 Operation Result Display Window ........................................................... 130
Figure 9.12 Digital Filter Menu .........................................................................................133
Figure 9.13 Operation Result Display Window ........................................................... 133
Figure 10.1 Time Parameters .............................................................................................139
Figure 10.2 Delay and Phase Parameters ......................................................................142
Figure 10.3 Voltage Parameters ....................................................................................... 143
Figure 10.4 Vertical Measurement Items ...................................................................... 146
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DHO1000 User Guide
IX
Figure 10.5 Horizontal Measurement Items ................................................................ 147
Figure 10.6 Other Measurement Items ..........................................................................147
Figure 10.7 Measurement Settings Menu .................................................................... 148
Figure 10.8 Cursors ...............................................................................................................151
Figure 10.9 Manual Mode Setting Menu ......................................................................153
Figure 10.10 Manual Cursor Measurement Example ................................................155
Figure 10.11 Track Mode Setting Menu ........................................................................156
Figure 10.12 Track Measurement (before Horizontal Expansion) ........................ 157
Figure 10.13 Track Measurement (after Horizontal Expansion) ............................158
Figure 10.14 XY Mode Setting Menu ............................................................................. 159
Figure 11.1 DVM Setting Menu ........................................................................................162
Figure 11.2 Frequency Counter Setting Menu ............................................................164
Figure 12.1 Reference Waveform Menu ........................................................................166
Figure 13.1 Pass/Fail Test Menu ....................................................................................... 170
Figure 13.2 Pass/Fail Test Interface ................................................................................. 173
Figure 14.1 Schematic Diagram of Parallel Decoding .............................................. 175
Figure 14.2 Parallel Decoding Menu .............................................................................. 176
Figure 14.3 Parallel Decoding Event Table ....................................................................178
Figure 14.4 Schematic Diagram of RS232 Serial Bus ................................................ 179
Figure 14.5 RS232 Decoding Menu ................................................................................ 180
Figure 14.6 RS232 Decoding Event Table ..................................................................... 183
Figure 14.7 I2C Serial Bus ...................................................................................................184
Figure 14.8 I2C Decoding Menu ...................................................................................... 184
Figure 14.9 I2C Decoding Event Table ........................................................................... 186
Figure 14.10 SPI Serial Bus .................................................................................................187
Figure 14.11 SPI Decoding Menu ....................................................................................187
Figure 14.12 SPI Decoding Event Table ......................................................................... 190
Figure 14.13 CAN Decoding Menu ................................................................................. 191
Figure 14.14 Sample Position ............................................................................................192
DHO1000 User Guide
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Figure 14.15 CAN Decoding Event Table ...................................................................... 193
Figure 14.16 LIN Decoding Menu ....................................................................................195
Figure 14.17 LIN Decoding Event Table .........................................................................196
Figure 15.1 "Add Window" Menu ....................................................................................198
Figure 16.1 "Record" Menu ................................................................................................200
Figure 16.2 Minimized "Play" Menu ............................................................................... 203
Figure 17.1 Search Menu ....................................................................................................205
Figure 17.2 MarkTable Display ..........................................................................................207
Figure 17.3 Navigation Menu ........................................................................................... 208
Figure 17.4 Simplified Navigation Menu ...................................................................... 208
Figure 17.5 "Search Event" Navigation Setting Menu ..............................................209
Figure 17.6 "Frame Segment" Navigation Setting Menu ........................................209
Figure 18.1 Display Setting Menu ................................................................................... 211
Figure 19.1 Image Saving Setting Menu .......................................................................215
Figure 19.2 Waveform Saving Setting Menu ...............................................................217
Figure 19.3 Setup Saving Setting Menu ........................................................................218
Figure 19.4 Load Setting Menu ........................................................................................223
Figure 19.5 Upgrade Menu ................................................................................................224
Figure 19.6 Disk Management Interface .......................................................................225
Figure 20.1 Self-calibration Menu ................................................................................... 233
Figure 20.2 Quick Menu ......................................................................................................234
Figure 20.3 Key Test Interface ...........................................................................................236
Figure 20.4 Touch Screen Test Interface ........................................................................237
Figure 21.1 Search for the Available Device .................................................................241
Figure 21.2 Confirm the Available Device .....................................................................241
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DHO1000 User Guide
XI
List of Tables
Table 5.1 Probe Ratio ..............................................................................................................
46
Table 8.1 Video Standard ...................................................................................................... 79
Table 9.1 Window Function ................................................................................................126
Table 9.2 Logic Operation .................................................................................................. 130
Table 14.1 Bus Setting ..........................................................................................................177
Table 19.1 BIN File Format ................................................................................................. 219
Table 19.2 File Header ..........................................................................................................220
Table 19.3 Waveform Header ............................................................................................220
Table 19.4 Waveform Data Header ................................................................................. 222
Table 23.2 Factory Settings ................................................................................................ 245
DHO1000 User Guide
XII
Copyright ©RIGOL TECHNOLOGIES CO., LTD. All rights reserved.
1
Safety Requirement
1.1 General Safety Summary
Please review the following safety precautions carefully before putting the instrument
into operation so as to avoid any personal injury or damage to the instrument and
any product connected to it. To prevent potential hazards, please follow the
instructions specified in this manual to use the instrument properly.
• Use Proper Power Cord.
Only the exclusive power cord designed for the instrument and authorized for
use within the destination country could be used.
• Ground the Instrument.
The instrument is grounded through the Protective Earth lead of the power cord.
To avoid electric shock, it is essential to connect the earth terminal of the power
cord to the Protective Earth terminal before connecting any inputs or outputs.
• Connect the Probe Correctly.
If a probe is used, the probe ground lead must be connected to earth ground.
Do not connect the ground lead to high voltage. Improper way of connection
could result in dangerous voltages being present on the connectors, controls or
other surfaces of the oscilloscope and probes, which will cause potential hazards
for operators.
• Observe All Terminal Ratings.
To avoid fire or shock hazard, observe all ratings and markers on the instrument
and check your manual for more information about ratings before connecting
the instrument.
• Use Proper Overvoltage Protection.
Ensure that no overvoltage (such as that caused by a bolt of lightning) can reach
the product. Otherwise, the operator might be exposed to the danger of an
electric shock.
• Do Not Operate Without Covers.
Do not operate the instrument with covers or panels removed.
• Do Not Insert Objects Into the Air Outlet.
Do not insert objects into the air outlet, as doing so may cause damage to the
instrument.
• Use the Proper Fuse.
Please use the specified fuses.
Safety Requirement
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DHO1000 User Guide
1
• Avoid circuit or wire exposure.
Do not touch exposed junctions and components when the instrument is
powered on.
• Do Not Operate With Suspected Failures.
If you suspect damage occurs to the instrument, have it inspected by RIGOL
authorized personnel before further operations. Any maintenance, adjustment or
replacement especially to circuits or accessories must be performed by RIGOL
authorized personnel.
• Keep Well Ventilation.
Inadequate ventilation may cause an increase of temperature in the instrument,
which would cause damage to the instrument. So please keep the instrument
well ventilated and inspect the air outlet and the fan regularly.
• Do Not Operate in Wet Conditions.
To avoid short circuit inside the instrument or electric shock, never operate the
instrument in a humid environment.
• Do Not Operate in an Explosive Atmosphere.
To avoid personal injuries or damage to the instrument, never operate the
instrument in an explosive atmosphere.
• Keep Instrument Surfaces Clean and Dry.
To avoid dust or moisture from affecting the performance of the instrument,
keep the surfaces of the instrument clean and dry.
• Prevent Electrostatic Impact.
Operate the instrument in an electrostatic discharge protective environment to
avoid damage induced by static discharges. Always ground both the internal and
external conductors of cables to release static before making connections.
• Use the Battery Properly.
Do not expose the battery (if available) to high temperature or fire. Keep it out of
the reach of children. Improper change of a battery (lithium battery) may cause
an explosion. Use the RIGOL specified battery only.
• Handle with Caution.
Please handle with care during transportation to avoid damage to keys, knobs,
interfaces, and other parts on the panels.
WARNING
Equipment meeting Class A requirements may not offer adequate protection to broadcast
services within residential environment.
Safety Requirement
DHO1000 User Guide
2
Copyright ©RIGOL TECHNOLOGIES CO., LTD. All rights reserved.
1.2 Safety Notices and Symbols
Safety Notices in this Manual:
WARNING
Indicates a potentially hazardous situation or practice which, if not avoided, will result in
serious injury or death.
CAUTION
Indicates a potentially hazardous situation or practice which, if not avoided, could result
in damage to the product or loss of important data.
Safety Notices on the Product:
• DANGER
It calls attention to an operation, if not correctly performed, could result in injury
or hazard immediately.
• WARNING
It calls attention to an operation, if not correctly performed, could result in
potential injury or hazard.
• CAUTION
It calls attention to an operation, if not correctly performed, could result in
damage to the product or other devices connected to the product.
Safety Symbols on the Product:
Hazardous
Voltage
Safety Warning Protective Earth
Terminal
Chassis Ground Test Ground
1.3 Measurement Category
Measurement Category
This instrument can make measurements in Measurement Category I.
WARNING
This instrument can only be used for measurements within its specified measurement
categories.
Safety Requirement
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DHO1000 User Guide
3
Measurement Category Definitions
• Measurement category I is for measurements performed on circuits not directly
connected to MAINS. Examples are measurements on circuits not derived from
MAINS, and specially protected (internal) MAINS derived circuits. In the latter
case, transient stresses are variable. Thus, you must know the transient withstand
capability of the equipment.
• Measurement category II is for measurements performed on circuits directly
connected to low voltage installation. Examples are measurements on household
appliances, portable tools and similar equipment.
• Measurement category III is for measurements performed in the building
installation. Examples are measurements on distribution boards, circuit-breakers,
wiring (including cables, bus-bars, junction boxes, switches and socket-outlets) in
the fixed installation, and equipment for industrial use and some other
equipment. For example, stationary motors with permanent connection to a
fixed installation.
• Measurement category IV is for measurements performed at the source of a
low-voltage installation. Examples are electricity meters and measurements on
primary overcurrent protection devices and ripple control units.
1.4 Ventilation Requirement
This instrument uses a fan to force cooling. Please make sure that the air inlet and
outlet areas are free from obstructions and have free air. When using the instrument
in a bench-top or rack setting, provide at least 10 cm clearance beside, above and
behind the instrument for adequate ventilation.
CAUTION
Inadequate ventilation may cause an increase of temperature in the instrument, which
would cause damage to the instrument. So please keep the instrument well ventilated and
inspect the air outlet and the fan regularly.
1.5 Working Environment
Temperature
Operating: 0℃ to +50℃
Non-operating: -30℃ to +60℃
Humidity
• Operating:
Below +30℃: ≤90% RH (without condensation)
+30℃ to +40℃: ≤75% RH (without condensation)
Safety Requirement
DHO1000 User Guide
4
Copyright ©RIGOL TECHNOLOGIES CO., LTD. All rights reserved.
+40℃ to +50℃: ≤45% RH (without condensation)
• Non-operating:
Below +60℃: ≤90% RH (without condensation)
WARNING
To avoid short circuit inside the instrument or electric shock, never operate the
instrument in a humid environment.
Altitude
• Operating: below 3 km
• Non-operating: below 15 km
Protection Level Against Electric Shock
ESD ±8kV
Installation (Overvoltage) Category
This product is powered by mains conforming to installation (overvoltage) category II.
WARNING
Ensure that no overvoltage (such as that caused by a bolt of lightning) can reach the
product. Otherwise, the operator might be exposed to the danger of an electric shock.
Installation (Overvoltage) Category Definitions
Installation (overvoltage) category I refers to signal level which is applicable to
equipment measurement terminals connected to the source circuit. Among these
terminals, precautions are done to limit the transient voltage to a low level.
Installation (overvoltage) category II refers to the local power distribution level which
is applicable to equipment connected to the AC line (AC power).
Pollution Degree
Pollution Degree 2
Pollution Degree Definition
• Pollution Degree 1: No pollution or only dry, nonconductive pollution occurs.
The pollution has no effect. For example, a clean room or air-conditioned office
environment.
• Pollution Degree 2: Normally only nonconductive pollution occurs. Temporary
conductivity caused by condensation is to be expected. For example, indoor
environment.
Safety Requirement
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DHO1000 User Guide
5
• Pollution Degree 3: Conductive pollution or dry nonconductive pollution that
becomes conductive due to condensation occurs. For example, sheltered
outdoor environment.
• Pollution Degree 4: The pollution generates persistent conductivity caused by
conductive dust, rain, or snow. For example, outdoor areas.
Safety Class
Class 1 – Grounded Product
1.6 Care and Cleaning
Care
Do not store or leave the instrument where it may be exposed to direct sunlight for
long periods of time.
Cleaning
Clean the instrument regularly according to its operating conditions.
1. Disconnect the instrument from all power sources.
2. Clean the external surfaces of the instrument with a soft cloth dampened with mild
detergent or water. Avoid having any water or other objects into the chassis via the
heat dissipation hole. When cleaning the LCD, take care to avoid scarifying it.
CAUTION
To avoid damage to the instrument, do not expose it to caustic liquids.
WARNING
To avoid short-circuit resulting from moisture or personal injuries, ensure that the
instrument is completely dry before connecting it to the power supply.
1.7 Environmental Considerations
The following symbol indicates that this product complies with the WEEE Directive
2002/96/EC.
The equipment may contain substances that could be harmful to the environment or
human health. To avoid the release of such substances into the environment and
avoid harm to human health, we recommend you to recycle this product
Safety Requirement
DHO1000 User Guide
6
Copyright ©RIGOL TECHNOLOGIES CO., LTD. All rights reserved.
appropriately to ensure that most materials are reused or recycled properly. Please
contact your local authorities for disposal or recycling information.
You can click on the following link
https://int.rigol.com/services/services/declaration
to download the latest version of the RoHS&WEEE certification file.
Safety Requirement
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DHO1000 User Guide
7
2
Product Features
Product Features
• Brand-new chipset "Centaurus" developed by RIGOL
• Ultra-low noise floor for cleaner signals, measuring small signals accurately
• 12-bit vertical resolution
[1]
• Up to 200 MHz analog bandwidth, 2/4 analog channels, and 1 EXT channel
• Up to 2 GSa/s real-time sample rate
• Max. memory depth: 100 Mpts (optional)
• Vertical sensitivity range: 500 μV/div to 10 V/div
• Up to 1,500,000 wfms/s waveform capture rate with the UltraAcquire mode
• 10.1'' 1280*800 HD touch display
• User-friendly Flex Knobs, bringing smoother interaction
• Standard photoelectric encoder operating knobs, effectively prolonging its
service life
• Standard USB Device & Host, LAN, and HDMI interfaces
DHO1000 series digital oscilloscope is designed to meet the designing, debugging,
and testing requirements of the mainstream oscilloscope market. Adopting the
brand-new chipset "Centaurus" developed by RIGOL, this series achieves a fast
waveform capture rate of 1,500,000 wfms/s with the UltraAcquire mode, 100 Mpts
memory depth, 12-bit vertical resolution, all combined with excellent noise floor
performance and vertical accuracy to meet your requirements for more accurate
measurements, bringing extraordinary T&M experience for you.
NOTE
[1]: 16 bits in High Resolution mode.
Product Features
DHO1000 User Guide
8
Copyright ©RIGOL TECHNOLOGIES CO., LTD. All rights reserved.
3
Document Overview
This manual gives you a quick overview of the front and rear panel, user interface as
well as basic operation methods of DHO1000 series.
TIP
For the newest version of this manual, download it from RIGOL official website (
http://
www.rigol.com
).
Publication Number
UGA32101-1110
Software Version
Software upgrade might change or add product features. Please acquire the latest
version of the manual from RIGOL website or contact RIGOL to upgrade the software.
Format Conventions in this Manual
1. Key
The front panel key is denoted by the menu key icon. For example,
indicates the "DEFAULT" key.
2. Menu
The menu item is denoted by the format of "Menu Name (Bold) + Character
Shading" in the manual. For example,
Setup indicates the "Setup" sub-menu under
the "Utility" function menu. You can click or tap Setup to access the "Setup" menu.
3. Operation Procedures
The next step of the operation is denoted by ">" in the manual. For example,
> Storage indicates first clicking or tapping and then clicking or tapping
Storage.
4. The front/rear panel connector is denoted by "Brackets + Connector Name (Bold)",
for example, [AUX OUT].
5. Knob
Label Knob Label Knob
Horizontal
POSITION
Horizontal Position
Knob
1
Multipurpose
Knob 1
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DHO1000 User Guide
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Label Knob Label Knob
Horizontal
SCALE
Horizontal Scale
Knob
2
Multipurpose
Knob 2
Vertical POSITION
Vertical Position
Knob
LEVEL
Trigger Level Knob
Vertical
SCALE
Vertical Scale
Knob
- -
Content Conventions in this Manual
DHO1000 series digital oscilloscope includes the following models. Unless otherwise
specified, this manual takes the 4-channel model DHO1104 as an example to illustrate
the basic operation methods of DHO1000 series.
Model Max. Analog Bandwidth Analog Channels
DHO1072 70 MHz 2
DHO1074 70 MHz 4
DHO1102 100 MHz 2
DHO1104 100 MHz 4
DHO1202 200 MHz 2
DHO1204 200 MHz 4
Document Overview
DHO1000 User Guide
10
Copyright ©RIGOL TECHNOLOGIES CO., LTD. All rights reserved.
4
Quick Start
4.1 General Inspection
1. Inspect the packaging
If the packaging has been damaged, do not dispose the damaged packaging or
cushioning materials until the shipment has been checked for completeness and
has passed both electrical and mechanical tests.
The consigner or carrier shall be liable for the damage to the instrument resulting
from shipment. RIGOL would not be responsible for free maintenance/rework or
replacement of the instrument.
2. Inspect the instrument
In case of any mechanical damage, missing parts, or failure in passing the electrical
and mechanical tests, contact your RIGOL sales representative.
3. Check the accessories
Please check the accessories according to the packing lists. If the accessories are
damaged or incomplete, please contact your RIGOL sales representative.
Recommended Calibration Interval
RIGOL suggests that the instrument should be calibrated every 18 months.
4.2 Appearance and Dimensions
Figure 4.1 Front View
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DHO1000 User Guide
11
Figure 4.2 Side View
4.3 To Prepare for Use
4.3.1 Tilting the Oscilloscope for Easier Viewing
Flip out the tabs under the oscilloscope's rear feet to tilt the oscilloscope to stabilize it
for easier operation and viewing. Flip in the tabs for storage or transporting when not
using the instrument. Please see the figure below.
Figure 4.3 Flipping in/out Tabs
Quick Start
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4.3.2 Connecting to Power
The power requirements of the oscilloscope are 100-240 V, 50-60 Hz. Please use the
power cord provided in the accessories to connect the oscilloscope to the AC power
source, as shown in the figure below.
Figure 4.4 Connecting to Power
WARNING
To avoid electric shock, ensure that the instrument is correctly grounded.
4.3.3 Turn-on Checkout
After the instrument is connected to the power source, press the power switch at
the lower-left corner of the front panel to power on the instrument. During the start-
up process, the instrument performs a series of self-tests. After the self-test, the
splash screen is displayed.
• Restart: Click or tap > Restart. Then a prompt message "Are you sure to
reboot?" is displayed. Click or tap OK to restart the instrument.
• Shutdown:
- Click or tap > Shutdown. Then a prompt message "Are you sure to
shutdown?" is displayed. Click or tap OK to shut down the instrument.
- Press the power switch and a prompt message "Are you sure to
shutdown?" is displayed. Click or tap OK to shut down the instrument.
- Press
twice to directly shut down the instrument.
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DHO1000 User Guide
13
- Press for three seconds to directly shut down the instrument.
TIP
You can also click or tap > Utility > Setup and select "Switch On" in "Power Status" item.
In this way, the instrument powers on once connected to power.
4.3.4 Replacing the Fuse
If you need to replace the fuse, please use the correct fuse (AC 250 V, T3.15 A; 5.2
mm×20 mm) and follow the steps shown below (see
Figure 4.5
).
1. Power off the instrument and remove the power cord.
2. Insert a small straight screwdriver into the slot at the power socket and pry out the
fuse holder gently.
3. Remove the fuse.
4. Insert the proper fuse into the fuse holder.
5. Re-insert the fuse holder into the power socket.
Figure 4.5 Replacing the Fuse
WARNING
To avoid electric shock, please make sure that the instrument is powered off and
disconnected from the power before replacing the fuse. Also, please make sure the fuse is
consistent with the required fuse rating.
Quick Start
DHO1000 User Guide
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Copyright ©RIGOL TECHNOLOGIES CO., LTD. All rights reserved.
4.3.5 Setting the System Language
This oscilloscope supports multiple languages. You can click or tap > Utility >
Setup > Language to select the system language.
4.3.6 Connecting Probes
RIGOL provides passive probes for DHO1000 series. For specific probe models, please
refer to
DHO1000 series Data Sheet
. For detailed technical information of the probes,
please refer to the corresponding Probe User Guide.
Connect the Passive Probe
1. Connect the BNC terminal of the probe to an analog channel input terminal of the
oscilloscope on the front panel as shown in the figure below.
2. Connect the ground alligator clip or spring of the probe to the circuit ground
terminal, and then connect the probe tip to the circuit point to be tested.
Figure 4.6 Connecting the Passive Probe
After you connect the passive probe, check the probe function and probe
compensation adjustment before making measurements. For details, please refer to
Function Inspection
and
Probe Compensation
.
4.3.7 Function Inspection
1. Press the front-panel and a prompt message "Restore default settings?"
is displayed. Click or tap OK to restore the instrument to its factory default
settings.
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DHO1000 User Guide
15
2. Connect the ground alligator clip of the probe to the "Ground Terminal" as shown
in
Figure 4.7
.
3. Use the probe to connect the input terminal of CH1 and the "Compensation Signal
Output Terminal" of the probe, as shown in
Figure 4.7
.
Figure 4.7 Using the Compensation Signal
4. Set the probe ratio based on the attenuation of the probe, and then click or tap
> Auto.
5. Observe the waveform on the display. In normal condition, you should see a
square waveform similar to the waveform shown in the figure below.
Figure 4.8 Square Waveform Signal
6. Test the other channels in the same way. If you see the waveform, but the square
wave is not shaped correctly as shown above, perform the procedure described in
Probe Compensation
. If you do not see the waveform, perform these steps again.
WARNING
To avoid electric shock when using the probe, please make sure that the insulated wire of
the probe is in good condition. Do not touch the metallic part of the probe when the
probe is connected to high voltage source.
Quick Start
DHO1000 User Guide
16
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4.3.8 Probe Compensation
When used for the first time, the oscilloscope probe must be compensated to match
the input characteristics of the oscilloscope channel to which it is connected. A non-
compensated or poorly compensated probes can introduce measurement inaccuracy
or errors. The compensation procedure is as follows:
1. Perform step 1, 2, 3, and 4 in
Function Inspection
.
2. Check the displayed waveforms and compare them with waveforms shown in the
figure below.
Figure 4.9 Probe Compensation
3. Use the probe compensation adjustment tool provided in the accessories to adjust
the low-frequency compensation adjustment hole on the probe until the displayed
waveform is consistent with the "Perfectly compensated" waveform shown in the
figure above.
4.4 Product Overview
The following content provides a description of the front and rear panels as well as
the user interface of the DHO1000 series by taking 4-channel model DHO1104 as an
example.
Quick Start
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DHO1000 User Guide
17
4.4.1 Front Panel Overview
1
2
7
4
8
9
10
11
12
13
14
15
6
3
5
Figure 4.10 Front Panel
1. 10.1-inch Capacitive Touch Screen
Displays the waveforms, menu labels, and parameter settings, system state,
prompt messages, and other information.
2. Multipurpose Knobs
- Non-menu operation:
When not operating on the menu, you can rotate the knob 1 to adjust the
waveform brightness. When a cursor, decoding, Math waveform, or reference
Quick Start
DHO1000 User Guide
18
Copyright ©RIGOL TECHNOLOGIES CO., LTD. All rights reserved.
waveform is added on the screen, you can rotate the multipurpose knob to
move the cursor (knob 1 and 2), adjust the decode threshold (knob 1) and
decode result display position (knob 2), adjust the vertical scale (knob 1) and
vertical offset (knob 2) of the math/reference waveform. You can click or tap
Flex Knob on the Toolbar at the upper-right of the screen to set priority.
- Automatic: Cursor > (Math/Ref/Decode) > Intensity (default priority).
- Manual: all non-menu operation items are listed at the lower part of the Flex
Knob menu. You can select one of them as the current item for multipurpose
knob to adjust.
- Menu operation:
When operating on the menu, you can rotate the multipurpose knob 1/2 to
adjust the value in the menu. When you click or tap an input field and then the
/ icon is displayed in the input field, it indicates that you can use
multipurpose knob 1/2 to set the value. The LED indicator of the corresponding
knob is illuminated. In this point, you can rotate the knob to adjust the value or
press the knob to restore the parameter to the default value.
When using the virtual numeric keypad or drop-down list, you can rotate the
knob to navigate through the keypad or drop-down list and press the knob to
select an item.
3. Measure Key
Press to access the Measure menu. You can set the source and select the
waveform parameters in the menu. For details, please refer to
Measurements
.
4. Cursor Key
Press to enable cursor measurements. The results are displayed in the right-
side "Result" bar. Three cursor modes are available: Manual, Track, and XY; wherein,
the XY mode is available only when the XY function is enabled.
5. Analyse Key
Press to access the Analyse menu in which you can access analysis features
including digital voltmeter (DVM), counter, waveform recording, and pass/fail
testing.
6. Touch Lock Key
Press
once to disable the touch screen function; press it again to enable the
touch screen function.
7. Common Tools Keys
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DHO1000 User Guide
19
- is the auto scale key. Press this key to enable the auto scale function.
The oscilloscope is automatically configured to best display the input signals by
adjusting the vertical scale, horizontal timebase, and trigger mode. To set up
the key, please refer to
Auto Config
.
- is the RUN/STOP key. Press the key to set the oscilloscope's run state to
"RUN" or "STOP". In "RUN" state, this key is illuminated in green; in "STOP"
state, this key is illuminated in red.
- is the key for a single acquisition. Press this key to set the oscilloscope's
trigger mode to "Single".
- is the default setup key. Press this key and a dialog box is displayed.
Click or tap OK in the dialog to restore the oscilloscope's default settings.
- is the clear key. Press this key to clear all waveform on the display. If
the oscilloscope is in "RUN" mode, it continues to display new waveforms.
8. Quick Action Key
Press to perform the selected quick action: print screen, save wave, save
setup, measure all, statistics reset, waveform record, or save group. To set up the
key, please refer to
Quick Action Settings
.
9. Trigger Controls
- is the trigger setup key. Press this key to access the Trigger menu. For
details, please refer to
Triggering the Oscilloscope
.
Quick Start
DHO1000 User Guide
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Copyright ©RIGOL TECHNOLOGIES CO., LTD. All rights reserved.
- is the trigger slope setup key. Press this key to select the edge type
(rising edge, falling edge, or either edge). This key is not active when the trigger
type is not set to "Edge".
- is the force trigger key. Press this key to force a trigger.
- LEVEL is the trigger level/digital threshold knob. Turn the knob clockwise to
increase the trigger level or turn the knob counterclockwise to decrease the
level. Pressing the knob can quickly set the trigger level to the waveform's 50%
peak-to-peak value.
10. Vertical Controls
- Vertical POSITION is the vertical position knob. Turn this knob to change
the selected waveform's vertical position to move the waveform up or down on
the display. Press this knob to reset the vertical position to zero.
- Vertical SCALE is the vertical scale knob. Rotate this knob to modify the
value of vertical divisions of the graticule in volts/div. Press this knob to toggle
between fine and coarse adjustment of the vertical scale.
- is the reference key. Press this key to assess the Ref menu, in which you
can add reference waveforms in waveform view and compare them with
measured waveforms to identify circuit fault.
- is the Math key. Press this key to access the Math menu. Math
operations include A+B, A-B, A× B, A/B, FFT, etc. You can also set the Math
label.
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DHO1000 User Guide
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- / / / is the channel key. Depending on the actual
situation, press the key to enable (display), select, or disable the corresponding
channel, as described below:
- If the channel is not displayed, you can press the channel key to open the
channel in the waveform view window.
- If the channel is displayed but not selected, you can press the channel key to
select the channel.
- If the channel is both displayed and selected, you can press the channel key
to close its display in the waveform view.
For two-channel models (DHO1072/DHO1102/DHO1202), only two channel
keys ( and ) are available.
11. Horizontal Controls
- Horizontal POSITION is the horizontal position knob. Turn the knob to
change the horizontal position (trigger position) to move the waveforms
horizontally. Press the knob to reset the horizontal position to default.
- Horizontal SCALE is the horizontal scale knob. Turn the knob to change the
horizontal time/div setting to compress or expand waveforms of all channels
horizontally. Press this knob to toggle between fine and coarse adjustment of
the horizontal scale.
- is the acquisition setup key. Press this key to access the Horizontal menu.
You can set the oscilloscope's time base mode, acquisition mode, memory
depth, etc.
Quick Start
DHO1000 User Guide
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Copyright ©RIGOL TECHNOLOGIES CO., LTD. All rights reserved.
- is the Zoom (delayed sweep) key. Press this key to enable or disable the
Zoom mode.
- is the Navigate key. Press this key to access the Navigation menu. You
can navigate time, search events, or segments. For details, please refer to
Navigation
.
- are the navigation keys.
12. Probe Compensation Signal Output Terminal/Ground Terminal
This terminal outputs the probe compensation signal which helps you match a
probe's input capacitance to the oscilloscope channel to which it is connected. For
details, please refer to
Probe Compensation
.
13. Analog Channel Input Terminals
Attach probes to these connectors for analog signal inputs.
For two-channel models (DHO1072/DHO1102/DHO1202), only two input terminals
are available.
14. USB HOST Port
This series supports the flash memory USB storage device of FAT32 format and
USB-GPIB module.
- USB storage device: imports or exports data (software update, waveform,
setup, or captured image).
- USB-GPIB module: extends the GPIB interface for RIGOL instruments that
integrates the USB HOST interface but not the GPIB interface.
15. Power Switch
Press the switch to power on/off the oscilloscope.
Quick Start
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DHO1000 User Guide
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4.4.2 Rear Panel Overview
1
2
3
4
7
6
5
10
8
9
Figure 4.11 Rear Panel
1. AUX OUT
- Trigger output:
When the AUX output is set to "TrigOut", the oscilloscope generates a trigger
and outputs a signal that can reflect the current capture rate of the oscilloscope
via this interface. Connect the signal to a waveform display device and measure
the frequency of the signal. The measurement result is the same as the current
capture rate.
- Pass/Fail:
When the AUX output is set to "PassFail", in the pass/fail test, the instrument
will output a pulse via the [AUX OUT] connector when a passed or failed
waveform is detected during the pass/fail test.
2. EXT TRIG
BNC connector to input external trigger signal for the oscilloscope.
3. 10 MHz REF IN
BNC connector to input external reference clock signal.
4. 10 MHz REF OUT
BNC connector that can output the 10 MHz clock signal generated by the internal
crystal oscillator inside the instrument.
5. HDMI
Quick Start
DHO1000 User Guide
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Copyright ©RIGOL TECHNOLOGIES CO., LTD. All rights reserved.
You can connect the instrument to an external display that has the HDMI interface
(e.g. monitor or projector) via this interface to better observe the waveform display
clearly. At this time, you can also view the waveforms on the LCD of the
instrument.
6. USB DEVICE
Connect the instrument to the PC via this interface. Then you can use the PC
software Ultra Scope to send the SCPI commands or use the user-defined
programming to control the instrument.
7. LAN
Connect the instrument to network via this interface. The instrument conforms to
LXI CORE 2011 DEVICE instrument standard. Its test system can be built quickly.
Then you can control the instrument through using Web Control to send the SCPI
commands to control the instrument. When update is available, you can perform
online upgrading for the system software of the instrument via the LAN interface.
8. AC Power Cord Connector
The power requirements of the instrument are 100 V to 240 V, 50 Hz to 60 Hz.
Please use the power cord provided in the accessories to connect the instrument
to the AC power source.
9. Fuse
If you need to replace the fuse, use only the specified fuse.
10. Security Lock Hole
Use a standard PC/laptop lock cable to secure the oscilloscope to a work bench or
other location.
Quick Start
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DHO1000 User Guide
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4.4.3 User Interface Overview
Figure 4.12 User Interface
1. Waveform View
Displays the measurement waveform window for CH1-CH4. Click or tap at the
upper-right corner of the window to close the window; click or tap
to enter
the configuration menu of the specified function.
2. Run State Label
Displays the operating status of the instrument.
3. Horizontal Timebase Label
Displays the current horizontal time base. Click or tap this label to enter the
horizontal setting menu.
4. Sample Rate & Memory Depth Label
Displays the current sample rate and memory depth. Click or tap this label to enter
the horizontal setting menu.
5. Horizontal Delay Label
Displays the current horizontal position. Click or tap this label to enter the
horizontal setting menu.
Quick Start
DHO1000 User Guide
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Copyright ©RIGOL TECHNOLOGIES CO., LTD. All rights reserved.
6. Trigger Label
- Displays the trigger information of the system, including the trigger type,
trigger level, trigger mode, and etc.
- Click or tap the trigger label, then the trigger setting window is displayed. You
can set the parameters for the trigger.
7. Function Toolbar
Provides STOP/RUN, XY, Default, Flex Knob, Navigate keys and some function
keys in the function navigation menu.
8. Result Sidebar
Displays the measurement results and statistics of various functions. Click or tap
at the lower-right corner of the screen to open or close the "Result" sidebar.
9. Notification Area
Displays USB icon, LAN icon, the sound icon, remote control icon as well as data
and time. You can click or tap this area to open the "Utility" menu.
- USB storage device icon: When a USB storage device is detected,
will be
displayed.
- LAN icon: When the LAN interface is successfully connected,
is displayed.
- Sound icon: In the "Utility" menu, click or tap Setup > Beeper to enable or
disable the sound. When on,
will be displayed; when off, will be
displayed. You can simply click or tap the icon to enable or disable the sound.
- Remote control icon: When you use Web Control to control the instrument
remotely,
will be displayed.
- Date and time: displays the system date and time. For how to set the data and
time, please refer to
Display Date and Time
.
10. Split-screen Display
If you enable multiple functions, multiple windows can be displayed on the screen
at one time.
11. Math Labels
Displays the on/off state, operation type, and vertical scale.
12.
Channel Labels
- Display the on/off status of CH1~CH4.
- Display the channel coupling mode.
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- Display the vertical scale.
- Display the vertical offset.
NOTE
For two-channel models (DHO1072/DHO1102/DHO1202), only two channel labels are
available.
13. Function Navigation Icon
Click or tap the icon to open the function navigation menu in which you can
access the specified function menu by clicking or tapping the corresponding
function key.
4.5 Touch Screen Gestures
The instrument's large capacitive touch screen makes operation and configuration
easy and flexible. The highly sensitive user interface designed for touch has a strong
waveform display capability, bringing an extraordinary user experience. The actions
supported by the touch screen controls include tapping, pinching&stretching, as well
as dragging.
4.5.1 Tap
Use one finger to tap the symbol or characters on the screen slightly, as shown in
Figure 4.13
. With the Tap gesture, you can perform the following operations:
• Tap the menu displayed on the screen to operate on the menu.
• Tap the function navigation icon at the lower-left corner of the touch screen to
enable the function navigation.
• Tap the displayed numeric keypad to set the parameters.
• Tap the virtual keypad to set the filename.
• Tap the close button at the upper-right corner of the message box to close the
prompt window.
• Tap other windows on the touch screen and operate on the windows.
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DHO1000 User Guide
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Copyright ©RIGOL TECHNOLOGIES CO., LTD. All rights reserved.
Figure 4.13 Tap Gesture
4.5.2 Pinch&Stretch
Pinch or stretch two points on the screen with two fingers to zoom in or out the
waveform. To zoom in the waveform, first pinch the two fingers and then stretch the
fingers; to zoom out the waveform, first stretch the two fingers, and then pinch the
fingers together, as shown in the figure below. With the pinch&stretch gesture, you
can perform the following operation:
• Pinching&stretching in the horizontal direction can adjust the horizontal time
base of the waveform.
• Pinching&stretching in the vertical direction can adjust the vertical scale of the
waveform.
Figure 4.14 Pinch&Stretch Gesture
4.5.3 Drag
Use one finger to select the object, and then drag the object to a destination place, as
shown in the figure below. With the drag gesture, you can perform the following
operation:
• Drag the waveform to change its position or scale.
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DHO1000 User Guide
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• Drag the window controls to change the position of the window (e.g. numeric
keypad).
• Drag the cursor to move the cursor.
• Drag the trigger cursor to change the trigger level.
• In multi-window display, drag one of the displayed windows to change its
position on the display.
Figure 4.15 Drag Gesture
4.6 Parameter Setting Method
For this instrument, you can use the knobs and touch screen to set parameters. The
common parameter setting methods are as follows:
• Method 1: Some parameters can be adjusted by rotating the front-panel knobs.
• Method 2: Click or tap the input field of a specified parameter, then a virtual
keypad is displayed. Complete the parameter setting with the keypad.
Input Chinese and English Characters
When naming a label, this instrument supports Chinese/English input method. The
following part introduces how to input Chinese and English characters with the
Chinese/English input method.
• Input English Characters
Quick Start
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Figure 4.16 English Input Interface
1. Select English input method
First check the input method type. If it shows "En/中", then go to Step 2; if it
shows "中/En", click or tap the input method switchover key to switch to "En/
中" (English input method).
2. Clear the name input area
If there is no character in the "Name Input Area", please go to the next step. If
there are characters in the "Name Input Area", click or tap the Backspace key
to delete all the characters from the "Name Input Area" in order.
3. Input the upper-case letter
If you want to input an upper-case letter, first use the Caps key to switch
between the upper-case and lower-case mode. If the Caps key is selected,
input the upper-case letter with the virtual keypad. If not, first click or tap the
Caps key to ensure it is selected, then input the upper-case letter. All the input
letters will be displayed in the "Name Input Area".
4. Input the lower-case letter
Refer to the operation specified in the previous step. If the Caps key is not
selected, directly input the lower-case letter.
5. Input numbers or symbols
If the letter keypad is displayed, you need to click or tap the numeric
switchover key to switch to the numeric keypad, and input numbers or
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DHO1000 User Guide
31
symbols with the numeric keypad. All the input letters will be displayed in the
"Name Input Area".
6. Modify or delete the unwanted characters that have been input
During the name input process, you can modify or delete the unwanted
character if necessary. To delete the characters that have been input, click or
tap the Backspace key in the virtual keypad to delete the characters. To
modify the characters that have been input, delete the unwanted characters
first and then input the new characters.
You can directly move the cursor to the character to be modified or deleted,
delete the desired character or input the new characters after deleting the
unwanted character.
7. Confirm the input
After completing the input operation, click or tap "OK".
• Input Chinese Characters
Figure 4.17 Chinese Input Interface
1. Select Chinese input method
First check the input method type. If it shows "中/En", then go to Step 2; if it
shows "En/中", click or tap the input method switchover key to switch to
"中/En" (Chinese input method).
2. Clear the name input area
Quick Start
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32
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If there is no character in the "Name Input Area", please go to the next step. If
there are characters in the "Name Input Area", click or tap the Backspace key
to delete all the characters from the "Name Input Area" in order.
If there are characters in the "Pinyin Input Area", when you delete characters
from the name input area, the characters in the Pinyin input area will be
deleted first.
3. Input Chinese characters
Click or tap the characters in the virtual keypad to input Pinyin into the input
area, then the characters to be selected will be displayed in the Chinese
character selection area. Slide to view more Chinese characters for you to
choose. Select the desired Chinese character, and then the selected character
will be displayed in the input area.
4. Modify or delete the unwanted characters that have been input
During the name input process, you can modify or delete the unwanted
character if necessary. To delete the characters that have been input, click or
tap the Backspace key in the virtual keypad to delete the characters. To
modify the characters that have been input, delete the unwanted characters
first and then input the new characters.
5. Confirm the input
After completing the input operation, click or tap "OK".
Input a String
When naming a file or folder, you need to input a string with the keypad.
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DHO1000 User Guide
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Figure 4.18 String Keypad
1. Clear the name input area
If there is no character in the "Name Input Area", please go to the next step. If
there are characters in the "Name Input Area", click or tap the Backspace key to
delete all the characters from the "Name Input Area" in order.
2. Input the upper-case letter
If you want to input an upper-case letter, first use the Caps key to switch between
the upper-case and lower-case mode. If the Caps key is selected, input the upper-
case letter with the virtual keypad. If not, first click or tap the Caps key to ensure it
is selected, then input the upper-case letter. All the input letters will be displayed
in the "Name Input Area".
3. Input the lower-case letter
Refer to the operation specified in the previous step. If the Caps key is not
selected, directly input the lower-case letter.
4. Input numbers or symbols
If the letter keypad is displayed, you need to click or tap the numeric switchover
key to switch to the numeric keypad, and input numbers or symbols with the
numeric keypad. All the input letters will be displayed in the "Name Input Area".
5. Modify or delete the unwanted characters that have been input
During the name input process, you can modify or delete the unwanted character
if necessary. To delete the characters that have been entered, click or tap the
Quick Start
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34
Copyright ©RIGOL TECHNOLOGIES CO., LTD. All rights reserved.
Backspace key in the virtual keypad. To modify the characters that have been input,
delete the unwanted characters first and then input the new characters.
You can directly move the cursor to the character to be modified or deleted, delete
the desired character or input the new characters after deleting the unwanted
character.
6. Confirm the input
After completing the input operation, click or tap "OK".
Input a Value
When setting or modifying a parameter, you can input an appropriate value with the
numeric keypad.
• Input a value or unit in the keypad using the touch screen.
• You can also rotate the multipurpose knob (1 or 2) to move the cursor and select
the desired value and unit. Then press the knob to input the selected value or
unit.
Figure 4.19 Numeric Keypad
After you input all the values and select the desired units, the numeric keypad is
turned off automatically. This indicates that you have completed parameter setting.
Besides, after you have input the values, you can also press "OK" directly to close the
numeric keypad. At this time, the unit of the parameter is the default unit. In the
numeric keypad, you can perform the following operations:
• Delete the parameter value that has been input;
• Set the parameter value to a maximum or minimum value;
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DHO1000 User Guide
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• Set the parameter to a default value.
• Clear the parameter input field.
4.7 Using the Security Lock
If necessary, you can lock the instrument to a fixed location by using the security lock
(please purchase it by yourself), as shown in the figure below.
The method is as follows: align the lock with the lock hole and plug it into the lock
hole vertically, turn the key clockwise to lock the oscilloscope, and then pull the key
out.
Figure 4.20 To Use the Security Lock
NOTE
Please do not insert other objects into the security lock hole to avoid damaging the
instrument.
4.8 Accessing the Built-in Help System
The built-in help system provides instructions for all the front-panel keys and their
corresponding menu keys. Click or tap > Help to access the "Help" menu.
Quick Start
DHO1000 User Guide
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Copyright ©RIGOL TECHNOLOGIES CO., LTD. All rights reserved.
After that, you can get its help information by clicking on or tapping the link for the
desired item.
4.9 Viewing the Option Information and Install the
Option
This series oscilloscope provides multiple options to fulfill your measurement
requirements. If you need any of these options, order them according to the Order
No. available in "
Appendix A: Options and Accessories
", and then install the options
according to this section. Besides, you can also view the option installation status or
activate the newly purchased option.
View the installed option
The instrument is installed with the trial versions of the options before leaving factory.
The trial time starts from the time when you power on the instrument for the first
time, and the trial time is about 2,160 minutes. Perform the following operations to
view the name of the installed option and option installation status.
• Click or tap the function navigation icon at the lower-left corner of the
screen, and then select Utility to enter the utility function menu.
• Click or tap Options to view the option list.
Install the option
The option license is a string of fixed characters. The license file should be in specific
format, with the filename extension ".lic". After you purchase an option, you will
obtain a key (used for obtaining desired the option license code). Then, you can
install the option according to the following steps.
1. Obtain an option license
a. Log in to the RIGOL official website (
http://www.rigol.com
), click SERVICE
CENTRE > License Activation to enter the "Registered product license code"
interface.
b. In the software license registration interface, input the correct key, serial
number (click or tap > Utility > About to obtain the serial number of the
instrument), and verification code. Then click Generate to obtain the option
license.
2. Install the option
Sending the SCPI commands (:SYSTem:OPTion:INSTall <license>) to install options
is supported. For details, refer to
DHO1000 Programming Guide
.
Quick Start
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DHO1000 User Guide
37
TIP
• During the installation process, you are not allowed to power off the instrument.
• Sending the SCPI commands (:SYSTem:OPTion:INSTall <license>) to install options is
supported. Installing options by using the USB storage device or inputting the license
code manually is not supported.
Quick Start
DHO1000 User Guide
38
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5
Vertical System
This series oscilloscope provides 2 analog input channels (CH1-CH2) for DHO1072/
DHO1102/DHO1202 and 4 analog input channels (CH1-CH4) for DHO1074/
DHO1104/DHO1204, and each channel is equipped with an independent vertical
control system. The setting methods for their vertical systems are the same. This
chapter takes CH1 of a four-channel model as an example to introduce the setting
method for the vertical system.
When a channel is selected, click or tap the channel status label at the bottom of the
screen. Then the menu as shown in the figure below is displayed.
Figure 5.1 Vertical Menu
5.1 To Enable or Disable the Analog Channel
Enable the Analog Channel
When a signal is connected to CH1, you can enable the channel in the following ways.
• Click or tap the channel status label at the bottom of the screen to enable the
channel.
• Press the front-panel key to enable the channel, and the backlight of this
key is illuminated.
• In
Vertical System
menu, select the CH1 tab. Click or tap the Display on/off
switch to turn CH1 on or off.
When CH1 is activated, its status label at the bottom of the screen is as shown in the
figure below.
Vertical System
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DHO1000 User Guide
39
The information displayed in the channel status label is related to the current channel
setting (irrelevant with the on/off status of the channel). After the channel is turned
on, you can modify the parameters such as the vertical scale, horizontal time base,
trigger mode, and trigger level according to the input signal for easy observation and
measurement of the waveform.
When CH1 is enabled but not activated, its status label is as shown in the following
figure.
Click or tap the channel status label at the bottom of the screen or press the front-
panel key to activate CH1. You can also select the CH1 tab in Vertical menu to
activate it.
Disable the analog channel
You can disable the analog channel in the following ways.
• If CH1 has been enabled and activated, you can press on the front panel
to disable it directly. You can also click or tap the channel status label at the
bottom of the screen to open the Vertical menu and then click or tap the label
again to disable the channel.
• If CH1 has been enabled but not activated, first activate the channel. Then press
the front-panel key or use the channel status label to disable CH1.
• In
Vertical System
menu, set Display to OFF to disable CH1.
• In addition, you can slide down the channel label to disable the channel.
If CH1 is disabled, its status label is as shown in the figure below.
Vertical System
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5.2 To Adjust the Vertical Scale
Vertical scale indicates the voltage value per grid in the vertical axis of the screen. It is
often expressed in V/div. Adjusting the vertical scale increases or decreases the
display amplitude of the waveform. The scale information of the channel status label
at the bottom of the screen would change accordingly.
The adjustable range of the vertical scale is related to the current probe ratio. By
default, the probe ratio is 1X. In this case, the adjustable range of the vertical scale is
500 μV/div to 10 V/div.
When CH1 is turned on and activated, you can adjust the vertical scale in the
following ways.
• Rotate the Vertical
SCALE knob to adjust the vertical scale (clockwise to
reduce the scale and counterclockwise to increase).
• Enable the touch screen function, and then adjust the vertical scale with the
pinch & stretch gesture on the touch screen. For details, refer to descriptions in
Pinch&Stretch
.
• In the Vertical menu, click or tap the icon at the right side of the input field of
Scale to increase or decrease the scale value or use the corresponding
multipurpose knob on the front panel to set the value. You can also click or tap
the input field to input a specific value with the displayed numeric keypad.
In the Vertical menu, click or tap the Fine on/off switch to toggle between ON (fine
adjustment) and OFF (coarse adjustment). The default setting is OFF. You can also
press the Vertical SCALE knob to toggle between "coarse adjustment" and "fine
adjustment".
Vertical System
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DHO1000 User Guide
41
• Fine adjustment: Use the icons at the right side of Scale or rotate the knob to
further adjust the vertical scale within a relatively smaller range to improve
vertical resolution. If the amplitude of the input waveform is a little bit greater
than the full scale under the current scale but a little bit lower if the next scale is
used, fine adjustment can be used to improve the amplitude of waveform
display to view signal details.
• Coarse adjustment: Use the icons at the right side of Scale or rotate the knob to
adjust the vertical scale in a 1-2-5 step sequence, i.e. 500 μV/div, 1 mV/div, 2
mV/div, 5 mV/div, 10 mV/div...10 V/div.
5.3 To Adjust the Vertical Offset
Vertical offset indicates the offset of the signal ground level position of the waveform
from the vertical center of the display. Its unit is consistent with the currently selected
amplitude unit (refer to
To Specify the Amplitude Unit
). Adjusting the vertical offset
moves the corresponding channel's waveform up and down. The vertical offset
information (as shown in the following figure) in the channel status label at the
bottom of the screen will change accordingly.
The adjustable range of the vertical offset is related to the current probe ratio and
vertical scale.
When CH1 is turned on and activated, you can adjust the vertical offset in the
following ways.
• Rotate the Vertical POSITION knob at the right section of the front panel to
adjust the vertical offset within the adjustable range. Rotate this knob clockwise
to increase the vertical offset or rotate it counterclockwise to reduce the vertical
offset. Pressing the knob can quickly reset the vertical offset (set the vertical
offset to 0).
• Enable the touch screen function, and then adjust the vertical offset with the
drag gesture. For details, refer to
Drag
.
• In Vertical menu, click or tap the Up/Down arrow icon at the right side of the
input field of Offset to increase or decrease the offset value or use the
corresponding multipurpose knob to set the value. You can also click or tap the
input field to input a specific value with the displayed numeric keypad.
Vertical System
DHO1000 User Guide
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5.4 To Specify Channel Coupling
You can remove unwanted signals by setting the coupling mode. For example, the
signal under test is a square waveform with DC offset.
Click or tap the channel status label at the bottom of the screen. Then the Vertical
menu is displayed. Click or tap the Coupling drop-down button to select the coupling
mode.
• When the coupling mode is "DC", both the DC and AC components of the signal
under test can pass the channel.
• When the coupling mode is "AC", the DC components of the signal under test
are blocked.
• When the coupling mode is "GND", the DC and AC components of the signal
under test are blocked.
After a coupling mode is selected, it is indicated in the channel status label at the
bottom of the screen, as shown in the figure below.
TIP
When the input impedance is set to "50 Ω", the channel coupling is set to DC coupling by
force. The
Coupling menu item is grayed out and cannot be modified.
5.5 To Specify Bandwidth Limit
This series oscilloscope supports the bandwidth limit function. Setting the bandwidth
limit can reduce the noises in the displayed waveforms. For example, the signal under
test is a pulse with high frequency oscillation.
Vertical System
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DHO1000 User Guide
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Click or tap the channel status label at the bottom of the screen, and then the
Vertical menu is displayed. Click or tap the BW Limit drop-down button to select the
specified bandwidth. When the bandwidth limit is enabled, the specific bandwidth
limit value will be displayed in the channel status label at the bottom of the screen, as
shown in the figure below.
• When the bandwidth limit is turned off, the high frequency components of the
signal under test can pass the channel.
• When the bandwidth limit is turned on, the high frequency components found in
the signal under test that are greater than the limit are attenuated. DHO1000
series oscilloscope supports 20 MHz bandwidth limit.
TIP
Bandwidth limit can not only reduce the noise, but also can attenuate or eliminate the high
frequency components of the signal.
5.6 To Specify Input Impedance
This series oscilloscope provides 1 MΩ input impedance mode. In this mode, the
input impedance of the oscilloscope is very high, and the current flowed from the
circuit under test can be ignored.
5.7 To Invert a Waveform
Click or tap the channel status label at the bottom of the screen, and then the
Vertical menu is displayed. Then click or tap the Invert on/off switch to enable or
disable the waveform invert function.
When "ON" is selected, the channel label is as shown in the figure below.
Vertical System
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When the Invert function is disabled, the waveform is displayed normally; when
enabled, the voltage values of the displayed waveform are inverted, as shown in the
figure below. Inverting a waveform also changes the result of math function,
waveform measurement, etc.
"Invert" On
"Invert" On
"Invert" Off
"Invert" Off
Figure 5.2 Waveform Invert On/Off
TIP
When the Invert function is turned on, the trigger (e.g. Edge trigger, Pulse trigger, or Slope
trigger) edge or polarity will be changed.
5.8 To Set Probe
The analog channel of this oscilloscope supports passive probes. For detailed
technical information of the probes, please refer to the corresponding Probe User
Guide.
Click or tap the channel status label at the bottom of the screen. Then the menu
Vertical is displayed. Then click or tap Probe to enter the Probe setting menu, as
shown in the figure below.
Vertical System
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DHO1000 User Guide
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Figure 5.3 Probe Setting Menu
Probe Ratio
The oscilloscope allows you to set the probe attenuation manually. To obtain the
accurate measurement results, you must set the probe ratio properly. By default, the
probe ratio is 1X.
The probe ratio values available are as shown in the following table.
Table 5.1 Probe Ratio
Menu
Attenuation
(display amplitude of the signal: actual
amplitude of the signal)
0.001X
0.002X
0.005X
0.01X
0.02X
0.05X
0.1X
0.2X
0.5X
1X (default)
0.001:1
0.002:1
0.005:1
0.01:1
0.02:1
0.05:1
0.1:1
0.2:1
0.5:1
1:1
Vertical System
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Menu
Attenuation
(display amplitude of the signal: actual
amplitude of the signal)
2X
5X
10X
20X
50X
100X
200X
500X
1000X
2000X
5000X
10000X
20000X
50000X
2:1
5:1
10:1
20:1
50:1
100:1
200:1
500:1
1000:1
2000:1
5000:1
10000:1
20000:1
50000:1
TIP
The oscilloscope auto-recognizes certain probes with a fixed attenuation ratio. After that, the
probe ratio will also be auto recognized to save you from configuring it manually.
Skew
The difference in the delays between the probes, known as skew, can cause great
cable-delay errors in measurement results. To eliminate this problem, this series
oscilloscope provides the deskew function. Click or tap the
Skew input field to set the
delay time with the pop-up numeric keypad. You can also use the corresponding
numeric keypad to set the value. The value ranges from -100.00 ns to 100.00 ns, and
the default is 0.00 s.
Go Back to the Vertical Menu
In the Probe setting menu, click or tap Vertical to go back to the Vertical menu.
Vertical System
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5.9 To Specify the Amplitude Unit
Click or tap the channel status label at the bottom of the screen, and then the
Vertical menu is displayed. Click or tap the Unit drop-down button to select W, A, V,
or U. The default unit is V.
Changing the amplitude unit also changes the units of the functions related to the
channel accordingly.
5.10 To Adjust Bias
When you use an oscilloscope to make actual measurements, a small offset that arises
from the temperature drift of the component or external environment disturbance
may occur on the zero-cross voltage of the channel, which will affect the
measurement results of the vertical parameters. This series oscilloscope allows you to
set an offset calibration voltage for calibrating the zero point of the corresponding
channel so as to improve the accuracy of the measurement results.
Click or tap the Up/Down arrow icon at the right side of the input field of Bias to
increase or decrease the bias value. You can also click or tap the input field to set the
value with the pop-up numeric keypad. You can also use the corresponding
multipurpose knob to set the value.
The range of bias is related to the input impedance and the vertical scale.
TIP
If the zero-cross voltage of the channel has a larger amplitude offset that exceeds the
adjustable null range, please perform self-calibration for the instrument to ensure the
measurement accuracy. For details, please refer to
SelfCal
.
5.11 To Specify the Skew
When using an oscilloscope for actual measurement, the transmission delay of the
probe cable may bring relatively greater errors (zero offset). This series oscilloscope
allows you to set a delay time for calibrating the zero offset of the corresponding
Vertical System
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channel. Zero offset is defined as the offset of the crossing point of the waveform and
trigger level line relative to trigger position, as shown in the figure below.
Figure 5.4 Zero Offset
In the "Vertical" menu, click or tap the Ch-Ch Skew input field to set the channel-to-
channel skew time. The available range is from -100 ns to 100 ns, and the default is
0.00 s.
5.12 To Turn the Channel Label Display On/Off
The instrument uses the channel number to mark the corresponding channel by
default. For ease of use, you can also set a label for each channel. For example,
.
Click or tap the channel status label at the bottom of the screen. Then the Vertical
menu is displayed. Click or tap the Label on/off switch to turn the label display on or
off. You can also click or tap the label input field to input a specific name for the
channel label with the pop-up keypad.
For how to use the keypad, please refer to descriptions in
Parameter Setting Method
.
Vertical System
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DHO1000 User Guide
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6
Horizontal System
You can access the Horizontal menu in the following ways.
• Press the front-panel key to enter the Horizontal menu.
• Click or tap the channel status label at the bottom of the screen. Then the
Vertical menu is displayed. Click or tap the Acquisition button to enter the
Horizontal menu.
• Click or tap the horizontal time base label ("H" icon), acquisition label ("A" icon),
or horizontal position label ("D" icon) at the top of the screen to enter the
Horizontal menu.
Figure 6.1 Horizontal Menu
6.1 To Adjust the Horizontal Time Base
Horizontal time base, also called the horizontal scale, refers to the time of each grid in
the horizontal direction of the screen. It is usually expressed in s/div. The range of the
horizontal time base is from 2.00 ns/div to 1.00 ks/div.
While you change the horizontal time base, the displayed waveforms of all channels
are expanded or compressed horizontally relative to the selected time reference
Horizontal System
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(
Horizontal Expansion Reference
). The horizontal time base in the horizontal time
base label ("H" icon) will change accordingly, as shown in the figure below.
You can adjust the horizontal time base in the following ways.
• Rotate the front-panel Horizontal SCALE knob to adjust the horizontal time
base (clockwise to reduce the scale and counterclockwise to increase).
• Enable the touch screen function, and then adjust the horizontal time base with
the Pinch&Stretch gesture. For details, refer to
Pinch&Stretch
.
• In the Horizontal menu, click or tap the icon at the right side of the input field of
Scale to increase or decrease the horizontal time base or use the corresponding
multipurpose knob to set the value. You can also click or tap the input field to
input a specific value with the displayed numeric keypad.
In the Horizontal menu, you can click or tap the Vernier on/off switch to toggle
between ON (fine adjustment) and OFF (coarse adjustment). You can also press the
front-panel Horizontal SCALE knob to toggle between "coarse adjustment" and
"fine adjustment".
• Coarse adjustment: Click or tap the icons at the right side of the input field of
Scale to adjust the horizontal time base of the waveforms of all channels in a
1-2-5 step sequence within the adjustable range.
• Fine adjustment: Click or tap the icon at the right side of the input field of Scale
to adjust the horizontal time base of the waveforms of all channels at a smaller
step within the adjustable range.
6.2 To Adjust the Horizontal Position
Horizontal position, also called trigger position, refers to the trigger point position of
the waveforms of all channels in the horizontal direction relative to the center of the
display. When the waveform trigger point is at the left (right) side of the center, the
horizontal position is a positive (negative) value.
Changing the horizontal position moves the waveform trigger points and the
displayed waveforms of all channels horizontally. The horizontal position displayed in
Horizontal System
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the horizontal position label ("D" icon) changes accordingly, as shown in the figure
below.
You can adjust the horizontal position in the following ways.
• Rotate the Horizontal POSITION knob at the right section of the front panel
to adjust the horizontal position within the adjustable range. Rotate this knob
clockwise to reduce the horizontal position or counterclockwise to increase the
horizontal position. Pressing the knob can quickly reset the horizontal position
(set the horizontal position to 0).
• Enable the touch screen function, and then adjust the horizontal position with
the drag gesture. For details, refer to
Drag
.
• In the "Horizontal" menu, use the corresponding multipurpose knob to set the
horizontal position or use the icons at the right side of the input field of Position
to increase or decrease the value, as shown in the figure below. You can also click
or tap the Position input field to input a specific value with the pop-up numeric
keypad.
6.3 Zoom Mode (Delayed Sweep)
Zoom (delayed sweep mode) can be used to horizontally expand a length of
waveform to view waveform details. In the Horizontal menu, click or tap the Zoom
on/off switch to enable or disable the delayed sweep function. When it is enabled,
you can set the scale and position in Zoom mode.
• Zoomed Scale: Rotate the corresponding multipurpose knob or use the icons at
the right of the
Scale input field to increase or decrease the time base for the
Horizontal System
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Zoom window. You can also click or tap the input field to input the specific value
directly via the pop-up numeric keypad.
• Zoomed Position: Rotate the corresponding multipurpose knob or use the icons
at the right of the Position input field to increase or decrease the position for
the Zoom window. You can also click or tap the input field to input the specific
value directly via the pop-up numeric keypad.
When the Zoom mode is enabled, the display divides in half, as shown in the figure
below.
Figure 6.2 Zoom Mode
• Waveform before expansion:
The upper portion of the display that is not covered by subtransparent gray
shows the normal display of the waveform. Its horizontal time base (called the
main time base) is indicated in the label at the upper-left corner of the display.
You can move the area left and right by adjusting the horizontal position and
increase or decrease the size of the area by adjusting the horizontal scale.
• Waveform after expansion:
The lower portion shows the horizontally expanded version of the normal
waveform display. Its horizontal time base (called the zoomed time base) is
displayed in the middle. Compared with the main time base, the zoomed time
base has higher horizontal resolution.
Horizontal System
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TIP
The zoomed time base should be smaller than or equal to the main time base.
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7
Acquisition System
The "Horizontal" menu allows you to configure the instrument's acquisition system.
Figure 7.1 Horizontal Menu
7.1 Acquisition Mode
The acquisition mode is used to determine how the waveform points are calculated
from the sample points. In the Horizontal menu, click or tap the desired acquisition
mode for the Acquisition item. This oscilloscope provides five acquisition modes:
Normal (default), Average, Peak, High Res, and UltraAcquire. The selected acquisition
mode is indicated in the acquisition label ("A" icon) at the top of the screen.
Normal
In Normal acquisition mode, the oscilloscope samples the signal at a fixed time
interval to rebuild the waveform. This mode produces the best display for most
waveforms.
Average
In this mode, the oscilloscope averages the waveforms from multiple acquisitions to
reduce the random noise of the input signal and increase the vertical resolution. A
greater number of averages lowers the noise and increases the vertical resolution. On
the other hand, the higher the number of averages, the slower the response of the
displayed waveform to waveform changes.
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When you select "Average" mode, click or tap the Averages input field to set the
number of averages with the pop-up numeric keypad or use the corresponding
multipurpose knob to set the value. Its range is from 2 (default) to 65,536.
TIP
The number of averages must be the Nth power of 2. When it is not in N power-of-2
increments, a prompt message "Truncation average error" is displayed. At this time, a value
that is smaller than the one you input and the closest to N power-of-2 increments will be input
automatically.
Peak
In this mode, the oscilloscope acquires the maximum and minimum values of the
signal within the acquisition interval to get the signal envelope or capture narrow
pulses that might be lost. This mode prevents signal aliasing at the expense of
exaggerating the noise.
In this mode, the minimum pulse width detected is the sample period.
High Resolution
This mode uses a kind of ultra-sample technique to average sequential sample points
to reduce the random noise on the input signal and generate much smoother
waveforms on the screen. This is generally used when the sample rate of the digitizer
is higher than the storage rate in acquisition memory.
When you select "High Res" mode, click or tap the bits drop-down button to select
14 (default) or 16. The bandwidth of the selected bit is displayed behind the box.
TIP
• The averaging modes of the "Average" and "High Res" are different. The former uses
"Multi-sample Average" and the latter uses "Single Sample Average".
• In "High Res" mode, the oscilloscope improves the measurement accuracy at the cost of
bandwidth. Each time the sample rate changes, the current bandwidth is indicated at the
right side of
bits in the menu.
UltraAcquire
UltraAcquire mode is one of the fast acquisition modes. It divides the oscilloscope's
memory into segments and fills a memory segment for each individual trigger event.
It provides a much higher waveform capture rate and helps minimize the dead time
between trigger events.
When you select "UltraAcquire" mode, click or tap
Max Frames input field to set the
maximum number of frames and Timeout input field to set the timeout. When the
number of the frames reaches the maximum or the sampling time reaches the
timeout, the oscilloscope stops sampling and plots the waveform. Click or tap the
Display mode drop-down button to select the display mode of the acquired data.
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• Adjacent: Waveform segments are shown in an adjacent way with each segment
shown next to the previous segment in time order. A maximum of 100 frames
can be displayed on the screen at a time in this mode.
• Overlay: All the captured waveform segments are overwritten to display as one
single segment of the waveform. A maximum of 100 frames can be displayed on
the screen at a time in this mode.
• Waterfall: It displays the captured waveform segments in a cascaded display
order. A maximum of 100 frames can be displayed on the screen at a time in this
mode.
• Perspective: The waveform segments are displayed in the ladder-like form, with
each segment being arranged above another with a certain perspective (angle),
moving up like a rising slope. A maximum of 100 frames can be displayed on the
screen at a time in this mode.
• Mosaic: The whole waveform view is divided into several blocks, and each
waveform segment is displayed in each block in sequence. A maximum of 80
frames can be displayed on the screen at a time in this mode.
Figure 7.2 Display Modes
TIP
• The UltraAcquire mode is not available when any of the following functions is enabled:
cursors, decoding, Search, Zoom, Pass/Fail test, waveform recording, reference waveform,
roll mode, slow sweep mode, and XY mode. To switch to the UltraAcquire mode, please
ensure that all of those functions are disabled.
• In UltraAcquire mode, the functions mentioned above (except for roll mode and slow
sweep mode) are disabled. When roll mode or slow sweep mode is enabled, the
acquisition mode is automatically switched to "Normal".
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7.2 Sampling Mode
This oscilloscope only supports the real-time sampling mode. In this mode, the
oscilloscope produces the waveform display from samples collected during one
trigger event. The maximum real-time sample rate of this series is 2 GSa/s. The
current sample rate is displayed in the acquisition label at the top of the screen.
By default, the operating status label at the left top of the screen is illuminated in
green, indicating that the instrument is in real-time sampling, and the STOP/RUN
button on the toolbar is in green. Click or tap the STOP/RUN button or press the
front-panel key to stop sampling. At this time, the operating status label shows
"STOP" in red, and the STOP/RUN button turns red. Also, the backlight of the front-
panel key turns red. The oscilloscope will maintain its last captured graph. You
can still pan or zoom the waveforms by using the horizontal/vertical controls.
7.3 Sample Rate
Sampling is the process of converting an analog signal into digital data at a specified
time interval and then storing them sequentially in acquisition memory. The sample
rate is the reciprocal of the time interval.
In Horizontal menu, the "SaRate" item shows the current sample rate. The current
sample rate is also indicated in the acquisition label ("A" icon) at the top of the
screen, as shown in the figure below.
The sample rate of the analog channel is related to the instrument model and the
current channel mode. For two-channel models (DHO1072, DHO1102, and DHO1202),
the oscilloscope provides up to 2 GSa/s real-time sample rate in single channel mode
and 1 GSa/s real-time sample rate in all channels mode. For four-channel models
(DHO1074, DHO1104, and DHO1204), the oscilloscope provides up to 2 GSa/s real-
time sample rate in single channel mode, 1 GSa/s real-time sample rate in half
channels mode, and 500 MSa/s real-time sample rate in all channels mode.
• Single channel mode: If any one of the channels is enabled, it is called single
channel mode.
• Half channels mode: For four-channel models, if two of the channels are
enabled, it is called half channels mode.
• All channels mode: For two-channels models, if all two channels are enabled, it
is called all channels mode; for four-channel models, if any three channels or all
four channels are enabled, it is called all channels mode.
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A sample rate that is too low might have the following effects on the waveform:
• Waveform Distortion: When the sample rate is too low, some waveform details
are lost, and the sample waveform displayed is rather different from the actual
waveform of the signal.
• Waveform Aliasing: Aliasing occurs when the sample rate is twice lower than
the actual signal frequency (Nyquist Frequency). The frequency of the waveform
reconstructed from the sample data is smaller than the actual signal frequency.
• Waveform Leakage: If the sample rate is too low, the waveform reconstructed
from the sample data does not represent the original signal correctly.
7.4 Memory Depth
Memory depth refers to the number of points that the oscilloscope can store in a
single trigger acquisition. It reflects the storage capability of the acquisition memory.
DHO1000 series oscilloscope provides up to 50 Mpts memory depth (100 Mpts
optional).
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Pre-Sample Delayed Sample
Memory Depth
Trigger Point
T
Figure 7.3 Memory Depth
The following formula shows the relations among memory depth, sample rate, and
horizontal time base:
MDepth ≥ SRate * TSCale * HDivs
•
MDepth
indicates the memory depth. The unit is pts.
•
SRate
indicates the sample rate. The unit is Sa/s.
•
TSCale
indicates the horizontal time base scale. The unit is s/div.
•
HDivs
indicates the number of grids in the horizontal direction. The unit is div.
Therefore, with the same horizontal time base, a higher memory depth can ensure a
higher sample rate.
In Horizontal menu, click or tap the Mem Depth drop-down button to select the
memory depth. The default setting is "10k". The selected memory depth value is
displayed in the acquisition label ("A" icon) at the top of the screen.
• When only one of the channels is enabled, the memory depths available include
Auto, 1 kpts, 10 kpts, 100 kpts, 1 Mpts, 10 Mpts, 25 Mpts, 50 Mpts, and 100 Mpts
(optional).
• When two of the channels are enabled, the memory depths available include
Auto, 1 kpts, 10 kpts, 100 kpts, 1 Mpts, 10 Mpts, 25 Mpts, and 50 Mpts
(optional).
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• When three channels or all four channels are enabled (only available for four-
channel models), the memory depths available include Auto, 1 kpts, 10 kpts, 100
kpts, 1 Mpts, 10 Mpts, and 25 Mpts (optional).
TIP
• In "Auto" mode, the oscilloscope selects the memory depth automatically according to
the current sample rate.
• When
Acquisition Mode
is set to "High Res", "Auto" is not available for the memory
depth setting.
• When
Acquisition Mode
is set to "Average", only 1 kpts, 10 kpts, 100 kpts, 1 Mpts, and 10
Mpts are available for the memory depth setting.
7.5 Horizontal Expansion Reference
This function allows you to set the position that the waveform on the display is
referenced to when it is horizontally expanded or compressed when the horizontal
time base is adjusted. In the Horizontal menu, click or tap the Expand drop-down
button to select the reference position. Available options include Center (default),
Left, Right, Trigger, and User.
• Center: when the horizontal time base is modified, the waveform will be
expanded or compressed horizontally relative to the center of the display.
• Left: when the horizontal time base is modified, the waveform will be expanded
or compressed horizontally relative to the leftmost position of the display.
• Right: when the horizontal time base is modified, the waveform will be
expanded or compressed horizontally relative to the rightmost position of the
display.
• Trigger: when the horizontal time base is modified, the waveform will be
expanded or compressed horizontally relative to the trigger point.
• User: when the horizontal time base is modified, the waveform displayed will be
expanded or compressed horizontally relative to the user-defined reference
position.
When you select "User", click or tap the User Expansion input field and set the
value with the displayed numeric keypad. Its range is from -500 to 500, and the
default is 0.
7.6 Roll Mode
The roll mode causes the waveform to move across the screen from right to left. It
allows you to view the acquired data without waiting for a complete acquisition. In
Horizontal menu, select "Auto" or "OFF" in Roll.
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• Auto: the Roll mode is enabled. It is automatically enabled when the horizontal
scale is 50 ms/div or slower.
• OFF: the Roll mode is disabled. The oscilloscope operates at slow sweep speeds
when the horizontal scale is 200 ms/div or slower. In slow sweep mode, the
oscilloscope acquires the data to the left of the trigger point and then waits for
trigger. After the trigger occurs, it continues to acquire the data to the right of
the trigger point. When you use this mode to observe low-frequency signals, it is
recommended to set the channel coupling mode (
To Specify Channel Coupling
)
to "DC".
TIP
• If the Zoom mode is currently turned on, enabling the roll mode automatically turns off
the Zoom mode.
• The following functions are not available when the roll mode is enabled:
To Adjust the Horizontal Position
(available when the oscilloscope run state is STOP),
Zoom Mode (Delayed Sweep)
,
Triggering the Oscilloscope
,
Protocol Decoding
,
Pass/Fail
Test
,
Waveform Recording and Playing
,
Persistence Time
,
UltraAcquire
,
Average
,
XY
Mode
.
7.7 XY Mode
By default, this series oscilloscope uses the YT mode for waveform display window. In
YT mode, Y-axis indicates the Voltage and X-axis indicates the Time. Besides, it also
supports the XY display in which both X-axis and Y-axis indicate voltage. The XY
mode converts the oscilloscope from a "Voltage-Time" display to a "Voltage-Voltage"
display using two input channels.
Enable the XY Mode
You can enable the XY display mode in the following ways.
• Click or tap the Windows button in the function navigation menu or on the
toolbar to enter the Add Window menu. In the "Diagram" item, click or tap XY >
Add to enable the XY display mode.
• Click or tap the XY button in the function navigation menu or on the toolbar to
enable the XY display mode.
• In the "Horizontal" menu, tick XY to enable the XY mode.
Configure the XY Mode
Click or tap
at the upper-right corner of the XY display window to enter the XY
configuration menu.
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Figure 7.4 XY Menu
• Source: Click or tap the drop-down button of "Source X" to select the source
channel of the X-axis in the XY window. Click or tap the drop-down button of
"Source Y" to select the source channel of the Y-axis in the XY window.
In the Add Window menu, you can also configure Source Z. Source Z, as the Z-
axis input in the XY display mode, is used to control whether to display the X-Y
waveforms in the XY display mode. This function is called "blanking".
- When "None" is selected for "Source Z", the blanking function is disabled,
and you can only see the X-Y waveforms.
- When you select "CH1-CH4" for "Source Z", the blanking function is
enabled. The Z-axis input from the external connector determines whether
to display the X-Y waveforms. When Z is high (the input level is greater than
0 V), the X-Y waveforms are displayed; when Z is low (the input level is
smaller than 0 V), the waveforms are hidden.
• Grid: Please refer to
To Set the Screen Grid
.
NOTE
Advanced settings are not available for now. The current settings can produce the best display.
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Phase Deviation Measurement
In this mode, you can use the Lissajous method to measure the phase deviation of the
two input signals whose frequencies are the same. The following figure shows the
measurement schematic diagram of phase deviation.
Figure 7.5 Measurement Schematic Diagram of Phase Deviation
According to sinƟ = A/B or C/D, Ɵ is the phase deviation angle between the two
channels. The definitions of A, B, C, and D are shown in the figure above. The phase
deviation angle is obtained, that is:
Ɵ=±arcsin(A/B) or ±arcsin(C/D)
If the principal axis of the ellipse is within Quadrant I and III, the phase deviation
angle obtained should be within Quadrant I and IV, namely within (0 to π/2) or (3π/2
to 2π). If the principal axis of the ellipse is within Quadrant II and IV, the phase
deviation angle obtained should be within Quadrant II and III, namely within (π/2 to
π) or (π to 3π/2).
The XY mode can be used to measure the phase deviation occurred when the signal
under test passes through a circuit network. Connect the oscilloscope to the circuit to
monitor the input and output signals of the circuit.
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8
Triggering the Oscilloscope
The trigger system allows you to set specific trigger conditions as required. The
oscilloscope captures a waveform as well as its neighboring part and displays them
on the screen once a particular trigger condition is met. For a digital oscilloscope, it
samples waveform continuously no matter whether it is stably triggered. Rather, only
stable triggering can produce stable display. The trigger module ensures that every
time base sweep or acquisition starts from the user-defined trigger condition, namely
every sweep is synchronous with the acquisition and the waveforms acquired are
overlapped so as to display the stable waveforms.
You should set the triggers based on the features of the input signal. To quickly
capture your desired waveforms, you need to understand the signal under test. This
oscilloscope provides a variety of trigger types that help you focus on the desired
waveform details.
You can enter the Trigger menu in the following ways.
• Press the front-panel key to enter the trigger menu.
• In
Vertical System
menu, click or tap the Trigger button to enter the trigger
menu.
• Click or tap the trigger label (as shown in the figure below) at the top of the
screen to enter the trigger menu.
8.1 Trigger Source
In the "Trigger" menu, click or tap the drop-down button of Source to select the
desired source. Analog channels (CH1-CH4), AC Line, or EXT (external trigger) can be
selected as the trigger source.
Analog channel input
Signals input from analog channels CH1-CH4 can all be used as trigger sources. No
matter whether the channel selected is enabled, the channel can work normally.
AC line input
The trigger signal is obtained from the AC power input of the oscilloscope. AC trigger
is usually used to measure signals relevant to the AC power frequency. For example, it
can stably trigger the waveform output from the transformer of a transformer
substation. It is mainly used in related measurements of the power industry.
Triggering the Oscilloscope
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External trigger input
The external trigger source can be used to trigger on the fifth channel while all the
other four channels are acquiring data. The trigger signal (e.g. external clock or signal
of the circuit under test) will be connected to EXT trigger source via the external
trigger input terminal [EXT TRIG] connector. You can set the trigger conditions within
the range of the trigger level (from -8 V to +8 V).
8.2 Trigger Level
Trigger level determines where on the selected edge the trigger point occurs. The
adjustment of the trigger level is related to the type of the trigger source.
• When the trigger source is CH1-CH4, rotate the front-panel LEVEL knob or
use the corresponding multipurpose knob (when the trigger menu is opened) to
adjust the trigger level. You can also click or tap the Level input field to set the
value with the pop-up numeric keypad. During the adjustment, a trigger level
line (the color of the trigger level line is the same as that of the channel) and a
trigger icon " " are displayed on the screen, and they move up and down
with the variation of the trigger level. When you stopping modifying the trigger
level, the trigger level line disappears in about 2 s. The current trigger level is
displayed in the trigger information label at the top of the screen.
In Runt Trigger, Slope Trigger, and Window trigger, you need to set the upper
and lower limits of the trigger level. Two trigger level icons and are
displayed at the right section of the screen.
• When the trigger source is AC Line, there is no trigger level.
• When the trigger source is EXT, rotate the front-panel LEVEL knob or use the
corresponding multipurpose knob (when the trigger menu is opened) to adjust
the trigger level. You can also click or tap the Level input field to set the value
with the pop-up numeric keypad. The current trigger level is displayed in the
trigger information label at the top of the screen.
For this trigger source, only the variation of the trigger level value is displayed
on the screen during the adjustment of the trigger level, without displaying the
trigger level lines on the screen.
To better trigger the waveforms, for a trigger with a single level, you can directly click
or tap
50% in the menu or press the trigger level knob to make the level move to the
middle of the waveform. However, for a trigger with two levels (e.g. Slope trigger,
Runt trigger, Window trigger), you need to click or tap 90% for Level A and 10% for
Level B to make the level move within the range of the waveform amplitude.
Triggering the Oscilloscope
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8.3 Trigger Mode
The following is the schematic diagram of the acquisition memory. To better
understand the trigger event, you can think of the trigger event as dividing
acquisition memory into a pre-trigger and post-trigger buffer.
Pre-trigger Buffer Post-trigger Buffer
Trigger Event
Acquisition Memory
Figure 8.1 Schematic Diagram of the Acquisition Memory
After the oscilloscope starts running, it first fills the pre-trigger buffer. Then, after the
pre-trigger buffer is filled, the oscilloscope starts searching for a trigger. While
searching for the trigger, the data sampled will still be transmitted to the pre-trigger
buffer (the new data will continuously overwrite the previous data). When a trigger is
found, the pre-trigger buffer contains the events that occurred just before the trigger.
Then, the oscilloscope will fill the post-trigger buffer and display the data in the
acquisition memory. If the acquisition is initiated via the front-panel
key, the
process repeats; if the acquisition is initiated via the key, it stops after finishing
a single acquisition (you can pan and zoom the currently displayed waveform).
This series provides Auto (default), Normal, and Single trigger modes.
Click or tap the trigger information label (as shown in the figure below) at the top of
the screen or press the front-panel key to open the "Trigger" menu. In the
Sweep item, you can quickly switch the current trigger mode. The selected trigger
mode is displayed in the trigger information label at the top of the screen: A (Auto), N
(Normal), or S (Single).
• Auto: In this trigger mode, if the specified trigger conditions are not found,
triggers are forced and acquisitions are made so that signal activity is displayed
on the oscilloscope. This trigger mode can be used when the signal levels are
unknown, when the DC signals should be displayed, or when trigger conditions
occur often enough that forced triggers are unnecessary.
Triggering the Oscilloscope
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• Normal: In this trigger mode, triggers and acquisitions only occur when the
specified trigger conditions are found. This trigger mode can be used when the
signal is at a low repetition rate, when you only want to acquire specific events
specified by the trigger settings, or when you try to stabilize the display by
preventing the oscilloscope from auto-triggering.
• Single: In this trigger mode, a single trigger and acquisition only occur when the
specified trigger conditions are found, and then the oscilloscope stops. This
trigger mode can be used when you need to make a single acquisition of the
specified event and analyze the acquisition result. You can pan and zoom the
currently displayed waveform without subsequent waveform data overwriting
the current waveform. After a single trigger is initiated, the oscilloscope is in
"STOP" state.
In Normal and Single trigger modes, you can click or tap the Force button in the
trigger menu or press the front-panel key to force a trigger event.
8.4 Trigger Coupling
Trigger coupling determines what part of the signal is passed to the trigger circuit.
Please distinguish it from channel coupling (
To Specify Channel Coupling
). This
function is available only when the trigger type is Edge and the trigger source is an
analog channel.
In the "Trigger" menu, click or tap the Coupling drop-down button to select the
desired coupling mode (by default, it is DC).
• DC: allows DC and AC components to pass the trigger circuitry.
• AC: blocks the DC components and attenuates the signals.
• LFR: blocks the DC components and rejects the low-frequency components.
• HFR: rejects the high frequency components.
TIP
When "AC" or "LFR" is selected as the coupling mode, no trigger level lines and trigger icons
are displayed. When you adjust the trigger level, you can only see the changes of the trigger
level values in the trigger information label at the top of the screen.
Triggering the Oscilloscope
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8.5 Trigger Holdoff
Trigger holdoff can be help stabilize triggering on complex repetitive waveforms that
have multiple edges or other events between waveform repetitions (such as pulse
series). Holdoff time is specified as the amount of time that the oscilloscope waits for
re-arming the trigger circuitry after generating a correct trigger. The oscilloscope will
not trigger even if the trigger condition is met during the holdoff time and will only
re-arm the trigger circuitry after the holdoff time expires.
For example, to get a stable trigger on the repetitive pulse burst as shown in the
figure below, set the holdoff time to be greater than t1 but less than t2.
Figure 8.2 Trigger Holdoff
Click or tap the trigger information label (as shown in the figure below) at the top of
the screen or press the front-panel
key to open the "Trigger" menu. Click or
tap the input field of Holdoff to set the holdoff time (the holdoff to this time when
the waveforms are stably triggered) with the pop-up numeric keypad. You can also
use the corresponding multipurpose knob to set the value. The adjustable range of
the holdoff time is from 8 ns (default) to 10 s.
8.6 Noise Rejection
Noise rejection can reject the high frequency noise in the signal and reduce the
possibility of triggering the oscilloscope by mistake.
Triggering the Oscilloscope
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Click or tap the trigger information label (as shown in the figure below) or press the
front-panel key to open the "Trigger" menu. Click or tap the Noise Reject
on/off switch to enable or disable the noise rejection function.
TIP
This function is available only when the trigger source is set to an analog channel or EXT.
8.7 Trigger Type
This series oscilloscope provides the following trigger types.
8.7.1 Edge Trigger
Edge trigger identifies a trigger on the trigger level of the specified edge on the input
signal.
Trigger Type
Click or tap the Type drop-down button to select "Edge".
Figure 8.3 Edge Trigger Setting Menu
After a trigger type is selected, the current trigger setting information (including the
trigger type, source, and level) is displayed in the trigger information label at the top
of the screen, as shown in the figure below. The information will change based on the
trigger settings.
Triggering the Oscilloscope
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Source Selection
Click or tap Source drop-down button to select CH1-CH4, AC Line, or EXT. For details,
refer to
Trigger Source
. The selected trigger source is indicated in the trigger
information label at the top of the screen.
Only when you select the channel that has signal inputs as the trigger source, can you
obtain a stable trigger.
Edge Type
In the Slope item, select which edge of the input signal will trigger the oscilloscope.
The selected slope will be indicated in the trigger information label.
• Rising: triggers on the rising edge of the input signal when the voltage level
meets the specified trigger level.
• Falling: triggers on the falling edge of the input signal when the voltage level
meets the specified trigger level.
• Either: triggers on the rising or falling edge of the input signal when the voltage
level meets the preset trigger level.
TIP
When edge trigger is selected, you can also press the front-panel key to switch the
edge type.
Trigger Mode
In
Sweep, select Auto, Normal, or Single as the trigger mode. For details, refer to
descriptions in
Trigger Mode
.
Trigger Parameter Setting
You can refer to
Trigger Coupling
,
Trigger Holdoff
, and
Noise Rejection
to set the
trigger coupling, trigger holdoff, and noise rejection under this trigger type.
Trigger Level
Click or tap the Level input field to set the trigger level with the pop-up numeric
keypad. You can also use the front-panel trigger level knob or the corresponding
multipurpose knob to set the trigger level. For details, refer to descriptions in
Trigger
Level
. The current trigger level is displayed in the trigger information label at the top
of the screen.
Triggering the Oscilloscope
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8.7.2 Pulse Width Trigger
Pulse width triggering sets the oscilloscope to trigger on the positive or negative
pulse of a specified width. In this mode, the oscilloscope will trigger when the pulse
width of the input signal satisfies the specified pulse width condition.
In this oscilloscope, positive pulse width is defined as the time difference between the
two crossing points of the trigger level and positive pulse; negative pulse width is
defined as the time difference between the two crossing points of the trigger level
and negative pulse, as shown in the figure below.
Trigger Level
+Width
A
B
-Width
A
B
Trigger Level
Figure 8.4 Positive/Negative Pulse Width
Trigger Type
Click or tap
Type drop-down button to select "Pulse".
Figure 8.5 Pulse Width Trigger Setting Menu
After a trigger type is selected, the current trigger setting information (including
trigger type, trigger source, and trigger level) is displayed in the trigger information
Triggering the Oscilloscope
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label at the top of the screen, as shown in the figure below. The information will
change based on the trigger settings.
Source Selection
Click or tap Source drop-down button to select CH1-CH4. For details, refer to
Trigger
Source
. The selected trigger source is indicated in the trigger information label at the
top of the screen.
Only when you select the channel that has signal inputs as the trigger source, can you
obtain a stable trigger.
Polarity
In the Polarity item, select the desired polarity: positive polarity ( ) or negative
polarity ( ).
Trigger Condition
Set the trigger condition in the When item.
• When you select "Positive" for polarity, ">" for trigger condition, the oscilloscope
triggers when the positive pulse width of the input signal is greater than the
specified pulse width.
• When you select "Positive" for polarity, "<" for trigger condition, the oscilloscope
triggers when the positive pulse width of the input signal is smaller than the
specified pulse width.
• When you select "Positive" for polarity, "< >" for trigger condition, the
oscilloscope triggers when the positive pulse width of the input signal is greater
than the specified lower limit of pulse width and smaller than the specified
upper limit of pulse width.
• When you select "Negative" for polarity, ">" for trigger condition, the
oscilloscope triggers when the negative pulse width of the input signal is greater
than the specified pulse width.
• When you select "Negative" for polarity, "<" for trigger condition, the
oscilloscope triggers when the negative pulse width of the input signal is smaller
than the specified pulse width.
• When you select "Negative" for polarity, "< >" for trigger condition, the
oscilloscope triggers when the negative pulse width of the input signal is greater
than the specified lower limit of pulse width and smaller than the specified
upper limit of pulse width.
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Pulse Width Setting
• In the When menu, when ">" or "<" is selected, click or tap the input field of
Lower or Upper to set the lower limit value or the upper limit value with the
pop-up numeric keypad. You can also use the corresponding multipurpose knob
to set the value. The pulse width available is from 1 ns to 10 s.
• In the When menu, when "< >" is selected, click or tap the input field of Upper
and Lower respectively to set the lower limit value and the upper limit value with
the pop-up numeric keypad. You can also use the corresponding multipurpose
knob to set the values. The lower limit of the pulse width must be smaller than
the upper limit.
Trigger Mode
In Sweep, select Auto, Normal, or Single as the trigger mode. For details, refer to
descriptions in
Trigger Mode
.
Trigger Parameter Setting
You can refer to
Trigger Holdoff
and
Noise Rejection
to set the trigger holdoff and
noise rejection under this trigger type.
Trigger Level
Click or tap the Level input field to set the trigger level with the pop-up numeric
keypad. You can also use the front-panel trigger level knob or the corresponding
multipurpose knob to set the trigger level. For details, refer to descriptions in
Trigger
Level
. The current trigger level is displayed in the trigger information label at the top
of the screen.
8.7.3 Slope Trigger
Slope triggering sets the oscilloscope to trigger on the positive or negative slope of
the specified time. This trigger mode is applicable to ramp and triangle waveforms.
In this oscilloscope, positive slope time is defined as the time difference between the
two crossing points of trigger level line A and B with the rising edge; negative slope
time is defined as the time difference between the two crossing points of trigger level
line A and B with the falling edge. See the figure below.
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Upper Limit of Trigger Level
(Up Level)
Lower Limit of Trigger Level
(Low Level)
A
B
Positive Slope Time
Negative Slope Time
Figure 8.6 Positive Slope Time/Negative Slope Time
Trigger Type
Click or tap the Type drop-down button to select "Slope".
Figure 8.7 Slope Trigger Setting Menu
After a trigger type is selected, the current trigger setting information (including
trigger type, trigger source, and trigger level) is displayed in the trigger information
label at the top of the screen, as shown in the figure below. The information will
change based on the trigger settings.
Source Selection
Click or tap Source drop-down button to select CH1-CH4. For details, refer to
Trigger
Source
. The selected trigger source is indicated in the trigger information label at the
top of the screen.
Triggering the Oscilloscope
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Only when you select the channel that has signal inputs as the trigger source, can you
obtain a stable trigger.
Edge Type
Select the input signal edge (in the Slope item) on which the oscilloscope triggers.
• Rising: triggers on the rising edge of the input signal.
• Falling: triggers on the falling edge of the input signal.
Trigger Condition
Sets the trigger condition in the When item.
• When you select "Rising" for the edge type, ">" for trigger condition, the
oscilloscope triggers when the positive slope time of the input signal is greater
than the specified time.
• When you select "Rising" for the edge type, "<" for trigger condition, the
oscilloscope triggers when the positive slope time of the input signal is smaller
than the specified time.
• When you select "Rising" for the edge type, "< >" for trigger condition, the
oscilloscope triggers when the positive slope time of the input signal is greater
than the specified lower limit time and smaller than the specified upper limit
time.
• When you select "Falling" for the edge type, ">" for trigger condition, the
oscilloscope triggers when the negative slope time of the input signal is greater
than the specified time.
• When you select "Falling" for the edge type, "<" for trigger condition, the
oscilloscope triggers when the negative slope time of the input signal is smaller
than the specified time.
• When you select "Falling" for the edge type, "< >" for trigger condition, the
oscilloscope triggers when the negative slope time of the input signal is greater
than the specified lower limit time and smaller than the specified upper limit
time.
Slope Time Setting
• In the When item, when ">" or "<" is set to trigger conditions, click or tap the
input field of Lower or Upper to set the lower limit value or the upper limit value
with the pop-up numeric keypad. You can also use the corresponding knob to
set the value. The slope time available is from 1 ns to 10 s.
• In the When item, when "< >" is set to trigger conditions, click or tap the input
field of Upper and Lower respectively to set the upper limit value and the lower
limit value with the pop-up numeric keypad. You can also use the corresponding
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knob to set the values. The lower slope time limit must be smaller than the
upper slope time limit.
Trigger Mode
In Sweep, select Auto, Normal, or Single as the trigger mode. For details, refer to
descriptions in
Trigger Mode
.
Trigger Parameter Setting
You can refer to
Trigger Holdoff
and
Noise Rejection
to set the trigger holdoff and
noise rejection under this trigger type.
Level Selection and Setting
After the trigger condition setting is completed, you need to adjust the trigger level
to correctly trigger the signal and obtain a stable waveform.
Click or tap the Level A/Level B input field to set the level A/level B with the pop-up
numeric keypad. You can also use the trigger level knob or use the corresponding
multipurpose knob to adjust level A/level B. When Linkage is ticked, the upper limit
and lower limit values change at the same time. The difference between upper and
lower limit remains unchanged. For details, refer to descriptions in
Trigger Level
. The
current trigger level is displayed in the trigger information label at the top of the
screen.
TIP
Press the trigger level knob to switch between three modes: "only adjust Level A", "only adjust
Level B", and "adjust Level A and Level B at the same time".
8.7.4 Video Trigger
The video signal can include image information and timing information, which adopts
different standards and formats. This series can trigger on the standard video signal
field or line of NTSC (National Television Standards Committee), PAL (Phase
Alternating Line), or SECAM (Sequential Couleur A Memoire).
Trigger Type
Click or tap the Type drop-down button to select "Video".
Triggering the Oscilloscope
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Figure 8.8 Video Trigger Setting Menu
After a trigger type is selected, the current trigger setting information (including
trigger type, trigger source, and trigger level) is displayed in the trigger information
label at the top of the screen, as shown in the figure below. The information will
change based on the trigger settings.
Source Selection
Click or tap Source drop-down button to select CH1-CH4. For details, refer to
Trigger
Source
. The selected trigger source is indicated in the trigger information label at the
top of the screen.
Only when you select the channel that has signal inputs as the trigger source, can you
obtain a stable trigger.
Video Polarity
In the Polarity item, select the desired polarity: positive polarity ( ) or negative
polarity ( ).
Video Standard
Click or tap the drop-down button of Standard to select the desired video standard.
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Table 8.1 Video Standard
Video Standard
Frame Frequency
(Frame)
Scan Type TV Scan Line
NTSC 30 Interlaced Scan 525
PAL/SECAM 25 Interlaced Scan 625
480p/60Hz 60 Progressive Scan 525
576p/50Hz 50 Progressive Scan 625
720p/60Hz 60 Progressive Scan 750
720p/50Hz 50 Progressive Scan 750
720p/30Hz 30 Progressive Scan 750
720p/25Hz 25 Progressive Scan 750
720p/24Hz 24 Progressive Scan 750
1080p/60Hz 60 Progressive Scan 1125
1080p/50Hz 50 Progressive Scan 1125
1080p/30Hz 30 Progressive Scan 1125
1080p/25Hz 25 Progressive Scan 1125
1080p/24Hz 24 Progressive Scan 1125
1080i/60Hz 60 Interlaced Scan 1125
1080i/50Hz 50 Interlaced Scan 1125
Sync
In the Sync item, select the desired sync type.
• All Lines: triggers on the first line found.
• Line: triggers on the specified line.
When this sync type is selected, you can specify a line number. Click or tap the
input field of Line to set the line number by using the pop-up numeric keypad.
You can also use the corresponding multipurpose knob to set the value. The
range of the line number is related to the currently selected video standards. The
range is from 1 to 525 (NTSC), 1 to 625 (PAL/SECAM), 1 to 525 (480p), 1 to 625
(576p), 1 to 750 (720p), or 1 to 1125 (1080p/1080i).
• Odd: triggers on the rising edge of the first ramp pulse in the odd field. It is only
available when the video standard is set to "NTSC" or "PAL/SECAM".
• Even: triggers on the rising edge of the first ramp pulse in the even field. It is
only available when the video standard is set to "NTSC" or "PAL/SECAM".
Trigger Mode
In Sweep, select Auto, Normal, or Single as the trigger mode. For details, refer to
descriptions in
Trigger Mode
.
Triggering the Oscilloscope
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Trigger Parameter Setting
You can refer to
Noise Rejection
to set the noise rejection under this trigger type.
Trigger Level
Click or tap the Level input field to set the trigger level with the pop-up numeric
keypad. You can also use the front-panel trigger level knob or the corresponding
multipurpose knob to set the trigger level. For details, refer to descriptions in
Trigger
Level
. The current trigger level is displayed in the trigger information label at the top
of the screen.
TIP
• To better observe the waveform details in the video signal, you can set a larger memory
depth first.
• In the trigger debugging process of video signals, the frequency in different part of the
signal can be reflected by a different brightness, as RIGOL's digital oscilloscope provides
the intensity graded color display function. Experienced users can quickly judge the
signal quality and discover abnormalities during the debugging process.
8.7.5 Pattern Trigger
The pattern trigger identifies a trigger condition by looking for a specified pattern.
This pattern is a logical "AND" combination of channels. Each channel can be set to H
(high), L (low), or X (don't care). A rising or falling edge (you can only specify a single
edge) can be specified for one channel included in the pattern. When an edge is
specified, the oscilloscope will trigger at the edge specified if the pattern set for the
other channels are true (namely the actual pattern of the channel is the same as the
preset pattern). If no edge is specified, the oscilloscope will trigger on the last edge
that makes the pattern true. If all the channels in the pattern are set to "X", the
oscilloscope will not trigger.
Figure 8.9 Pattern Trigger
Trigger Type
Click or tap the Type drop-down button to select "Pattern".
Triggering the Oscilloscope
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Figure 8.10 Pattern Trigger Setting Menu
After a trigger type is selected, the current trigger setting information (including
trigger type, trigger source, and trigger level) is displayed in the trigger information
label at the top of the screen, as shown in the figure below. The information will
change based on the trigger settings.
Source Selection
Click or tap Source drop-down button to select CH1-CH4. For details, refer to
Trigger
Source
. The selected trigger source is indicated in the trigger information label at the
top of the screen.
Only when you select the channel that has signal inputs as the trigger source, can you
obtain a stable trigger.
Pattern Setting
The following five patterns are available:
• 1: sets the pattern of the channel selected to "1", i.e. the voltage level is higher
than the trigger level of the channel.
• 0: sets the pattern of the channel selected to "0", i.e. the voltage level is lower
than the trigger level of the channel.
• X: sets the pattern of the channel selected to "X", i.e. this channel is not used as a
part of the pattern. When all channels in the pattern are set to "X", the
oscilloscope will not trigger.
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• : sets the pattern to the rising edge of the channel selected.
• : sets the pattern to the falling edge of the channel selected.
The Left/Right arrow key indicates moving left/right to switch the channel pattern.
"All" indicates all bits. Select a pattern for a channel and then click or tap All. The
patterns of all the other channels will be set to the currently selected pattern. The
pattern setting is as shown in the figure below.
Only one edge (rising or falling edge) can be specified in the pattern. If one edge item
is currently defined and then another edge item is defined in another channel in the
pattern, then a prompt message "Invalid input" is displayed.
Trigger Mode
In Sweep, select Auto, Normal, or Single as the trigger mode. For details, refer to
descriptions in
Trigger Mode
.
Trigger Parameter Setting
You can refer to
Trigger Holdoff
and
Noise Rejection
to set the trigger holdoff and
noise rejection under this trigger type.
Trigger Level
Click or tap the Level input field to set the trigger level with the pop-up numeric
keypad. You can also use the front-panel trigger level knob or the corresponding
multipurpose knob to set the trigger level. For details, refer to descriptions in
Trigger
Level
. The current trigger level is displayed in the trigger information label at the top
of the screen.
8.7.6 Duration Trigger
In duration trigger, the oscilloscope identifies a trigger condition by searching for the
duration of a specified pattern. This pattern is a logical "AND" combination of the
channels. Each channel can be set to 1 (high), 0 (low), or X (don't care). The
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instrument triggers when the duration (∆T) of this pattern meets the preset time, as
shown in the figure below.
CH1
CH2
CH3
CH4
∆T ∆T
Pattern:HLHL
Figure 8.11 Duration Trigger
Trigger Type
Click or tap the Type drop-down button to select "Duration".
Figure 8.12 Duration Trigger Setting Menu
After a trigger type is selected, the current trigger setting information (including
trigger type, trigger source, and trigger level) is displayed in the trigger information
Triggering the Oscilloscope
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label at the top of the screen, as shown in the figure below. The information will
change based on the trigger settings.
Source Selection
Click or tap Source drop-down button to select CH1-CH4. For details, refer to
Trigger
Source
. The selected trigger source is indicated in the trigger information label at the
top of the screen.
Only when you select the channel that has signal inputs as the trigger source, can you
obtain a stable trigger.
Pattern Setting
The following three patterns are available:
• 1: sets the pattern of the channel selected to "1", i.e. the voltage level is higher
than the trigger level of the channel.
• 0: sets the pattern of the channel selected to "0", i.e. the voltage level is lower
than the trigger level of the channel.
• X: sets the pattern of the channel selected to "X", i.e. this channel is not used as a
part of the pattern. When all channels in the pattern are set to "X", the
oscilloscope will not trigger.
The Left/Right arrow key indicates moving left/right to switch the channel pattern.
"All" indicates all bits. Select a pattern for a channel, then click or tap All. The patterns
of all the other channels will be set to the currently selected pattern.
Trigger Condition
Set the trigger condition in the When item.
• >: triggers when the duration of the pattern is greater the preset time. Click or
tap the input field of Lower to set the lower limit of the duration of the pattern
with the pop-up numeric keypad. You can also use the corresponding
multipurpose knob to set the value. The available range is from 1 ns to 10 s.
• <: triggers when the duration of the pattern is smaller than the preset time. Click
or tap the input field of
Upper to set the upper limit of the duration of the
pattern. You can also use the corresponding multipurpose knob to set the value.
The available range is from 1 ns to 10 s.
• < >: triggers when the duration of the pattern is smaller than the upper limit of
the preset time and greater than the lower limit of the preset time. Click or tap
the input field of Upper to set the upper limit of the duration of the pattern, and
the range is from 1.01 ns to 10 s. Click or tap the input field of Lower to set the
lower limit of the duration of the pattern, and the range is from 1 ns to 9.9 s. You
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can also use the corresponding multipurpose knob to set the upper/lower limit.
The lower time limit must be smaller than the upper time limit.
• > <: triggers when the duration of the pattern is greater than the upper limit of
the preset time or smaller than the lower limit of the preset time. Click or tap the
input field of Upper to set the upper limit of the duration of the pattern, and the
range is from 1.01 ns to 10 s. Click or tap the input field of Lower to set the
lower limit of the duration of the pattern, and the range is from 1 ns to 9.9 s. You
can also use the corresponding multipurpose knob to set the upper and lower
limit. The lower time limit must be smaller than the upper time limit.
Trigger Mode
In Sweep, select Auto, Normal, or Single as the trigger mode. For details, refer to
descriptions in
Trigger Mode
.
Trigger Parameter Setting
You can refer to
Trigger Holdoff
and
Noise Rejection
to set the trigger holdoff and
noise rejection under this trigger type.
Trigger Level
Click or tap the Level input field to set the trigger level with the pop-up numeric
keypad. You can also use the front-panel trigger level knob or the corresponding
multipurpose knob to set the trigger level. For details, refer to descriptions in
Trigger
Level
. The current trigger level is displayed in the trigger information label at the top
of the screen.
8.7.7 Timeout Trigger
In Timeout trigger, the oscilloscope triggers when the time interval (∆T) (the time
from when the rising edge (or falling edge) of the input signal passes through the
trigger level to the time from when the neighboring falling edge (or rising edge)
passes through the trigger level) is greater than the preset timeout value, as shown in
Figure 8.13
.
Time Out
T
Time Out
<
T
Figure 8.13 Timeout Trigger
Triggering the Oscilloscope
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Trigger Type
Click or tap the drop-down button of Type to select "Timeout".
Figure 8.14 Timeout Trigger Menu
After a trigger type is selected, the current trigger setting information (including
trigger type, trigger source, and trigger level) is displayed in the trigger information
label at the top of the screen, as shown in the figure below. The information will
change based on the trigger settings.
Source Selection
Click or tap Source drop-down button to select CH1-CH4. For details, refer to
Trigger
Source
. The selected trigger source is indicated in the trigger information label at the
top of the screen.
Only when you select the channel that has signal inputs as the trigger source, can you
obtain a stable trigger.
Edge Type
In Slope item, select the edge type from which the input signal passes through the
trigger level.
• Rising: starts timing when the rising edge of the input signal passes through the
trigger level.
• Falling: starts timing when the falling edge of the input signal passes through
the trigger level.
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• Either: starts timing when either edge of the input signal passes through the
trigger level.
Timeout Value
Timeout value represents the maximum time that the signal remains idle before the
signal passes through the trigger level. Click or tap the input field of Timeout, and
then use the pop-up numeric keypad to set the timeout value of Timeout trigger. You
can also use the corresponding multipurpose knob to set the value.
Trigger Mode
In Sweep, select Auto, Normal, or Single as the trigger mode. For details, refer to
descriptions in
Trigger Mode
.
Trigger Parameter Setting
You can refer to
Noise Rejection
to set the noise rejection under this trigger type.
Trigger Level
Click or tap the Level input field to set the trigger level with the pop-up numeric
keypad. You can also use the front-panel trigger level knob or the corresponding
multipurpose knob to set the trigger level. For details, refer to descriptions in
Trigger
Level
. The current trigger level is displayed in the trigger information label at the top
of the screen.
8.7.8 Runt Trigger
The runt trigger sets the oscilloscope to trigger pulses that cross one trigger level but
not another, as shown in the figure below.
Lower Limit of the
Trigger Level
Upper Limit of the
Trigger Level
Negative Runt Pulse
Positive Runt Pulse
Figure 8.15 Runt Trigger
Trigger Type
Click or tap the drop-down button of Type to select "Runt".
Triggering the Oscilloscope
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Figure 8.16 Runt Trigger Setting Menu
After a trigger type is selected, the current trigger setting information (including
trigger type, trigger source, and trigger level) is displayed in the trigger information
label at the top of the screen, as shown in the figure below. The information will
change based on the trigger settings.
Source Selection
Click or tap Source drop-down button to select CH1-CH4. For details, refer to
Trigger
Source
. The selected trigger source is indicated in the trigger information label at the
top of the screen.
Only when you select the channel that has signal inputs as the trigger source, can you
obtain a stable trigger.
Polarity
Select the pulse polarity of Runt trigger under the Polarity item.
• Positive : indicates that the instrument triggers on the positive runt pulse.
• Negative : triggers on the negative runt pulse.
Trigger Condition
Set the Runt trigger condition in the When item.
• None: indicates not setting the trigger condition of Runt trigger.
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• >: triggers when the runt pulse width is greater the Lower limit of pulse width.
Click or tap the input field of Lower to set the minimum pulse width of Runt
trigger with the pop-up numeric keypad. You can also use the corresponding
multipurpose knob to modify the value.
• <: triggers when the runt pulse width is smaller than the upper limit of pulse
width. Click or tap the input field of Upper to set the maximum pulse width of
Runt trigger with the pop-up numeric keypad. You can also use the
corresponding multipurpose knob to modify the value.
• < >: triggers when the runt pulse width is greater than the lower limit and
smaller than the upper limit of pulse width. Click or tap the input field of Upper
to set the maximum pulse width of Runt trigger with the pop-up numeric
keypad. Click or tap the input field of Lower to set the minimum pulse width of
Runt trigger with the pop-up numeric keypad. You can also use the
corresponding multipurpose knob to modify the maximum and minimum pulse
width. The lower limit of the pulse width must be smaller than the upper limit.
Trigger Mode
In Sweep, select Auto, Normal, or Single as the trigger mode. For details, refer to
descriptions in
Trigger Mode
.
Trigger Parameter Setting
You can refer to
Trigger Holdoff
and
Noise Rejection
to set the trigger holdoff and
noise rejection under this trigger type.
Level Selection and Setting
After the trigger condition setting is completed, you need to adjust the trigger level
to correctly trigger the signal and obtain a stable waveform.
Click or tap the Level A/Level B input field to set the level A/level B with the pop-up
numeric keypad. You can also use the trigger level knob or use the corresponding
multipurpose knob to adjust level A/level B. When Linkage is ticked, the upper limit
and lower limit values change at the same time. The difference between upper and
lower limit remains unchanged. For details, refer to descriptions in
Trigger Level
. The
current trigger level is displayed in the trigger information label at the top of the
screen.
TIP
Press the trigger level knob to switch between three modes: "only adjust Level A", "only adjust
Level B", and "adjust Level A and Level B at the same time".
Triggering the Oscilloscope
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8.7.9 Window Trigger
Window trigger provides a high trigger level and a low trigger level. The instrument
triggers when the input signal passes through the high trigger level or the low trigger
level.
Trigger Type
Click or tap the drop-down button of Type to select "Over".
Figure 8.17 Window Trigger Setting Menu
After a trigger type is selected, the current trigger setting information (including
trigger type, trigger source, and trigger level) is displayed in the trigger information
label at the top of the screen, as shown in the figure below. The information will
change based on the trigger settings.
Source Selection
Click or tap the drop-down button of Source to select CH1-CH4. For details, refer to
descriptions in "
Trigger Source
". The selected trigger source is indicated in the trigger
information label at the top of the screen.
Only when you select the channel that has signal inputs as the trigger source, can you
obtain a stable trigger.
Edge Type
Select the input signal edge (in the
Slope item) on which the oscilloscope triggers.
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• Rising: triggers on the rising edge of the input signal when Trigger Position
condition is met.
• Falling: triggers on the falling edge of the input signal when Trigger Position
condition is met.
• Either: triggers on the rising or falling edge of the input signal when Trigger
Position condition is met.
Trigger Position
After selecting the window type, specify the time point of trigger by selecting the
trigger position (in Position item).
• Enter: triggers when the input signal enters the specified trigger level range.
• Exit: triggers when the input signal exits the specified trigger level range.
• Time: triggers when the accumulated hold time since the input signal entered
the specified trigger level range is equal to the window time. After you select
this type, click or tap the input field of Time to set it by using the pop-up
numeric keypad. The available range is from 1 ns to 10 s.
Trigger Mode
In Sweep, select Auto, Normal, or Single as the trigger mode. For details, refer to
descriptions in
Trigger Mode
.
Trigger Parameter Setting
You can refer to
Trigger Holdoff
and
Noise Rejection
to set the trigger holdoff and
noise rejection under this trigger type.
Level Selection and Setting
After the trigger condition setting is completed, you need to adjust the trigger level
to correctly trigger the signal and obtain a stable waveform.
Click or tap the Level A/Level B input field to set the level A/level B with the pop-up
numeric keypad. You can also use the trigger level knob or use the corresponding
multipurpose knob to adjust level A/level B. When Linkage is ticked, the upper limit
and lower limit values change at the same time. The difference between upper and
lower limit remains unchanged. For details, refer to descriptions in
Trigger Level
. The
current trigger level is displayed in the trigger information label at the top of the
screen.
TIP
Press the trigger level knob to switch between three modes: "only adjust Level A", "only adjust
Level B", and "adjust Level A and Level B at the same time".
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8.7.10 Delay Trigger
In Delay trigger, you need to set Source A and Source B. The oscilloscope triggers
when the time difference (∆T) between the specified edges (Edge A and Edge B) of
Source A and Source B meets the preset time limit, as shown in the figure below.
Edge A and Edge B must be two neighboring edges.
T
Source A
Source B
Edge A
Edge B
Figure 8.18 Delay Trigger
Trigger Type
Click or tap the drop-down button of
Type to select "Delay".
Figure 8.19 Delay Trigger Setting Menu
After a trigger type is selected, the current trigger setting information (including
trigger type, trigger source, and trigger level) is displayed in the trigger information
label at the top of the screen, as shown in the figure below. The information will
change based on the trigger settings.
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Source Setting
• Source A
Click or tap the drop-down button of SourceA to select CH1-CH4. For details,
refer to descriptions in "
Trigger Source
". The selected trigger source is indicated
in the trigger information label at the top of the screen.
Only when you select the channel that has signal inputs as the trigger source,
can you obtain a stable trigger.
• Edge A
Select the trigger edge type ("Rising" or "Falling") of Source A in Delay trigger in
the EdgeA item.
• Source B
Click or tap the drop-down button of SourceB to select CH1-CH4. For details,
refer to descriptions in "
Trigger Source
". The selected trigger source is indicated
in the trigger information label at the top of the screen.
Only when you select the channel that has signal inputs as the trigger source,
can you obtain a stable trigger.
• Edge B
Select the trigger edge type ("Rising" or "Falling") of Source B in Delay trigger in
the EdgeB item.
Set the Trigger Condition
Set the time limit condition of Delay trigger in the Slope.
• >: triggers when the time difference (∆T) between the specified edges of Source
A and Source B is greater than the preset time lower limit. Click or tap the input
field of Lower to set the delay time lower limit in Delay trigger with the pop-up
numeric keypad. You can also use the corresponding multipurpose knob to set
the value.
• <: triggers when the time difference (∆T) between the specified edges of Source
A and Source B is smaller than the preset time upper limit. Click or tap the input
field of
Upper to set the delay time upper limit in Delay trigger with the pop-up
numeric keypad. You can also use the corresponding multipurpose knob to set
the value.
• < >: triggers when the time difference (∆T) between the specified edges of
Source A and Source B is greater than the lower limit of the preset time and
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smaller than the upper limit of the preset time. Click or tap the input field of
Upper to set the delay time upper limit in Delay trigger with the pop-up numeric
keypad. Click or tap the input field of Lower to set the delay time lower limit in
Delay trigger with the pop-up numeric keypad. You can also use the
corresponding multipurpose knob to set the upper and lower limit. The lower
time limit must be smaller than the upper time limit.
• > <: triggers when the time difference (∆T) between the specified edges of
Source A and Source B is smaller than the lower limit of the preset time or
greater than the upper limit of the preset time. Click or tap the input field of
Upper to set the delay time upper limit in Delay trigger with the pop-up numeric
keypad. Click or tap the input field of Lower to set the delay time lower limit in
Delay trigger with the pop-up numeric keypad. You can also use the
corresponding multipurpose knob to set the upper and lower limit. The lower
time limit must be smaller than the upper time limit.
Trigger Mode
In Sweep, select Auto, Normal, or Single as the trigger mode. For details, refer to
descriptions in
Trigger Mode
.
Trigger Parameter Setting
You can refer to
Trigger Holdoff
and
Noise Rejection
to set the trigger holdoff and
noise rejection under this trigger type.
Level Selection and Setting
After the trigger condition setting is completed, you need to adjust the trigger level
to correctly trigger the signal and obtain a stable waveform.
Click or tap the Level A/Level B input field to set the level A/level B with the pop-up
numeric keypad. You can also use the corresponding multipurpose knob to adjust
level A/level B or use the trigger level knob to adjust the level (the focus of the trigger
level knob is the last modified level). For details, refer to descriptions in
Trigger Level
.
The current trigger level is displayed in the trigger information label at the top of the
screen.
8.7.11 Setup/Hold Trigger
In setup&hold trigger, you need to set the clock source and data source. The setup
time starts when the data signal passes the trigger level and ends at the coming of
the specified clock edge; the hold time starts at the coming of the specified clock
edge and ends when the data signal crosses the trigger level again, as shown in the
figure below. The oscilloscope triggers when the setup time or hold time is smaller
than the preset time.
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T1
T2
Data Source
Clock Source
T2 is the hold time
T1 is the setup time
Edage
The data type is H
Figure 8.20 Setup/Hold Trigger
Trigger Type
Click or tap the drop-down button of Type to select "Setup/Hold".
Figure 8.21 Setup/Hold Trigger Setting Menu
After a trigger type is selected, the current trigger setting information (including
trigger type, trigger source, and trigger level) is displayed in the trigger information
label at the top of the screen, as shown in the figure below. The information will
change based on the trigger settings.
Triggering the Oscilloscope
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Clock Source
Click or tap the drop-down button of SCL to select CH1-CH4. For details, refer to
descriptions in
Trigger Source
. The current trigger source is displayed in the trigger
information label at the top of the screen.
Only when you select the channel that has signal inputs as the trigger source, can you
obtain a stable trigger.
Edge Type
Select the desired clock edge type in the Slope item, and it can be set to "Rising" or
"Falling".
Data Source
Click or tap the drop-down button of SDA to select CH1-CH4. For details, refer to
descriptions in
Trigger Source
. The current trigger source is displayed in the trigger
information label at the top of the screen.
Only when you select the channel that has signal inputs as the trigger source, can you
obtain a stable trigger.
Data Type
Select the effective pattern of the data signal in the Data Type item. It can be set to H
(high level) or L (low level).
Trigger Condition
Set the Setup/Hold trigger condition in the When item.
• Setup: the oscilloscope triggers when the setup time is smaller than the
specified setup time. After selecting this type, click or tap the input field of
Setup to set the setup time with the pop-up numeric keypad. You can also use
the corresponding multipurpose knob to set the value.
• Hold: the oscilloscope triggers when the hold time is smaller than the specified
hold time. After selecting this type, click or tap the input field of Hold to set the
hold time with the pop-up numeric keypad. You can also use the corresponding
multipurpose knob to set the value.
• Setup/Hold: the oscilloscope triggers when the setup time or hold time smaller
than the specified time value. After selecting this type, click or tap the input field
of Setup and Hold respectively to set the setup and hold time with the pop-up
numeric keypad. You can also use the corresponding multipurpose knob to set
the values.
Trigger Mode
In
Sweep, select Auto, Normal, or Single as the trigger mode. For details, refer to
descriptions in
Trigger Mode
.
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Trigger Parameter Setting
You can refer to
Trigger Holdoff
and
Noise Rejection
to set the trigger holdoff and
noise rejection under this trigger type.
Level Selection and Setting
After the trigger condition setting is completed, you need to adjust the trigger level
to correctly trigger the signal and obtain a stable waveform.
Click or tap the Level A/Level B input field to set the level A/level B with the pop-up
numeric keypad. You can also use the corresponding multipurpose knob to adjust
level A/level B or use the trigger level knob to adjust the level (the focus of the trigger
level knob is the last modified level). For details, refer to descriptions in
Trigger Level
.
The current trigger level is displayed in the trigger information label at the top of the
screen.
8.7.12 Nth Edge Trigger
The Nth edge trigger lets you to trigger on the Nth edge that occurs after a specified
idle time. For example, in the waveform as shown in the figure below, the instrument
should trigger on the second rising edge after the specified idle time (the time
between two neighboring rising edges), and the idle time should be within the range
between P and M (P< Idle Time<M). Wherein, M is the time between the first rising
edge and its previous rising edge; P is the maximum time between the rising edges
that participate in counting.
P
M
Edge Type=
Edge Num=2
P<Idle Time<M
Figure 8.22 Nth Edge Trigger
Trigger Type
Click or tap the drop-down button of Type to select "Nth Edge".
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Figure 8.23 Nth Edge Trigger Setting Menu
After a trigger type is selected, the current trigger setting information (including
trigger type, trigger source, and trigger level) is displayed in the trigger information
label at the top of the screen, as shown in the figure below. The information will
change based on the trigger settings.
Source Selection
Click or tap the drop-down button of Source to select CH1-CH4. For details, refer to
descriptions in
Trigger Source
. The current trigger source is displayed in the trigger
information label at the top of the screen.
Only when you select the channel that has signal inputs as the trigger source, can you
obtain a stable trigger.
Edge Type
Select the input signal edge (in the Slope item) on which the oscilloscope triggers.
• Rising: triggers on the rising edge of the input signal when the voltage level
meets the specified trigger level.
• Falling: triggers on the falling edge of the input signal when the voltage level
meets the specified trigger level.
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Idle Time
Click or tap the input field of Idle Time, and then use the pop-up numeric keypad to
set the idle time before the edge counting in Nth edge trigger. You can also use the
corresponding multipurpose knob to set the value.
Edge Count
Click or tap the input field of Edges, then use the pop-up numeric keypad to set the
value of "N" in Nth edge trigger. You can also use the corresponding multipurpose
knob to set the value. The available range is from 1 to 65,535.
Trigger Mode
In Sweep, select Auto, Normal, or Single as the trigger mode. For details, refer to
descriptions in
Trigger Mode
.
Trigger Parameter Setting
You can refer to
Noise Rejection
to set the noise rejection under this trigger type.
Trigger Level
Click or tap the Level input field to set the trigger level with the pop-up numeric
keypad. You can also use the front-panel trigger level knob or the corresponding
multipurpose knob to set the trigger level. For details, refer to descriptions in
Trigger
Level
. The current trigger level is displayed in the trigger information label at the top
of the screen.
8.7.13 RS232 Trigger
RS232 bus is a serial communication mode used in data transmission between PCs or
between a PC and a terminal. In RS232 serial protocol, a character is transmitted as a
frame of data. The frame consists of 1 start bit, 5-8 data bits, 1 check bit, and 1-2 stop
bits. Its format is as shown in the figure below. This series oscilloscope triggers when
detecting the start frame, error frame, check error, or the specified data of the RS232
signal.
Stop BitCheck BitData BitStart Bit
1 bit 5~8 bits 1 bit 1~2 bits
Figure 8.24 Schematic Diagram of RS232 Protocol
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Trigger Type
Click or tap the drop-down button of Type to select "RS232".
Figure 8.25 RS232 Trigger Setting Menu
After a trigger type is selected, the current trigger setting information (including
trigger type, trigger source, and trigger level) is displayed in the trigger information
label at the top of the screen, as shown in the figure below. The information will
change based on the trigger settings.
Source Selection
Click or tap the drop-down button of Source to select CH1-CH4. For details, refer to
descriptions in
Trigger Source
. The selected trigger source is indicated in the trigger
information label at the top of the screen.
Only when you select the channel that has signal inputs as the trigger source, can you
obtain a stable trigger.
Polarity
Select the polarity of data transmission in the Polarity item. It can be set to "Positive"
or "Negative" .
Trigger Condition
Set the desired trigger condition in the
When item.
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• Start: triggers on the start frame position.
• Error: triggers when an error frame is detected.
• Check Error: triggers when a check error is detected.
• Data: triggers on the last bit of the preset data bits. Click or tap the input field of
Data, and then use the pop-up numeric keypad to set the data of RS232 trigger.
You can also use the corresponding multipurpose knob to set the value.
Baud Rate
You can select the baud rate of data transmission (i.e. specifies a clock frequency).
Click or tap the drop-down button of Baud Rate, then select the preset baud rate.
The available baud rates include 50 bps, 75 bps, 110 bps, 134 bps, 150 bps, 300 bps,
and etc. You can also self-define the baud rate.
Data Bits
Indicate the number of bits per frame. Click or tap the drop-down button of Data Bits
to select the desired data bits. The available data bits include "5 Bits", "6 Bits", "7 Bits",
and "8 Bits".
Stop Bit
Indicates when to stop outputting data. Select the desired stop bit in the Stop Bit
item. The available data bits include 1 Bit, 1.5 Bits, and 2 Bits.
Parity
Used to check whether the data are properly transmitted. Select None, Even, or Odd
in the Parity item.
• None: indicates that no check bit appears during the transmission.
• Even: indicates that the total number of "1" in the data bit and check bit is an
even number. For example, when 0x55 (01010101) is sent, "0" should be added
to the check bit.
• Odd: indicates that the total number of "1" in the data bit and check bit is an
odd number. For example, when 0x55 (01010101) is sent, "1" should be added to
the check bit.
Trigger Mode
In Sweep, select Auto, Normal, or Single as the trigger mode. For details, refer to
descriptions in
Trigger Mode
.
Trigger Parameter Setting
You can refer to
Noise Rejection
to set the noise rejection under this trigger type.
Triggering the Oscilloscope
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Trigger Level
Click or tap the Level input field to set the trigger level with the pop-up numeric
keypad. You can also use the front-panel trigger level knob or the corresponding
multipurpose knob to set the trigger level. For details, refer to descriptions in
Trigger
Level
. The current trigger level is displayed in the trigger information label at the top
of the screen.
8.7.14 I2C Trigger
I2C is a 2-wire serial bus used to connect the microcontroller and its peripheral
device. It is a bus standard widely used in the microelectronic communication control
field.
The I2C serial bus consists of SCL and SDA. Its transmission rate is determined by SCL,
and its transmission data is determined by SDA, as shown in the figure below. The
instrument triggers on the start condition, restart, stop, missing acknowledgment,
specific device address, or data value. Besides, it can also trigger on the specific
device address and data values at the same time.
Figure 8.26 Sequence Diagram of I2C Protocol
Trigger Type
Click or tap the drop-down button of Type to select "I2C".
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Figure 8.27 I2C Trigger Setting Menu
After a trigger type is selected, the current trigger setting information (including
trigger type, trigger source, and trigger level) is displayed in the trigger information
label at the top of the screen, as shown in the figure below. The information will
change based on the trigger settings.
Source Selection
Click or tap the drop-down buttons of SCL and SDA to select CH1-CH4 to specify the
sources of SCL and SDA respectively. For details, refer to descriptions in
Trigger
Source
The selected trigger source is indicated in the trigger information label at the
top of the screen.
Only when you select the channel that has signal inputs as the trigger source, can you
obtain a stable trigger.
Trigger Condition
Set the desired trigger condition in the When item.
• Start: triggers when SDA data transitions from high level to low level while SCL
is high level.
• Stop: triggers when SDA data transitions from low level to high level while SCL is
high level.
• Restart: triggers when another start condition occurs before a stop condition.
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• MissedAck: triggers when ACK is 1.
• Address: the trigger searches for the specified address value. When this event
occurs, the oscilloscope will trigger on the read/write bit. After this trigger
condition is selected:
- Click or tap the drop-down button of Direction to select "Write", "Read", or
"R/W".
This setting is not available when AddrBits is set to "8 Bits".
- Click or tap the drop-down button of AddrBits to select the desired
address bits. The available address bits are "7 Bits", "8 Bits", and "10 Bits".
- Click or tap the input field of Address, and then use the pop-up numeric
keypad to set the address of I2C trigger. You can also use the corresponding
multipurpose knob to set the value.
• Data: the trigger searches for the specified data value on the data line (SDA).
When this event occurs, the oscilloscope will trigger on the clock line (SCL)
transition edge of the last bit of data After this trigger condition is selected, you
can set the following parameters.
- Click or tap the drop-down button of AddrBits to select the desired
address bits. The available address bits are "7 Bits", "8 Bits", and "10 Bits".
- Click or tap the input field of Bytes, and then use the pop-up numeric
keypad to set the length of the data. You can also use the corresponding
multipurpose knob to set the value. Its range is from 1 to 5.
- Click or tap the input field of Data, and then the "Format" interface is will
displayed. You can select "Bin" or "Hex" data format.
Figure 8.28 Binary Format Setting
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Figure 8.29 Hexadecimal Format Setting
• A&D: the oscilloscope searches for the specified address and data at the same
time, then triggers when both the address and data meet the conditions. After
this condition is selected, you need to set the sub Data-menu items such as
Direction, Bytes, AddrBits, Address, and Data. For the setting methods, refer to
descriptions in "Address" and "Data" conditions.
Trigger Mode
In Sweep, select Auto, Normal, or Single as the trigger mode. For details, refer to
descriptions in
Trigger Mode
.
Trigger Parameter Setting
You can refer to
Noise Rejection
to set the noise rejection under this trigger type.
Level Selection and Setting
After the trigger condition setting is completed, you need to adjust the trigger level
to correctly trigger the signal and obtain a stable waveform.
• Level A
Click or tap the input field of
Level A to input the level of SCL with the pop-up
numeric keypad. You can also use the corresponding multipurpose knob or
trigger level knob to set the value. For details, refer to descriptions in
Trigger
Level
. The current trigger level is displayed in the trigger information label at the
top of the screen.
• Level B
Click or tap the input field of
Level B to input the level of SDA with the pop-up
numeric keypad. You can also use the corresponding multipurpose knob to set
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the value. For details, refer to descriptions in
Trigger Level
. The current trigger
level is displayed in the trigger information label at the top of the screen.
8.7.15 SPI Trigger
In SPI trigger, after the CS or timeout condition is satisfied, the oscilloscope triggers
when the specified data is found. When using SPI trigger, you need to specify the CLK
clock sources and MISO data sources.
The figure below shows the sequential chart of SPI bus.
SDA
SCL
CS
D7
D6 D5
D4 D3
D2 D1 D0
Figure 8.30 Sequential Chart of SPI Bus
Trigger Type
Click or tap the drop-down button of Type to select "SPI".
Figure 8.31 SPI Trigger Setting Menu
After a trigger type is selected, the current trigger setting information (including
trigger type, trigger source, and trigger level) is displayed in the trigger information
label at the top of the screen, as shown in the figure below. The information will
change based on the trigger settings.
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Source Selection
Click or tap the drop-down buttons of CLK and MISO to select CH1-CH4 to specify
the sources of CLK and MISO respectively. For details, refer to descriptions in
Trigger
Source
. The current trigger source is displayed in the trigger information label at the
top of the screen.
Only when you select the channel that has signal inputs as the trigger source, can you
obtain a stable trigger.
Edge Type
Select the desired clock edge type in Slope.
• Rising: samples the MISO data on the rising edge of the clock.
• Falling: samples the MISO data on the falling edge of the clock.
Trigger Condition
Select the desired trigger condition in When.
• With CS: if the CS signal is valid, the oscilloscope will trigger when the data
(SDA) satisfying the trigger conditions is found.
- Click or tap the drop-down button of CS to select CH1-CH4 as the CS signal
line.
- After selecting this condition, you can click or tap "Positive" (high level is
valid) or "Negative" (low level is valid) in CS Mode.
• Timeout: the oscilloscope starts to search for the data (MISO) on which to
trigger after the clock signal (CLK) stays in the idle state for a specified period of
time. After selecting this condition, you can click or tap the Timeout input field,
then use the numeric keypad to set the idle time. You can also use the
corresponding multipurpose knob to set the value. The range is from 8 ns to 10
s.
Data
Click or tap the of field of
Data, and then the "Format" interface is displayed. You can
set the data bit that needs to be operated on. For details, refer to descriptions in
I2C
Trigger
.
Data Bits
Click or tap the input field of DataBits, and then use the pop-up numeric keypad to
set the number of bits in the serial data string. You can also use the corresponding
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multipurpose knob to set the value. The number of bits in the string can be set to any
integer ranging from 4 to 32.
Trigger Mode
In Sweep, select Auto, Normal, or Single as the trigger mode. For details, refer to
descriptions in
Trigger Mode
.
Trigger Parameter Setting
You can refer to
Noise Rejection
to set the noise rejection under this trigger type.
Level Selection and Setting
After the trigger condition setting is completed, you need to adjust the trigger level
to correctly trigger the signal and obtain a stable waveform.
• Level A
Click or tap the input field of Level A to input the level of CLK with the pop-up
numeric keypad. You can also use the corresponding multipurpose knob or the
trigger level knob to adjust the level of CLK. For details, refer to descriptions in
Trigger Level
. The current trigger level is displayed in the trigger information
label at the top of the screen.
• Level B
Click or tap the input field of Level B to input the level of MISO with the pop-up
numeric keypad. You can also use the corresponding multipurpose knob to
adjust the level of MISO. For details, refer to descriptions in
Trigger Level
. The
current trigger level is displayed in the trigger information label at the top of the
screen.
• Level C
Click or tap the input field of Level C to input the level of CS with the pop-up
numeric keypad. You can also use the corresponding multipurpose knob to
adjust the level of CS. For details, refer to descriptions in
Trigger Level
. The
current trigger level is displayed in the trigger information label at the top of the
screen.
8.7.16 CAN Trigger
This series oscilloscope can trigger on the start of a frame, end of a frame, frame of
the specified type (e.g. Remote, Overload, Data, etc.), or error frame of the specified
type (e.g. Answer Error, Check Error, Format Error, etc.) of the CAN signal.
The data frame format of the CAN bus is as shown in the figure below.
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Figure 8.32 Data Frame Format of the CAN Bus
Trigger Type
Click or tap the drop-down button of Type to select "CAN".
Figure 8.33 CAN Trigger Setting Menu
After a trigger type is selected, the current trigger setting information (including
trigger type, trigger source, and trigger level) is displayed in the trigger information
label at the top of the screen, as shown in the figure below. The information will
change based on the trigger settings.
Source Selection
Click or tap the drop-down button of Source to select CH1-CH4. For details, refer to
descriptions in
Trigger Source
The selected trigger source is indicated in the trigger
information label at the top of the screen.
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Only when you select the channel that has signal inputs as the trigger source, can you
obtain a stable trigger.
Signal Type
Click or tap the drop-down button of Signal Type to select the desired signal type.
• CAN_H: indicates the actual CAN_H bus signal.
• CAN_L: indicates the actual CAN_L bus signal.
• TX/RX: indicates the Transmit signal and Receive signal from the CAN bus
transceiver.
• DIFF: indicates the CAN differential bus signals connected to an analog channel
by using a differential probe. Connect the probe's positive lead to the CAN_H
bus signal and connect the negative lead to the CAN_L bus signal.
Baud Rate
Click or tap the drop-down button of Baud to select the preset baud rate. The
available baud rates include 10 kbps, 20 kbps, 33.3 kbps, 50 kbps, 62.5 kbps, 83.3
kbps, and etc. You can also self-define the baud rate.
Sample Position
Sample position is a point within a bit's time. The oscilloscope samples the bit level at
this point. The sample position is represented by the proportion of "the time from the
start of the bit to the sample position" to the "bit time", as shown in the figure below.
One Bit
60%
70%
80%
Figure 8.34 Sample Position
Click or tap the input field of
Sample Position to set it by using the pop-up numeric
keypad. You can also use the corresponding multipurpose knob to set the value. The
settable range is from 10% to 90%.
Trigger Condition
Click or tap the drop-down button of When to select the desired trigger condition.
• SOF: triggers at the start of a frame.
• EOF: triggers at the end of a frame.
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• Remote ID: triggers on the specified ID of Remote frame. When you select
Remote ID, you need to set the following parameters.
- Click or tap the Extended ID on/off switch to enable or disable the
extended ID.
- Click or tap the input field of ID, and then the "Format" interface is
displayed. You can set the ID that needs to be operated on. For details, refer
to descriptions in
I2C Trigger
.
• Overload: triggers on the overload frames.
• Frame ID: triggers on the data frames with the specified ID. After you select
Frame ID, you can refer to the "Remote ID" mentioned above to set the
Extended ID and ID.
• Frame Data: triggers on the data frames with the specified Data. When you
select Frame Data, you need to set the following parameters.
- Click or tap the input field of Data, and then the "Format" interface is
displayed. You can set the data bit that needs to be operated on. For
details, refer to descriptions in
I2C Trigger
.
- Click or tap the input field of Bytes, and then use the pop-up numeric
keypad to set the length of the data. You can also use the corresponding
multipurpose knob to set the value. Its range is from 1 to 8.
• Data & ID: triggers on the data frames with the specified ID and data. When you
select Data & ID, you need to set the ID, Extended ID, Data, and Bytes.
• Frame Error: triggers on the error frame.
• Bit Fill: triggers on the error frame with the bit fill.
• Answer Error: triggers on the answer error frame.
• Check Error: triggers on the check error frame.
• Format Error: triggers on the format error frame.
• Random Error: triggers on the random error frame, such as the format error
frame, answer error frame, etc.
Trigger Mode
In Sweep, select Auto, Normal, or Single as the trigger mode. For details, refer to
descriptions in
Trigger Mode
.
Trigger Parameter Setting
You can refer to
Noise Rejection
to set the noise rejection under this trigger type.
Triggering the Oscilloscope
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Trigger Level
Click or tap the Level input field to set the trigger level with the pop-up numeric
keypad. You can also use the front-panel trigger level knob or the corresponding
multipurpose knob to set the trigger level. For details, refer to descriptions in
Trigger
Level
. The current trigger level is displayed in the trigger information label at the top
of the screen.
8.7.17 LIN Trigger
This series can trigger on the sync field of LIN signal, and can also trigger on the
specified identifier, data, or frame.
The data frame format of the LIN bus is as shown in the figure below.
Figure 8.35 Data Frame Format of the LIN Bus
Trigger Type
Click or tap the drop-down button of Type to select "LIN".
Figure 8.36 LIN Trigger Setting Menu
After a trigger type is selected, the current trigger setting information (including
trigger type, trigger source, and trigger level) is displayed in the trigger information
label at the top of the screen, as shown in the figure below. The information will
change based on the trigger settings.
Triggering the Oscilloscope
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Source Selection
Click or tap the drop-down button of Source to select CH1-CH4. For details, refer to
descriptions in
Trigger Source
. The current trigger source is displayed in the trigger
information label at the top of the screen.
Only when you select the channel that has signal inputs as the trigger source, can you
obtain a stable trigger.
Protocol Version
In Version, select the protocol version that matches the signal under test. The
available versions include 1.X, 2.X and Both.
Baud Rate
Click or tap the drop-down button of Baud to select the preset baud rate. The
available baud rates include 1.2 kbps, 2.4 kbps, 4.8 kbps, 9.6 kbps, 19.2 kbps, and etc.
You can also self-define the baud rate.
Sample Position
Sample position is a point within a bit's time. The oscilloscope samples the bit level at
this point. The sample position is represented by the proportion of "the time from the
start of the bit to the sample position" to the "bit time", as shown in the figure below.
Figure 8.37 Sample Position
Click or tap the input field of Sample Position to set it by using the pop-up numeric
keypad. You can also use the corresponding multipurpose knob to set the value. The
settable range is from 10% to 90%.
Triggering the Oscilloscope
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Trigger Condition
Click or tap the drop-down button of When to select the desired trigger condition.
• Sync: triggers on the last bit of the sync field.
• ID: triggers when the frames with the specified ID are found.
Click or tap the input field of ID, and then use the pop-up numeric keypad to set
ID. You can also use the corresponding multipurpose knob to set the value.
• Data: triggers when the data that meet the preset conditions are found.
- Click or tap the input field of Data, and then the "Format" interface is
displayed. You can set the data bit that needs to be operated on. For
details, refer to descriptions in
I2C Trigger
.
- Click or tap the input field of Bytes, and then use the pop-up numeric
keypad to set the length of the data. You can also use the corresponding
multipurpose knob to set the value. Its range is from 1 to 8.
• Data&ID: triggers when the frames with the specified ID and data that meet the
preset conditions are both found.
When Data&ID is selected, you need to set the Data, Bytes, and ID.
• Sleep: triggers when the sleep frame is found.
• Wakeup: triggers when the wakeup frame is found.
• Error: triggers on the specified type of error frame. Click or tap the drop-down
button of Error Type to select the error type: Sync, Even Odd, or Check Sum.
Trigger Mode
In Sweep, select Auto, Normal, or Single as the trigger mode. For details, refer to
descriptions in
Trigger Mode
.
Trigger Parameter Setting
You can refer to
Noise Rejection
to set the noise rejection under this trigger type.
Trigger Level
Click or tap the Level input field to set the trigger level with the pop-up numeric
keypad. You can also use the front-panel trigger level knob or the corresponding
multipurpose knob to set the trigger level. For details, refer to descriptions in
Trigger
Level
. The current trigger level is displayed in the trigger information label at the top
of the screen.
Triggering the Oscilloscope
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8.8 Trigger Output Connector
The rear-panel trigger output connector ([AUX OUT]) of this series can output trigger
signals determined by the current setting (hardware trigger).
Click or tap > Utility. Click or tap Setup, and then select "TrigOut" in Aux Out. A
signal which reflects the current oscilloscope capture rate can be output from [AUX
OUT] connector each time a trigger is generated by the oscilloscope. If this signal is
connected to a waveform display device to measure the frequency, the measurement
result is the same as the current capture rate.
If "PassFail" is selected in Aux Out, the instrument can output a pulse from the [AUX
OUT] connector when a pass/failed event is detected during the pass/fail test.
Triggering the Oscilloscope
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9
Math Operation
This series oscilloscopes can realize multiple math operations between waveforms of
different channels, including arithmetic operation, spectrum operation, logic
operation, function operation, and digital filter. You can access the Horizontal menu
in the following ways.
• Click or tap the function navigation icon at the lower-left corner of the
screen, and then select Math to enter the "Math" menu.
• Click or tap the Math button on the toolbar at the upper-right corner of the
screen to enter the "Math" menu.
• Click or tap the Math1~Math4 label at the bottom of the screen, and the
corresponding math window appears on the screen, as shown in
Figure 9.2
.
Then click or tap the label again, or the
icon at the upper-right corner of the
window to enter the "Math" menu.
• Press the front-panel key to enter the "Math" menu.
Figure 9.1 Math Menu
This oscilloscope provides four math operations: Math1, Math2, Math3, and Math4. In
the Math menu, you can select the desired math operation type by clicking or
Math Operation
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tapping the Math1~Math4 label or by sliding the menu left and right. This manual
takes Math1 as an example to introduce math operation.
In the Math menu, click or tap the Operation on/off switch to show or hide the
waveform display window of the operation results. By default, it is OFF. When "ON" is
selected for Math1~Math4, the figure as shown in
Figure 9.2
is displayed on the
screen.
Figure 9.2 Waveform Display Window of the Operation Results
You can drag the title bar of the display window to change the position of the
window. You can also click or tap at the upper-right corner of the window to close
it.
9.1 Arithmetic Operation
In the Math menu, click or tap the Operator drop-down button to select the desired
math operation. The arithmetic operations supported by this oscilloscope include A
+B, A-B, A×B, and A÷B.
• A+B adds the waveform voltage values of signal source A and B point by point
and displays the results.
• A-B subtracts the waveform voltage values of signal source B from that of source
A point by point and displays the results
• A×B multiplies the waveform voltage values of signal source A and B point by
point and displays the results.
• A÷B divides the waveform voltage values of signal source A by that of source B
point by point and displays the results. It can be used to analyze the Multiple
relation of the two channels waveforms.
Math Operation
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TIP
When the voltage of signal source B is 0 V, the division result is treated as 0.
Figure 9.3 Arithmetic Operation Menu
Operation Result Display Window
Click or tap the Operation on/off switch to enable the display of the arithmetic
operation result window. The source and the vertical scale parameters are displayed
at the top of the window, as shown in the figure below.
Figure 9.4 Operation Result Display Window
Math Operation
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Source
Click or tap the drop-down button of SourceA or SourceB to select CH1-CH4 or
Ref1-Ref10. When a source channel is selected, the selected channel automatically
switches to the ON state.
TIP
Besides CH1-CH4 and Ref1-Ref10, the Math2 source can be set to Math1; the Math3 source
can be set to Math1 or Math2; the Math4 source can be set to Math1, Math2, or Math3.
Selecting a Math automatically enables its window display and sets its Operation on/off switch
to ON.
Scale
Scale is used to set the vertical scale of the operation result. You can set the vertical
scale in the following ways.
• In Math menu, rotate the corresponding multipurpose knob on the front panel
or click or tap the icon at the right side of the input field of Scale to increase or
decrease the scale value. You can also click or tap the input field to input a
specific value with the displayed numeric keypad.
• Close the menu and then adjust the vertical scale with the pinch&stretch gesture
on the touch screen. You can also rotate the corresponding multipurpose knob
on the front panel to adjust the vertical scale. Please refer to
Front Panel
Overview
to configure the front-panel multipurpose knobs.
Offset
Offset is used to set the vertical offset of the operation result. You can set the vertical
offset in the following ways.
• In Math menu, rotate the corresponding multipurpose knob on the front panel
or click or tap the icon at the right side of the input field of Offset to increase or
decrease the scale value. You can also click or tap the input field to input a
specific value with the displayed numeric keypad.
• Close the menu and then adjust the vertical offset with the drag gesture on the
touch screen. You can also rotate the corresponding multipurpose knob on the
front panel to adjust the vertical offset. Please refer to
Front Panel Overview
to
configure the front-panel multipurpose knobs.
Invert
Invert is used to enable or disable the inverted display of the waveform. For setting
methods, refer to descriptions in
To Invert a Waveform
.
Waveform
This oscilloscope provides Main and Zoom for the measurement range.
Math Operation
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• Main indicates that the measurement range is within the main time base region.
• Zoom indicates that the measurement range is within the zoomed time base
region.
To use "Zoom", first enable the
Zoom Mode (Delayed Sweep)
in the
Horizontal
System
menu.
Expand
The oscilloscope supports two vertical expansion modes: GND (default) and Center.
• GND: When the vertical scale is changed, the math operation waveform will
expand or compress about the ground level of the signal.
• Center: When the vertical scale is changed, the math operation waveform will
expand or compress about the center of the display.
Auto Set
Click or tap AutoSetting to adjust the vertical scale and the offset of the operation
results to the optimal value according to the current configuration for you to better
observe.
Label
It is used to set the label for the math operation results. For setting methods, refer to
descriptions in
To Turn the Channel Label Display On/Off
.
Grid
For setting methods, refer to the descriptions in
To Set the Screen Grid
.
9.2 Function Operation
In the Math menu, click or tap the Operator drop-down button to select the desired
function operation. The available function operation types of this oscilloscope include
Intg, Diff, Sqrt, Lg (Base 10 Exponential), Ln, Exp, Abs, and AX+B.
• Intg: calculates the integral of the selected source. For example, you can use
integral to measure the area under a waveform or the pulse energy.
• Diff: calculates the discrete time derivative of the selected source. For example,
you can use differentiate to measure the instantaneous slope of a waveform.
• Sqrt: calculates the square roots of the selected source point by point and
displays the results.
• Lg (Base 10 Exponential): calculates the base 10 exponential of the selected
source point by point and displays the results.
Math Operation
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• Ln: calculates the natural logarithm (Ln) of the selected source point by point
and displays the results.
• Exp: calculates the exponential of the selected source point by point and
displays the results.
• Abs: calculates the absolute value of the selected source and displays the results.
• AX+B: applies a linear function to the selected source, and displays the results.
Figure 9.5 Function Operation Menu
Operation Result Display Window
Click or tap the Operation on/off switch to enable or disable the display of the
operation result window. The source and the vertical scale parameters are displayed
at the top of the window, as shown in the figure below.
Math Operation
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Figure 9.6 Operation Result Display Window
Source
Click the Source drop-down button to select the source from CH1~CH4 or
Ref1~Ref10. When a source channel is selected, the selected channel automatically
switches to the ON state.
TIP
Besides CH1-CH4 and Ref1-Ref10, the Math2 source can be set to Math1; the Math3 source
can be set to Math1 or Math2; the Math4 source can be set to Math1, Math2, or Math3.
Selecting a Math automatically enables its window display and sets its Operation on/off switch
to ON.
Auto Set
Click or tap AutoSetting to adjust the vertical scale and the offset of the operation
results to the optimal value according to the current configuration for you to better
observe.
Scale
Scale is used to set the vertical scale of the operation result. You can set the vertical
scale in the following ways.
• In Math menu, rotate the corresponding multipurpose knob on the front panel
or click or tap the icon at the right side of the input field of Scale to increase or
decrease the scale value. You can also click or tap the input field to input a
specific value with the displayed numeric keypad.
• Close the menu and then adjust the vertical scale with the pinch&stretch gesture
on the touch screen. You can also rotate the corresponding multipurpose knob
Math Operation
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on the front panel to adjust the vertical scale. Please refer to
Front Panel
Overview
to configure the front-panel multipurpose knobs.
Offset
Offset is used to set the vertical offset of the operation result. You can set the vertical
offset in the following ways.
• In Math menu, rotate the corresponding multipurpose knob on the front panel
or click or tap the icon at the right side of the input field of Offset to increase or
decrease the scale value. You can also click or tap the input field to input a
specific value with the displayed numeric keypad.
• Close the menu and then adjust the vertical offset with the drag gesture on the
touch screen. You can also rotate the corresponding multipurpose knob on the
front panel to adjust the vertical offset. Please refer to
Front Panel Overview
to
configure the front-panel multipurpose knobs.
Invert
Invert is used to enable or disable the inverted display of the waveform. For setting
methods, refer to descriptions in
To Invert a Waveform
.
Waveform
This oscilloscope provides Main and Zoom for the measurement range.
• Main indicates that the measurement range is within the main time base region.
• Zoom indicates that the measurement range is within the zoomed time base
region.
To use "Zoom", first enable the
Zoom Mode (Delayed Sweep)
in the
Horizontal
System
menu.
Label
It is used to set the label for the math operation results. For setting methods, refer to
descriptions in
To Turn the Channel Label Display On/Off
.
Expand
The oscilloscope supports two vertical expansion modes: GND (default) and Center.
• GND: When the vertical scale is changed, the math operation waveform will
expand or compress about the ground level of the signal.
• Center: When the vertical scale is changed, the math operation waveform will
expand or compress about the center of the display.
Math Operation
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Grid
For setting methods, refer to the descriptions in
To Set the Screen Grid
.
Parameter Setting
• When the operator is "Intg", click or tap the Offset input field and use the pop-
up numeric keypad to set the DC offset calibration factor of the input signal. You
can also use the corresponding multipurpose knob to set the value.
• When the operator is "Diff", click or tap Smooth input field and use the pop-up
numeric keypad to set the number of smooth times for the differential
operation. You can also use the corresponding multipurpose knob to set the
value.
9.3 FFT Operation
FFT (Fast Fourier Transform) is used to transform time-domain signals to frequency-
domain components (frequency spectrum). This oscilloscope provides FFT operation
function which enables you to observe the time-domain waveform and spectrum of
the signal at the same time. FFT operation can facilitate the following works:
• Measure harmonic components and distortion in the system;
• Display the characteristics of the noise in DC power;
• Analyze vibration.
In the Math menu, click or tap the Operator drop-down button to select FFT to
access the menu as shown in
Figure 9.7
.
Figure 9.7 FFT Operation Menu
Math Operation
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Operation On/Off
Click or tap the Operation on/off switch to enable or disable the FFT operation result
window. The parameters such as center frequency, frequency range, and resolution
are displayed at the top of the window, as shown in the figure below. FFT resolution is
the quotient of the sample rate and the number of FFT points. If the number of FFT
points is a fixed value (65,535 at most), then the lower the sample rate, the higher the
resolution.
Figure 9.8 FFT Operation Window
Source
Click or tap the Source drop-down button to select CH1, CH2, CH3, or CH4 as the
source. When a source channel is selected, the selected channel automatically
switches to the ON state.
Auto Set
Click or tap AutoSetting to adjust the vertical scale and the offset of the operation
results to the optimal value according to the current configuration for you to better
observe.
Frequency Range
In X, select "Span-Center" or "Start-End" mode and then configure the frequency
range setting.
• Span-Center (frequency span to center frequency): Span specifies the
frequency range represented by the width from the frequency at the left side of
Math Operation
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the window to the frequency at the right side of the window. Divide the
frequency span by 10 to obtain the frequency per division.
Click or tap the Center input field to set the frequency of the frequency-domain
waveform relative to the horizontal center of the screen. You can also use the
corresponding multipurpose knob to set the value. Its range is from 5 Hz to 1
GHz. Click or tap the Span input field to set the frequency span with the pop-up
numeric keypad. You can also use the corresponding multipurpose knob to set
the value. Its range is from 10 Hz to 1 GHz.
• Start-End (start frequency to stop frequency): Start frequency specifies the
frequency at the left side of the window. Click or tap the Start input field to set
the start frequency with the pop-up numeric keypad or use the corresponding
multipurpose knob to set the value. Its range is from 0 Hz to (stop frequency-10
Hz). Stop frequency specifies the frequency at the right side of the window. Click
or tap the End input field to set the stop frequency with the pop-up numeric
keypad or use the corresponding multipurpose knob to set the value. Its range is
from (start frequency+10 Hz) to 1 GHz. By default, it is 10 MHz.
Vertical Scale/Offset
In Unit item, you can select dBm/dBV or Vrms as the unit for Scale and Offset.
For how to set the Scale, refer to the descriptions in
Scale
of "Arithmetic Operation".
For how to set the Offset, refer to the descriptions in
Offset
of "Arithmetic Operation".
Window Function
Spectral leakage can be considerably minimized when a window function is used. The
oscilloscope provides 6 FFT window functions which have different characteristics and
are applicable to measure different waveforms, as shown in the table below. You need
to select the window function according to the characteristics of the waveform to be
measured. Click or tap the Window drop-down button to select the desired window
function.
Table 9.1 Window Function
Window
Function
Characteristics
Waveforms Applicable to the
Window Function
Rectangular
Best frequency resolution
Poorest amplitude resolution
Similar to the situation when no
window is applied.
Transient or short pulse, the signal
levels before and after the
multiplication are basically the same
Sine waveforms with the same
amplitudes and rather similar
frequencies
Math Operation
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Window
Function
Characteristics
Waveforms Applicable to the
Window Function
Wide band random noise with
relatively slow change of waveform
spectrum
Blackman-
Harris
Best amplitude resolution
Poorest frequency resolution
Single frequency signal, searching
for higher order harmonics
Hanning
Better frequency resolution and
poorer amplitude resolution
compared with Rectangular
Sine, periodic, and narrow band
random noise
Hamming
A little bit better frequency
resolution than Hanning
Transient or short pulse, the signal
levels before and after the
multiplication are rather different
Flattop Measure the signals accurately
Measure the signal that has no
accurate reference and requires an
accurate measurement
Triangle Better frequency resolution
Measure the narrow band signal
and that has strong noise
interference
Color Grade
Click or tap the Color Grade on/off switch to enable/disable the color grade display
of FFT operation results. When enabled, different colors are displayed on the screen
to indicate the times of data acquisition or acquisition probability. Click or tap the
Reset button for the Color Grade menu to clear the color grade display and display
the color grade again.
Peak Search
Click or tap the icon
at the right side of Peak Search to enter the peak search
menu, as shown in the figure below.
Math Operation
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Figure 9.9 Peak Search
• Peak Search ON/OFF: click or tap the the Peak Search on/off switch to enable
or disable the display of the peak search window. By default, it is OFF.
• Peak Number: click or tap the input field for the Peak Number menu item and
use the pop-up numeric keypad to set the number of peaks. You can also use
the multipurpose menu to set the value. Its range is from 1 to 15. Its default
value is 5.
• Threshold: click or tap the input field for the Threshold menu item to set the
threshold of the peak with the pop-up numeric keypad. You can also use the
multipurpose menu to set the value. The range of the threshold is related to the
current FFT scale and offset.
• Excursion: click or tap the Excursion input field to set the excursion of the peak
or use the corresponding multipurpose knob to set the value. The minimum
value of Excursion is 0 and its unit is consistent with that of FFT.
• Table Order: in
Table Order, select Amp Order or Freq Order as the sorting
mode. By default, it is "Amp Order".
Click or tap Export, then the save setting interface is displayed. You can export the
peak search results to the internal memory or the external USB storage device in CSV
format. In the menu, click or tap File Name input field to set the file name; click or
tap File Path input field and the disk management menu (
Disk Management
) is
displayed. Select the desired location to save the file and then click or tap Save to
save the peak search results.
Clicking or tapping the icon
at the right side of Peak Search can close the peak
search menu.
Math Operation
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9.4 Logic Operation
In the Math menu, click or tap the Operator drop-down button to select the desired
math operation. The logic operations supported by this oscilloscope include A&&B,
A||B, A^B, and !A. After selecting the desired logic operation in the drop-down button
of Operator, you can configure its settings for the selected logic operation type.
Figure 9.10 Logic Operation Menu
• A&&B: Performs logic "AND" operation on the waveform voltage values of the
specified sources point by point and displays the results. In operation, when the
voltage value of the source channel is greater than the threshold of the
corresponding channel, it is regarded as logic "1"; otherwise it is logic "0". The
results of logic AND operation of two binary bits are shown in
Table 9.2 Logic
Operation
.
• A||B: Performs logic "OR" operation on the waveform voltage values of the
specified sources point by point and displays the results. In operation, when the
voltage value of the source channel is greater than the threshold of the
corresponding channel, it is regarded as logic "1"; otherwise it is logic "0". The
results of logic OR operation of two binary bits are shown in
Table 9.2 Logic
Operation
.
• A^B: Performs logic "XOR" operation on the waveform voltage values of the
specified sources point by point and displays the results. In operation, when the
voltage value of the source channel is greater than the threshold of the
corresponding channel, it is regarded as logic "1"; otherwise it is logic "0". The
results of logic XOR operation of two binary bits are shown in
Table 9.2 Logic
Operation
.
Math Operation
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• !A: Performs logic "NOT" operation on the waveform voltage values of the
specified sources point by point and displays the results. In operation, when the
voltage value of the source channel is greater than the threshold of the
corresponding channel, it is regarded as logic "1"; otherwise it is logic "0". The
results of logic "NOT" operation of one binary bit are shown in
Table 9.2 Logic
Operation
.
Table 9.2 Logic Operation
A B A&&B A||B A^B !A
0 0 0 0 0 1
0 1 0 1 1 1
1 0 0 1 1 0
1 1 1 1 0 0
Operation Result Display Window
Click or tap the Operation on/off switch to enable or disable the display of the
operation result window. The source and the waveform sizes parameters are
displayed at the top of the window, as shown in the figure below.
Figure 9.11 Operation Result Display Window
Source
Click or tap the drop-down button of SourceA or SourceB to select CH1, CH2, CH3,
or CH4. When a source channel is selected, the selected channel automatically
switches to the ON state.
Math Operation
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Waveform Size
You can select "Small", "Medium", or "Large" as the waveform display mode.
Offset
Offset is used to set the vertical offset of the operation result. You can set the vertical
offset in the following ways.
• In Math menu, rotate the corresponding multipurpose knob on the front panel
or click or tap the icon at the right side of the input field of Offset to increase or
decrease the scale value. You can also click or tap the input field to input a
specific value with the displayed numeric keypad.
• Close the menu and then adjust the vertical offset with the drag gesture on the
touch screen. You can also rotate the corresponding multipurpose knob on the
front panel to adjust the vertical offset. Please refer to
Front Panel Overview
to
configure the front-panel multipurpose knobs.
Sensitivity
Sets the sensitivity of the digital signal converted from the analog signal on the
source. Click or tap the Sensitivity input field to set the sensitivity with the pop-up
numeric keypad or use the corresponding multipurpose knob to set the value. For
details, refer to
Parameter Setting Method
.
Waveform
This oscilloscope provides Main and Zoom for the measurement range.
• Main indicates that the measurement range is within the main time base region.
• Zoom indicates that the measurement range is within the zoomed time base
region.
To use "Zoom", first enable the
Zoom Mode (Delayed Sweep)
in the
Horizontal
System
menu.
Threshold
Click or tap the threshold input field of the specified channel and use the pop-up
numeric keypad to set the threshold or use the corresponding multipurpose knob to
set the value.
Math Operation
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Label
It is used to set the label for the math operation results. For setting methods, refer to
descriptions in
To Turn the Channel Label Display On/Off
.
Grid
For setting methods, refer to the descriptions in
To Set the Screen Grid
.
9.5 Digital Filter
In the Math menu, click or tap the Operator drop-down button to select the desired
math operation. The digital filters supported by this oscilloscope include: low-pass
filter, high-pass filter, band-pass filter, and band-stop filter.
• LowPass only allows the signals whose frequencies are lower than the current
upper limit frequency to pass.
• HighPass only allows the signals whose frequencies are higher than the current
lower limit frequency to pass.
• BandPass only allows the signals whose frequencies are higher than the current
lower limit frequency and lower than the current upper limit frequency to pass.
• BandStop only allows the signals whose frequencies are lower than the current
lower limit frequency or higher than the current upper limit frequency to pass.
Math Operation
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Figure 9.12 Digital Filter Menu
Operation Result Display Window
Click or tap the Operation on/off switch to enable or disable the display of the
operation result window. The source and the vertical scale parameters are displayed
at the top of the window as shown in the figure below.
Figure 9.13 Operation Result Display Window
Source
Click or tap the Source drop-down button to select from CH1~CH4 or Ref1~Ref10.
When a source channel is selected, the selected channel automatically switches to the
ON state.
Math Operation
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TIP
Besides CH1-CH4 and Ref1-Ref10, the Math2 source can be set to Math1; the Math3 source
can be set to Math1 or Math2; the Math4 source can be set to Math1, Math2, or Math3.
Selecting a Math automatically enables its window display and sets its Operation on/off switch
to ON.
Auto Set
Click or tap AutoSetting to adjust the vertical scale and the offset of the operation
results to the optimal value according to the current configuration for you to better
observe.
Scale
Scale is used to set the vertical scale of the operation result. You can set the vertical
scale in the following ways.
• In Math menu, rotate the corresponding multipurpose knob on the front panel
or click or tap the icon at the right side of the input field of Scale to increase or
decrease the scale value. You can also click or tap the input field to input a
specific value with the displayed numeric keypad.
• Close the menu and then adjust the vertical scale with the pinch&stretch gesture
on the touch screen. You can also rotate the corresponding multipurpose knob
on the front panel to adjust the vertical scale. Please refer to
Front Panel
Overview
to configure the front-panel multipurpose knobs.
Offset
Offset is used to set the vertical offset of the operation result. You can set the vertical
offset in the following ways.
• In Math menu, rotate the corresponding multipurpose knob on the front panel
or click or tap the icon at the right side of the input field of Offset to increase or
decrease the scale value. You can also click or tap the input field to input a
specific value with the displayed numeric keypad.
• Close the menu and then adjust the vertical offset with the drag gesture on the
touch screen. You can also rotate the corresponding multipurpose knob on the
front panel to adjust the vertical offset. Please refer to
Front Panel Overview
to
configure the front-panel multipurpose knobs.
Invert
Invert is used to enable or disable the inverted display of the waveform. For setting
methods, refer to descriptions in
To Invert a Waveform
.
Waveform
This oscilloscope provides Main and Zoom for the measurement range.
Math Operation
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• Main indicates that the measurement range is within the main time base region.
• Zoom indicates that the measurement range is within the zoomed time base
region.
To use "Zoom", first enable the
Zoom Mode (Delayed Sweep)
in the
Horizontal
System
menu.
Frequency Limit
• LowPass: click or tap the ωc input field and use the pop-up numeric keypad to
set the upper limit frequency or use the corresponding multipurpose knob to set
the value.
• HighPass: click or tap the ωc input field and use the pop-up numeric keypad to
set the lower limit frequency or use the corresponding multipurpose knob to set
the value.
• BandPass: click or tap the ωc1 input field and use the pop-up numeric keypad
to set the lower limit frequency. Click or tap the ωc2 input field and use the pop-
up numeric keypad to set the upper limit frequency. You can also use the
corresponding multipurpose knob to set the value to set the lower/upper limit
frequency.
• BandStop: click or tap the ωc1 input field and use the pop-up numeric keypad
to set the lower limit frequency. Click or tap the ωc2 input field and use the pop-
up numeric keypad to set the upper limit frequency. You can also use the
corresponding multipurpose knob to set the value to set the lower/upper limit
frequency.
The settable ranges of the upper and lower limit frequencies are related to the Math
sample rate (displayed at the bottom of the screen when the Math function is
enabled). The sample rate of the analog channel or the changes of the memory depth
can affect the Math sample rate.
Label
It is used to set the label for the math operation results. For setting methods, refer to
descriptions in
To Turn the Channel Label Display On/Off
.
Expand
The oscilloscope supports two vertical expansion modes: GND (default) and Center.
• GND: When the vertical scale is changed, the math operation waveform will
expand or compress about the ground level of the signal.
• Center: When the vertical scale is changed, the math operation waveform will
expand or compress about the center of the display.
Math Operation
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10
Measurements
DHO1000 series oscilloscope provides the quick measurements after "Auto" is
selected, auto measurements for 41 waveform parameters, as well as the cursor
measurement function.
10.1 Auto Scale
When the oscilloscope is correctly connected and has detected a valid input signal,
click or tap the function navigation icon > Auto or press the front-panel
key to enable the waveform auto setting function and open the auto setting function
menu.
• Click or tap the first icon, and then two periods of the signal are automatically
displayed on the screen. Meanwhile, the system will make measurements for the
"period" and "frequency" of the currently displayed waveform. The measurement
results are displayed in the "Result" bar at the right side of the screen.
• Click or tap the second icon, and then multiple periods of the signal are
automatically displayed on the screen. Meanwhile, the system will make
measurements for the "period" and "frequency" of the currently displayed
waveforms in multiple periods. The measurement results are displayed in the
"Result" bar at the right side of the screen.
• Click or tap the third icon to enable the "rise time" measurement item. The
measurement results are displayed in the "Result" bar at the right side of the
screen. By default, it is intended for the fast edge signal.
• Click or tap the fourth icon to enable the "fall time" measurement item. The
measurement results are displayed in the "Result" bar at the right side of the
screen. By default, it is intended for the fast edge signal.
• Click or tap the fifth icon to cancel the auto setting and recovers to the
parameter settings prior to clicking or tapping Auto.
• Click or tap the sixth icon to enter the Auto Config sub-menu under the Utility
menu. For details, please refer to
Auto Config
.
TIP
The waveform auto setting function requires that the frequency of the signal should be greater
than or equal to 35 Hz, and the amplitude greater than or equal to 10 mV. If those conditions
are not met, the waveform auto setting function may be invalid.
Measurements
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10.2 Auto Measurements
You can enter the Measure menu in the following ways.
• Click or tap the function navigation icon at the lower-left corner of the
screen, and then select Measure to enter the "Measure" menu.
• Press the front-panel key to enter the "Measure" menu.
• Click or tap the Measure button on the toolbar to enter the "Measure" menu.
• In
Vertical System
menu, click or tap the Measure button to enter the "Measure"
menu.
10.2.1 Measurement Parameter
This oscilloscope allows you to set the measurement source, enable or disable the all
measurement function, the statistical function, and etc. You can make quick
measurements for many waveform parameters. The measurement results will be
displayed in the Result sidebar at the right section of the screen.
TIP
If there is no signal input for the current source or the measurement result is not within the
valid range (too large or too small), then the measurement results are invalid, and "*****" is
displayed on the screen. Please re-input the signal or set the signal.
Measurements
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10.2.1.1 Time Parameters
Threshold
Middle Value
Threshold
Upper Limit
Rise Time Fall Time
+Width
- Width
Period
Threshold
Lower Limit
Figure 10.1 Time Parameters
• Period: defined as the time between the middle threshold points of two
consecutive, like-polarity edges.
• Frequency: defined as the reciprocal of period.
• Rise Time: indicates the time for the signal amplitude to rise from the threshold
lower limit to the threshold upper limit.
• Fall Time: indicates the time for the signal amplitude to rise from the threshold
upper limit to the threshold lower limit.
• +Width: indicates the time between the threshold middle value of a rising edge
to the threshold middle value of the next falling edge.
• -Width: indicates the time between the threshold middle value of a falling edge
to the threshold middle value of the next rising edge.
• +Duty: indicates the ratio of the positive pulse width to the period.
• -Duty: indicates the ratio of the negative pulse width to the period.
• Tvmax: indicates the time that corresponds to the maximum value of the
waveform (Vmax).
• Tvmin: indicates the time that corresponds to the minimum value of the
waveform (Vmin).
The default values for threshold upper limit, threshold middle value, and threshold
low limit are 90%, 50%, and 10%, respectively.
Measurements
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10.2.1.2 Count Values
The default values for threshold upper limit and threshold low limit are 90% and
10%, respectively.
Positive Pulse Count
It is specified as the number of positive pulses that rise from under the threshold
lower limit to above the threshold upper limit.
Positive Pulse Count = n
1 n2
Threshold
Upper Limit
Threshold
Lower Limit
Negative Pulse Count
It is specified as the number of negative pulses that fall from above the threshold
upper limit to below the threshold lower limit.
1 n2
Negative Pulse Count = n
Threshold
Upper Limit
Threshold
Lower Limit
Rising Edge Count
It is specified as the number of rising edges that rise from under the threshold lower
limit to above the threshold upper limit.
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1 n2
Rising Edge Count = n
Threshold
Upper Limit
Threshold
Lower Limit
Falling Edge Count
It is specified as the number of falling edges that fall from above the threshold
upper limit to below the threshold lower limit.
1 n2
Falling Edge Count = n
Threshold
Upper Limit
Threshold
Lower Limit
Measurements
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10.2.1.3 Delay and Phase Parameters
Source A
Source B
Period
Delay
Figure 10.2 Delay and Phase Parameters
1. Delay(r-r): indicates the time difference between the threshold middle values of
the rising edge of Source A and that of Source B. Negative delay indicates that
the rising edge of Source A occurred after that of Source B.
2. Delay(f-f): indicates the time difference between the threshold middle values of
the falling edge of Source A and that of Source B. Negative delay indicates that
the falling edge of Source A occurred after that of Source B.
3. Delay(r-f): indicates the time difference between the threshold middle values of
the rising edge of Source A and the falling edge of Source B. Negative delay
indicates that the rising edge of Source A occurred after the falling edge of
Source B.
4. Delay(f-r): indicates the time difference between the threshold middle values of
the falling edge of Source A and the rising edge of Source B. Negative delay
indicates that the falling edge of Source A occurred after the rising edge of
Source B.
5. Phase(r-r): indicates the phase deviation between the threshold middle values of
the rising edge of Source A and that of Source B. The phase formula is as follows:
°360×=
sourceA
RR
RR
Period
BDelayA
BPhaseA
Wherein,
PhaseA
R
B
R
represents Phase(r-r),
DelayA
R
B
R
represents Delay(r-r), and
Period
sourceA
represents the period of Source A.
6. Phase(f-f): indicates the phase deviation between the threshold middle values of
the falling edge of Source A and that of Source B. The phase formula is as follows:
°360×=
sourceA
FF
FF
Period
BDelayA
BPhaseA
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Wherein,
PhaseA
F
B
F
represents Phase (f-f),
DelayA
F
B
F
represents Delay(f-f), and
Period
sourceA
represents the period of Source A.
7. Phase(r-f): indicates the phase deviation between the threshold middle values of
the rising edge of Source A and the falling edge of Source B. The phase formula is
as follows:
°360×=
sourceA
FR
FR
Period
BDelayA
BPhaseA
Wherein,
PhaseA
R
B
R
represents Phase (r-f),
DelayA
R
B
R
represents Delay(r-f), and
Period
sourceA
represents the period of Source A.
8. Phase(f-r): indicates the phase deviation between the threshold middle values of
the falling edge of Source A and the rising edge of Source B. The phase formula is
as follows:
°360×=
sourceA
RF
RF
Period
BDelayA
BPhaseA
Wherein,
PhaseA
F
B
R
represents Phase (f-r),
DelayA
F
B
R
represents Delay(f-r), and
Period
sourceA
represents the period of Source A.
TIP
• Source A and Source B can be any channel among CH1~CH4 and Math1~Math4.
• The default threshold middle value is 50%.
10.2.1.4 Voltage Parameters
Vpp
Vtop
Vbase
Overshoot
Vmax
Vmin
Vupper
Vmid
Vlower
Preshoot
Figure 10.3 Voltage Parameters
Measurements
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1. Vmax: indicates the voltage value from the highest point of the waveform to the
GND.
2. Vmin: indicates the voltage value from the lowest point of the waveform to the
GND.
3. Vpp: the voltage value from the highest point to the lowest point of the
waveform.
4. Vtop: indicates the voltage value from the flat top of the waveform to the GND.
5. Vbase: indicates the voltage value from the flat base of the waveform to the GND.
6. Vamp: indicates the voltage value from the top of the waveform to the base of
the waveform.
7. Vupper: indicates the actual voltage value that corresponds to the threshold
maximum value.
8. Vmid: indicates the actual voltage value that corresponds to the threshold middle
value.
9. Vlower: indicates the actual voltage value that corresponds to the threshold
minimum value.
10. Vavg: indicates the arithmetic average value on the whole waveform or in the
gating area. The formula is shown as follows:
n
x
Average
n
i
i
∑
1=
=
Wherein,
x
i
is the
ith
point, and
n
is the number of points being measured.
11. VRMS: indicates the root mean square value on the whole waveform or in the
gating area. The formula is as follows:
n
x
RMS
n
i
i
∑
1
2
=
=
Wherein,
x
i
is the measurement result of the
ith
point, and
n
is the number of
points being measured.
12. Per.VRMS: indicates the root mean square value within a period. The formula is
as shown above.
13. Overshoot: indicates the ratio of the difference between the maximum value and
the top value of the waveform to the amplitude value.
14. Preshoot: indicates the ratio of the difference between the minimum value and
the base value of the waveform to the amplitude value.
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15. AC RMS: indicates the root-mean-square value of the waveforms, with the DC
component removed. The formula is shown as follows:
n
Averagex
DevS
n
i
i
∑
1
2
)(
.td
=
−
=
Wherein,
x
i
is the amplitude of the
ith
point,
Average
is the waveform average
value, and
n
is the number of points being measured.
10.2.1.5 Other Parameters
• Positive Slew Rate: On the rising edge, first calculate the difference between
the high value and the low value, then use the difference to divide the
corresponding time value to obtain the positive slew rate.
• Negative Slew Rate: On the falling edge, first calculate the difference between
the low value and the high value, then use the difference to divide the
corresponding time value to obtain the negative slew rate.
• Area: indicates the area of the whole waveform within the screen. The unit is
V*s. The area of the waveform above the zero reference (namely the vertical
offset) is positive, and the area of the waveform below the zero reference is
negative. The area measured is the algebraic sum of the area of the whole
waveform within the screen.
• Period Area: indicates the area of the first period of waveform on the screen.
The unit is V*s. The area of the waveform above the zero reference (namely the
vertical offset) is positive, and the area of the waveform below the zero
reference is negative. The area measured is the algebraic sum of the whole
period area.
10.2.2 Select the Measurement Item
In the Measure menu, click or tap Horizontal, Vertical, or Other to go to the desired
menu. You can also slide to select the measurement item to enter the corresponding
interface, as shown in
Figure 10.4
,
Figure 10.5
, and
Figure 10.6
. Click or tap any of
the measurement items to enable the measurements. This series allows you to enable
measurements of up to 14 items at the same time.
TIP
You can also refer to
Multi-pane Windowing
to enable all measurements.
• Vertical: Vmax, Vmin, Vpp, Vtop, Vbase, Vamp, Vupper, Vmid, Vlower, Vavg,
VRMS, Per. VRMS, Overshoot, Preshoot, Area, Per.Area, and AC.RMS.
Measurements
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Figure 10.4 Vertical Measurement Items
• Horizontal: Period, Frequency, Rise Time, Fall Time, +Width, -Width, +Duty, -
Duty, Positive Pulse Count, Negative Pulse Count, Rising Edge Count, Falling
Edge Count, Tvmax, Tvmin, +Slew Rate, and -Slew Rate.
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Figure 10.5 Horizontal Measurement Items
• Other: Delay (r-r), Delay (r-f), Delay (f-r), Delay (f-f), Phase (r-r), Phase (r-f),
Phase(f-r), and Phase (f-f).
Figure 10.6 Other Measurement Items
Measurements
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10.2.3 Measurement Settings
In the Measure menu, click or tap the Setting button to enter the measurement
setting menu.
Figure 10.7 Measurement Settings Menu
Indicator
In the Measure setting menu, click or tap the Indicator on/off switch to enable or
disable the indicator.
If enabled, one or more cursors will be displayed on the screen. Before enabling the
indicator, you need to enable at least one auto measurement parameter and the
number of cursors will change with the measurement parameter enabled.
TIP
When no measurement parameter is selected or there is no source input, the indicator is not
available. The indicator changes when the waveform is expanded or compressed horizontally.
Measurement Threshold
• First, select
% or Abs as the display type.
• Click or tap the drop-down button of Source to select the desired channel
(CH1~CH4 or Math1~Math4).
• Click or tap the input field of
Upper and use the pop-up numeric keypad to set
the upper limit of the measurement or use the corresponding multipurpose
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knob to set the value. When the upper limit is set to be smaller than or equal to
the current middle value, a prompt message "Set at lower limit" is displayed.
Then, the oscilloscope will automatically adjust the upper limit and make it
greater than the middle value. By default, it is 90%. The default absolute value
varies with the vertical setting of the channel.
• Click or tap the input field of Mid and use the pop-up numeric keypad to set the
middle value of the measurement or use the corresponding multipurpose knob
to set the value. The middle value is limited by the settings of the upper limit
and lower limit. By default, it is 50%. The default absolute value varies with the
vertical setting of the channel.
• Click or tap the input field of Lower and use the pop-up numeric keypad to set
the lower limit of the measurement or use the corresponding multipurpose knob
to set the value. When the lower limit is set to be greater than or equal to the
current middle value, a prompt message "Set at upper limit" is displayed. Then,
the oscilloscope will automatically adjust the lower limit and make it smaller than
the middle value. By default, it is 10%. The default absolute value varies with the
vertical setting of the channel.
• Click or tap Default to return the upper, middle, and lower limits to their default
values.
Click or tap the Threshold on/off switch to enable or disable the threshold settings.
TIP
Modifying the threshold will affect the measurement results of time, delay, and phase
parameters.
Measurement Range
Click or tap the drop-down button of the Region to select "Main" or "Zoom".
• Main: indicates that the measurement range is within the main time base region.
• Zoom: indicates that the measurement range is within the zoomed time base
region.
TIP
To use "Zoom", you need to enable the
Zoom Mode (Delayed Sweep)
first.
Amplitude Measurement Method
Click or tap
Auto or Manual as the amplitude measurement method, which affects
the measurement method for the top and base values
Measurements
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If you select "Manual", set the following parameters:
• Click or tap the Top toggle button to select Histogram or Max-Min as the top
value measurement method.
• Click or tap the Base toggle button to select Histogram or Max-Min as the base
value measurement method.
TIP
If you select "Manual" for the amplitude method, the measurement results of other parameters
may be affected.
"Histogram" and "Max-Min" are the internal measurement algorithm for the oscilloscope.
Remove the Measurement Results
Refer to
Remove the Measurement Results
.
Statistics
Click or tap the Statistic on/off switch to enable or disable the statistical function.
This oscilloscope can make a statistics and display the current values of multiple
parameters, as shown in the figure below.
• Click or tap any measurement item in the "Result" sidebar at the right side of the
screen and a window is displayed. Click or tap Reset Stat. to clear the history
statistics data and makes statistics again. You can also click or tap Reset Stat. in
the measurement setting menu.
• Click or tap the input field of Count and use the pop-up numeric keypad to set
the count value. You can also use the corresponding multipurpose knob to set
the value. Its range is from 2 to 100,000. Its default value is 1000.
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• Click or tap the icon at the lower-right corner of the measurement statistics
label to unfold the statistics result to display all the measurement statistics items.
Click or tap the
icon to fold the measurement statistics label.
10.2.4 Remove the Measurement Results
This oscilloscope allows you to delete the measurement results of the parameters.
• In Measure setting menu, click or tap Remove to delete the currently selected
measurement item that you've added; click or tap Remove All to delete all the
displayed measurement items.
• Click or tap any measurement item in the "Result" sidebar at the right side of the
screen and a window is displayed. Click or tap
Remove to delete the currently
selected measurement item that you've added; click or tap Remove All to delete
all the displayed measurement items.
• In the "Result" sidebar, select a measurement item and drag it to the right to
delete it quickly.
10.3 Cursor Measurements
Cursor measurement can measure the X axis values (e.g. Time) and Y axis values (e.g.
Voltage) of the selected waveform. Before making cursor measurements, connect the
signal to the oscilloscope to acquire stable display. The cursor measurement function
provides the following two cursors.
Figure 10.8 Cursors
• X Cursor
X cursor is a vertical solid/dotted line that is used to make horizontal
adjustments. It can be used to measure time (s) and frequency (Hz).
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- Cursor A is a vertical solid line ( is displayed at the bottom of the screen),
and Cursor B is a vertical dotted line (
is displayed at the bottom of the
screen).
- In the XY cursor mode, X cursor is used to measure the waveform
amplitude of Source X.
• Y Cursor
Y cursor is a horizontal solid/dotted line that is used to make vertical
adjustments. It can be used to measure amplitude (the unit is the same as that of
the source channel amplitude).
- Cursor A is a horizontal solid line (
is displayed at the right section of
the screen), and Cursor B is a horizontal dotted line (
is displayed at the
right section of the screen).
- In XY cursor mode, Y cursor is used to measure the waveform amplitude of
Source Y.
You can enable cursor measurements in the following ways.
• Click or tap the function navigation icon > Cursors to enable cursor
measurements.
• Click or tap the Cursors button on the toolbar to enable cursor measurements.
• Press the front-panel key to enable cursor measurements.
The measurement results are displayed in the "Result" bar at the right side of the
screen.
• AX: indicates the X value at Cursor A.
• AY: indicates the Y value at Cursor A.
• BX: indicates the X value at Cursor B.
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• BY: indicates the Y value at Cursor B.
• ∆X: indicates the horizontal spacing between Cursor A and Cursor B.
• ∆Y: indicates the vertical spacing between Cursor A and Cursor B.
• 1/∆X: indicates the reciprocal of the horizontal spacing between Cursor A and
Cursor B.
Click or tap the result bar and then select Remove or Setting in the pop-up window.
• Click or tap Remove. Then the current cursor measurement results will be
cleared.
• Click or tap Setting. Then the "Cursors" menu is displayed. You can select the
cursor mode: Manual, Track, and XY.
10.3.1 Manual Mode
In the manual cursor mode, you can adjust the cursor manually to measure the value
of the waveforms of the specified source at the current cursor. If the settings for the
parameter such as the cursor type and measurement source are different, the
measurement results will be different for cursor measurement.
In the Cursors menu, click or tap Manual for the Mode item to enable the Manual
cursor measurement function. The measurement results are displayed in the "Result"
bar at the right side of the screen. When you change the cursor position, the
measurement results will be changed accordingly.
Figure 10.9 Manual Mode Setting Menu
Select the Measurement Source
Click or tap the drop-down button of Source to select the desired channel (None,
CH1~ CH1~CH4, or Math1~ Math4).
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When a specified channel is selected as the source, it will be automatically turned on.
Select Cursor Type
Click or tap the Select toggle button to select "X" or "Y".
• X: It is a pair of vertical solid (Cursor A)/dotted (Cursor B) lines, used for
measuring time parameters. The measurement results include AX, BX, ∆X, and 1/
∆X.
• Y: It is a pair of horizontal solid (Cursor A)/dotted (Cursor B) lines, used for
measuring voltage parameters. The measurement results include AY, BY, and ∆Y.
Adjust Cursor Position
1. When "X" is selected, you can adjust the position of X cursor.
- Click or tap the input field of AX and use the pop-up numeric keypad to set the
horizontal position of Cursor A (X cursors). The horizontal axis indicates time,
and the unit of its setting value is the same as that of the horizontal unit. Its
adjustable range is limited within the screen.
- Click or tap the input field of BX and use the pop-up numeric keypad to set the
horizontal position of Cursor B (X cursors). The horizontal axis indicates time,
and the unit of its setting value is the same as that of the horizontal unit. Its
adjustable range is limited within the screen.
- Click or tap the AX BX on/off switch to turn on/off adjusting the horizontal
position of Cursor A and Cursor B (X cursors) simultaneously. The horizontal
spacing between Cursor A and Cursor B (X cursors) remains unchanged.
2. When "Y" is selected, you can adjust the position of Y cursor.
- Click or tap the input field of AY, and then use the pop-up numeric keypad to
set the vertical position of Cursor A (Y cursors). The vertical axis indicates
voltage, and the unit of its setting value is the same as that of the vertical unit.
- Click or tap the input field of BY and use the pop-up numeric keypad to set the
vertical position of Cursor B (Y cursor). The vertical axis indicates voltage, and
the unit of its setting value is the same as that of the vertical unit.
- Click or tap the
AY BY on/off switch to turn on/off adjusting the vertical
position of Cursor A and Cursor B (Y cursors) simultaneously. The vertical
spacing between Cursor A and Cursor B (Y cursors) remains unchanged.
You can also use the front-panel multipurpose knob to adjust the cursor
position. To configure the multipurpose knobs, please refer to
Front Panel Overview
.
Measurement Example
Measure the period of a sine wave by using the manual cursor measurement and
auto measurement respectively. The measurement results are both 8 μs.
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Figure 10.10 Manual Cursor Measurement Example
Close the Cursor Measurement Result Window
When cursor measurement is enabled, you can disable it in the following ways:
• In the Cursors menu, click or tap the Remove button to disable cursor
measurements.
• In the "Result" bar at the right side of the screen, click or tap the "Cursors" label
and then click or tap
Remove in the pop-up window.
• In the "Result" bar at the right side of the screen, drag the "Cursors" label to the
right to simply disable cursor measurements.
• Press the front-panel key to disable cursor measurements.
10.3.2 Track Mode
In the Track mode, you can adjust the two pairs of cursors (Cursor A and Cursor B) to
measure the X and Y values on two different sources respectively. When the cursors
are moved horizontally/vertically, the markers will position on the waveform
automatically. When the waveform is expanded or compressed horizontally/vertically,
the markers will track the points being marked at the last adjustment of the cursors.
In the Cursors menu, click or tap Track for the Mode item to enable the Track cursor
measurement function. The measurement results are displayed in the "Result" bar at
the right section of the screen.
Measurements
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Figure 10.11 Track Mode Setting Menu
Select the Measurement Source
• Click or tap the drop-down button of AX Source to select the desired channel
(None, CH1~CH4, or Math1~Math4).
• Click or tap the drop-down button of BX Source to select the desired channel
(None, CH1~CH4, or Math1~Math4).
When a specified channel is selected as the source, it will be automatically turned on.
Select the Track Mode
Click or tap the Track toggle button to select "X" or "Y" as the current track axis. By
default, it is "X".
• X: When the X cursor position is adjusted, Y cursor will automatically track the
intersection point between X cursor and source signal
• Y: When the Y cursor position is adjusted, X cursor will automatically track the
intersection point between Y cursor and source signal.
Adjust Cursor Position
• When "X" is selected, you can adjust the position of X cursor.
- Click or tap the input field of AX and use the pop-up numeric keypad to set
the horizontal position of Cursor A (X cursor). Its adjustable range is limited
within the screen.
- Click or tap the input field of BX and use the pop-up numeric keypad to set
the horizontal position of Cursor B (X cursors). Its adjustable range is
limited within the screen.
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- Click or tap the AX BX on/off switch to turn on/off adjusting the horizontal
position of Cursor A and Cursor B (X cursors) simultaneously. The horizontal
spacing between Cursor A and Cursor B (X cursors) remains unchanged.
• When "Y" is selected, you can adjust the position of Y cursor.
- Click or tap the input field of AY, and then use the pop-up numeric keypad
to set the vertical position of Cursor A (Y cursors).
- Click or tap the input field of BY and use the pop-up numeric keypad to set
the vertical position of Cursor B (Y cursor).
- Click or tap the AY BY on/off switch to turn on/off adjusting the vertical
position of Cursor A and Cursor B (Y cursors) simultaneously. The vertical
spacing between Cursor A and Cursor B (Y cursors) remains unchanged.
You can also use the front-panel multipurpose knob to adjust the cursor
position. To configure the multipurpose knobs, please refer to
Front Panel Overview
.
Measurement Example
Set the AX Source to CH1, BX Source to CH2, and Track to "X".
When the AX cursor position is adjusted, AY cursor will automatically track the
intersection point between AX cursor and source signal (CH1); When the BX cursor
position is adjusted, BY cursor will automatically track the intersection point between
BX cursor and source signal (CH2). The measurement results are displayed in the
"Result" bar, as shown in
Figure 10.12
. Then, expand the waveforms horizontally, and
you will find that the cursor will track the point that has been marked, as shown in
Figure 10.13
.
Figure 10.12 Track Measurement (before Horizontal Expansion)
Measurements
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Figure 10.13 Track Measurement (after Horizontal Expansion)
Close the Cursor Measurement Result Window
When cursor measurement is enabled, you can disable it in the following ways:
• In the Cursors menu, click or tap the Remove button to disable cursor
measurements.
• In the "Result" bar at the right side of the screen, click or tap the "Cursors" label
and then click or tap Remove in the pop-up window.
• In the "Result" bar at the right side of the screen, drag the "Cursors" label to the
right to simply disable cursor measurements.
• Press the front-panel key to disable cursor measurements.
10.3.3 XY Mode
In the Cursors menu, click or tap XY for the Mode item to enable the XY cursor
measurement function. The measurement results are displayed in the "Result" bar at
the right section of the screen.
Measurements
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Figure 10.14 XY Mode Setting Menu
TIP
By default, XY mode is unavailable. It is available only when the horizontal time base mode is
"XY". To enable the XY mode, please refer to
Enable the XY Mode
.
Adjust Cursor Position
• Click or tap to select the "X" tab under the
Select menu item to set the X value
for the specified cursor.
- Click or tap the input field of AX and use the pop-up numeric keypad to set
the X value at Cursor A.
- Click or tap the input field of BX and use the pop-up numeric keypad to set
the X value at Cursor B.
- Click or tap the AX BX on/off switch to turn on/off adjusting the X value at
Cursor A and the X value at Cursor B simultaneously.
• Click or tap to select "Y" under the Select item to set the Y value for the
specified cursor.
- Click or tap the input field of AY and use the pop-up numeric keypad to set
the Y value at Cursor A.
- Click or tap the input field of BY and use the pop-up numeric keypad to set
the Y value at Cursor B.
- Click or tap to the AY BY on/off switch to turn on/off adjusting the Y value
at Cursor A and the Y value at Cursor B simultaneously.
You can also use the front-panel multipurpose knob to adjust the cursor
position. To configure the multipurpose knobs, please refer to
Front Panel Overview
.
During the adjustment, the measurement results will change accordingly. The
adjustable range is limited within the screen.
Measurements
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Close the Cursor Measurement Result Window
When cursor measurement is enabled, you can disable it in the following ways:
• In the Cursors menu, click or tap the Remove button to disable cursor
measurements.
• In the "Result" bar at the right side of the screen, click or tap the "Cursors" label
and then click or tap Remove in the pop-up window.
• In the "Result" bar at the right side of the screen, drag the "Cursors" label to the
right to simply disable cursor measurements.
• Press the front-panel key to disable cursor measurements.
Measurements
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11
Digital Voltmeter (DVM) and Frequency
Counter
This series oscilloscope provides a built-in digital voltmeter (DVM) and frequency
counter, which enable you to perform more accurate measurements, improving user
experience in counter and frequency measurement.
11.1 Digital Voltmeter (DVM)
The built-in DVM of this oscilloscope provides 4-digit voltage measurements on any
analog channel. DVM measurements are asynchronous from the oscilloscope's
acquisition system and are always acquiring. You can enable the DVM measurements
in the following ways.
• Click or tap the function navigation icon > DVM to enable DVM
measurements.
• Click or tap the DVM button on the toolbar to enable DVM measurements.
• Press the front-panel key and then select DVM in the displayed "Analyse"
menu to enable the DVM measurements.
After the DVM measurements are enabled, the "DVM" label displaying the current
voltage value and voltage mode appears in the "Result" bar at the right section of the
screen, as shown in the figure below.
The voltage value in the label shows the measurement extrema over the last 3
seconds.
Click or tap the "DVM" label and then a window is displayed. Click or tap
Setting to
enter the DVM setting menu as shown in
Figure 11.1
. You can click or tap Remove to
disable DVM measurements.
Digital Voltmeter (DVM) and Frequency Counter
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11.1.1 Measurement Settings
After the DVM is enabled, click or tap the "DVM" label in the "Result" bar at the right
section of the screen and a window is displayed. Click or tap Setting in the window to
enter the DVM setting menu, as shown in the figure below.
Figure 11.1 DVM Setting Menu
Select the Measurement Source
Click or tap the Source drop-down button to select the desired source. The analog
channel (CH1-CH4) can be selected to be the measurement source.
Even if the analog channel (CH1-CH4) is not enabled, you can still perform the DVM
measurements.
Select the Measurement Mode
In the
Mode item, you can select the DVM mode. The DVM measurement modes
include AC RMS, DC, and AC+DC RMS.
• AC RMS: displays the root-mean-square value of the acquired data, with the DC
component removed.
• DC: displays the average value of the acquired data.
• AC+DC RMS: displays the root-mean-square value of the acquired data.
Set the Limits
Click or tap the Beeper on/off switch to turn on or off the beeper. When the beeper is
turned on, you can enable the beeper to sound an alarm when the voltage value is
inside or outside the limited range.
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• Limits Condition Setting
Click or tap the When toggle button to select "In Limits" or "Out Limits".
- In Limits: when the voltage value is inside the limited range, you can enable
or disable the beeper to sound an alarm.
- Out Limits: when the voltage value is outside the limited range, you can
enable or disable the beeper to sound an alarm.
• Upper/Lower Limit Setting
Click or tap the input field of Upper, then use the pop-up numeric keypad to set
the upper limit of the voltage or use the corresponding multipurpose knob to
set the value.
Click or tap the input field of Lower, and then use the pop-up numeric keypad to
set the lower limit of the voltage or use the corresponding multipurpose knob to
set the value.
11.1.2 Remove the Measurement
Click or tap the "DVM" label in the "Result" bar and a window is displayed. Click or
tap Remove to disable DVM measurements and clear the measurement results. You
can also click or tap Remove in the DVM setting menu to disable the function.
11.2 Frequency Counter
The frequency counter analysis function provides frequency, period, or edge event
counter measurements on any analog channel.
You can enable the counter in the following ways:
• Click or tap > Counter to enable the counter.
• Click or tap the Counter button on the toolbar to enable the counter.
• Press the front-panel key and then select Counter in the displayed
"Analyse" menu to enable the counter.
After the counter is enabled, the "Counter" label displaying the counter measurement
results appears in the "Result" bar at the right section of the screen, as shown in the
figure below.
Digital Voltmeter (DVM) and Frequency Counter
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You can click or tap the "Counter" label in the "Result" bar and select Reset Stat,
Setting, or Remove in the displayed window.
11.2.1 Measurement Settings
After the frequency counter is enabled, click or tap the "Counter" label in the "Result"
bar at the right section of the screen and a window is displayed. Click or tap Setting
in the window to enter the counter setting menu, as shown in the figure below.
Figure 11.2 Frequency Counter Setting Menu
Select the Measurement Source
Click or tap the drop-down button of Source to select the desired source. Analog
channels (CH1-CH4) and EXT can be selected as the source of the frequency counter.
Set Resolution
For Period and Frequency measurements, you need to set the readout resolution.
Click or tap the input field of
Resolution to set the resolution by using the pop-up
numeric keypad. You can also use the corresponding multipurpose knob to set the
value. The range of resolution is from 3 bits to 6 bits. By default, it is 4 bits.
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The greater the resolution, the longer the gate time. In this way, the measurement
time will be longer.
Select the Measurement Item
In the Measure item, you can select the desired measurement item. Available options
include Frequency, Period, and Totalize. Wherein, Totalize indicates the count of edge
events on the signal.
Clear Count
When "Totalize" is selected as the measurement item, the oscilloscope measures the
count of edge events on the signal. At this time, click or tap Clear Count to clear the
measurement results and start the measurements again.
Statistics Results
Click or tap the Statistic on/off switch to turn on/off displaying all statistical items.
When enabled, all the statistical results will be displayed in the "Counter" label in the
"Result" bar.
11.2.2 Reset Statistics
Click or tap the "Counter" label in the "Result" bar at the right section of the screen
and a window is displayed. Click or tap Reset Stat. in the window to reset the
statistics.
11.2.3 Remove the Measurement
Click or tap the "Counter" label in the "Result" bar at the right section of the screen
and a window is displayed. Click or tap Remove to clear the measurement results. The
"Counter" label disappears from the "Result" bar accordingly. You can also click or tap
Remove in the counter setting menu to disable the function.
Digital Voltmeter (DVM) and Frequency Counter
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12
Reference Waveform
This series oscilloscope provides 10 reference waveform positions (Ref1~Ref10). In
the actual test process, you can compare the signal waveform with the reference
waveform to locate the failure.
12.1 To Enable Ref Function
You can enter the Ref menu in the following ways.
• Click or tap the function navigation icon at the lower-left corner of the
screen, and then select Ref to enter the reference waveform function menu.
• Press the front-panel key to enter the reference waveform function menu.
Figure 12.1 Reference Waveform Menu
When the Ref function is enabled, you can select different colors for reference
waveforms, set the source of each reference channel, adjust the vertical scale and
offset of the reference waveform, save the reference waveform to the internal or
external memory, and recall it when necessary.
12.2 To Set the Reference Waveform
In the Ref menu, you can specify a channel to serve as the reference channel. You can
save or clear the reference channel.
To Select the Reference Channel
Click or tap the drop-down button of Current to select the reference waveform
channel (Ref1-Ref10). By default, Ref1 is enabled.
Reference Waveform
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To Select the Ref Source
Click or tap the drop-down button of Source to select the desired reference
waveform source (CH1~ CH4 or Math1~ Math4).
To Save the Reference Waveform to Internal Memory
Click or tap SaveToRef to save the displayed waveform for the specified source to the
internal memory as the reference waveform.
CAUTION
This operation only saves the reference waveform to the volatile memory, and the
waveform will be cleared at power-off or restoring to the default settings. If you want to
store reference waveforms that can be recalled when necessary, please export the
waveform to internal or external memory (
To Export to Internal or External Memory
).
To Clear the Specified Reference Waveform
Click or tap
Clear to clear the specified reference waveform for the "current
channel".
You can also click or tap the Clear button in the function navigation menu or press
the front-panel key to clear the reference waveforms of all the reference
channels.
12.3 To Set the Ref Waveform Display
After clicking or tapping SaveToRef, you can adjust the vertical scale and offset of the
reference waveform specified in Current.
Modify the Vertical Scale
Click or tap the input field of VScale, and then use the pop-up numeric keypad to set
the vertical scale of the reference waveform. You can directly click or tap the icons
at the right side of the input field of VScale to increase or decrease the vertical
scale value. You can also use the corresponding multipurpose knob to adjust the
scale.
Modify the Vertical Offset
Click or tap the input field of VOffset, and then use the pop-up numeric keypad to
set the vertical offset of the reference waveform. You can directly click or tap the Up
and Down arrow icons at the right side of the input field of VOffset to
Reference Waveform
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increase or decrease the vertical offset value. You can also use the corresponding
multipurpose knob to adjust the offset.
Restore the Reference Waveform
If you have adjusted the vertical scale and offset for the specified reference waveform
of the current channel, to reset the reference waveform to the position where the
source channel stays prior to the SaveToRef operation, click or tap Reset.
Set the Reference Waveform Color
This series oscilloscope provides five colors (gray, green, light blue, red, and orange)
to mark the reference waveforms of different channels in order to distinguish them.
Click or tap the drop-down button of Color to select the color of the reference
waveform of the channel.
Set the Reference Waveform Label
Click or tap the Label on/off switch to enable or disable the label display of the
specified reference waveform.
Click or tap the input field of Label to set the label of the specified reference channel
with the pop-up numeric keypad.
12.4 Export and Import Operation
To Export to Internal or External Memory
You can save the current reference waveform to the internal memory or external USB
storage device. The file format of the reference waveform is "*.ref*. bin",*.csv".
Click or tap Export to enter the reference waveform file saving interface.
• Set the Format
In the file saving interface, click or tap the drop-down button of Format to select
"*.ref", "*.bin", or "*.csv" as the saving format.
• Set the Filename
Click or tap the input field of File Name, then the filename editing interface is
displayed. Input the filename with the pop-up numeric keypad.
For the methods of using the numeric keypad, refer to descriptions in
Parameter
Setting Method
.
• Set the Save Path
Reference Waveform
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Click or tap the File Path input field, then the disk management Menu is
displayed. Through the disk management menu, you can save the current
reference waveform to the internal memory or external USB storage device. Then
click or tap Save to complete the save operation. For details about the disk
management operation, refer to the
Disk Management
section in
Store and
Load
.
TIP
• Only when the reference waveform is saved, can this export function be valid.
• This series only supports the flash memory USB storage device of FAT32 format.
• For the ".bin" format file, refer to
Binary Data Format (.bin)
.
To Import from Internal or External Memory
You can import the stored reference waveform file from the internal memory or
external USB storage device to the instrument and display the file on the screen.
Click or tap
Import to enter the reference waveform file loading interface.
• Set the Format
In the file loading interface, click or tap the drop-down button of Format to
select "*.ref" as the loading format.
• Set the Load Path
Click or tap the input field of File Path, then the disk management interface is
displayed.
Through the disk management menu, you can load the current reference
waveform to the waveform view of the oscilloscope. Then click or tap Load to
complete the load operation. For details about the disk management operation,
refer to the
Disk Management
section in
Store and Load
.
Reference Waveform
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13
Pass/Fail Test
During the product design and manufacturing process, you usually need to monitor
the variations of the signal or judge whether the product is up to standard. The pass/
fail test function of this series oscilloscope can accomplish this task perfectly. It
compares the signal under test with "standard" waveforms and display the test results
based on user-defined test rules. When the pass/fail status is detected, you can
choose to stop monitoring, sound an alarm with the beeper, or save the current
screen image.
Click or tap the function navigation icon at the lower-left corner of the screen to
open the function navigation. Then click or tap the Pass/Fail button to enter the
"PassFail" setting menu. You can also press the front-panel key and select Pass/
Fail to enter the "PassFail" setting menu. The menu is as shown in the figure below.
Figure 13.1 Pass/Fail Test Menu
13.1 To Enable or Disable the Pass/Fail Test Function
In the "Pass/Fail" setting menu, click or tap the Enable on/off switch to enable or
disable the pass/fail test function.
You can select the source, create mask, and set test result output only after the pass/
fail test function is enabled.
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13.2 To Select the Source
Click or tap the drop-down button of Source to select the desired source. The
available output channels include CH1-CH4.
TIP
When a disabled channel is selected as the source, it will be automatically turned on.
13.3 To Create a Mask
In the Pass/Fail menu, you can self-define the mask of the pass/fail test. The mask can
be imported or exported.
To Create a Mask
Click or tap X Mask and Y Mask respectively to set the horizontal tolerance range
and vertical tolerance range with the pop-up numeric keypad. You can also use the
icons at the right side of the input fields or use the corresponding multipurpose knob
to set the values. Then click or tap Create to apply the currently created mask (the
region not covered by blue within the screen).
To Load a Mask
When the pass/fail test function is enabled, you can load the test mask files from the
internal memory or external USB storage device (when detected) and apply them to
the current pass/fail test function.
Click or tap Load to enter the file loading interface. Click or tap the input field of File
Path to load the specified test mask files (in *.pf format) and apply them to the
current pass/fail test function. For details, refer to descriptions in
Disk Management
section in
Store and Load
.
To Save the Mask
When the pass/fail test function is enabled, you can save the current test mask range
to the internal memory or external USB storage device (when detected) in "*.pf"
format.
Click or tap
Save to enter the file saving interface. Click or tap the input field of File
Name and File Path to input the filename and select the desired file path to save the
test mask file to the internal or external memory. For details, refer to descriptions in
Disk Management
section in
Store and Load
.
13.4 To Set the Output Form of the Test Results
In Option, you can set what the oscilloscope will execute when test results are
detected according to your needs.
Pass/Fail Test
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Set the output event and Aux output
• Click or tap the Aux Output on/off switch to enable or disable the Aux output.
When enabled, in the Utility menu, the sub-menu AUX Out is automatically set
to "PassFail". When a successful or failed event is detected, a pulse will be output
from the rear-panel [AUX OUT] connector. If disabled, the sub-menu AUX Out in
the Utility menu is automatically set to "TrigOut", and the output of the [AUX
OUT] connector is irrelevant with the pass/fail test.
• Select "Pass" or "Fail" in Output Event. When a "pass" or "fail" event is detected,
a pulse will be output from the rear-panel [AUX OUT] connector.
Set the output polarity and output pulse width
Select "Positive" or "Negative" in Polarity, then click or tap the input field of Pulse to
set the pulse width with the pop-up numeric keypad. You can also use the
corresponding multipurpose knob to set the value. Its range is from 100 ns to 10 ms.
By default, it is 1 μs.
Set the error action
In Err Action, select one operation that the oscilloscope will execute once a pass/fail
test is detected.
• Stop: stop sampling when a failed event is found.
• Beeper: the beeper sounds an alarm when a failed event is found (irrelevant with
the on/off status of the beeper).
• Screenshot: perform the screenshot operation when a failed event is found. If an
external storage device is detected, the screenshot will be saved to the external
storage device directly. Otherwise, it will be saved to the local disk.
If "Screenshot" is selected, "Stop" action will be executed forcibly. The sampling
stops automatically. After the screenshot operation is completed, the sampling
will continue.
13.5 To Start or Stop the Pass/Fail Test Operation
After the Pass/Fail test function is enabled, click or tap the Operate button
to start the test operation or to stop the operation.
During the test process, the oscilloscope will test the waveforms, display the test
information, and output the test information based on the current settings. The
"Pass/Fail" result will be displayed in the "Result" bar at the right side of the screen,
as shown in the figure below.
Pass/Fail Test
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Figure 13.2 Pass/Fail Test Interface
TIP
• Only when the pass/fail test function is enabled, can you start or stop the pass/fail test
operation, save and recall the test mask range.
• After starting the test operation, you can neither modify the source channel nor adjust
the test mask.
13.6 To Display the Statistics of the Test Results
After the "Pass/Fail" function is enabled, the test results will be displayed in the
"Result" bar at the right side of the screen. You can click or tap the icon
at the
lower-right corner of the screen to hide the "Result" sidebar.
The test results statistics include the number of failed frames, the number of
successful frames, and total number of frames, as shown in the figure below.
Click or tap the "Pass/Fail" label and a window is displayed for you to perform the
following operations.
• Click or tap
Reset Stat., then the statistics in the "Pass/Fail" label will be reset to
0.
• Click or tap
Setting, then the PassFail setting menu is displayed.
Pass/Fail Test
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• Click or tap Remove, then the pass/fail function is disabled.
Pass/Fail Test
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14
Protocol Decoding
You can use the protocol analysis to discover errors, debug hardware, and accelerate
development easily, ensuring you to accomplish the projects with high speed and
good quality. Protocol decoding is the basis of protocol analysis. Only protocol
analyses with correct protocol decoding are acceptable, and only correct protocol
decoding can identify more error information. This oscilloscope provides four bus
decoding modules (Decode 1, Decode 2, Decode 3, and Decode 4) to make common
protocol decoding for the input signals of the analog channels. It provides standard
serial decodes including Parallel, RS232/UART, I2C, SPI, LIN, and CAN. As the
decoding functions and setting methods of Decode1, Decode2, Decode3, and
Decode4 are the same, this chapter takes Decode1 as an example for illustration.
• Click or tap > Decode to enter the "Decode" menu.
• Click or tap the Decode button on the toolbar to enter the "Decode" menu.
14.1 Parallel Decoding
Parallel bus consists of clock line and data line. As shown in the figure below, CLK is
the clock line, whereas Bit0 and Bit1 are the 0 bit and 1st bit on the data line
respectively. The oscilloscope will sample the channel data on the rising edge, falling
edge, or the rising/falling edge of the clock and judge each data point (logic "1" or
logic "0") according to the preset threshold level.
CLK
Bit0
Bit1
Parallel[BIN] 11 10
10
10 00
Figure 14.1 Schematic Diagram of Parallel Decoding
In the
Decode menu, click or tap the drop-down button of Bus Type to select
Parallel, then configure the parameters for Parallel decoding.
Protocol Decoding
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Figure 14.2 Parallel Decoding Menu
Bus Status
Click or tap the Bus Status on/off switch to enable or disable the bus decoding.
14.1.1 Clock Setting (CLK)
Clock Setting (CLK)
Click or tap the drop-down button of CLK to select the desired source of the clock
channel (CH1-CH4). If "OFF" is selected, no clock channel is set, and sampling is
performed when a hop occurs to the data of the data channel during decoding.
Threshold
When the clock signal is an analog channel (CH1-CH4), you need to set a threshold.
Click or tap the input field of Threshold, and then use the pop-up numeric keypad to
set the threshold. You can also use the corresponding multipurpose knob to set the
value. The range of the threshold is related to the current vertical scale and offset.
CLK Edge
When the clock channel is set to an analog channel (CH1-CH4), you can select
"Rising", "Falling", or "Both" in CLK Edge.
• Rising: samples the channel data on the rising edge of the clock.
• Falling: samples the channel data on the falling edge of the clock.
• Both: samples the channel data on the rising edge or the falling edge of the
clock.
Protocol Decoding
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14.1.2 Bus Setting
Set the Bus
Click or tap drop-down button of BUS to select the digital bus (CH1-CH4) for Parallel
decoding. You can also self-define the bus.
Table 14.1 Bus Setting
Bus Width Bit X Channel Remarks
CH1 1 0 CH1
Width, Bit X, and CH are
set automatically, and you
cannot modify them.
CH2 1 0 CH2
Width, Bit X, and CH are
set automatically, and you
cannot modify them.
CH3 1 0 CH3
Width, Bit X, and CH are
set automatically, and you
cannot modify them.
CH4 1 0 CH4
Width, Bit X, and CH are
set automatically, and you
cannot modify them.
User 1 (Default) to 4 0 (Default) CH1~CH4 -
Set the Threshold Level
To judge logic "1" and logic "0" of the buses, you need to set a threshold for each
analog channel (CH1~CH4). When the channel signal amplitude is greater than the
preset threshold, it is judged as logic "1"; otherwise logic "0".
Click or tap the input field of Threshold, and then use the pop-up numeric keypad to
set the threshold. You can also use the corresponding multipurpose knob to set the
value. The range of the threshold is related to the current vertical scale and offset.
Endian
In Endian, select "Invert" or "Normal" as the endian of the bus.
Polarity
In
Polarity, select "Positive" or "Negative" as the data polarity.
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14.1.3 Display-related Settings
In Decode menu, set the following display-related parameters.
Set the Display Format
Click or tap the drop-down button of Format to select the display format of the bus
data and event table. The available options include "Hex", "Dec", "Bin", and "ASCII".
Set the Label Display
Click or tap the Label on/off switch to enable or disable the label display of the
decoding bus. When enabled, the bus label will be displayed at the upper-left side of
the bus (when the bus display is enabled). The label shows the current bus type.
14.1.4 Event Table
The event table displays the decoded data and the corresponding decoding
information in time order in the form of a table. It can be used to observe relatively
longer decoded data. The decoding information includes the decoded data, the
corresponding line number, and time information.
Open or Close the Event Table
Click or tap the Event Table on/off switch to enable or disable the display of the
event table. When enabled, the event table is displayed as shown in the figure below.
You can also click or tap the icon at the upper-right corner of the table to close
the event table.
Figure 14.3 Parallel Decoding Event Table
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TIP
• When you adjust the horizontal time base, the waveform displayed on the screen will also
change, and the total number of lines containing the decoding information in the event
table will also be changed.
• The displayed decoded data information in the bus is related to the value of the
horizontal time base. Reducing the horizontal time base can help you view the detailed
information.
Export
When the oscilloscope is in "STOP" state, you can export the time and its
corresponding decoded data in the event table.
In Decode menu, click or tap Export, then the save setting interface is displayed. You
can export the data to the internal memory or the external USB storage device (only
when detected) in *.csv format. For details, refer to
Store and Load
.
14.2 RS232 Decoding
RS232 serial bus consists of the transmitting data line (TX) and the receiving data line
(RX).
Figure 14.4 Schematic Diagram of RS232 Serial Bus
In RS232, baud rate is used to represent the transmission rate (namely bits per
second) of the data. You need to set the start bit, data bits, check bit (optional), and
stop bits for each frame of data.
• Start Bit: indicates when to output data.
• Data Bit: indicates the number of data bits actually contained in each frame of
data.
• Check Bit: used to check whether the data are properly transmitted.
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• Stop Bit: indicates when to stop outputting data.
In the Decode menu, click or tap the drop-down button of Bus Type to select RS232,
then configure the parameters for RS232 decoding.
Figure 14.5 RS232 Decoding Menu
Bus Status
Click or tap the Bus Status on/off switch to enable or disable the bus decoding.
Quickly Apply Trigger Settings to Decoding
Copy trig indicates applying the trigger settings to the specified decoding setting.
Click or tap
Copy Trig to apply the trigger settings to the specified decoding setting.
14.2.1 Source Setting
Set the Tx source and the threshold
Click or tap drop-down button of Tx to select the desired source. The options include
CH1-CH4 and OFF.
When the source is set to CH1-CH4, you can click or tap the input field of Threshold,
and then use the pop-up numeric keypad to set the threshold of Tx source. You can
also use the corresponding multipurpose knob to set the value. The range of the
threshold is related to the current vertical scale and offset.
When you modify the threshold of the Tx source channel, a dotted line displaying the
current threshold level is displayed on the screen. It disappears in about 2 s after you
stop modifying the threshold.
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Set the Rx source and the threshold
Use the same method to select the Rx source and set the threshold. The default state
of Rx is OFF.
TIP
The sources of
Tx and Rx cannot be set to OFF at the same time.
Polarity
Click or tap "Positive" or "Negative" in
Polarity.
• Positive: High level is logic "1" and low level is logic "0".
• Negative: High level is logic "0" and low level is logic "1".
Set the baud rate
Click or tap the drop-down button of Baud to select the baud rate. The available
baud rates include 50 bps, 75 bps, 110 bps, 134 bps, 150 bps, and etc.
The oscilloscope allows you to self-define the baud rate. Click or tap the drop-down
button of
Baud to select "User" and then set the baud rate with the pop-up numeric
keypad.
14.2.2 To Set Data Package
Data
Click or tap the drop-down button of Data to select the data bits. The available data
bits are 5 bits, 6 bits, 7 bits, 8 bits, and 9 bits.
Parity
It is used to check whether the data transmission is correct. Click or tap the drop-
down button of Parity to select the desired parity mode.
• None: indicates that no check bit appears during the transmission.
• Even: indicates that the total number of "1" in the data bit and check bit is an
even number. For example, when 0x55 (01010101) is sent, "0" should be added
to the check bit.
• Odd: indicates that the total number of "1" in the data bit and check bit is an
odd number. For example, when 0x55 (01010101) is sent, "1" should be added to
the check bit.
Stop Bit
Click or tap the drop-down button of Stop Bit to set the stop bits after each frame of
data. It can be set to 1 bit, 1.5 bits, or 2 bits.
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Endian
Click or tap the drop-down button of Endian to select the desired endian.
• LSB: indicates Least Significant Bit transmission sequence, i.e. the lowest bit of
the data is transmitted first.
• MSB: indicates Most Significant Bit transmission sequence, i.e. the highest bit of
the data is transmitted first.
bit0
bit1
bit2
bit3
bit4
bit5
bit6
bit7
bit7
bit6
bit5
bit4
bit3
bit2
bit1
bit0
t
t
LSB MSB
14.2.3 Display-related Settings
In Decode menu, set the following display-related parameters.
Set the Display Format
Click or tap the drop-down button of Format to select the display format of the bus
data and event table. The available options include "Hex", "Dec", "Bin", and "ASCII".
Set the Label Display
Click or tap the Label on/off switch to enable or disable the label display of the
decoding bus. When enabled, the bus label will be displayed at the upper-left side of
the bus (when the bus display is enabled). The label shows the current bus type.
14.2.4 Event Table
Click or tap the Event Table on/off switch to enable or disable the display of the
event table. When enabled, the event table is displayed as shown in the figure below.
You can also click or tap the icon at the upper-right corner of the table to close
the event table.
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Figure 14.6 RS232 Decoding Event Table
TIP
• When you adjust the horizontal time base, the waveform displayed on the screen will also
change, and the total number of lines containing the decoding information in the event
table will also be changed.
• The displayed decoded data information in the bus is related to the value of the
horizontal time base. Reducing the horizontal time base can help you view the detailed
information.
Export
When the oscilloscope is in "STOP" state, you can export the time and its
corresponding decoded data in the event table.
In Decode menu, click or tap Export, then the save setting interface is displayed. You
can export the data to the internal memory or the external USB storage device (only
when detected) in *.csv format. For details, refer to
Store and Load
.
14.3 I2C Decoding
I2C serial bus consists of the clock line (SCL) and the data line (SDA).
SCL: samples SDA on the rising or falling edge of the clock.
SDA: indicates the data channel.
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SCL
SDA
Figure 14.7 I2C Serial Bus
In the Decode menu, click or tap the drop-down button of Bus Type to select I2C,
then configure the parameters for I2C decoding.
Figure 14.8 I2C Decoding Menu
Bus Status
Click or tap the Bus Status on/off switch to enable or disable the bus decoding.
Quickly Apply Trigger Settings to Decoding
Copy trig indicates applying the trigger settings to the specified decoding setting.
Click or tap Copy Trig to apply the trigger settings to the specified decoding setting.
14.3.1 Source Setting
Set the clock channel source and the threshold
• Click or tap the drop-down button of CLK to select the desired source of the
clock channel (CH1-CH4).
• Click or tap the input field of SCL Thre, and then use the pop-up numeric
keypad to set the threshold of the clock channel. You can also use the
corresponding multipurpose knob to set the value.
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When you modify the threshold of the clock channel, a dotted line displaying the
current threshold level is displayed on the screen. It disappears in about 2 s after
you stop modifying the threshold.
Set the data channel source and the threshold
• Click or tap the drop-down button of SDA to select the desired source of the
data channel (CH1-CH4).
• Click or tap the input field of SDA Thre, and then use the pop-up numeric
keypad to set the threshold of the data channel. You can also use the
corresponding multipurpose knob to set the value.
Exchange sources
Select "SCL/SDA" or "SDA/SCL" in Exchange to exchange the sources of the current
clock channel and data channel.
Specify whether the address information includes the "R/W" bit
For I2C bus, each frame of data starts with the address information (read address and
write address).
Select "Without" or "With" in R/W to decide whether the address information
includes the "R/W" bit. When "With" is selected, the "R/W" bit will be included in the
address information; when "Without" is selected, the "R/W" bit will not be included
in the address information.
14.3.2 Display-related Settings
In Decode menu, set the following display-related parameters.
Set the Display Format
Click or tap the drop-down button of Format to select the display format of the bus
data and event table. The available options include "Hex", "Dec", "Bin", and "ASCII".
Set the Label Display
Click or tap the Label on/off switch to enable or disable the label display of the
decoding bus. When enabled, the bus label will be displayed at the upper-left side of
the bus (when the bus display is enabled). The label shows the current bus type.
14.3.3 Event Table
Open or Close the Event Table
Click or tap the Event Table on/off switch to enable or disable the display of the
event table. When enabled, the event table is displayed as shown in the figure below.
You can also click or tap the icon at the upper-right corner of the table to close
the event table.
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Figure 14.9 I2C Decoding Event Table
TIP
• When you adjust the horizontal time base, the waveform displayed on the screen will also
change, and the total number of lines containing the decoding information in the event
table will also be changed.
• The displayed decoded data information in the bus is related to the value of the
horizontal time base. Reducing the horizontal time base can help you view the detailed
information.
Export
When the oscilloscope is in "STOP" state, you can export the time and its
corresponding decoded data in the event table.
In Decode menu, click or tap Export, then the save setting interface is displayed. You
can export the data to the internal memory or the external USB storage device (only
when detected) in *.csv format. For details, refer to
Store and Load
.
Address information in decoding
For I2C bus, each frame of data starts with the address information (read address and
write address). In the address information, "Read" indicates the read address
(
) and "Write" indicates the write address ( ). You can decide
whether to include or exclude the "R/W" bit for the address information.
Error expressions in decoding
In I2C decoding, the response includes ACK (acknowledgment) and NACK (non-
acknowledgment). When NACK is detected after "Write", red error report information
(
) is displayed.
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14.4 SPI Decoding
SPI bus is based on the master — slave configuration and usually consists of chip
select line (CS), clock line (CLK), and data line (SDA). Wherein, the data lines include
the master input/slave output (MISO) data line and master output/slave input (MOSI)
data line. The oscilloscope samples the channel data on the rising or falling edge of
the clock signal and judge each data point (logic "1" or logic "0") according to the
preset threshold level.
Master
Slave
MOSI
CLK
MISO
CS
CLK
SDA
(MISO/MOSI)
Figure 14.10 SPI Serial Bus
In the Decode menu, click or tap the drop-down button of Bus Type to select SPI,
then configure the parameters for SPI decoding.
Figure 14.11 SPI Decoding Menu
Bus Status
Click or tap the Bus Status on/off switch to enable or disable the bus decoding.
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Quickly Apply Trigger Settings to Decoding
Copy trig indicates applying the trigger settings to the specified decoding setting.
Click or tap Copy Trig to apply the trigger settings to the specified decoding setting.
14.4.1 To Set the Source
Set the Clock Signal
• Click or tap the drop-down button of CLK to select the desired source of the
clock channel. The sources include CH1-CH4.
• Click or tap the input field of Threshold at the right side of the CLK menu, and
then use the pop-up numeric keypad to set the threshold of the clock channel.
You can also use the corresponding multipurpose knob to set the value.
• Click or tap "Rising" or "Falling" in Slope to set the instrument to sample MISO
and MOSI on the CLK edge.
MISO and MOSI Setting
• Click or tap the drop-down button of MISO to select the desired source of MISO.
The options include CH1-CH4 and OFF.
• When the MISO source is set to CH1-CH4, you can click or tap the input field of
Threshold at the right side of MISO, and then use the pop-up numeric keypad
to set the threshold of the MISO channel. You can also use the corresponding
multipurpose knob to set the value.
• Click or tap the drop-down button of MOSI to select the desired source of MOSI.
The options include CH1-CH4 and OFF.
• When the MOSI source is set to CH1-CH4, you can click or tap the input field of
Threshold at the right side of MOSI, and then use the pop-up numeric keypad
to set the threshold of the MOSI channel. You can also use the corresponding
multipurpose knob to set the value.
TIP
The MISO and MOSI sources cannot be set to "OFF" at the same time.
14.4.2 To Set Mode and Data
Mode
Select "Timeout" or "CS" in Mode.
• Timeout:
You can perform frame synchronization according to the timeout, and the
timeout value must be greater than half of the clock cycle. Click or tap the input
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field of Timeout, and then use the pop-up numeric keypad to set the timeout
value. You can also use the corresponding multipurpose knob to set the value.
The adjustable range of the timeout value is from 8 ns to 10 s. By default, it is 1
μs.
• CS:
It contains a chip select line (CS). You can perform frame synchronization
according to CS. When "CS" is selected,
- Click or tap drop-down button of CS to select the desired source. The
sources include CH1-CH4.
- Click or tap the input field of the Threshold to set the threshold with the
pop-up numeric keypad. You can also use the corresponding multipurpose
knob to set the value.
- In CS Polarity, select "Positive" or "Negative".
Endian
Click or tap the drop-down button of Endian to select the desired endian.
• LSB: indicates Least Significant Bit transmission sequence, i.e. the lowest bit of
the data is transmitted first.
• MSB: indicates Most Significant Bit transmission sequence, i.e. the highest bit of
the data is transmitted first.
bit0
bit1
bit2
bit3
bit4
bit5
bit6
bit7
bit7
bit6
bit5
bit4
bit3
bit2
bit1
bit0
t
t
LSB MSB
Polarity
In
Polarity, select "Positive" or "Negative".
Width Setting
Click or tap the input field of Width, and then use the pop-up numeric keypad to set
the bits of each frame of data. You can also use the corresponding multipurpose knob
to set the value. The setting range is from 4 to 32. By default, it is 8.
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14.4.3 Display-related Settings
In Decode menu, set the following display-related parameters.
Set the Display Format
Click or tap the drop-down button of Format to select the display format of the bus
data and event table. The available options include "Hex", "Dec", "Bin", and "ASCII".
Set the Label Display
Click or tap the Label on/off switch to enable or disable the label display of the
decoding bus. When enabled, the bus label will be displayed at the upper-left side of
the bus (when the bus display is enabled). The label shows the current bus type.
14.4.4 Event Table
Open or Close the Event Table
Click or tap the Event Table on/off switch to enable or disable the display of the
event table. When enabled, the event table is displayed as shown in the figure below.
You can also click or tap the icon at the upper-right corner of the table to close
the event table.
Figure 14.12 SPI Decoding Event Table
TIP
• When you adjust the horizontal time base, the waveform displayed on the screen will also
change, and the total number of lines containing the decoding information in the event
table will also be changed.
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• The displayed decoded data information in the bus is related to the value of the
horizontal time base. Reducing the horizontal time base can help you view the detailed
information.
Export
When the oscilloscope is in "STOP" state, you can export the time and its
corresponding decoded data in the event table.
In Decode menu, click or tap
Export, then the save setting interface is displayed. You
can export the data to the internal memory or the external USB storage device (only
when detected) in *.csv format. For details, refer to
Store and Load
.
14.5 CAN Decoding
The oscilloscope samples the CAN signal at the specified sample position, and judges
each data point to be logic "1" or logic "0" according to the preset threshold level.
You need to specify the CAN signal type and sample position.
In the Decode menu, click or tap the drop-down button of Bus Type to select CAN,
then configure the parameters for CAN decoding.
Figure 14.13 CAN Decoding Menu
Bus Status
Click or tap the Bus Status on/off switch to enable or disable the bus decoding.
Quickly Apply Trigger Settings to Decoding
Copy trig indicates applying the trigger settings to the specified decoding setting.
Click or tap
Copy Trig to apply the trigger settings to the specified decoding setting.
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14.5.1 Signal Configuration
Set the source and the threshold
• Click or tap drop-down button of Source to select the desired source. The
sources include CH1-CH4.
• Click or tap the input field of Threshold, and then use the pop-up numeric
keypad to set the threshold of the source channel. You can also use the
corresponding multipurpose knob to set the value.
When you modify the threshold of the signal source, a dotted line displaying the
current threshold level is displayed on the screen. It disappears in about 2 s after
you stop modifying the threshold.
Select the Signal Type
Click or tap the drop-down button of Signal to select a signal type that matches the
CAN bus signal. The available signal types include CAN_H, CAN_L, Rx, Tx, and Diff.
• CAN_H: indicates the actual CAN_H bus signal.
• CAN_L: indicates the actual CAN_L bus signal.
• Rx: indicates the Receive signal from the CAN bus transceiver.
• Tx: indicates the Transmit signal from the CAN bus transceiver.
• DIFF: The CAN differential bus signals connected to an analog source channel by
using a differential probe. Connect the probe's positive lead to the CAN_H bus
signal and connect the negative lead to the CAN_L bus signal.
Specify the Standard Signal Rate
Click or tap the drop-down button of Baud to select the preset baud rate. The
available baud rates include 10.0 kbps, 19.2 kbps, 20.0 kbps, 33.3 kbps and etc.
Sample Position
Sample position is a point within a bit's time. The oscilloscope samples the bit level at
this point. The sample position is represented by the proportion of "the time from the
start of the bit to the sample point" to the "bit time", as shown in the figure below.
One Bit
60%
70%
80%
Figure 14.14 Sample Position
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Click or tap the input field of Sample Position to set it by using the pop-up numeric
keypad. You can also use the corresponding multipurpose knob to set the value. The
settable range is from 10% to 90%.
14.5.2 Display-related Settings
In Decode menu, set the following display-related parameters.
Set the Display Format
Click or tap the drop-down button of Format to select the display format of the bus
data and event table. The available options include "Hex", "Dec", "Bin", and "ASCII".
Set the Label Display
Click or tap the Label on/off switch to enable or disable the label display of the
decoding bus. When enabled, the bus label will be displayed at the upper-left side of
the bus (when the bus display is enabled). The label shows the current bus type.
14.5.3 Event Table
Open or Close the Event Table
Click or tap the Event Table on/off switch to enable or disable the display of the
event table. When enabled, the event table is displayed as shown in the figure below.
You can also click or tap the icon at the upper-right corner of the table to close
the event table.
Figure 14.15 CAN Decoding Event Table
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TIP
• When you adjust the horizontal time base, the waveform displayed on the screen will also
change, and the total number of lines containing the decoding information in the event
table will also be changed.
• The displayed decoded data information in the bus is related to the value of the
horizontal time base. Reducing the horizontal time base can help you view the detailed
information.
Export
When the oscilloscope is in "STOP" state, you can export the time and its
corresponding decoded data in the event table.
In Decode menu, click or tap Export, then the save setting interface is displayed. You
can export the data to the internal memory or the external USB storage device (only
when detected) in *.csv format. For details, refer to
Store and Load
.
Interpret the Decoded CAN Data
• Frame ID: expressed in Hex, identified as "ID:".
• DLC (Data Length Code): expressed in Hex, identified as "DLC:".
• Data: Its display format is the same as that of the bus data (Hex, Dec, Bin, or
ASCII), identified as "Data:".
• CRC (Cyclic Redundancy Check): expressed in Hex, identified as "CRC:".
• ACK (Acknowledgement): identified as "ACK". When errors (ACK is detected to
be 1) occur, displayed as a red patch.
• R (remote frame): identified as "R:".
• Stuff (Bit filling error): identified as "Stuff".
14.6 LIN Decoding
The oscilloscope samples the LIN signal, and judges each data point to be logic "1" or
logic "0" according to the preset threshold level. The LIN decoding is required to
specify the LIN signal protocol version.
In the Decode menu, click or tap the drop-down button of Bus Type to select LIN,
then configure the parameters for LIN decoding.
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Figure 14.16 LIN Decoding Menu
Bus Status
Click or tap the Bus Status on/off switch to enable or disable the bus decoding.
Quickly Apply Trigger Settings to Decoding
Copy trig indicates applying the trigger settings to the specified decoding setting.
Click or tap Copy Trig to apply the trigger settings to the specified decoding setting.
14.6.1 Signal Configuration
Set the source and the threshold
• Click or tap drop-down button of Source to select the desired source. The
sources include CH1-CH4.
• Click or tap the input field of Threshold, and then use the pop-up numeric
keypad to set the threshold of the source channel. You can also use the
corresponding multipurpose knob to set the value.
When you modify the threshold of the signal source, a dotted line displaying the
current threshold level is displayed on the screen. It disappears in about 2 s after
you stop modifying the threshold.
Set the Signal
• Click or tap the drop-down button of Baud Rate to select the baud rate. The
available baud rates include 2.4 kbps, 4.8 kbps, 9.6 kbps, 10.0 kbps, 19.2 kbps,
and etc. You can also self-define the baud rate.
• In
Parity bit, click or tap "With" or "Without" to select whether the data
contain the parity bit.
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• In Version, select the protocol version that matches the LIN bus signal. The
available versions include "1.X", "2.X", and "Both".
14.6.2 Display-related Settings
In Decode menu, set the following display-related parameters.
Set the Display Format
Click or tap the drop-down button of Format to select the display format of the bus
data and event table. The available options include "Hex", "Dec", "Bin", and "ASCII".
Set the Label Display
Click or tap the Label on/off switch to enable or disable the label display of the
decoding bus. When enabled, the bus label will be displayed at the upper-left side of
the bus (when the bus display is enabled). The label shows the current bus type.
14.6.3 Event Table
Open or Close the Event Table
Click or tap the Event Table on/off switch to enable or disable the display of the
event table. When enabled, the event table is displayed as shown in the figure below.
You can also click or tap the icon at the upper-right corner of the table to close
the event table.
Figure 14.17 LIN Decoding Event Table
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TIP
• When you adjust the horizontal time base, the waveform displayed on the screen will also
change, and the total number of lines containing the decoding information in the event
table will also be changed.
• The displayed decoded data information in the bus is related to the value of the
horizontal time base. Reducing the horizontal time base can help you view the detailed
information.
Export
When the oscilloscope is in "STOP" state, you can export the time and its
corresponding decoded data in the event table.
In Decode menu, click or tap Export, then the save setting interface is displayed. You
can export the data to the internal memory or the external USB storage device (only
when detected) in *.csv format. For details, refer to
Store and Load
.
Interpret the Decoded LIN Data
• Break (Sync Break): expressed in Hex, identified as "Break:".
• SYNC (Sync): expressed in Hex, identified as "SYNC:".
• ID (Frame ID): expressed in Hex, identified as "ID:".
• Data (Data): Its display format is the same as that of the bus data (Hex, Dec, Bin,
or ASCII), identified as "Data:".
• Checksum (check sum): expressed in Hex, identified as "Checksum:". When errors
occur, it is displayed as a red patch.
• Wakeup (wake up symbol): identified as "Wakeup:".
Protocol Decoding
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15
Multi-pane Windowing
This series oscilloscope supports multi-pane windowing. You can add multiple
windows and result display windows for display and view.
Click or tap > Windows to enter the "Add Window" menu. You can also click or
tap the Windows button on the toolbar at the top of the screen to enter the menu, as
shown in the figure below.
Figure 15.1 "Add Window" Menu
Add Diagram Windows
1. First, select "XY" or "Math" in Diagram. When a diagram is selected, its preview
and parameter setting items can be displayed at the upper part of the "Add
Window" menu.
2. You can set the corresponding parameters according to your needs. For details,
refer to descriptions of relevant chapters.
3. Click or tap Add and then the selected diagram is displayed on the screen.
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NOTE
When the waveform view window is closed, the "Waveform View" item appears on the
Diagram menu. You can use the item to open the waveform view window.
Add Result Table Window
Click or tap "Measure", "All Measure", or "Decode" in
Result Table, then click or tap
Add. The corresponding measurement result window will be displayed on the screen.
Multi-pane Windowing
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16
Waveform Recording and Playing
Waveform recording/playing function can play the recorded waveforms, enabling you
to analyze the waveforms better.
You can enter the "Record" menu in the following ways.
• Click or tap the function navigation icon and then select Record to enter the
"Record" menu.
• Click or tap Record on the toolbar to enter the "Record" menu.
• Press the front-panel key and select Record in the pop-up "Analyse"
menu to enter the "Record" menu.
Figure 16.1 "Record" Menu
TIP
When the acquisition mode is set to
UltraAcquire
, the waveform recording/playing function is
not available. You can view waveform segments using
To navigate segments
.
16.1 Common Settings
Waveform Recording
Click or tap the Record on/off switch to enable or disable the waveform recording
function. Before recording the waveform, you can refer to descriptions in
Record
Options
to set the waveform recording parameters.
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• Click or tap the Record button to start recording the waveforms. Then the
record icon turns into from .
• The data at the right side of the record progress bar indicate the current frame/
total frames. During recording, the current recording information is displayed on
the screen in real time with the current frames constantly changing.
• After the recording is completed, turns into and recording stops
automatically.
• During recording, you can also click or tap to suspend the recording
manually.
Waveform Playing
Click or tap the play icon in Play to start playing the recorded waveforms. Then
the play icon turns into from . For details about playing, refer to descriptions
in
Play Options
. During waveform playing, the value in Current changes dynamically.
During playing, you can also click or tap the icon again to suspend playing
manually. ∆T indicates the time interval between the current frame and the first frame
during the recording process.
16.2 Record Options
During the waveform recording, the oscilloscope records the waveforms of the
currently enabled channel at a specified interval until you manually stops the
recording operation or the number of recorded frames has reached the limit
Before recording the waveforms, set the following parameters.
1. Interval
The recording interval indicates the time interval between the frames during the
recording process.
Click or tap the Interval input field and use the pop-up numeric keypad to set the
time interval between frames. You can also use the front-panel multipurpose knob
to set the value. The available range is from 10 ns to 1 s.
2. Frames
The recording frames refer to the number of frames that can be recorded actually.
After starting the recording operation, the oscilloscope stops the recording
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operation automatically when the number of recorded frames reaches the set
value.
Click or tap the Frames input field to set the number of waveform frames to be
recorded currently. You can also use the front-panel multipurpose knob to set the
value. The range available is from 1 to the maximum number of frames that can be
recorded currently.
3. Max Frames
The input field of Max Frames displays the maximum number of frames that can
be recorded currently. Click or tap Max and the frames will be automatically set to
the maximum value.
As the waveform memory is fixed, the more points in each frame, the fewer
waveform frames that can be recorded. Therefore, the maximum number of
recorded frames depends on currently selected "memory depth" (refer to
Memory
Depth
). The number of waveform points per frame is the current memory depth.
Memory Depth ≥ Sample Rate x Horizontal Time Base x Number of Grids in the
Horizontal Direction. Therefore, the Max. value of waveform recording is also
related to the "Sample Rate" and "Horizontal Time Base".
4. Beeper
: the beeper sounds at the end of recording.
: the beeper does not sound at the end of recording.
16.3 Play Options
Waveform playing function can play back the waveforms currently recorded. In Play,
click or tap the Minimize on/off switch to select whether to minimize the menu.
When ON is selected, the window is minimized, making the display more simplified,
easy for observation and operation. The minimized menu is as shown in the figure
below.
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Figure 16.2 Minimized "Play" Menu
Before playing the waveforms, set the following parameters.
1. Play Mode
You can play the waveforms in single mode ( ) or cycle mode ( ).
- : plays from the start frame to the end frame, and then stops automatically.
-
: plays from the start frame to the end frame, then such playback operation
is repeated until you stop it manually.
2. Play Sequence
You can play back the waveforms clockwise ( ) or counterclockwise ( ).
- : plays from the start frame to the end frame.
- : plays from the end frame to the start frame.
3. Interval
The playback interval indicates the time interval between the frames during the
playing process.
Click or tap the input field of Interval, and then use the pop-up numeric keypad to
set the timeout value. You can also use the corresponding multipurpose knob to
set the value. The available range is from 1 ms to 1 s.
4. Start Frame
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Click or tap the "Start Frame" input field in
Figure 16.2
to set the start frame for
playing back the waveforms. You can also use the corresponding multipurpose
knob to set the value. The default is 1, and the maximum value is the maximum
number of frames recorded.
5. End Frame
Click or tap the "End Frame" input field in
Figure 16.2
to set the end frame for
playing back the waveforms. You can also use the corresponding multipurpose
knob to set the value. The default is the number of frames of the recorded
waveforms.
6. Current Frame
When the playing is stopped, click or tap the "Current" input field in
Figure 16.2
to
set the currently displayed frame with the pop-up numeric keypad. You can also
use the corresponding numeric keypad to set the value. The maximum allowed is
the number of recorded frames.
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17
Search and Navigation
The Search function allows you to quick find and mark the event of interest and then
go to the specified event in the marktable by navigating search events. The search
types include edge and pulse.
The Navigation function allows you to quickly view and navigate waveforms. You can
navigate time, search events, and segments.
17.1 Search
This function allows you to search for the specified edge and pulse width trigger
events. Found search events are marked with small inverted triangles ( ) at the top
of the graticule. Click or tap > Search to enter the "Search" menu. You can also
click or tap Search in the "Navigation" menu (only when the navigation mode is set to
"Search Event") to enter the "Search" menu, as shown in the figure below.
Figure 17.1 Search Menu
1.
Search On/Off
Click or tap
Search on /off switch to enable or disable the search function.
TIP
Enabling the search function automatically turns on the
Zoom Mode (Delayed Sweep)
.
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2. To Set up searches
Click or tap the Type drop-down button to select "Edge" or "Pulse". Click or tap
the Source drop-down button to select the source.
- Edge Searches: After setting the search type to "Edge", you can select the slope
type. For details, please refer to
Edge Trigger
. You can click or tap the
Threshold input filed to set the threshold with the pop-up numeric keypad or
use the corresponding multipurpose knob to set the value.
- Pulse Width Searches: After setting the search type to "Pulse", you can set the
trigger condition. For details, please refer to
Pulse Width Trigger
. You can click
or tap the Threshold input filed to set the threshold with the pop-up numeric
keypad or use the corresponding multipurpose knob to set the value.
3. To copy search setups
- Copy to Trigger
Click or tap To Trigger to copy the setup for the selected search type to the
same trigger type. For example, if the current search type is "Edge", clicking or
tapping To Trigger copies the search settings to the "
Edge Trigger
" settings.
- Copy from Trigger
Click or tap From Trigger to copy the trigger setup for the selected search type
to the search setup. For example, if the current trigger type is "
Edge Trigger
",
clicking or tapping From Trigger copies the trigger settings to the "Edge"
search setup.
NOTE
To use the "Copy from Trigger" function, please first set the search type and then copy
the specified trigger setup in the Trigger menu.
4. Marktable On/Off
Click or tap the MarkTable on /off switch to turn on or off the marktable display.
When "ON" is selected, a table is displayed in the interface as shown in the figure
below. The table lists all events of the current waveform in the Waveform View.
Zooming or adjusting the waveform causes the events in the table to change. You
can perform the following operations on the table:
- When acquisitions are stopped (STOP mode), click or tap any row of the table to
select the specified event. The inverted triangle mark of the selected event turns
red like
.
- Click or tap
at the upper-right side of the table to open the search menu.
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- Select the gray title bar of the table to drag the table and move the table
window.
- Click or tap at the upper-right side of the table to close the search menu.
Figure 17.2 MarkTable Display
5. Navigation
Click or tap Navigation to access the navigation menu. You can use the "Search
Event" mode in
Navigation
to navigate through the search events.
6.
To Save search events
You can save the event data to the instrument's internal memory or an external
USB storage device in format of "*.csv".
Click or tap
Save events to access the "Save" menu. For details, please refer to
To
Save a File
.
NOTE
This series only supports the flash memory USB storage device of FAT32 format.
17.2 Navigation
The Navigation function allows you to navigate time, search events, and segments.
You can assess the Navigation menu in the following ways.
• Press the front-panel key to access the menu.
• Click or tap
Navigate on the toolbar at the upper-right of the interface.
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• In the "Search" menu, click or tap Navigation to access the menu.
Figure 17.3 Navigation Menu
The normal Navigation menu is as shown in the figure above. You can click or tap
to minimize the menu (see the figure below) for a simplified interface.
Figure 17.4 Simplified Navigation Menu
TIP
The navigation function is available only when the oscilloscope is in "STOP" state (acquisition
stopped).
To navigate time
It is available only when in "YT" time mode. The menu is as shown in
Figure 17.3
.
When "Time" is selected, click or tap in "Navigation" menu or press the front-
panel key to start/stop playout. During playout, you can click or tap to play
backward or to play forward. The playout automatically stops when it reaches the
left or right edges. When it stops, clicking or tapping / moves the waveform.
Click or tap the Speed drop-down button to select the speed level.
To navigate search events
After searching events using the Search function, you can select the "Search Event"
mode in Navigation menu to navigate to specific events in the marktable. Its setting
menu is as shown in
Figure 17.5
.
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Figure 17.5 "Search Event" Navigation Setting Menu
After "Search Event" is selected, click or tap Search to open the "Search" menu and
set the search condition. For search setup, please refer to
Search
. You can select the
search type from the
Type item. Click or tap to go to the previous search event or
to go to the next search event. Click or tap to go to the first event or to
go to the last event.
To navigate segments
This mode is available only in UltraAcquire acquisition mode. When UltraAcquire is
enabled, the
Mode is automatically set to "Frame Segment" which cannot be
modified. Its setting menu is as shown in
Figure 17.6
.
Figure 17.6 "Frame Segment" Navigation Setting Menu
• In this mode, you can click or tap the Display mode drop-down button to set
the display mode of segments. For details, please refer to
UltraAcquire
.
• Click or tap Start Frame and End Frame input fields to set the start frame and
end frame which define the segment range to navigate through. You can also
use the corresponding multipurpose knob to set the start/end frame. After you
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click or tap the play/stop key, it plays from the "Start Frame" and the number of
frames that can display on each screen page is (End Frame-Start Frame+1).
For example, if you set the start frame to 3 and the end frame to 9, it will play
from the 3rd frame and displays 7 frames at a page.
• Click or tap in the menu or press the front-panel key to start/stop
playing through the frames between the Start Frame and End Frame. During
playout, you can click or tap to play backward or to play forward. The
playout automatically stops when it reaches the left or right edges. When it
stops, you can click or tap / to go forward or backward. You can also click
or tap to go to the first page or to go to the last page. The current
page/total pages is indicated in Current Page.
TIP
During segment playing, you are not allowed to change the start/end frame.
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18
Display Control
In the Display setting menu, you can set the type, persistence time, waveform
intensity, grid type, grid brightness, and etc. Click or tap the function navigation icon
at the lower-left corner of the screen, and then select Display to enter the
"Display" menu. You can also click or tap the
icon at the upper-right of the
Waveform View to enter the "Display" menu.
Figure 18.1 Display Setting Menu
18.1 Display Type
This series oscilloscope provides the "Vector" display mode in which the sample
points are connected by lines and displayed. In most cases, this mode can provide the
most vivid waveform for you to view the steep edge of the waveform (such as square
waveform).
18.2 Persistence Time
In the Display setting menu, click or tap the drop-down button of Persistence Time
to select the persistence time. The available values are Min, specific values (100 ms,
200 ms, 500 ms, 1 s, 2 s, 5 s, 10 s), and Infinite.
Display Control
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In the following part, a frequency sweep signal of the sine waveform is used to show
the waveform effects in different persistence times.
• Min
Enables you to view waveform changing in high refresh rate.
• Specific Values
Enables you to view glitches that change relatively slowly or glitches with lower
occurrence probability. The persistence time can be set to 100 ms, 200 ms, 500
ms, 1 s, 2 s, 5 s, or 10 s.
• Infinite
In this mode, the oscilloscope displays the waveform newly acquired without
clearing the waveforms acquired formerly. The waveforms acquired formerly will
be displayed in relatively low-brightness color and the newly acquired
waveforms will be displayed in normal brightness and color. Infinite persistence
can be used to measure noise and jitter and to capture incidental events.
18.3 Waveform Intensity
In Display menu, drag the slide bar of Wave Intensity to set the brightness of
waveforms. The default is 50%, and the range available is from 1% to 100%.
18.4 To Set the Screen Grid
In the Display menu, select "FULL", "HALF", or "NONE" in Grid.
• FULL: turns the background grid on.
• HALF: turns part of the grid off, leaving only the main grid.
• NONE: turns the background grid off.
18.5 Display Settings
Grid Brightness
In the Display setting menu, drag the slider of Grid Brightness to set the grid
brightness. The default is 50%, and the range available is from 0% to 100%.
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Window Transparency
In the Display setting menu, drag the slider of Window Transparency to set the
window transparency. The default is 50%, and the range available is from 0% to 100%.
Cursor Brightness
In the Display setting menu, drag the slider of Cursor Brightness to set the cursor
brightness. The default is 80%, and the range available is from 0% to 100%.
18.6 Show Scale
In the Display setting menu, click or tap the Show Scale on/off switch to enable or
disable scale display on the screen. By default, it is ON.
18.7 Color Grade
In the Display setting menu, click or tap the Color Grade on/off switch to enable or
disable the color grade display. By default, it is OFF.
When it is enabled, different colors are displayed on the screen to indicate the times
of data acquisition or acquisition probability.
18.8 Waveform Freeze
In the Display setting menu, click or tap the Waveform Freeze on/off switch to
enable or disable the waveform freeze function. By default, it is ON.
When the function is enabled, the oscilloscope displays the waveform after multiple
sampling and superposition when sampling is stopped. You can click or tap the
STOP/RUN button at the upper-right side of the screen or press the front-panel
key to stop sampling. If this function is disabled, the last triggered waveform is
displayed.
Display Control
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19
Store and Load
You can save the current setups, waveforms, screen image, and parameters of the
oscilloscope to the internal memory or external USB storage device (such as USB
storage device) in various formats and recall the stored setups or waveforms when
necessary. You can also load the upgrade software to the system and perform the
upgrade operation for the instrument.
You can also copy, delete, or rename the specified type of file from the internal
memory or external USB storage device via the disk management menu.
This oscilloscope provides two USB HOST interfaces on the front panel, which can all
be connected to the USB storage device for external storage. The USB storage devices
connected are marked as "Removable USB Disk (D)" and "Removable USB Disk (E)".
TIP
This oscilloscope only supports the flash memory USB storage device of FAT32 format.
19.1 To Enter the Storage Menu
You can enter the storage setting menu in the following ways.
• Click or tap the function navigation icon at the lower-left corner of the
screen, and then select Storage to enter the storage setting menu.
• Click or tap the Storage button on the toolbar to enter the storage setting
menu.
In the Storage setting menu, there are three sub-menus (Save, Load, and Upgrade)
for you to choose. Select the specified sub-menu and configure the corresponding
parameters.
19.2 To Save a File
In the Storage menu, click or tap the Save tab to enter the save setting menu. In this
menu, you can save the image, waveform, or setup files.
19.2.1 Save Image
In the Storage menu, click or tap the Save tab to enter the save operation menu. In
this menu, click or tap the drop-down button of Choose to select "Save Image" to
enter the "Save Image" setting menu. Set the relevant parameters and save the image
to the internal or external memory.
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Figure 19.1 Image Saving Setting Menu
Set the image format
• Format
Click or tap the drop-down button of Format to select "*.png", "*.bmp", or
"*.jpg". Then the screen image will be saved to the internal or external memory
in the selected format.
• Invert
Click or tap the Invert on/off switch to turn on/off inverting image colors.
• Color
Click or tap the Color toggle button to select "Color" or "Gray" images.
• Header
Click or tap the Header on/off switch to enable or disable the display of the
header. If you select "ON", the instrument model and the image creation date
will be displayed in the header of the image when you save the image file.
Set the file saving parameters
• Set the filename
Click or tap the input field of
File Name to input the file name to be saved with
the pop-up virtual keypad.
• Set the file path
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Click or tap the input field of File Path, then the disk management interface is
displayed. Select the target directory and then click or tap OK to set the file path.
For detailed operations, refer to descriptions in
Disk Management
.
When a USB device is not connected, the default file path is the "Local Disk";
when a USB device is detected, the path is automatically set to "D:".
• Overlay
Click or tap the Overlay on/off switch to enable or disable the overwriting
function. When this function is enabled, the existing file in the specified file path
will be overwritten by the newly saved file that has the same filename as the
existing one.
Click or tap Save, the current screen image is saved based on the settings and the
storage menu is disabled.
TIP
When the quick action function is set to "Save Image" or "Save Group" with "Save Image"
selected, you can press the front-panel
key to save the image.
19.2.2 Save Wave
In the Storage menu, click or tap the Save tab to enter the save operation menu. In
this menu, click or tap the drop-down button of Choose to select "Save Wave" to
enter the "Save Wave" setting menu. The main settings (e.g. channel on/off state,
vertical scale, and horizontal time base) and waveform data of all enabled channel will
be saved to the internal or external memory.
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Figure 19.2 Waveform Saving Setting Menu
Set the source of the waveform data and the format of the saved waveform
• Data source
Click or tap the drop-down button of Data Source to select "Screen" or
"Memory".
• Waveform format
Click or tap the drop-down button of Format to select the format of the saved
waveform. When the data source is set to "Screen", the format can be set to
"*.bin" or "*.csv"; when the data source is set to "Memory", the format can be
set to "*.bin", "*.csv", or "*.wfm".
Set the file saving parameters
• Set the filename
Click or tap the input field of
File Name to input the file name to be saved with
the pop-up virtual keypad.
• Set the file path
Click or tap the input field of File Path, then the disk management interface is
displayed. Select the target directory and then click or tap OK to set the file path.
For detailed operations, refer to descriptions in
Disk Management
.
When a USB device is not connected, the default file path is the "Local Disk";
when a USB device is detected, the path is automatically set to "D:".
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• Overlay
Click or tap the Overlay on/off switch to enable or disable the overwriting
function. When this function is enabled, the existing file in the specified file path
will be overwritten by the newly saved file that has the same filename as the
existing one.
Click or tap Save, the current waveform file is saved based on the settings and the
storage menu is disabled.
TIP
When the quick action function is set to "Save Wave" or "Save Group" with "Save Wave"
selected, you can press the front-panel
key to save the waveform.
19.2.3 Save Setup
In the Storage menu, click or tap the Save tab to enter the save operation menu. In
this menu, click or tap the drop-down button of Choose to select "Save Setup" to
enter the "Save Setup" setting menu. Save the settings of the oscilloscope to the
internal or external memory in "*.stp" format. When loading, the stored settings can
be recalled.
Figure 19.3 Setup Saving Setting Menu
Set the file saving parameters
• Set the filename
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Click or tap the input field of File Name to input the file name to be saved with
the pop-up virtual keypad.
• Set the file path
Click or tap the input field of File Path, then the disk management interface is
displayed. Select the target file path and then click or tap OK. For detailed
operations, refer to descriptions in
Disk Management
.
When a USB device is not connected, the default file path is the "Local Disk";
when a USB device is detected, the path is automatically set to "D:".
• Overlay
Click or tap the Overlay on/off switch to enable or disable the overwriting
function. When this function is enabled, the existing file in the specified file path
will be overwritten by the newly saved file that has the same filename as the
existing one.
Click or tap Save, the current setup file is saved based on the settings and the storage
menu is disabled.
TIP
When the quick action function is set to "Save Setup" or "Save Group" with "Save Setup"
selected, you can press the front-panel
key to save the setup.
19.2.4 Binary Data Format (.bin)
Binary data format stores waveform data in binary format and provides data headers
that describe these data. As data are displayed in binary format, its file size is much
more smaller than that in ASCII format. If several channels are enabled, then all the
displayed channels will be saved (save the first channel then save the second, and
then it goes on like this until all the displayed channels are saved).
Table 19.1 BIN File Format
File
Header
Waveform
Header
Waveform
Data
Header
Channel
Data
Waveform
Header
Waveform
Data
Header
Channel
Data
16 Bytes 140 Bytes 16 Bytes n Bytes 140 Bytes 16 Bytes n Bytes
In BIN file format, it contains the following channel data:
• CH1 Data
• CH2 Data
• CH3 Data
• CH4 Data
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• Math Waveform Data
Binary Header Format
1. File Header
There is only one file header in a binary file. The file header contains the following
information.
Table 19.2 File Header
Cookie
Two-byte characters, RG, indicating that the file is the RIGOL
binary data file format.
Version Two-byte, indicating the file version.
File Size
An 8-byte long integer, indicating the number of bytes in the
file. It includes the header.
Number of
Waveforms
A 4-byte integer, indicating the number of waveforms that are
stored in the file.
2. Waveform Header
It is possible to store several waveforms in the file. Each stored waveform has a
waveform header. When several channels are stored, each channel can be
considered as a separate waveform. The waveform header contains the
information about the type of waveform data that are stored following the
waveform data header.
Table 19.3 Waveform Header
Header Size A 4-byte integer, indicating the number of bytes in the header.
Waveform Type
A 4-byte integer, indicating the type of the waveform stored in
the file. It is fixed to 1.
- 0 = Unknown
- 1 = Normal
- 2 = Peak Detection
- 3 = Average
- 4 = Not Used
- 5 = Not Used
- 6 = Logic
Number of
Waveform Buffers
A 4-byte integer, indicating the number of waveform buffers
required to read the data. It is fixed to 1.
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Number of Points
A 4-byte integer, indicating the number of waveform points in
the data.
Count A 4-byte integer. It is fixed to 0.
X Display Range
A 4-byte float, indicating the X-axis duration of the waveform
that is displayed. For time-domain waveforms, it indicates the
duration of the display. If the value is zero, then no data has
been acquired.
X Display Origin
An 8-byte double-precision floating-point, indicating the X-
axis value at the left edge of the screen. For time-domain
waveforms, it indicates the time at the start of the display. The
value is treated as a double precision 64-bit float point
number. If the value is zero, then no data has been acquired.
X Increment
An 8-byte double-precision floating-point, indicating the
duration between data points on the X-axis. For time-domain
waveforms, it indicates the time between points. If the value is
zero, then no data has been acquired.
X Origin
An 8-byte double-precision floating-point, indicating the X-
axis value of the first data point in the data recording. For
time-domain waveforms, it indicates the time of the first
point. The value is treated as a double precision 64-bit float
point number. If the value is zero, then no data has been
acquired.
X Units
A 4-byte integer, indicating the unit of measurement for X
values in the acquired data. It is fixed to 2.
- 0 = Unknown
- 1 = Volts (V)
- 2 = Seconds (s)
- 3 = Constant
- 4 = Amps (A)
- 5 = Decibel (dB)
- 6 = Hertz (Hz)
Y Units
A 4-byte integer, indicating the unit of measurement for Y
values in the acquired data. The possible values are listed
above under X Units.
Date
A 16-byte character array, indicating the date when the file is
saved.
Time
A 16-byte character array, indicating the time when the file is
saved.
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Model
A 24-byte character array in the format of MODEL#:SERIAL#,
indicating the oscilloscope's model and serial number.
Channel Name
A 16-byte character array that contains the label assigned to
the waveform.
3. Waveform Data Header
A waveform may have multiple data sets. Each waveform data set has a waveform
data header. The waveform data header consists of information about the
waveform data set. The header is stored before the data set.
Table 19.4 Waveform Data Header
Header Size
A 4-byte integer, indicating the number of bytes in the
waveform data header.
Buffer Type
A 2-byte integer, indicating the type of the waveform data
stored in the file.
- 0 = Unknown
- 1 = Normal 32-bit float data
- 2 = Maximum float data
- 3 = Minimum float data
- 4 = Not Used
- 5 = Digital unsigned 8-bit character data (for digital
channels)
Bytes Per Point
A 2-byte short integer, indicating the number of bytes per
data point.
Buffer Size
An 8-byte long integer, indicating the number of bytes of the
current channel waveform data.
19.3 Load a File
In the storage setting menu, click or tap the Load tab to switch to the load menu. In
this menu, you can load the local file to the instrument.
Store and Load
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Figure 19.4 Load Setting Menu
Load Setup
Click or tap the drop-down button of Choose to select "Load Setup". Then, click or
tap File Path to load the setups from the internal memory or the external USB disk.
The default file type is "*.stp", and no other options are available. Select the file to be
loaded from the memory. Click or tap Load to load the selected file.
19.4 Firmware Upgrade
This instrument supports local upgrade and online upgrade.
Local upgrade
1. In the storage setting menu, click or tap Upgrade to enter the local upgrade
setting menu.
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Figure 19.5 Upgrade Menu
2. Click or tap the input field of File Path, then the disk management interface is
displayed. Select the upgrade file. For detailed operations, refer to
Disk
Management
.
3. Click or tap Upgrade to complete the local upgrade.
Online upgrade
1. First ensure that the rear-panel LAN interface is connected to the network (if you
have limited access to the Internet, please ask the administrator for permission).
2. Click or tap the function navigation icon at the lower-left corner of the screen
to enter the function navigation.
3. Then click or tap the
Upgrade icon to perform the upgrade operation.
19.5 Disk Management
You can enter the storage setting menu in the following ways.
• Click or tap the function navigation icon at the lower-left corner of the
screen, and then select Storage to enter the storage setting menu.
• Click or tap the Storage button on the toolbar to enter the storage setting
menu.
Then click or tap Disk at the lower-left corner of the "Storage" menu to enter the disk
management interface, as shown in the figure below.
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Figure 19.6 Disk Management Interface
Execute the following operations through the disk management menu:
Select a Disk
Before using the external storage device, make sure that a USB storage device (FAT32
format, flash memory) is connected correctly.
By default, the "Local Disk(C)" is selected. If an external storage device is inserted,
under the "Disk" menu, two available storage disks can be selected at the upper-left
corner of the "Disk" interface: Local Disk (C) and Removable USB Disk (D). If you select
an external storage device, for example, if you select "Removable USB Disk (D)", the
contents in USB Disk(D) will be displayed.
Create a Folder
Click or tap
New Folder, then a folder name input keyboard is displayed.
For how to use the keypad, refer to descriptions in
Parameter Setting Method
. Click or
tap any place on the screen to exit the keyboard.
Clear the Internal Memory Safely
Click or tap SecurityClear, then a prompt message "Execute secure memory wipe?" is
displayed. Click or tap OK to clear all the files stored in the internal disk. Otherwise,
click or tap Cancel to cancel security clear operation.
Select a File
Before operating on the file or folder, first select the desired file or folder.
Click or tap the check box at the right side of the folder, if checked, it is selected, with
an icon
being displayed. Click or tap the check box again or to deselect it.
The check box restores its original state.
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This series supports selecting multiple files or folders to operate on. You can also click
or tap the icon at the upper-right corner of the interface to select all the files and
folders under the current disk. Click or tap to cancel the select-all operation.
Cut, Copy, or Paste a File or a Folder
• Cut a File to a Specified Folder
Select a specified file or folder. Click or tap Cut to cut the specified file or folder.
Then select the destination folder. Then click or tap Paste to paste the specified
file or folder to the destination folder.
• Copy a File to a Specified Folder
Select a specified file or folder. Click or tap Copy to copy the specified file or
folder. Then select the destination folder. Then click or tap Paste to paste the
specified file or folder to the destination folder.
Delete a File or Folder
In the current folder, select the file or folder to be deleted. Click or tap Delete, then a
prompt message "Are you sure to delete the file?" is displayed. Click or tap OK to
delete the file. Otherwise, click or tap Cancel to cancel the deletion operation.
Rename a File or Folder
Select a specified file or folder, then click or tap Rename to input a new filename or
folder name with the pop-up virtual keypad. Then, the rename operation is
completed.
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20
System Utility Function Setting
In the Utility menu, you can set the I/O parameters and the system-related function
parameters. You can enter the "Utility" menu in the following ways.
• Click or tap the Notification Area at the lower-right corner of the screen. Then
the Utility menu is displayed.
• Click or tap the function navigation icon at the lower-left corner of the
screen, and then select Utility to enter the Utility menu.
20.1 I/O Setting
In Utility menu, click or tap IO to enter the I/O setting menu to configure the
following parameters.
Network Status
Different prompts will be displayed according to the current network connection
status.
• Network Config Succeeded!
• Acquiring IP...
• IP Conflict!
• DISCONNECTED!
• DHCP Config Failed
• Read Status Fail!
• CONNECTED
• Invalid IP
• IP lost
• Please wait...
MAC Address
For each instrument, the MAC address is unique. When assigning the IP address for
the instrument, the system uses the MAC address to identify the instrument.
VISA Address
Displays the VISA address currently used by the instrument.
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IP Configuration Type
The configuration type of the IP address can be DHCP, Auto IP, or Static IP. In different
IP configuration types, the configurations for IP address and other network
parameters are different.
• DHCP
If "DHCP" is selected, the DHCP server in the current network will assign the
network parameters (e.g. IP address, Subnet, Gateway, and DNS) for the
instrument.
• Auto IP
When "Auto IP" is selected, the instrument will acquire the IP address ranging
from "169.254.0.1" to "169.254.255.254" and the subnet mask (255.255.0.0)
automatically based on the current network configuration. The "Auto IP" works
only when "DHCP" is not selected or the connection failed.
• Static IP
If "Static IP" is selected, the instrument is configured with static IP. In this case,
you need to disable DHCP and Auto IP manually. Then you need to configure the
parameters such as "IP address", "Subnet", "Gateway", and "DNS" manually. At
this time, you can self-define the network parameters (e.g. IP address) of the
instrument.
- Set the IP address
The format of the IP address is nnn.nnn.nnn.nnn. The range of the first
segment (nnn) of the address is from 0 to 255 (except 127); wherein, the
valid range is from 0 to 223. The range for the other three segments is from
0 to 255. You are recommended to ask your network administrator for an IP
address available.
This setting will be saved to the non-volatile memory; if "Load Last" is set to
"Last", then DHCP and Auto IP are disabled at the next power-on. The
instrument will load the preset IP address automatically.
- Set the subnet mask
The format of the subnet mask is nnn.nnn.nnn.nnn. Wherein, the range of
"nnn" is from 0 to 255. You are recommended to ask your network
administrator for a subnet mask available.
This setting will be saved in the non-volatile memory; if "Load Last" is set to
"Last", then DHCP and Auto IP are disabled at the next power-on. The
instrument will load the preset subnet mask automatically.
- Set the default gateway
You can set this parameter in Static IP mode. The format of the gateway is
nnn.nnn.nnn.nnn. The range of the first segment (nnn) is from 0 to 223
(except 127), and the range for the other three segments is from 0 to 255.
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You are recommended to ask your network administrator for a gate address
available.
This setting will be saved in the non-volatile memory; if "Load Last" is set to
"Last", then DHCP and Auto IP are disabled at the next power-on. The
instrument will load the preset gateway automatically.
- Set the DNS address
You can set this parameter in Static IP mode. The format of the DNS address
is "nnn.nnn.nnn.nnn". The range for the first segment (nnn) of the address is
from 0 to 223 (except 127); and the range for the other three segments is
from 0 to 255. You are recommended to ask your network administrator for
an address available.
Generally, you do not need to set the DNS, so this parameter setting can be
ignored.
TIP
• When the three IP configuration types are all turned on, the priority of the parameter
configuration from high to low is "DHCP", "Auto IP", and "Static IP".
• The three IP configuration types cannot be all turned off at the same time.
mDNS
Click or tap the mDNS on/off switch to enable or disable the multicast Domain Name
System (mDNS). This system is used to provide the function of DNS server for service
discovery in a small network without a DNS server.
Host Name
A maximum of 26-byte strings can be supported.
GPIB
When using the GPIB interface, use the USB-GPIB interface converter to extend the
GPIB interface, and then use the GPIB cable to connect the instrument to the PC.
Configure the GPIB address. Its settable range is from 1 to 30. By default, it is 1.
Apply the Network Parameter Setting
Click or tap Apply to validate the current network parameter setting.
20.2 Basic Settings
In the Utility menu, click or tap Setup to enter the basic setting menu.
Language
This product supports menus in multiple languages, including the display of the help
information, prompt messages, and interface. Click or tap the drop-down button of
Language to select the specified system language.
System Utility Function Setting
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Load Last
You can set the system configuration to be recalled when the oscilloscope is powered
on again after power-off. Click or tap "Default" or "Last" for Load last.
• Last: returns to the setting of the system at last power-off.
• Default: returns to the factory setting of the system.
Power Status
• Switch Off: After the oscilloscope is connected to power, you need to press the
power key on the front panel to power on the instrument.
• Switch On: After the the oscilloscope is connected to power, it will be powered
on immediately.
Beeper
Click or tap the Beeper on/off switch to enable or disable the beeper. When the
beeper is enabled, you can hear the beeper sound in the following situations:
• Use a front-panel key or a menu key
• Use the touch screen
• When a prompt message is displayed
AUX Output
You can set the type of the signal output from the [AUX OUT] connector on the rear
panel.
• TrigOut: After this type is selected, at each trigger (hardware trigger), the
oscilloscope outputs a signal from the [AUX OUT] connector on the rear panel
that can reflect the current capture rate of the oscilloscope. If this signal is
connected to a waveform display device to measure the frequency, the found
measurement result is the same as the current capture rate.
• PassFail: When this type is selected, the instrument can output a positive or
negative pulse via the [AUX OUT] connector when a successful or failed event is
detected. Refer to descriptions in
To Set the Output Form of the Test Results
.
Enabling the Aux Output function in "PassFail" menu automatically toggles the
AUX Out parameter to "PassFail"; setting the AUX Out parameter to "TrigOut"
automatically disables the Aux Output function in "PassFail" menu.
Input Lock
Once the input lock is enabled, the input function is disabled, for which you can no
longer use the touch screen, front-panel keys, and knobs to configure the instrument.
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Press the front-panel channel keys in the order of , , , to
disable the input lock.
Expand
The waveform display can be set to expand or compress about the "Center" or
"GND".
• Center: When the vertical scale is changed, the displayed waveform will expand
or compress about the center of the display.
• GND: When the vertical scale is changed, the displayed waveform will expand or
compress about the ground level position of the signal.
Display Date and Time
Click or tap the Show Time on/off switch to turn on/off showing the date and time
on the screen. The date is displayed in "yyyy/mm/dd" format, and the time is
displayed in "hh:mm:ss" format in the Notification Area at the lower-right corner of
the screen. You can set the system date and time so that saved images are marked
with the data and time information.
• Date: Click or tap the "Date" input field, then the date setting menu is displayed.
The three dials in the menu represent year, month, and day. Set a proper date,
then click or tap OK to confirm the date modification. Otherwise, click or tap
or any area outside this menu to cancel date modification and exit the
menu.
• Time: Click or tap the "Time" input field, then the time setting menu is displayed.
The two dials in the menu represent hour and minute. Select the proper hour
and minute to set the time. After setup, click or tap OK to confirm the setting.
Otherwise, click or tap
or any area outside this menu to cancel time
modification and exit the menu.
20.3 About this Oscilloscope
In Utility menu, click or tap About, and then you can view the model, version, and
other information about this instrument in About menu.
• Model
Indicates the product model.
• Serial Number
Indicates the serial number, the unique identification for the product.
• Firmware
Indicates the firmware version number of the product.
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• Hardware
Indicates the hardware version number of the product.
• Build
Indicates the creation time of the software version.
• Android.Build
Indicates the creation time of the Android operating system.
• Android.Version
Indicates the version number of the Android operating system. For example, 7.1.
0.
• Launcher
Indicates the desktop UI version number of the Android operating system.
• WebControl
Indicates the version number of browser remote control module.
20.4 Other Settings
EXT 10M IN
Controls the on/off state of the rear-panel [10MHz REF IN] interface. You can use the
EXT 10M IN on/off switch to enable or disable this interface.
Open Source Acknowledgment
Click or tap Open Source Acknowledgment to view the open source
acknowledgment of this series oscilloscope in the pop-up window.
20.5 Auto Config
In "Utility" menu, click or tap Auto Config to enter the menu in which you can
configure the Auto function.
• Click or tap Peak to Peak on/off switch to enable or disable the peak-to-peak
priority setting. This function is intended for the shifted signal. If there is a large
deviation, you can view the signal waveform in priority when you enable the
function.
• Click or tap
Live CH on/off switch to turn on/off examining channels that are
turned on.
If "OFF" is selected, enable the Auto function and 4 analog channels (CH1-CH4)
will be examined for signal activity in sequence. If no signal is detected for a
specified channel, the channel will be turned off; otherwise, if a signal is
detected, the channel will be autoscaled to best display the signal. If "ON" is
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selected, enable the Auto function and only the channels that are turned on will
be examined.
• Click or tap Overlay on/off switch to enable or disable the waveform overlay
display function. If enabled, waveforms of different channels will be displayed in
the same position of the screen; if disabled, waveforms of different channels will
be displayed on the screen from top to bottom in sequence.
• Click or tap Keep Coupling on/off switch to turn on/off maintaining channel
coupling. If "ON" is selected, enable the Auto function and the channel coupling
setting is maintained; if "OFF" is selected, the channel coupling is DC coupling by
default.
20.6 SelfCal
The self-calibration program can quickly make the oscilloscope to work in an optimal
state to get the precise measurement results. You can perform self-calibration at any
time, especially when the changes of the ambient temperature reach or above 5℃.
Make sure that the oscilloscope has been warmed up or operating for more than 30
minutes before the self-calibration.
In "Utility" menu, click or tap SelfCal, the self-calibration menu is as shown below.
Figure 20.1 Self-calibration Menu
• Click or tap Start, and then the oscilloscope will start to execute the self-
calibration program.
• After starting the self-calibration program, click or tap Exit to cancel self-
calibration operation at any time.
• Click or tap Close to close the self-calibration information window.
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20.7 Option List
In the "Utility" menu, click or tap Options to view all the options of the instrument.
For detailed procedures of installing the options, please refer to
Viewing the Option
Information and Install the Option
.
20.8 Quick Action Settings
In Utility menu, click or tap Quick to enter the menu to configure the quick action
key on the front panel.
Figure 20.2 Quick Menu
Save Image
• Click or tap Save Image, then Operation is set to "Save Image".
• In the Format menu item, available image types include "png", "bmp", and
"jpg".
• Click or tap the Invert on/off switch to turn on/off inverting image colors.
• Click or tap "Color" or "Gray" for
Color to select the desired image color.
After setup, click or tap the key at the upper-right corner of the front panel to
capture the current screen and save the image with the specified format. The location
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where the file is saved depends on the File Path setting in Storage menu. For details,
please refer to
To Save a File
.
Save Wave
• Click or tap Save Wave, then Operation is set to "Save Wave".
• Select "Memory" or "Screen" under Data Source as the source of the saved
waveform.
• Available options under Format include "bin" and "csv".
After setup, click or tap the key at the upper-right corner of the front panel to
save the waveform based on the settings. The location where the file is saved
depends on the File Path setting in Storage menu. For details, please refer to
To Save
a File
.
Save Setup
Click or tap Save Setup, then Operation is set to "Save Setup".
After setup, click or tap the key at the upper-right corner of the front panel to
save the setup file suffixed with ".stp". The location where the file is saved depends on
the File Path setting in Storage menu. For details, please refer to
To Save a File
.
All Measurements
• Click or tap All Measure, then Operation is set to "All Measure".
• In All Measure item, click or tap the drop-down button to select the channel
(CH1-CH4) to measure.
After setup, click or tap the key at the upper-right corner of the front panel to
perform the measurement on the specified channel.
Reset Statistics
• Click or tap Stat Reset, then Operation is set to "Stat Reset".
• Click or tap "Measure" or "Pass/Fail" under Stat Reset to reset all statistics of the
"Measure" or "Pass/Fail" function.
After setup, click or tap the
key at the upper-right corner of the front panel.
This resets all statistics of the specified function in the Result sidebar at the right side
of the screen and starts the measurements again.
Waveform Recording
Click or tap
Record, then Operation is set to "Record".
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After setup, click or tap the key at the upper-right corner of the front panel to
perform the waveform recording.
Save Group
• Click or tap Save Group, then Operation is set to "Save Group".
• Under Save Group, select one or more items from "Save Image", "Save Wave",
and "Save Setup".
After setup, click or tap the
key at the upper-right corner of the front panel to
save the selected items based on the settings. The location where the file is saved
depends on the File Path setting in Storage menu. For details, please refer to
To Save
a File
.
20.9 Self-check
In Utility menu, click or tap Self Check to enter the "Self Check" setting. You can test
the following self-check items for the device.
Key Test
Click or tap Key Test to enter the key test interface (virtual front-panel key), as shown
in the figure below.
Figure 20.3 Key Test Interface
At this time, you can press the front-panel keys to check whether the virtual keys are
highlighted. If yes, it indicates that the keys work normally; if no, it indicates that
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there's something wrong with the keys. Click or tap Exit at the lower-left corner of the
interface or press for three consecutive times to exit the key test interface.
Touch Test
Click or tap Touch Test to enter the touch screen test interface, as shown in the figure
below.
Figure 20.4 Touch Screen Test Interface
Slide with your finger on the screen. If there is a line displaying at the empty area
where you slide on the screen and the box that you tap turns out to be filled with
green background, it indicates that the touch function of this area is normal. Click or
tap Exit at the lower-left corner of the interface or press for three consecutive
times to exit the touch screen test interface.
Screen Test
Click or tap Screen Test to enter the screen test interface and check whether the
defective pixel exists.
There are 15 screen test interfaces. Click or tap the screen to switch to the next screen
test interface. Press
for three consecutive times to exit the screen test interface.
Board Test
Click or tap Board Test, then the board test interface is displayed. Check whether the
status of each module is in good condition.
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21
Remote Control
The instrument can be remotely controlled by the following three methods:
• User-defined Programming
Users can program and control the instrument by using the SCPI (Standard
Commands for Programmable Instruments) commands. For details about the
SCPI commands and programming, refer to
Programming Guide
.
• PC Software
Users can use the PC software to send commands to control the instrument
remotely. RIGOL Ultra Sigma is recommended. You can download the software
from RIGOL official website (
http://www.rigol.com
).
Operation Procedures:
- Set up communication between the instrument and PC.
- Run Ultra Sigma and search for the instrument resource.
- Open the remote command control panel to send commands.
• Web Control
This instrument supports Web Control. Connect the instrument to the network,
then input the IP address of the instrument into the address bar of the browser
of your computer. The web control interface is displayed. Click Web Control to
enter the web control page. Then you can view the display of the real-time
interface of the instrument. Through the Web Control method, you can migrant
the device control to the control terminals (e.g. PC, Mobile, iPad, and other smart
terminals) to realize remote control of the instrument. When you first log in to
the Web Control, the user name is "admin" and password is "rigol".
This instrument can be connected to the PC via the USB, LAN, or GPIB interface to set
up communication and realize remote control through the PC. The remote control can
be realized by using SCPI (Standard Commands for Programmable Instruments)
commands.
This chapter will illustrate how to use the RIGOL Ultra Sigma software to remotely
control the instrument via various interfaces. Note: When communicating with the PC
via GPIB, the instrument does not support large data transmission operation such as
screenshot and waveform reading.
CAUTION
Before connecting the communication cable, please turn off the instrument to avoid
causing damage to the communication interfaces.
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21.1 Remote Control via USB
1. Connect the device
Use the USB cable to connect the rear-panel USB DEVICE interface of the
instrument to the USB HOST interface of the PC.
2. Search for the device resource
Start up Ultra Sigma and the software will automatically search for the resource
currently connected to the PC via the USB interface. You can also click USB-TMC to
search for the resource.
3. View the device resource
The resources found will appear under the "RIGOL Online Resource" directory, and
the model number and USB interface information of the instrument will also be
displayed.
4. Control the instrument remotely
Right-click the device resource name and select "SCPI Panel Control" to open the
remotely command control panel. Then you can send commands and read data
through the panel. For details about the SCPI commands and programming, refer
to the Programming Guide of this instrument.
21.2 Remote Control via LAN
1. Connect the device
Use the network cable to connect the instrument to your local area network (LAN).
2. Configure network parameters
Configure the network parameters of the instrument according to "
I/O Setting
".
3. Search for Search device resource
Start up Ultra Sigma and click LAN to open the panel as shown in the figure below.
Click Search and the software searches for the instrument resources currently
connected to the LAN and the resources found are displayed at the right section of
the window as shown in the figure below. Click OK to add it.
Remote Control
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Besides, you can input the IP address of the instrument manually into the text field
under "Manual Input LAN Instrument IP", then click TEST. If the instrument passes
the test, click ADD to add the instrument to the LAN instrument resource list in the
right section; if the instrument fails the test, please check whether the IP address
that you input is correct, or use the auto search method to add the instrument
resource.
4. View the device resource
The resources found will appear under the "RIGOL Online Resource" directory.
5. Control the instrument remotely
Right-click the device resource name and select "SCPI Panel Control" to open the
remotely command control panel. Then you can send commands and read data
through the panel.
6. Load LXI webpage
As this instrument conforms to LXI CORE 2011 DEVICE standards, you can load LXI
web page through Ultra Sigma (right-click the instrument resource name and
select "LXI-Web"). Various important information about the instrument (including
the model, manufacturer, serial number, description, MAC address, and IP address)
will be displayed on the web page. You can also directly input the IP address of the
instrument in the address bar of the PC browser to load the LXI web page.
21.3 Remote Control via GPIB
1. Connect the device
Use the USB-GPIB interface converter to extend the GPIB interface for the
instrument, and then use the GPIB cable to connect the instrument to the PC to
realize remote control.
2. Install the driver of GPIB card
Correctly install the driver of the GPIB card which has been connected to the PC.
3. Set the GPIB address
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Click or tap the Notification Area at the lower-right corner of the screen, then the
Utility menu is displayed. Click or tap IO, and then click or tap the input field of
GPIB to input the GPIB address with the pop-up numeric keypad.
4. Search for the device resource
Start Ultra Sigma, and then click GPIB. A window is displayed as shown in
Figure
21.1
. Click Search and the software searches for the instrument resource currently
connected to the PC via the GPIB interface. The resource found is displayed at the
right side of the window, as shown in
Figure 21.2
. Click OK to add it.
Figure 21.1 Search for the Available Device
Figure 21.2 Confirm the Available Device
5. View the device resource
Click OK to go back to the main interface of Ultra Sigma. The searched instrument
resource will be displayed under the directory of "RIGOL Online Resource".
6. Control the instrument remotely
Right-click the device resource name. In the displayed menu, select "SCPI Panel
Control" to open the programming command control panel. Then you can input
commands to send commands and read data.
Remote Control
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22
Troubleshooting
1. When I power on the instrument, the instrument stays black and does not
display anything.
a. Check whether the power supply has been connected correctly.
b. Check whether the power key is really pressed.
c. Check whether the fuse is blown. If you need to replace the fuse, use only the
specified fuse that conforms to the product.
d. Restart the instrument after finishing the above inspections.
e. If the problem still persists, please contact RIGOL.
2. No waveform of the signal is displayed on the screen.
a. Check whether the probe is properly connected to the item under test.
b. Check whether there are signals generated from the item to be tested (you can
connect the probe compensation output signal to the faulty channel to locate
the problem, and then determine whether the channel or the item to be tested
has a problem).
c. Resample the signal.
d. If the problem still persists, please contact RIGOL.
3. The USB storage device cannot be recognized.
a. Check whether the USB storage device can work normally when connected to
other instruments or PC.
b. Make sure that the USB storage device is FAT32 format and flash type. The
instrument doesn't support hardware USB storage device.
c. After restarting the instrument, insert the USB storage device again to check
whether it can work normally.
d. If the USB storage device still cannot work normally, please contact RIGOL.
4. The touch-enabled operation does not work.
a. Check whether you have locked the touch screen. If yes, unlock the touch
screen.
b. Check whether the screen or your finger is stained with oil or sweat. If yes,
please clean the screen or dry your hands.
c. Check whether there is a strong magnetic field around the instrument. If the
instrument is close to the strong magnetic field (e.g. a magnet), please move
the instrument away from the magnet field.
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d. If the problem still persists, please contact RIGOL.
Troubleshooting
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23
Appendix
23.1 Appendix A: Options and Accessories
Order Information Order No.
Model
70 MHz, 2 GSa/s, 50 Mpts, 2CH DHO DHO1072
70 MHz, 2 GSa/s, 50 Mpts, 4CH DHO DHO1074
100 MHz, 2 GSa/s, 50 Mpts, 2CH DHO DHO1102
100 MHz, 2 GSa/s, 50 Mpts, 4CH DHO DHO1104
200 MHz, 2 GSa/s, 50 Mpts, 2CH DHO DHO1202
200 MHz, 2 GSa/s, 50 Mpts, 4CH DHO DHO1204
Standard Accessories
Power cord (based on destination country) — —
USB Cable — —
4 Passive HighZ Probes (350 MHz) Standard for
DHO1204, 2 Passive HighZ Probes (350 MHz) Standard
for DHO1202
PVP2350
4 Passive HighZ Probes (150 MHz), Standard for
DHO1104/DHO1074
PVP3150
2 Passive HighZ Probes (150 MHz), Standard for
DHO1102/DHO1072
PVP3150
Bandwidth Upgrade Option
70 MHz to 100 MHz Upgrade Option DHO1000-BWU7T10
70 MHz to 200 MHz Upgrade Option DHO1000-BWU7T20
100 MHz to 200 MHz Upgrade Option DHO1000-BWU10T20
Memory Depth Upgrade Option
100 Mpts Memory Depth Upgrade Option DHO1000-RLU-01
NOTE
For all the mainframes, accessories, and options, please contact the local office of RIGOL.
23.2 Appendix B: Warranty
RIGOL TECHNOLOGIES CO., LTD. (hereinafter referred to as RIGOL) warrants that the
product mainframe and product accessories will be free from defects in materials and
workmanship within the warranty period. If a product proves defective within the
warranty period, RIGOL guarantees free replacement or repair for the defective
product.
To get repair service, please contact your nearest RIGOL sales or service office.
Appendix
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Copyright ©RIGOL TECHNOLOGIES CO., LTD. All rights reserved.
There is no other warranty, expressed or implied, except such as is expressly set forth
herein or other applicable warranty card. There is no implied warranty of
merchantability or fitness for a particular purpose. Under no circumstances shall
RIGOL be liable for any consequential, indirect, ensuing, or special damages for any
breach of warranty in any case.
23.3 Appendix C: Factory Settings
Click or tap the Default button on the toolbar at the top of the screen or press the
front-panel key, then a prompt message "Restore default settings?" is
displayed. Click or tap OK to restore the instrument to its factory default settings, as
shown in the table below.
Table 23.2 Factory Settings
Parameter Factory Settings
Horizontal
Horizontal Scale 2 μs
Horizontal Position 0 s
Delayed Sweep OFF
Roll Auto
Fine OFF
Horizontal Expansion Center
Acquisition
Acquisition Mode Normal
Memory Depth 10 kpts
Vertical
CH1 ON
CH2 OFF
CH3 OFF
CH4 OFF
Fine OFF
Vertical Scale 50 mV
Vertical Offset 0 V
Channel Unit [V]
Channel Coupling DC
Bias 0 V
BW Limit OFF
Channel Delay 0 s
Display Label OFF
Appendix
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Parameter Factory Settings
Invert OFF
Attenuation 1X
Trigger
Trigger Type Edge Trigger
Trigger Mode Auto
Source Selection CH1
Edge Type Rising
Trigger Coupling DC
Trigger Holdoff 8 ns
Noise Rejection OFF
Display
Display Type Vector
Persistence Time Min
Intensity 50%
Grid FULL
Grid Brightness 50%
Window Transparency 50%
Cursor Brightness 80%
Show Scale ON
Color Grade OFF
Waveform Freeze ON
Measure
Threshold OFF
Indicator OFF
Statistics OFF
Count 1,000
Type %
Source CH1
Upper 90%
Mid 50%
Lower 10%
Amplitude Measurement
Method
Auto
Region Main
Cursor
Mode OFF
Manual
Source CH1
Select X
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Parameter Factory Settings
AX BX OFF
AY -6 μs
BY 6 μs
Track
AX Source CH1
BX Source CH1
AX BX OFF
Track X
AX -6 μs
BX 6 μs
XY
Select X
AX BX OFF
AX -150 mV
BX 150 mV
Counter
Source CH1
Statistic OFF
Measure Frequency
Resolution 4
DVM
Source CH1
Mode AC RMS
Beeper OFF
Upper Limit 1 V
Lower Limit 0 V
Save Image
Format *.png
Invert OFF
Color Color
Header ON
Overlay OFF
Save Wave
Data Source Screen
Format *.bin
Save Setup
File Type *.stp
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Parameter Factory Settings
Load Setup
File Type *.stp
System Setting
Beeper OFF
AUX Out TrigOut
Input Lock OFF
Expand GND
Show Time ON
Other Setting
EXT 10M IN OFF
Auto Config
Peak to Peak ON
Live CH OFF
Overlay ON
Coupling OFF
Quick Settings
Operation Save Image
Format *.png
Invert OFF
Color Color
Pass/Fail Test
Enable OFF
Source CH1
Y Mask 480 mdiv
X Mask 240 mdiv
Format (to load file) *.pf
Format (to save file) *.pf
File Name RigolDS
Aux Output OFF
Pulse 1 μs
Output Event Fail
Polarity Positive
Error Action N/A
Power Analysis
Display OFF
Cnt 1000
Power Quality
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Parameter Factory Settings
Voltage CH1
Current CH2
Freq.Ref Voltage
Type Percent (%)
Upper 90%
Mid 50%
Lower 10%
Ripple
Source CH1
Waveform Recording
Waveform Recording OFF
Record
Interval 10 ns
Frames 1,000
Beeper
Play
Minimize OFF
Mode
Sequence
Interval 100 ms
Math Operation
Invert OFF
Expand GND
Display Label OFF
Grid FULL
A+B
Operation OFF
SourceA CH1
SourceB CH1
Scale 500 mV
Offset 0 V
A-B
Operation OFF
SourceA CH1
SourceB CH1
Scale 500 mV
Offset 0 V
A×B
Operation OFF
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Parameter Factory Settings
SourceA CH1
SourceB CH1
Scale 500 mU
Offset 0 U
A÷B
Operation OFF
SourceA CH1
SourceB CH1
Scale 500 mU
Offset 0 U
FFT
Operation OFF
Source CH1
X Span-Center
Unit dBm/dBV
Center Frequency 5 MHz
Frequency Span 10 MHz
Vertical Scale 20 dBV
Offset 0 dBV
Window Function Hanning
Color Grade OFF
Peak Search OFF
Peak Number 5
Threshold 5.5 dBV
Excursion 1.8 dBV
Table Order Amp Order
A&&B
Operation OFF
SourceA CH1
SourceB CH1
Wave Size Medium
Offset 0 div
Sensitivity 300 mdiv
Thre.CH1 0 V
Thre.CH2 0 V
Thre.CH3 0 V
Thre.CH4 0 V
A||B
Operation OFF
SourceA CH1
SourceB CH1
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Parameter Factory Settings
Wave Size Medium
Offset 0 div
Sensitivity 300 mdiv
Thre.CH1 0 V
Thre.CH2 0 V
Thre.CH3 0 V
Thre.CH4 0 V
A^B
Operation OFF
SourceA CH1
SourceB CH1
Wave Size Medium
Offset 0 div
Sensitivity 300 mdiv
Thre.CH1 0 V
Thre.CH2 0 V
Thre.CH3 0 V
Thre.CH4 0 V
!A
Operation OFF
SourceA CH1
Wave Size Medium
Offset 0 div
Sensitivity 300 mdiv
Thre.CH1 0 V
Thre.CH2 0 V
Thre.CH3 0 V
Thre.CH4 0 V
Intg
Operation OFF
Source CH1
Scale 500 mV*s
Offset 0 V*s
Bias 0 V
Diff
Operation OFF
Source CH1
Scale 500 mV/s
Offset 0 V/s
Smooth 5
Sqrt
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Parameter Factory Settings
Operation OFF
Source CH1
Scale 500 mU
Offset 0 U
Lg
Operation OFF
Source CH1
Scale 500 mU
Offset 0 U
Ln
Operation OFF
Source CH1
Scale 500 mU
Offset 0 U
Exp
Operation OFF
Source CH1
Scale 500 mU
Offset 0 U
Abs
Operation OFF
Source CH1
Scale 500 mV
Offset 0 V
Low Pass
Operation OFF
Source CH1
Scale 500 mV
Offset 0 V
ωc 4 kHz
High Pass
Operation OFF
Source CH1
Scale 500 mV
Offset 0 V
ωc 4 kHz
Band Pass
Operation OFF
Source CH1
Scale 500 mV
Offset 0 V
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Parameter Factory Settings
ωc1 4 kHz
ωc2 8 kHz
Band Stop
Operation OFF
Source CH1
Scale 500 mV
Offset 0 V
ωc1 4 kHz
ωc2 8 kHz
AX+B
Operation OFF
Source CH1
Scale 500 mV
Offset 0 V
A 1
B 0
Ref
Current Ref1
Source CH1
VScale 50 mV
VOffset 0 V
Label REF1
Label Display OFF
Color Orange
Decode
Bus Type Parallel
Bus Status OFF
Format Hex
Label ON
Event Table OFF
Parallel
CLK OFF
BUS CH1
Threshold 0 V
Endian Invert
Polarity Positive
RS232
TX CH1
RX OFF
Threshold 0 V
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Parameter Factory Settings
Polarity Negative
Baud Rate 9.6 kbps
Data 8 bits
Endian LSB
Parity None
Stop Bit 1 bit
I2C
CLK CH1
SCL Thre 0 V
SDA CH2
SDA Thre 0 V
Exchange SCL/SDA
R/W Without
SPI
CLK CH1
CLK Threshold 0 V
Slope Rising
MISO CH2
MISO Threshold 0 V
MOSI OFF
Mode Timeout
Timeout 1 μs
Polarity Positive
Width 8
Endian MSB
LIN
Source CH1
Threshold 0 V
Baud Rate 19.2 kbps
Parity Without
Version Both
CAN
Source CH1
Threshold 0 V
Signal CAN_L
Baud 1 Mbps
Sample Position 50%
FlexRay
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