Rigol MSO8074A oscilloscope User Manual

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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.

If you have any problem or requirement when using our products or this manual, please contact

RIGOL.

E-mail: ser[email protected]

Website:

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Section Description Page

List of Figures................................................................................................................................. X

List of Tables...............................................................................................................................XIV

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 MSO8000A Series Overview .........................................................................................8

3 Document Overview .....................................................................................................10

4 Quick Start ........................................................................................................................12

4.1 General Inspection ............................................................................................................................12

4.2 Appearance and Dimensions ........................................................................................................13

4.3 To Prepare for Use .............................................................................................................................13

4.3.1 To Adjust the Supporting Legs ........................................................................................13

4.3.2 To Connect to AC Power ....................................................................................................14

4.3.3 Turn-on Checkout ................................................................................................................ 14

4.3.4 Fuse Replacement ................................................................................................................15

4.3.5 To Connect the Probe .........................................................................................................16

4.3.6 Function Inspection .............................................................................................................19

4.3.7 Probe Compensation .......................................................................................................... 20

4.4 Front Panel Overview .......................................................................................................................21

4.5 Rear Panel Overview ........................................................................................................................ 23

4.6 Front Panel Function Overview .................................................................................................... 25

4.6.1 Vertical ..................................................................................................................................... 25

4.6.2 Horizontal ............................................................................................................................... 26

4.6.3 Wave .........................................................................................................................................28

4.6.4 Trigger ......................................................................................................................................29

4.6.5 Clear ..........................................................................................................................................29

4.6.6 Auto .......................................................................................................................................... 29

4.6.7 RUN/STOP ...............................................................................................................................30

4.6.8 Single ........................................................................................................................................30

4.6.9 Multifunction knob ..............................................................................................................30

4.6.10 Function Menu ......................................................................................................................30

4.6.11 Touch Lock Key ......................................................................................................................31

4.6.12 Quick key (shortcut key) .................................................................................................... 31

4.7 User Interface ..................................................................................................................................... 32

4.8 Touch Screen Controls .....................................................................................................................37

4.8.1 Tap .............................................................................................................................................37

4.8.2 Pinch & Stretch ..................................................................................................................... 38

4.8.3 Drag .......................................................................................................................................... 38

4.8.4 Rectangle Drawing ...............................................................................................................39

4.9 Parameter Setting Method ............................................................................................................ 40

4.10 To Use the Security Lock .................................................................................................................42

4.11 To Use the Built-in Help System ...................................................................................................42

4.12 To View the Option Information and the Option Installation ........................................... 44

5 To Set the Vertical System .......................................................................................... 47

5.1 To Enable or Disable the Analog Channel ................................................................................47

5.2 To Adjust the Vertical Scale ........................................................................................................... 48

5.3 Vertical Expansion .............................................................................................................................49

5.4 To Adjust the Vertical Offset ..........................................................................................................50

5.5 Channel Coupling ..............................................................................................................................51

5.6 BW Limit ...............................................................................................................................................52

5.7 Probe Ratio ..........................................................................................................................................52

5.8 Input Impedance ...............................................................................................................................54

5.9 Waveform Invert ................................................................................................................................54

5.10 To Set the Probe ................................................................................................................................ 55

5.10.1 Passive Probe .........................................................................................................................55

5.10.2 Active Probe ...........................................................................................................................56

5.11 Amplitude Unit ...................................................................................................................................56

5.12 Channel Delay .................................................................................................................................... 57

5.13 To Set the Bias ....................................................................................................................................57

5.14 Channel Label .....................................................................................................................................58

6 To Set the Horizontal System .................................................................................... 60

6.1 To Adjust the Horizontal Time Base ........................................................................................... 60

6.2 To Adjust the Horizontal Position ................................................................................................61

6.3 Delayed Sweep ...................................................................................................................................62

7 To Set the Sample System .......................................................................................... 65

7.1 Timebase Mode .................................................................................................................................65

7.1.1 YT Mode ..................................................................................................................................65

7.1.2 XY Mode ..................................................................................................................................65

7.1.3 ROLL Mode .............................................................................................................................68

7.2 Acquisition Mode ..............................................................................................................................68

7.2.1 Normal .....................................................................................................................................68

7.2.2 Average ....................................................................................................................................69

7.2.3 Peak ...........................................................................................................................................70

7.2.4 High Resolution .................................................................................................................... 70

7.3 Sampling Mode ................................................................................................................................. 70

7.4 Sample Rate ........................................................................................................................................71

7.5 LA Sample Rate ..................................................................................................................................72

7.6 Memory Depth ...................................................................................................................................72

7.7 LA Memory Depth ............................................................................................................................ 74

7.8 Anti-Aliasing ....................................................................................................................................... 74

7.9 Horizontal Expansion .......................................................................................................................74

8 To Trigger the Oscilloscope ........................................................................................76

8.1 Trigger Source .................................................................................................................................... 76

8.2 Trigger LEVEL/Threshold Level ..................................................................................................... 77

8.3 Trigger Mode ...................................................................................................................................... 78

8.4 Trigger Coupling ................................................................................................................................80

8.5 Trigger Holdoff ...................................................................................................................................80

8.6 Noise Rejection ..................................................................................................................................81

8.7 Trigger Type .........................................................................................................................................81

8.7.1 Edge Trigger ...........................................................................................................................82

8.7.2 Pulse Trigger .......................................................................................................................... 83

8.7.3 Slope Trigger ..........................................................................................................................85

8.7.4 Video Trigger ......................................................................................................................... 89

8.7.5 Pattern Trigger .......................................................................................................................91

8.7.6 Duration Trigger ................................................................................................................... 94

8.7.7 Timeout Trigger .................................................................................................................... 97

8.7.8 Runt Trigger ........................................................................................................................... 99

8.7.9 Window Trigger ..................................................................................................................101

8.7.10 Delay Trigger ....................................................................................................................... 103

8.7.11 Setup/Hold Trigger ........................................................................................................... 106

8.7.12 Nth Edge Trigger ................................................................................................................108

8.7.13 RS232 Trigger (Option) ....................................................................................................110

III

8.7.14 I2C Trigger (Option) ..........................................................................................................112

8.7.15 SPI Trigger (Option) .......................................................................................................... 116

8.7.16 CAN Trigger (Option) ....................................................................................................... 118

8.7.17 FlexRay Trigger (Option) ..................................................................................................121

8.7.18 LIN Trigger (Option) ..........................................................................................................123

8.7.19 I2S Trigger (Option) .......................................................................................................... 126

8.7.20 MIL-STD-1553 Trigger (Option) ....................................................................................129

8.8 Zone Trigger ..................................................................................................................................... 133

8.9 Trigger Output Connector ........................................................................................................... 135

9 Operations and Measurements ..............................................................................137

9.1 Math Operation ...............................................................................................................................137

9.1.1 Addition ................................................................................................................................ 138

9.1.2 Subtraction ...........................................................................................................................139

9.1.3 Multiplication ......................................................................................................................140

9.1.4 Division ..................................................................................................................................141

9.1.5 FFT ...........................................................................................................................................143

9.1.6 "AND" Operation ...............................................................................................................147

9.1.7 "OR" Operation .................................................................................................................. 149

9.1.8 "XOR" Operation ................................................................................................................151

9.1.9 "NOT" Operation ................................................................................................................152

9.1.10 Intg ..........................................................................................................................................154

9.1.11 Diff .......................................................................................................................................... 155

9.1.12 Sqrt ......................................................................................................................................... 156

9.1.13 Lg (Base 10 Exponential) .................................................................................................157

9.1.14 Ln .............................................................................................................................................158

9.1.15 Exp ...........................................................................................................................................160

9.1.16 Abs ..........................................................................................................................................161

9.1.17 Low Pass ................................................................................................................................162

9.1.18 High Pass .............................................................................................................................. 163

9.1.19 Band Pass ..............................................................................................................................165

9.1.20 Band Stop .............................................................................................................................166

9.1.21 AX+B ...................................................................................................................................... 167

9.1.22 Avg ..........................................................................................................................................169

9.1.23 Math Operation Label ......................................................................................................170

9.2 Auto Measurement ........................................................................................................................ 171

9.2.1 Quick Measurement after AUTO .................................................................................. 171

9.2.2 Measurement Parameter .................................................................................................173

9.2.3 Measurement Settings .....................................................................................................181

9.2.4 Remove the Measurement Result ................................................................................185

9.2.5 Statistical Function ............................................................................................................ 186

9.2.6 All Measurement ................................................................................................................186

9.3 Cursor Measurement .....................................................................................................................186

9.3.1 Manual Mode ......................................................................................................................188

9.3.2 Track Mode .......................................................................................................................... 193

9.3.3 XY Mode ............................................................................................................................... 196

9.3.4 Measure Mode ....................................................................................................................198

10 Digital Voltmeter (DVM) and Frequency Counter ............................................199

10.1 Digital Voltmeter (DVM) ...............................................................................................................199

10.1.1 To Enable or Disable DVM Measurement ................................................................. 199

10.1.2 To Select the Measurement Source .............................................................................200

10.1.3 To Select Measurement Mode ...................................................................................... 200

10.1.4 To Set the Limits .................................................................................................................200

10.2 Frequency Counter .........................................................................................................................201

10.2.1 To Enable or Disable the Frequency Counter ...........................................................201

10.2.2 To Select the Measurement Source .............................................................................202

10.2.3 To Select the Measurement Item ................................................................................. 202

10.2.4 To Set the Resolution ........................................................................................................202

10.2.5 To Clear Count .................................................................................................................... 202

10.2.6 To Enable or Disable the Statistical Function ...........................................................202

11 Power Analysis (Option) ............................................................................................204

11.1 Power Quality ...................................................................................................................................204

11.2 Ripple ..................................................................................................................................................207

12 Histogram Analysis .....................................................................................................209

12.1 To Enable or Disable the Histogram Function ......................................................................209

12.2 To Select the Histogram Type .....................................................................................................210

12.3 To Select the Histogram Source ................................................................................................ 210

12.4 To Set the Measurement Items ..................................................................................................210

12.5 To Set the Histogram Height ......................................................................................................211

12.6 To Set the Histogram Range .......................................................................................................211

12.7 To Enable or Disable the Statistical Function ........................................................................211

12.8 To Reset ..............................................................................................................................................212

13 Real-time Eye Diagram and Jitter Analysis (Option) .......................................213

13.1 Real-time Eye Analysis .................................................................................................................. 213

13.1.1 To Enable or Disable the Eye Analysis Function ......................................................214

13.1.2 To Select the Source of the Eye Diagram .................................................................. 214

13.1.3 Threshold Settings .............................................................................................................214

13.1.4 To Set Clock Recovery ......................................................................................................215

13.1.5 To Enable or Disable the Eye Measurement Result ................................................216

13.1.6 To Reset Color .....................................................................................................................217

13.2 Jitter Analysis ....................................................................................................................................217

13.2.1 To Enable or Disable the Jitter Function ....................................................................218

13.2.2 To Select the Jitter Source .............................................................................................. 218

13.2.3 Threshold Settings .............................................................................................................218

13.2.4 To Set Clock Recovery ......................................................................................................219

13.2.5 To Set the Jitter Measurement ...................................................................................... 219

13.2.6 To Enable or Disable the Jitter Measurement Result .............................................222

13.2.7 To Reset Statistics .............................................................................................................. 222

14 Digital Channel .............................................................................................................223

14.1 To Select the Digital Channel ......................................................................................................223

14.2 To Enable/Disable the Digital Channel ....................................................................................224

14.3 To Set the Threshold ......................................................................................................................225

14.4 Auto Arrangement Setting ..........................................................................................................225

14.5 To Set the Waveform Display Size ............................................................................................ 226

14.6 To Set the Label ...............................................................................................................................226

14.7 Group Setting ...................................................................................................................................226

14.8 Waveform Color of the Digital Channel ..................................................................................227

15 Protocol Decoding ......................................................................................................229

15.1 Parallel Decoding ............................................................................................................................229

15.2 RS232 Decoding (Option) ............................................................................................................236

15.3 I2C Decoding (Option) ..................................................................................................................243

15.4 SPI Decoding (Option) ..................................................................................................................248

15.5 LIN Decoding (Option) ................................................................................................................. 254

15.6 CAN Decoding (Option) ...............................................................................................................261

15.7 FlexRay Decoding (Option) ......................................................................................................... 266

15.8 I2S Decoding (Option) ..................................................................................................................271

15.9 1553B Decoding (Option) ............................................................................................................276

16 Reference Waveform ..................................................................................................280

16.1 To Enable the Ref Function ..........................................................................................................280

16.2 To Select the Reference Channel ...............................................................................................280

16.3 To Select the Ref Source ...............................................................................................................280

16.4 To Adjust the Ref Waveform Display ....................................................................................... 281

16.5 To Save to Internal Memory ........................................................................................................281

16.6 To Clear the Display of the Reference Waveform ................................................................281

16.7 To View Details of the Reference Waveform ......................................................................... 281

16.8 To Reset the Reference Waveform ............................................................................................282

16.9 To Set the Color of the Reference Waveform ....................................................................... 282

16.10 To Set the Label ...............................................................................................................................282

16.11 To Export to Internal or External Memory ............................................................................. 283

16.12 To Import from Internal or External Memory ....................................................................... 283

17 Pass/Fail Test ................................................................................................................. 284

17.1 To Enable or Disable the Pass/Fail Test Function .................................................................284

17.2 To Start or Stop the Pass/Fail Test Operation ........................................................................284

17.3 To Select the Source ...................................................................................................................... 284

17.4 To Create a Mask .............................................................................................................................285

17.5 To Save a Mask ................................................................................................................................ 286

17.6 To Load a Mask ................................................................................................................................286

17.7 To Set the Output Form of the Test Results ...........................................................................286

17.8 To Enable or Disable the Display of the Statistics of the Test Results .......................... 287

17.9 To Reset Statistics ........................................................................................................................... 288

18 Waveform Recording and Playing .........................................................................289

18.1 Common Settings ...........................................................................................................................289

18.2 Record Options ................................................................................................................................290

18.3 Play Options ..................................................................................................................................... 292

19 Search and Navigation Function ............................................................................293

19.1 Search Function ...............................................................................................................................293

19.2 Navigation Function ...................................................................................................................... 295

20 Display Control .............................................................................................................297

20.1 To Select the Display Type ...........................................................................................................297

20.2 To Set the Persistence Time ........................................................................................................ 297

20.3 To Set the Waveform Intensity ...................................................................................................298

20.4 To Set the Screen Grid ...................................................................................................................298

20.5 To Set the Grid Brightness ...........................................................................................................299

20.6 Show Scale ........................................................................................................................................ 299

20.7 Color Grade .......................................................................................................................................299

20.8 Waveform Freeze ............................................................................................................................299

21 Function/Arbitrary Waveform Generator (Option) ..........................................301

21.1 To Output Basic Waveforms ........................................................................................................301

21.1.1 To Output Sine ....................................................................................................................301

VII

21.1.2 To Output Square .............................................................................................................. 303

21.1.3 To Output Ramp .................................................................................................................303

21.1.4 To Output Pulse ..................................................................................................................304

21.1.5 To Output DC ...................................................................................................................... 304

21.1.6 To Output Noise .................................................................................................................305

21.1.7 Sinc ......................................................................................................................................... 305

21.1.8 Exp.Rise ................................................................................................................................. 306

21.1.9 Exp.Fall ...................................................................................................................................307

21.1.10 ECG ..........................................................................................................................................307

21.1.11 Gauss ......................................................................................................................................308

21.1.12 Lorentz ...................................................................................................................................309

21.1.13 Haversine ..............................................................................................................................310

21.2 To Output the Arbitrary Waveform .......................................................................................... 311

21.2.1 To Load the Channel and Waveform ...........................................................................311

21.2.2 To Create the Waveforms ................................................................................................312

21.2.3 To Edit the Waveforms .....................................................................................................314

21.3 Modulation ....................................................................................................................................... 316

21.3.1 AM ...........................................................................................................................................316

21.3.2 FM ........................................................................................................................................... 317

21.3.3 FSK .......................................................................................................................................... 318

21.4 Sweep ..................................................................................................................................................319

21.5 Burst .................................................................................................................................................... 321

22 Store and Load ............................................................................................................. 323

22.1 Storage System ................................................................................................................................323

22.2 Storage Type .....................................................................................................................................323

22.2.1 Binary Data Format (.bin) ................................................................................................326

22.3 Load Type .......................................................................................................................................... 329

22.4 Internal Storage and Load ........................................................................................................... 329

22.5 External Storage and Load ...........................................................................................................331

22.6 Disk Management .......................................................................................................................... 332

22.6.1 To Select the File Type ......................................................................................................333

22.6.2 To Create a Folder ..............................................................................................................333

22.6.3 To Delete a File or Folder ................................................................................................337

22.6.4 To Copy and Paste a File or Folder .............................................................................. 338

22.6.5 To Rename a File or Folder .............................................................................................339

22.6.6 To Clear the Internal Memory Safely .......................................................................... 339

22.7 Factory Settings ...............................................................................................................................339

VIII

23 System Utility Function Setting ..............................................................................359

23.1 Remote Interface Configuration ................................................................................................359

23.1.1 LAN Configuration ............................................................................................................ 359

23.1.2 To Set mDNS ....................................................................................................................... 362

23.1.3 To Set the Host Name ......................................................................................................362

23.1.4 To Set the GPIB address ...................................................................................................362

23.1.5 To Set HDMI .........................................................................................................................362

23.1.6 USB Connection ................................................................................................................. 363

23.2 System-related .................................................................................................................................363

23.2.1 Beeper ....................................................................................................................................363

23.2.2 Language ..............................................................................................................................363

23.2.3 System Information ...........................................................................................................363

23.2.4 Power On .............................................................................................................................. 364

23.2.5 Power Status ........................................................................................................................364

23.2.6 Aux Output .......................................................................................................................... 364

23.2.7 Ref Clock ...............................................................................................................................365

23.2.8 Help Menu ........................................................................................................................... 365

23.2.9 SelfCal ....................................................................................................................................366

23.2.10 Auto Config ..........................................................................................................................367

23.2.11 Print Setting .........................................................................................................................367

23.2.12 Email .......................................................................................................................................369

23.2.13 Key Locker ............................................................................................................................ 370

23.2.14 Quick Operation .................................................................................................................371

23.2.15 Screen Saver ........................................................................................................................ 374

23.2.16 Self-check ............................................................................................................................. 375

23.2.17 System Time ........................................................................................................................ 376

23.2.18 Default Option ....................................................................................................................377

24 Remote Control ............................................................................................................379

24.1 Remote Control via USB ...............................................................................................................380

24.2 Remote Control via LAN ...............................................................................................................380

24.3 Remote Control via GPIB ..............................................................................................................381

25 Troubleshooting ...........................................................................................................383

26 Appendix ........................................................................................................................385

26.1 Appendix A: Options and Accessories .................................................................................... 385

26.2 Appendix B: Warranty ................................................................................................................... 386

Index.............................................................................................................................................387

List of Figures

Figure 4.1 Front View ..............................................................................................................

Figure 4.2 Vertical View ......................................................................................................... 13

Figure 4.3 To Adjust the Supporting Legs .......................................................................14

Figure 4.4 To Connect to AC Power ...................................................................................14

Figure 4.5 Fuse Replacement ...............................................................................................16

Figure 4.6 Connect the Passive Probe .............................................................................. 17

Figure 4.7 To Connect the Probe Head to the Preamp of the Active Probe ....... 17

Figure 4.8 Connect the Active Probe ................................................................................ 18

Figure 4.9 Connect the logic probe ...................................................................................19

Figure 4.10 To Use the Compensation Signal ................................................................19

Figure 4.11 Square Waveform Signal ................................................................................20

Figure 4.12 Probe Compensation ...................................................................................... 21

Figure 4.13 Front Panel Overview ...................................................................................... 21

Figure 4.14 Rear Panel Overview ........................................................................................23

Figure 4.15 User Interface .....................................................................................................32

Figure 4.16 Tap Gesture .........................................................................................................37

Figure 4.17 Pinch & Stretch Gesture .................................................................................38

Figure 4.18 Drag Gesture ......................................................................................................38

Figure 4.19 Rectangle Drawing Gesture(a) ..................................................................... 39

Figure 4.20 Rectangle Drawing Gesture(b) .....................................................................39

Figure 4.21 Numeric Keypad ................................................................................................41

Figure 4.22 To Use the Security Lock ................................................................................42

Figure 4.23 Help Information .............................................................................................. 43

Figure 5.1 Waveform Invert ..................................................................................................55

Figure 5.2 Zero Offset ............................................................................................................ 57

Figure 5.3 Label Editing Interface ...................................................................................... 58

Figure 6.1 Delayed Sweep Mode ........................................................................................63

Figure 7.1 Measurement Schematic Diagram of Phase Deviation ......................... 66

Figure 7.2 Waveforms before Averaging .........................................................................69

Figure 7.3 Waveforms after 128 Times of Averaging ..................................................69

Figure 7.4 Memory Depth .................................................................................................... 73

Figure 8.1 Schematic Diagram of the Acquisition Memory ......................................78

Figure 8.2 Schematic Diagram of Trigger Holdoff ........................................................81

Figure 8.3 Positive Pulse Width/Negative Pulse Width ..............................................83

Figure 8.4 Positive Slope Time/Negative Slope Time ................................................. 86

Figure 8.5 Pattern Trigger ..................................................................................................... 92

Figure 8.6 Virtual Keypad for Pattern Setting ................................................................93

Figure 8.7 Duration Trigger .................................................................................................. 95

Figure 8.8 Timeout Trigger ................................................................................................... 97

Figure 8.9 Runt Trigger .......................................................................................................... 99

Figure 8.10 Delay Trigger ....................................................................................................104

Figure 8.11 Setup/Hold Trigger ........................................................................................106

Figure 8.12 Nth Edge Trigger ............................................................................................ 108

Figure 8.13 Schematic Diagram of RS232 Protocol ...................................................110

Figure 8.14 Schematic Diagram of I2C Protocol .........................................................112

Figure 8.15 Virtual Keypad for Binary Data Bit ........................................................... 114

Figure 8.16 Virtual Keypad for Hex Data Bit ................................................................115

Figure 8.17 Sequential Chart of SPI Bus ........................................................................116

Figure 8.18 Data Frame Format of the CAN Bus ........................................................ 118

Figure 8.19 Sample Position ..............................................................................................120

Figure 8.20 Frame Format of FlexRay Bus .................................................................... 121

Figure 8.21 Data Frame Format of the LIN Bus .......................................................... 124

Figure 8.22 Sample Position ..............................................................................................126

Figure 8.23 Sequential Chart of I2S Bus ........................................................................127

Figure 8.24 Formats of the Command Word, Data Word, and Status Word of

the 1553B Bus ....................................................................................................................

130

Figure 8.25 Trigger Output Connector ...........................................................................135

Figure 9.1 Time Parameters ............................................................................................... 174

Figure 9.2 Voltage Parameters ..........................................................................................179

Figure 9.3 Manual Cursor Measurement Example .....................................................193

Figure 9.4 Lissajous Schematic Diagram .......................................................................198

Figure 11.1 Connection Diagram of Power Quality Analysis ..................................206

Figure 11.2 Connection Diagram of Ripple Analysis .................................................208

Figure 13.1 Diagram of Eye Measurement Parameters ............................................217

Figure 15.1 Schematic Diagram of Parallel Decoding .............................................. 230

Figure 15.2 Parallel Decoding Event Table ....................................................................234

Figure 15.3 Schematic Diagram of RS232 Serial Bus ................................................ 236

Figure 15.4 Schematic Diagram of Negative Logic ................................................... 236

Figure 15.5 I2C Serial Bus ...................................................................................................243

Figure 15.6 I2C Decoding Event Table ........................................................................... 246

Figure 15.7 SPI Serial Bus ................................................................................................... 249

Figure 15.8 SPI Decoding Event Table ............................................................................253

Figure 15.9 LIN Decoding Event Table ........................................................................... 257

Figure 15.10 Sample Position ............................................................................................262

Figure 15.11 CAN Decoding Event Table ...................................................................... 264

Figure 15.12 Sample Position ............................................................................................268

Figure 15.13 FlexRay Decoding Event Table ................................................................ 269

Figure 15.14 I2S Decoding Event Table ......................................................................... 274

Figure 15.15 1553B Decoding Event Table ...................................................................277

Figure 18.1 Recording Process ..........................................................................................290

Figure 21.1 Symmetry Definition .....................................................................................303

Figure 21.2 Duty Cycle Definition ....................................................................................304

Figure 21.3 Sinc ......................................................................................................................306

Figure 21.4 Exp.Rise ..............................................................................................................306

Figure 21.5 Exp.FallExp.Fall .................................................................................................307

XII

Figure 21.6 ECG ......................................................................................................................308

Figure 21.7 Gauss ..................................................................................................................309

Figure 21.8 Lorentz ...............................................................................................................310

Figure 21.9 Haversine .......................................................................................................... 311

Figure 21.10 AM .....................................................................................................................316

Figure 21.11 FM .....................................................................................................................317

Figure 22.1 Disk Management Interface .......................................................................333

Figure 22.2 Create a Folder ................................................................................................334

Figure 23.1 Network Connection Setting Interface ...................................................359

Figure 23.2 SelfCal ................................................................................................................ 367

Figure 24.1 Search for the Available Device .................................................................382

Figure 24.2 Confirm the Available Device .....................................................................382

XIII

List of Tables

Table 4.1 Front Panel Description .......................................................................................

Table 5.2 BW Limit ...................................................................................................................52

Table 5.3 Probe Ratio ..............................................................................................................53

Table 9.1 Window Function ................................................................................................146

Table 9.2 Logic "AND" Operation .................................................................................... 147

Table 9.3 Logic "OR" Operation ........................................................................................149

Table 9.4 Logic "XOR" Operation .....................................................................................151

Table 9.5 Logic "NOT" Operation .....................................................................................152

Table 22.4 Factory Settings ................................................................................................339

XIV

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

• 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 that any damage may occur 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.

• Provide Adequate 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

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

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 +70℃

Humidity

• Operating:

Below +30℃: ≤90%RH (without condensation)

+30℃ to +40℃: ≤75% RH (without condensation)

Safety Requirement

+40℃ to +50℃: ≤45%RH (without condensation)

• Non-operating:

Below +65℃: ≤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.

• Pollution Degree 3: Conductive pollution or dry nonconductive pollution that

becomes conductive due to condensation occurs. To be found in industrial

Safety Requirement

environment or construction sites (harsh environments). 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

appropriately to ensure that most materials are reused or recycled properly. Please

contact your local authorities for disposal or recycling information.

Safety Requirement

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

MSO8000A Series Overview

MSO8000A series digital oscilloscope developed by RIGOL is a medium and high-end

mixed signal digital oscilloscope designed on UltraVision II technical platform. With

the analog bandwidth up to 2 GHz, the digital oscilloscope integrates 7 instruments

into one, with 500 Mpts memory depth, sound waveform display effects, excellent

waveform capture rate, and powerful data analysis functions. Many of its

specifications have reached the top level in the industry. Meanwhile, it supports the

real-time eye diagram measurement and jitter analysis. Its cost-effective features and

high performance make it prominent as the 2 GHz mixed signal digital oscilloscope.

Main Features:

• Analog channel bandwidth: 750 MHz, 1.5 GHz, and 2 GHz

• 4 analog channels and 1 EXT channel,16 digital channels (required to purchase

the probe)

• Up to 10 GSa/s real-time sample rate

• Max. memory depth: 500 Mpts (std.)

• Waveform capture rate 600,000 wfms/s

• Recording and playback for a maximum of 450,000 frames of hardware real-time

and ceaseless waveforms

• Integrates 7 independent instruments into 1, including digital oscilloscope, 16-

channel logic analyzer, spectrum analyzer, arbitrary waveform generator (option),

digital voltmeter, 6-digit frequency counter and totalizer, and protocol analyzer

(option)

• Provides auto measurement for up to 41 waveform parameters, offers full-

memory hardware measurement function

• Various math operations, built-in powerful FFT analysis and peak search

functions

• Histogram analysis (standard)

• Independent search, navigation key, and event table

• Real-time eye diagram and jitter analysis software (option)

• Advanced built-in power analysis software (option)

MSO8000A Series Overview

• User-defined one-key quick operation

• 10.1-inch capacitive multi-touch screen, 256-level intensity grading display, with

color persistence

• Multiple interfaces available: USB HOST & DEVICE, LAN (LXI), HDMI, TRIG OUT,

and USB-GPIB

• Web Control remote command

• Unique online upgrade

• Compact and portable industrial design, easy to operate

MSO8000A Series Overview

Document Overview

This manual gives you a quick review about the front and rear panel of MSO8000A

series, the user interface, and the basic operation method.

TIP

For the latest version of this manual, download it from the official website of RIGOL (

http://

www.rigol.com

Publication Number

UGA31100-1110

Format Conventions in this Manual:

1. Key

The front panel key is denoted by menu key icon. For example,

indicates

the "Default" key.

2. Menu

The menu items are denoted by the format of "Menu Word (Bold) + Character

Shading". For example,

System denotes the "System" menu item under the

menu.

3. Operation Procedures:

">" denotes the next step of operation. For example, > System denotes that

first press , and then press the System key.

4. Connector

The connectors on the front or rear panel are usually denoted by the format of

"Connector Name (Bold) + Square Brackets (Bold)". For example, [TRIG OUT].

5. Knob

Label Knob Label Knob

Horizontal

SCALE

Horizontal Scale

Knob

Vertical

SCALE

Vertical Scale

Knob

Horizontal

POSITION

Horizontal

Position Knob

Vertical

OFFSET

Vertical Offset

Knob

Document Overview

Label Knob Label Knob

Wave Vertical

SCALE

Vertical Scale

Knob

Trigger

LEVEL

Trigger Level

Knob

Wave Vertical

POSITION

Wave Vertical

Position Knob

Multifunction

knob

Content Conventions in this Manual:

MSO8000A series includes the following models. Unless otherwise specified, this

manual takes MSO8204A as an example to illustrate the functions and operation

methods of the MSO8000A series.

Model

Max. Analog

Bandwidth

No. of Digital

Channels

No. of

Analog

Channels

No. of AWG

Channels

MSO8074A 750 MHz 16 4 2

MSO8154A 1.5 GHz 16 4 2

MSO8204A 2 GHz 16 4 2

Document Overview

Quick Start

This chapter introduces the precautions when using the oscilloscope for the first time,

the front/rear panels of the oscilloscope, the user interface, touch screen controls, and

how to use the built-in help system.

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.

Quick Start

4.2 Appearance and Dimensions

Figure 4.1 Front View

134.2mm

Figure 4.2 Vertical View

4.3 To Prepare for Use

4.3.1 To Adjust the Supporting Legs

Adjust the supporting legs properly to use them as stands to tilt the oscilloscope

upwards for stable placement of the oscilloscope as well as better operation and

observation. Users can also fold the supporting legs when the instrument is not in

use for easier storage or shipment, as shown in the figure below.

Quick Start

Supporting Legs

(a) To unfold the supporting legs

(b) To fold the supporting legs

Figure 4.3 To Adjust the Supporting Legs

4.3.2 To Connect to AC Power

The input AC power requirements of the oscilloscope are 100 V-240 V, 45 Hz-440 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.

Power Cord Connector

Figure 4.4 To Connect to AC Power

WARNING

To avoid electric shock, ensure that the instrument is correctly grounded.

4.3.3 Turn-on Checkout

When the oscilloscope is connected to power, press the Power key at the lower-left

corner of the front panel to start the oscilloscope. (You can also press > System

> Power status, and select "Switch On". After the instrument is connected to power

source, it will start directly.) You can also enable the touch screen to perform the

above operations.) During the start-up process, all the backlights of the front-panel

Quick Start

keys are illuminated for a few seconds. The oscilloscope starts to perform a series of

self-tests. After the self-test, the splash screen is displayed.

NOTE

Restart and Shutdown:

1. Enable the touch screen and then tap the function navigation icon at the lower-left

corner of the touch screen to enable the function navigation.

2. Tap the "Restart" icon, and then you can select "Restart" or "Shutdown", as shown in the

figure below.

3. If you tap "Restart" , the oscilloscope powers off and then automatically restarts again.

If you tap "Shutdown"

, the oscilloscope powers off (you can also press the Power key

at the lower-left corner of the front panel to turn off the oscilloscope).

4.3.4 Fuse Replacement

If you need to replace the fuse, please use the specified fuse (AC 250 V, T3.15 A; 5.2

mm × 20 mm) and perform the following operations (as shown in

Figure 4.5

1. Turn off the instrument, cut off the power, and remove the power cord.

2. Use a small straight slotted screwdriver to pry out the fuse holder.

3. Take out the fuse holder.

4. Replace the old fuse with a specified fuse.

5. Install the fuse holder.

Quick Start

Fuse Holder

Fuse

Figure 4.5 Fuse Replacement

WARNING

To avoid electric shock, please ensure that the instrument has been turned off, the power

source has been cut off, and the fuse to be used conforms to the fuse rating.

4.3.5 To Connect the Probe

RIGOL provides the passive probe, the active probe, and the logic probe for the

MSO8000A series. For specific probe models, please refer to

MSO8000A Datasheet

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

Figure 4.6

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.

Quick Start

Figure 4.6 Connect the Passive Probe

After you connect the passive probe, check the probe function and probe

compensation adjustment before making measurements. For detailed procedures,

refer to "

Function Inspection

" and "

Probe Compensation

Connect the active probe:

Take RP7150 (active differential probe head) as an example.

1. Connect the probe head to the preamp of the active probe, as shown in

Figure

4.7

Figure 4.7 To Connect the Probe Head to the Preamp of the Active Probe

2. Connect the other end of the preamp to an analog channel input terminal of the

oscilloscope on the front panel, as shown in the figure below.

3. Note that you need to push the probe to the due position to lock it firmly.

Quick Start

Figure 4.8 Connect the Active Probe

4. Use the probe's auxiliary device to connect the probe head to the circuit under

test. For details about the probes, refer to

RP7000 Series Active Probe User Guide

After you connect the active probe, you can make probe calibration and offset

voltage adjustment.

Connect the logic probe

1. Connect the output terminal of the logic probe to the digital channel input

terminal on the front panel of the oscilloscope in the correct direction, as shown in

Figure 4.9

2. Connect the other terminal of the logic probe to the signal terminal under test.

RIGOL's MSO8000A series has a standard configuration of a logic probe RPL2316.

To apply to different application scenarios, RPL2316 provides three connection

methods to connect the signal under test. For details, refer to

RPL2316 Logic Probe

User Guide

Quick Start

Figure 4.9 Connect the logic probe

NOTE

• Before you connect the logic probe to the signal under test, connect logic probe's

adapter provided in the accessories to its corresponding channel group.

• The digital channel input terminal does not support hot plugging. Please do not insert or

pull out the logic probe when the instrument is in power-on state.

4.3.6 Function Inspection

1. Press on the front panel, then a prompt message "Restore default

settings?" is displayed. Press OK or tap OK to restore the instrument to its factory

default settings.

2. Connect the ground alligator clip of the probe to the "Ground Terminal" as shown

Figure 4.10

3. Use the probe to connect the input terminal of CH1 of the oscilloscope and the

"Compensation Signal Output Terminal" of the probe, as shown in

Figure 4.10

Compensation Signal Output Terminal

Ground Terminal

Figure 4.10 To Use the Compensation Signal

4. Set the probe attenuation to 10X, and then press

Quick Start

5. Observe the waveform on the display. In normal condition, the square waveform as

shown in

Figure 4.11

should be displayed.

Figure 4.11 Square Waveform Signal

6. Use the same method to test the other channels. If the square waveforms actually

shown do not match that in the figure above, please perform "

Probe

Compensation

" introduced in the next section.

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.

4.3.7 Probe Compensation

When the probes are used for the first time, you should compensate the probes to

make them match the input channels of the oscilloscope. Non-compensated or

poorly compensated probes may cause measurement inaccuracy or errors. The probe

compensation procedures are as follows:

1. Perform Step 1, 2, 3 and 4 specified in "

Function Inspection

2. Check the displayed waveforms and compare them with the waveforms shown in

Figure 4.12

Quick Start

Over compensated Under compensatedPerfectly compensated

Figure 4.12 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

Figure 4.12

4.4 Front Panel Overview

1415

1 2

4 5

7 8 109

1311

Figure 4.13 Front Panel Overview

Table 4.1 Front Panel Description

No. Description No. Description

1 Capacitive Touch Screen 11 RUN/STOP Key

Quick Start

No. Description No. Description

Function Menu Operation

Keys

12 Single Trigger Control Key

3 Quick Key (Shortcut Key) 13 Trigger Control System

4 Multifunction Knob 14 Vertical Control System

5 Common Operation Keys 15 Analog Channel Input Terminals

6 Touch Lock Key 16

Probe Compensation Signal Output

Terminal/Ground Terminal

7 Horizontal Control System 17 Digital Channel Input Interface

8 CLEAR Key 18

Dual-channel Function/Arbitrary

Waveform Generator Output

Terminals

[1]

9 Auto Waveform Display Key 19 USB HOST Interface

10 Waveform Control System 20 Power Key

NOTE

[1]

: This function is only available for the model installed with the MSO8000-AWG option.

Quick Start

4.5 Rear Panel Overview

10 9 8

Figure 4.14 Rear Panel Overview

1. Handle

Rotate the handle upright to carry the instrument easily. Rotate it downward if you

do not need to carry it.

LAN Interface

Connect the instrument to network via this interface. The instrument is in

compliance with the standards specified in LXI Device Specification 2011. It can be

used to set up a test system.

When you access to the Internet, you can use the Web Control or PC software

Ultra Scope to send the SCPI commands or use the user-defined programming to

control the instrument. When update is available, you can perform online

upgrading for the system software of the instrument via the LAN interface. After it

is connected to the network, you can print the waveform displayed on the screen

when you use the network printer.

TIP

Quick Start

After the oscilloscope is connected to network (if you do not have the access to the

Internet, please ask the administrator to open the specified network authority), you can

perform online upgrading for the system software:

1. Enable the touch screen and then tap the function navigation icon

at the lower-left

corner of the touch screen to enable the function navigation.

2. Tap the "Help" icon, and then the "Help" menu is displayed on the screen.

3. Press Online upgrade or enable the touch screen to tap "Online upgrade", then a

"System Update Information" window is displayed, requesting you whether to accept or

cancel "RIGOL TERMS OF ONLINE UPGRADE SERVICE". Tap "Accept" to start online

upgrade. Tap "Cancel" to cancel the online upgrade.

3. USB DEVICE Interface

You can 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.

USB HOST Interface

You can connect the storage device that is compatible with the USB to the

instrument via the USB HOST interface.

Connecting the storage device can save or recall the waveform files and setup files,

as well as save the data and screen image. When update is available, you can

perform local upgrading for the system software of the instrument via the USB

HOST interface.

NOTE

Perform local upgrading for the system software:

1. Insert the USB storage device (stored with upgrading files under its root directory) into

the USB HOST interface, and then the "Help" menu is automatically displayed.

2. Press

Local upgrade or enable the touch screen to tap "Local upgrade", then a dialog

box "Upgrade system firmware?" is displayed.

3. Press OK or enable the touch screen to tap "OK" to start local upgrade for the

oscilloscope. If you tap "Cancel", the local upgrade will be cancelled.

5. HDMI Video Output

Through this interface, you can connect the instrument to an external display (e.g.

monitor or projector) equipped with the HDMI interface to better observe the

waveform display clearly. At this time, you can also view the waveforms on the LCD

of the instrument.

6. 10 M In/Out

Indicates the reference clock. It can provide accurate sample clock signal for the

oscilloscope, and can be used to synchronize the clock of two or multiple

oscilloscopes.

Quick Start

7. EXT TRIG

Inputs the external signal via the external input terminal.

8. Trigger Out and Pass/Fail

- TRIG OUT

The oscilloscope can output a signal that can reflect the current capture rate of

the oscilloscope at each trigger 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

The instrument can output a pulse from the [TRIG OUT] connector when a

pass/failed event is detected during the pass/fail test.

9. Lock Hole

You can lock the instrument to a fixed location by using the security lock (please

purchase it by yourself) via the lock hole.

10. Fuse

If you need to replace the fuse, use only the specified fuse. For details, refer to

descriptions in "

Fuse Replacement

11. AC Power Cord Connector

Indicates the input terminal where AC power source is connected. The power

supply requirements of the instrument are: 100 V~240 V; 45 Hz~ 440 Hz. Please

use the power cord provided in the accessories to connect the oscilloscope to the

AC power source.

4.6 Front Panel Function Overview

4.6.1 Vertical

• , , , : indicates the analog channel switch key. The four channels are

marked by different colors which are also used to mark both the corresponding

Quick Start

waveforms of the specified channel on the screen and the channel input

connectors.

•

, : indicates the Function/Arbitrary Waveform Generator key. Press GI

to enable or disable the output of the [GI] connector on the front panel; press

GII to enable or disable the output of the [GII] connector on the front panel;

and then enter the corresponding signal source setting interface. Enable or

disable the status display of the current signal.

NOTE

This function is only available for model installed with the MSO8000-AWG option.

• : indicates the default setting key. Press this key to restore the

instrument to its factory default settings.

• Vertical OFFSET: indicates the channel vertical offset knob. You can rotate

the knob to modify the vertical offset of the current channel waveform. Each

analog channel is configured with an independent vertical offset adjustment

knob. Turn it clockwise to increase the offset, and turn it counterclockwise to

decrease the offset. During the modification, the waveform would move up and

down. Meanwhile, the offset information in the corresponding status label

would change accordingly. Press down this knob to quickly reset the vertical

offset to zero.

• Vertical SCALE: indicates the channel vertical scale knob. It is used to modify

the vertical scale of the current channel. Each analog channel is configured with

an independent vertical scale adjustment knob. Turn it clockwise to decrease

the scale, and turn it counterclockwise to increase the scale. During the

modification, the display amplitude of the waveform will enlarge or reduce. The

scale information in the corresponding status label will change accordingly.

Press down this knob to quickly switch the vertical scale adjustment mode

between "Coarse" and "Fine".

4.6.2 Horizontal

• : indicates the delayed sweep key. Press this key to enable or disable the

delayed sweep function.

Quick Start

• : indicates the Search key. Press this key to enter the search setting menu.

The search function allows you to search for relevant events from the collected

data based on the user-set search condition.

•

: indicates the navigation combination key. With the

combination keys, you can perform recording&playing navigation, time

navigation, and event navigation.

• Horizontal POSITION: indicates the horizontal position knob. Rotate the

knob to modify the horizontal position (i.g. trigger position). The trigger point

would move left or right relative to the center of the screen when you rotate the

knob. During the modification, waveforms of all the channels would move left or

right, and the horizontal position message (e.g. ) at the upper-right

corner of the screen would change accordingly. Press down this knob to quickly

reset the horizontal position (or the delayed sweep position).

• Horizontal SCALE: indicates the horizontal time base knob. You can rotate

the knob to modify the horizontal time base. Turn it clockwise to decrease the

time base, and turn it counterclockwise to increase the time base. During the

modification, waveforms of all the channels will be displayed in expanded or

compressed form, and the time base message (e.g. ) at the upper section

of the screen would change accordingly. Press down this knob to quickly switch

the horizontal time base adjustment mode between "Coarse" and "Fine".

Quick Start

4.6.3 Wave

• : indicates the math operation key. Press this key to enable the math

operation function. The math operations include A+B, A-B, A×B, A/B, FFT, and

etc. Besides, you can also set the math operation label.

• : indicates the logic analyzer key. Press this key to open the logic analyzer

control menu. You can enable or disable any channel or channel group, modify

the waveform sizes of the digital channel, modify the threshold of the digital

channel, and group the 16 digital channels. Besides, you can also set a label for

each digital channel.

• : indicates the reference waveform key. Press this key to open the reference

waveform setting menu. You can compare the actually measured waveform with

the reference waveform to locate the circuit failure.

• : indicates the decode key. Press this key to open the decode setting menu,

and then you can set the decode options. This series of oscilloscope supports

the parallel decoding and many protocol decodings. (For details, refer to the

descriptions in "

Protocol Decoding

").

• Wave Vertical POSITION: indicates the waveform vertical position knob.

Rotate the knob to adjust the vertical position of the current digital channel

waveform, the vertical position of the math operation waveform, the vertical

Quick Start

position of the reference waveform, or the vertical display position of the bus

decoding.

• Wave Vertical SCALE: indicates the waveform vertical scale knob. Rotate the

knob to adjust the vertical scale of math operation waveform or the vertical scale

of the reference waveform, and also can adjust the size of the displayed digital

channel waveforms.

4.6.4 Trigger

• : Press this key to open the trigger operation menu.

This oscilloscope provides various trigger types.

• : Press this key to switch the trigger mode to Auto,

Normal, or SINGLE.

• : Press this key to generate a trigger signal forcibly.

• Trigger LEVEL: modifies the trigger level/threshold level.

Turn it clockwise to increase the level, and turn it

counterclockwise to decrease the level. During the

modification, the trigger level line would move up and down

and the trigger level/threshold level value at the upper-right

corner of the screen would change accordingly. Press down

the knob to quickly set the trigger level to 50% of the

waveform peak-peak value.

4.6.5 Clear

Press this key to clear all the waveforms on the screen. If the

oscilloscope is in the "RUN" state, new waveforms will continue

being displayed.

4.6.6 Auto

Press this key to enable the waveform auto setting function.

The oscilloscope will automatically adjust the vertical scale,

horizontal time base, and trigger mode according to the input

signal to realize optimal waveform display.

Quick Start

4.6.7 RUN/STOP

Press this key to set the operating state of the oscilloscope to

"RUN" or "STOP". In the "RUN" state, the key is illuminated in

yellow. In the "STOP" state, the key is illuminated in red.

4.6.8 Single

Press this key to set the trigger mode to "Single".

4.6.9 Multifunction knob

• Non-menu Operation:

In non-menu-operation mode, rotate this knob to adjust the brightness of

waveform display. The settable screen brightness ranges from 1% to 100%. Turn

it clockwise to increase the brightness, and turn it counterclockwise to decrease

the brightness. Press > Intensity to adjust the waveform brightness. You

can also use the knob to adjust it.

• Menu Operation:

When you operate on the menu, the backlight of the knob is illuminated. For the

menu item that has multiple parameters under it, when you press the menu

softkey, rotate the knob to select the parameter item, then press down the knob

to select the item (sometimes, the specified parameter item can be selected by

rotating the knob). The knob can also be used to modify parameters, input

filenames, etc.

4.6.10 Function Menu

Quick Start

: Press this key to enter the measurement setting menu. You can set the

measurement source, enable or disable the all measurement function, the statistical

analysis function, and etc. You can make a quick measurement for 41 waveform

parameters.

: Press this key to enter the acquisition setting menu. You can set the time base

mode, the acquisition mode, memory depth, and etc.

: Press this key to enter the file or waveform storage and load interface. The file

types for storage include image, waveform, and setups. Besides, waveform load and

setup load are supported. The disk management and file auto naming function are

also supported in this menu.

: Press this key to enter the cursor measurement menu. The oscilloscope

provides four cursor modes: Manual, Track, XY, and Measure. Note that XY cursor

mode is only available when the horizontal time base is set to "XY".

: Press this key to enter the Display setting menu. You can set the display type,

persistence time, wave intensity, and etc.

: Press this key to enter the system function setting menu. You can set system-

related functions or parameters, such as I/O, sound, language, and etc. Besides, some

advanced functions (such as the pass/fail test, waveform recording, and self-

calibration) are also supported.

4.6.11 Touch Lock Key

Press this key to disable the touch screen function.

NOTE

By default, the touch screen function of the oscilloscope is always enabled. If you disable the

function, press the key again to enable it.

4.6.12 Quick key (shortcut key)

Press this key to perform the quick operation, including screenshot,

waveform saving, setup saving, all measurement, statistics reset, and etc.

Press > More > Quick settings to set the quick shortcut keys.

Quick Start

4.7 User Interface

MSO8000A series has a 10.1-inch WSVGA (1024×600) LCD, with 256 level gray-scale

display. The user interface displays the acquired waveforms, the setting information,

and the measurement results.

2 3 4 5 8

6 7 9 10 11 12

13141516

1718

19202122

Figure 4.15 User Interface

1. Analog Channel Label/Waveform

Different channels are marked with different colors. The color of the channel label

is the same as that of the waveform.

2. Operating Status

The available states include RUN, STOP, T'D (triggered), WAIT, and AUTO.

3. Horizontal Time Base

- Represents the time length per grid in the horizontal axis of the screen.

- Use Horizontal

SCALE to modify this parameter. The adjustable range of the

horizontal time base is different for different models.

4. Sample Rate/Memory Depth

- Displays the current sample rate and memory depth of the analog channel.

Quick Start

- The sample rate and the memory depth will change along with the horizontal

time base.

5. Auto Measurement Label

Enable the touch screen, and then tap the label. Up to 41 waveform parameters are

available for auto measurement. It also offers full-memory hardware measurement

function.

6. Save Wave

Provides a diagram of the position of the screen waveform in the memory.

waveform in the memory

screen waveform

7. Trigger Position

Displays the trigger position of the screen waveform and that of the waveform in

the memory.

8. Run/Stop Label

In the run state, the label is displayed in green; while in the stop state, it is

displayed in red. You can enable the touch screen to tap the icon "STOP/RUN" to

control its operating status.

9. Horizontal Position

Use Horizontal

POSITION to modify this parameter. Press down this knob to

quickly reset the horizontal position.

10. Trigger Type

Displays the currently selected trigger type and trigger condition setting. When

you select different trigger types, different labels are displayed. For example,

represents triggering on the rising edge in "Edge" trigger.

11. Source

Displays the currently selected trigger source (CH1-CH4, AC Line, EXT, or D0-D15).

When you select different trigger sources, different labels are displayed. For

example,

denotes that CH1 is selected as the trigger source.

12. Trigger LEVEL/Threshold Level

Quick Start

- When CH1-CH4 or EXT is selected as the trigger source, you need to set a

proper trigger level.

- When D0-D15 is selected as the trigger source, you need to set a proper

threshold level.

- The trigger level label is displayed at the left section of the screen, and the

trigger level/threshold level value is displayed at the upper-right corner of the

screen.

- When you use Trigger LEVEL to modify the trigger level/threshold level, the

trigger level/threshold level value will change with the up and down of .

13. Operation Menu

Press any softkey on the front panel to activate the corresponding menu.

14. Notification Area

Displays the beeper icon, the USB storage device icon, time, and the LAN

connection icon.

- Sound icon: Press > Sound to turn on or off the sound. When the sound

is turned on,

will be displayed; when off, will be displayed.

- USB storage device icon: When a USB storage device is detected, will be

displayed.

- Time: displays the system time. For the system time setting, refer to

descriptions in "

System Time

- LAN connection icon: When the LAN interface is successfully connected,

will be displayed.

15. AWG 2

- Displays the on/off status of AWG 2.

- Displays the waveform type set for the current AWG 2.

- It is only available for the model installed with the MSO8000-AWG option.

Quick Start

16. AWG 1

- Displays the on/off status of AWG 1.

- Displays the waveform type set for the current AWG 1.

- It is only available for the model installed with the MSO8000-AWG option.

17. Digital Channel Status Area

Displays the current status of the 16 digital channels. The digital channels currently

turned on are displayed in green, and the currently selected digital channel is

highlighted in red. The digital channels turned off are displayed in gray.

18. CH4 Status Label

- Displays the status of CH4.

- It displays the vertical scale of CH4. That is, the voltage value per grid of CH4 in

the vertical axis.

- Displays the offset of CH4, i.g. the vertical offset of CH4 waveform.

- Different labels will be displayed according to the current channel setting. For

example, if you select "DC" for channel coupling, is displayed; if you enable

the bandwidth limit, is displayed; if you select "50 Ω" for impedance, is

displayed.

19. Message Box

Displays the prompt messages.

20. CH3 Status Label

- Displays the status of CH3.

- Displays the vertical scale of CH3. That is, the voltage value per grid of CH3 in

the vertical axis.

- Displays the offset of CH3, i.g. the vertical offset of CH3 waveform.

- Different labels will be displayed according to the current channel setting. For

example,if you select "DC" for channel coupling, is displayed; if you enable

the bandwidth limit, is displayed; if you select "50 Ω" for impedance, is

displayed.

Quick Start

21. CH2 Status Label

- Displays the status of CH2.

- Displays the vertical scale of CH2. That is, the voltage value per grid of CH2 in

the vertical axis. Displays the offset of CH2, i.g. the vertical offset of CH2

waveform.

- Different labels will be displayed according to the current channel setting. For

example,if you select "DC" for channel coupling, is displayed; if you enable

the bandwidth limit, is displayed; if you select "50 Ω" for impedance, is

displayed.

22. CH1 Status Label

- Displays the on/off status of CH1.

- Displays the vertical scale of CH1. That is, the voltage value per grid of CH1 in

the vertical axis.

- Displays the offset of CH1, i.g. the vertical offset of CH1 waveform.

- Different labels will be displayed according to the current channel setting. For

example,if you select "DC" for channel coupling, is displayed; if you enable

the bandwidth limit, is displayed; if you select "50 Ω" for impedance, is

displayed.

23. Digital Channel Label/Waveform

The logic high and low level of the digital waveform are displayed in green. Its

edge is displayed in white. The color of the currently selected waveform of the

digital channel is consistent with that of the channel label, being displayed in red.

The grouping setting function under the logic analyzer function menu can divide

the digital channels into 4 channel groups. The channel label of the same channel

group is displayed in the same color; different channel groups are marked with

different colors.

24. Function Navigation

Enable the touch screen and then tap this icon to enable the function navigation.

Quick Start

NOTE

In Slope Trigger, Runt Trigger, and Window trigger, you need to set the upper and lower limits

of the trigger level, and two trigger level labels ( and ) are displayed.

4.8 Touch Screen Controls

MSO8000A series provides a 10.1-inch super large capacitive touch screen, which

supports multi-touch and gesture operation. It has strong waveform display capability

and excellent user experience. It features great convenience, high flexibility, and great

sensitivity. The actions supported by the touch screen controls include tapping,

pinching & stretching, dragging, and rectangle drawing.

TIP

The touch screen function is available for all the menus displayed on the screen and the

buttons enabled. In this manual, key operation descriptions are illustrated in details, and as for

the touch screen function about some operations, refer to descriptions in relevant chapters.

4.8.1 Tap

Use one finger to touch the symbol or characters on the screen slightly, as shown in

Figure 4.16

. With the Tap gesture, you can perform the following operation:

• 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 open the function navigation.

• Tap the displayed numeric keypad to set the parameters.

• Tap the virtual keypad to set the label name and 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.

Figure 4.16 Tap Gesture

Quick Start

4.8.2 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

Figure 4.17

. 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 4.17 Pinch & Stretch Gesture

4.8.3 Drag

Use one finger to select the object, and then drag the object to a destination place, as

shown in

Figure 4.18

. With the drag gesture, you can perform the following

operation:

• Drag the waveform to change its position or scale.

• Drag the window controls to change the position of the window (e.g. numeric

keypad).

• Drag the marker to change the position of the marker.

Figure 4.18 Drag Gesture

Quick Start

4.8.4 Rectangle Drawing

Enable the function navigation, and then tap the "Draw rect" icon to switch to the

rectangle drawing mode. Drag a finger from upper left to lower right across the

screen to draw a rectangle on the screen, as shown in

Figure 4.19

. Move your finger

away from the screen, and then a menu is displayed on the screen. At this time, you

can tap to select "Trigger zone A", "Trigger zone B", "Histogram", "Horizontal zoom

in", "Vertical zoom in", or "Waveform zoom in". Drag a finger from lower right to

upper left across the screen to draw a rectangle on the screen, as shown in

Figure

4.20

. Move your finger away from the screen, and then a menu is displayed on the

screen. At this time, you can tap to select "Trigger zone A", "Trigger zone B",

"Histogram", "Horizontal zoom out", "Vertical zoom out", or "Waveform zoom out".

Figure 4.19 Rectangle Drawing Gesture(a)

Figure 4.20 Rectangle Drawing Gesture(b)

• Select "Trigger zone A":

- Draw the region for Trigger zone A;

- Open Trigger zone A:

- Open the "Zone Trigger" menu.

• Select "Trigger zone B":

Quick Start

- Draw the region for Trigger zone B;

- Open Trigger zone B:

- Open the "Zone Trigger" menu.

• Select "Histogram":

- Draw the region for the histogram;

- Open the "Histogram" menu.

• Select "Horizontal zoom in": expands the waveforms in the horizontal direction.

Select "Horizontal zoom out": compresses the waveforms in the horizontal

direction.

• Select "Vertical zoom in": expands the waveforms in the vertical direction. Select

"Vertical zoom out": compresses the waveforms in the vertical direction.

• Select "Waveform zoom in": expands the waveforms both in the horizontal and

vertical direction. Select "Waveform zoom out": compresses the waveforms both

in the horizontal and vertical direction.

TIP

Tap the "Draw rect" icon to switch between the rectangle drawing and waveform operation

modes.

Tap the "Draw rect" icon, if is displayed, it indicates that the rectangle drawing mode is

enabled. Tap the "Draw rect" icon, if

is displayed, it indicates that the waveform operation

mode is enabled. By default, the waveform operation mode is enabled.

4.9 Parameter Setting Method

You can use the knob or enable the touch screen to set the parameters of MSO8000A

series. The common parameter setting methods are as follows:

Method 1:

For the parameters with the sign , rotate the multifunction knob on the front

panel directly to select the parameter item or modify the parameter value.

Method 2:

Quick Start

For the parameters with the sign , rotate the multifunction knob on the front

panel and then press it down to select the parameter item or modify the parameter

value.

Method 3:

For the parameters with displayed on the menu, rotate the multifunction knob

on the front panel directly to set the parameter, or press down the multifunction knob

or the specified menu softkey, and then the numeric keypad is shown in

Figure

4.21

below.

Parameter Input Field

Delete Key

Max. Value

Min. Value

Default Value

Clear Key

Figure 4.21 Numeric Keypad

In the numeric keypad, rotate the multifunction knob

to select the parameter, then

press down the knob to select it. Then input the value or the unit. You can also enable

the touch screen and tap the value or unit in the numeric keypad to input them. 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 confirm the input

and close the numeric keypad. At this time, the unit of the parameter is the default

unit. In the numeric keypad, you can also perform the following operations:

• Delete the parameter value that has been input.

• Set the parameter to a maximum or minimum value (sometimes, the maximum

or minimum value are the specified one for the current state).

• Set the parameter to a default value.

• Clear the parameter input field.

Method 4:

Quick Start

For the parameters without the above signs, press the desired menu softkey to switch

between the parameter items. This method is applicable to the parameters with only

two available options.

TIP

The above method is commonly used for the parameter settings of the oscilloscope. For other

methods of parameter settings, refer to details in User Guide of this instrument.

4.10 To Use 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

Figure 4.22

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.

Security Lock Hole

Figure 4.22 To Use the Security Lock

NOTE

Please do not insert other objects into the security lock hole to avoid damaging the

instrument.

4.11 To Use the Built-in Help System

The help system of this oscilloscope provides instructions for all the function keys on

the front panel and their corresponding menu keys. The steps for opening the built-in

help system are as follows:

Quick Start

1. Press > System > Help, and then the "Help" menu is displayed on the

screen. You can also use the touch screen function , tap the navigation icon at

the lower-left corner of the touch screen to enable the function navigation. Tap the

"Help" icon, and then the "Help" menu is displayed on the screen.

2. Press the Content menu key or tap the "Content" menu item, then the help

information is displayed on the screen, as shown in

Figure 4.23

. The help interface

mainly consists of two sections. The left section lists "Help Options", and the right

section is the "Help Display Area".

Help Options Help Display Area

Figure 4.23 Help Information

After opening the help interface, you can get its help information in the "Help Display

Area" through the following three methods:

Method 1:

For the key operation, you can directly press the front-panel keys (except the Power

key, key, and the key) to obtain the help information. For the knob operation,

you can rotate the knob or press down the knob to get the help information (except

the multifunction knob , Wave Vertical POSITION, and Wave Vertical

SCALE). As the function of rotating the knob is different from that of pressing down

the knob, these two operations will give you different help information.

Quick Start

Method 2:

In the "Help Options", rotate the multifunction knob to switch among the help

options to get the corresponding help information.

Method 3:

Enable the touch screen and tap the desired help option to get the corresponding

help information.

TIP

• Help information for other keys and buttons:

- Power key: powers on/off the instrument.

- key: displays or hides menus. Pressing this key can hide the menus.

key: returns to the previous menu or last set function menu.

- Multifunction knob

: In non-menu-operation mode, rotate this knob to adjust

the brightness of waveform display. When you operate on the menu, the backlight

of the knob is illuminated. For the menu item that has multiple parameters under it,

when you press the menu softkey, rotate the knob to select the parameter item,

then press down the knob to select it (sometimes, the specified parameter item can

be selected by rotating the knob). The knob can also be used to modify parameters,

input the filename, etc.

- Wave Vertical

POSITION: Rotate the knob to adjust the vertical position of the

current digital channel waveform, the vertical position of the math operation

waveform, the vertical position of the reference waveform, or the vertical display

position of the bus decoding.

- Wave Vertical

SCALE: Rotate the knob to adjust the vertical scale of math

operation waveform or the vertical scale of the reference waveform, and also can

adjust the size of the displayed digital channel waveforms.

• If the menu item is grayed out, you cannot press the corresponding front-panel menu

key to obtain the help information. What you can do is only to follow the above Method

2 or 3 to get the help information.

4.12 To View the Option Information and the Option

Installation

This series of 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 options currently installed on

the oscilloscope or activate the newly purchased option.

1. View the Installed Option

Quick Start

The instrument is installed with the trial versions of the options before leaving

factory. When you power on the instrument for the first time, the trial time is

about 2,160 minutes. If your instrument has currently installed the option, perform

the following operations to view the name of the installed option and other

detailed information about the option from the option list.

a. Press > System > Help, and then the "Help" menu is displayed on the

screen. You can also use the touch screen function , tap the navigation icon

at the lower-left corner of the touch screen to enable the function navigation.

Tap the "Help" icon, and then the "Help" menu is displayed on the screen.

b. Press the Option list or tap the Option list menu item, and then a list of the

options installed is displayed on the screen for users to view.

2. Install the option

The option license is a string of fixed characters. Each instrument has one unique

license. 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 the

license). Then, you can install the option according to the following steps.

a. Obtain an option license

a. Log in to the RIGOL official website (

www.rigol.com

), click SERVICE CENTRE

(Products & Services) > License Activation to enter the license activation

interface.

b. In the software license registration interface, input the correct key, serial

number (press > System > About to obtain the serial number of the

instrument. You can also open the "Help" function menu, and then press

About to obtain the serial number), and the verification code. Click Generate

to obtain the download link of the option license file. If you need to use the

option license file, please click the link to download the file to the root

directory of the USB storage device.

b. Install the option

Quick Start

a. Confirm that the option license file is located in the root directory of the USB

storage device, and connect the USB storage device to the oscilloscope

properly.

b. The Option install key is activated, and press this menu key to start installing

the option.

c. After installation, a prompt message "Option activated successfully" is

displayed.

NOTE

After the option has been installed, you are recommended to restart the instrument.

TIP

• Only 1 option license file of one instrument is allowed to be stored in the same USB

storage device, but the USB storage device can store the option license file of several

different instruments. You are not allowed to modify the licensed filename.

• During the installation process, you are not allowed to power off the instrument or pull

out the USB storage device.

• Sending the SCPI commands (:SYSTem:OPTion:INSTall <license>) to install options is

supported. Installing options by inputting the license code manually is not supported.

Quick Start

To Set the Vertical System

MSO8000A series provides 4 analog input channels (CH1-CH4). Each channel is

equipped with an independent vertical control system. The setting methods for the

vertical systems of the 4 channels are the same. This chapter takes CH1 as an example

to introduce the setting method for the vertical system. By default, only CH1 is

enabled.

5.1 To Enable or Disable the Analog Channel

Enable the Analog Channel:

Connect a signal to CH1, and then press in the vertical control area (Vertical) on

the front panel to enable CH1. Then, the backlight of the channel is illuminated. At

this point, the channel setting menu is displayed at the right section of the screen and

the channel is activated. The channel status label at the bottom of the screen is shown

in the figure below. You can also enable the touch screen to tap the channel status

label to enable the channel.

Vertical Scale

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, 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.

If CH1 is enabled but not activated, the channel status label is shown in the following

figure. To activate the channel, press

on the front panel in the vertical control area

(Vertical) or enable the touch screen to tap the waveform activation channel displayed

on the screen.

Disable the Analog Channel:

If the setting menu of the channel that needs to be disabled (the current channel is

activated) is displayed at the right section of the screen, press the channel key to

disable the channel. If the setting menu of the channel that needs to be disabled is

not displayed at the right section of the screen, first open the setting menu of the

channel to be disabled (activate the channel), then press the channel key to disable

the channel. You can also enable the touch screen to tap the channel status label to

To Set the Vertical System

disable the channel. For example, if CH1 and CH2 are enabled and CH2 channel

setting menu is displayed on the screen, then if you need to disable CH1, first activate

CH1, and then press or enable the touch screen to tap CH1 channel status label to

disable CH1. If CH1 is disabled, the channel status label is shown in the following

figure.

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. While you adjust the vertical scale, the display amplitude of

the waveform would enlarge or reduce. The scale information of the channel status

label (e.g. as shown in the following figure) at the lower section of the screen would

change accordingly.

Vertical Scale

The adjustable range of the vertical scale is related to the currently set probe ratio

and input impedance. By default, the probe ratio is 1X and the input impedance is 1

MΩ. In this case, the adjustable range of the vertical scale is from 1 mV/div to 10 V/

div.

When CH1 is turned on, you can adjust the vertical scale with the following three

methods:

• Rotate Vertical

SCALE that corresponds to CH1 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 the "

Pinch &

Stretch

" section.

• Enable the touch screen function, and tap the channel status label at the bottom

of the screen. The following window is displayed. Tap the icon at the right side of

the Scale input field to decrease or increase the scale. You can also tap the input

field to input a specific value with the displayed numeric keypad.

To Set the Vertical System

Value Input Field

Decrease

Increase

In the vertical control area (Vertical) on the front panel, press Vertical SCALE to

adjust the vertical scale in "Coarse" (by default) or "Fine" mode. You can also press

> More > Fine to enable or disable the fine adjustment.

• Fine adjustment: Rotate Vertical SCALE to further adjust the vertical scale

within a relatively smaller range to improve the vertical resolution. If the

amplitude of the input waveform is a little bit greater than the full scale under

the current scale and the amplitude would be 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 (take counterclockwise as an example): Rotate Vertical

SCALE to set the vertical scale at 1-2-5 step, i.e. 1 mV/div, 2 mV/div, 5 mV/div, 10

mV/div…10 V/div.

5.3 Vertical Expansion

When changing the vertical scale of the analog channel by rotating the Vertical

SCALE, you can select to expand or compress the waveform around the "Center" or

"GND" (Ground). By default, "GND" is selected under Expand.

Press > More, then press Expand continuously to select "Center" or "GND".

• Center: when the vertical scale is changed, the waveform will be expanded or

compressed around the screen center.

• GND: when the vertical scale is changed, the waveform will be expanded or

compressed around the signal ground level position.

To Set the Vertical System

5.4 To Adjust the Vertical Offset

Vertical offset indicates the offset of the signal ground level position of the waveform

from the screen center in the vertical direction. Its unit is consistent with the currently

selected amplitude unit (refer to "

Amplitude Unit

"). When adjusting the vertical offset,

the waveforms of the corresponding channel moves 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 input impedance,

probe ratio, and vertical scale.

When CH1 is turned on, you can adjust the vertical offset with the following four

methods:

• Rotate Vertical OFFSET that corresponds to CH1 to adjust the vertical offset

within the adjustable range. Rotate this knob clockwise to increase the vertical

offset, and rotate it counterclockwise to reduce the vertical offset. Pressing down

the knob can quickly reset the vertical offset (set the vertical offset to 0).

• Menu setting: Press > More > Offset, and then the numeric keypad is

displayed. Input the offset value with the numeric keypad.

• Enable the touch screen function, and then adjust the vertical offset with the

drag gesture. For details, refer to the "

Drag

" section.

• Enable the touch screen function, and tap the channel status label at the bottom

of the screen. The following window is displayed. Tap the

icon at the

right side of the Offset input field to decrease or increase the offset. You can also

tap the input field to input a specific value with the displayed numeric keypad.

To Set the Vertical System

Value Input Field

Decrease

Increase

5.5 Channel Coupling

The undesired signals can be filtered out by setting the coupling mode. For example,

the signal under test is a square waveform with DC offset.

• When the coupling mode is "DC": the DC and AC components of the signal

under test can both 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 both blocked.

Press to open the CH1 setting menu.Then, press Coupling continuously or rotate

the multifunction knob to select the desired coupling mode (by default, it is DC).

The current coupling mode is displayed in the channel status label at the bottom of

the screen, as shown in the figure below. You can also enable the touch screen, and

then touch the CH1 setting menu to select the desired coupling mode.

DC AC GND

NOTE

• When the input impedance is set to "50 Ω", the channel coupling is set to DC coupling by

force, and the

Coupling menu is grayed out and cannot be modified.

• When the coupling mode is "AC", the input impedance is set to 1 MΩ by force, and the

Impedance menu is grayed out and cannot be modified.

To Set the Vertical System

5.6 BW 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.

• When the bandwidth limit is disabled, the high frequency components of the

signal under test can pass the channel.

• When you enable the bandwidth limit and limit it to 20 MHz or 250 MHz, the

high frequency components found in the signal under test that are greater than

20 MHz or 250 MHz are attenuated.

Press to open the CH1 setting menu.Then, press BW Limit continuously or rotate

the multifunction knob to select the desired bandwidth limit. Press down the knob

to select it. By default, it is OFF. When the bandwidth limit is enabled, the character

"B" will be displayed in the channel status label at the bottom of the screen. You can

also enable the touch screen to select the desired BW limit.

The bandwidth limit that you select is based on the input impedance of the

oscilloscope, as shown in

Table 5.2 BW Limit

Input Impedance of the Oscilloscope Available Bandwidth Limit

50 Ω 20 M

1 MΩ 20 MHz and 250 MHz

NOTE

Bandwidth limit can not only reduce the noise, but also can attenuate or eliminate the high

frequency components of the signal.

5.7 Probe Ratio

This series oscilloscope allows you to set the probe attenuation manually. To obtain

the correct measurement results, you must set the probe ratio properly. By default,

the probe ratio is 1X.

To Set the Vertical System

Press to open the CH1 setting menu.Then, press Attenuation continuously or

rotate the multifunction knob to select the desired probe ratio. You can also

enable the touch screen, and then tap to select the desired probe ratio. The probe

ratio values available are as shown in the following table.

Table 5.3 Probe Ratio

Attenuation

(display amplitude of the signal under test: actual

amplitude of the signal under test)

0.0001X

0.0002X

0.0005X

0.001X

0.002X

0.005X

0.01X

0.02X

0.05X

0.1X

0.2X

0.5X

1X (default)

10X

20X

50X

100X

200X

500X

1000X

2000X

0.0001:1

0.0002:1

0.0005:1

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

2:1

5:1

10:1

20:1

50:1

100:1

200:1

500:1

1000:1

2000:1

To Set the Vertical System

Attenuation

(display amplitude of the signal under test: actual

amplitude of the signal under test)

5000X

10000X

20000X

50000X

5000:1

10000:1

20000:1

50000:1

NOTE

After the oscilloscope auto-recognized certain probes with a fixed attenuation ratio, the probe

ratio will also be auto recognized. You do not have to set it manually.

5.8 Input Impedance

To reduce the circuit load between the oscilloscope and the circuit under test, this

oscilloscope provides two input impedance modes: 1 MΩ (default) and 50 Ω.

• 1 MΩ: The input impedance of the oscilloscope is very high, and the current

flowed from the circuit under test can be ignored.

• 50 Ω: makes the oscilloscope match with the device whose input impedance is

50 Ω.

Press to open the CH1 setting menu.Then, press Impedance continuously to select

the input impedance of the oscilloscope. If you select "50Ω", the channel status label

at the bottom of the screen will display the icon

NOTE

• After the oscilloscope recognizes the probe automatically, the input impedance will also

be auto recognized. You do not have to set it manually.

• The setting of the input impedance will affect the ranges of channel vertical scale and

offset.

5.9 Waveform Invert

Press to open the CH1 setting menu. Then, press Invert continuously to enable or

disable the waveform invert. When enabled, the channel label is displayed, as shown

in the following figure.

To Set the Vertical System

When the waveform invert is turned off, the waveform is displayed normally; when

the waveform invert is turned on, the voltage values of the displayed waveform are

inverted. Enabling the waveform invert will change the result of math function and

waveform measurement.

Figure 5.1 Waveform Invert

NOTE

When the waveform invert is enabled, the trigger edge or the trigger polarity will change (e.g.

Edge trigger, Pulse trigger, or Slope trigger).

5.10 To Set the Probe

The analog channel of this oscilloscope not only supports the common passive probe,

but also the active probe. It can automatically recognize the currently connected

probe type and its probe ratio. For detailed technical information of the probes,

please refer to the corresponding Probe User Guide.

Press to open the CH1 setting menu. Then, press Probe to open the probe menu.

If different probes are connected to the oscilloscope, different information about the

probe will be displayed, and you can perform the different operations on the menu.

5.10.1 Passive Probe

If a passive probe is connected, for example, when RIGOL RP3500A probe model is

connected to the oscilloscope, press Probe to open the probe menu. Its sub-menus

are grayed out and disabled.

TIP

For some of the ordinary passive probes, the oscilloscope can recognize their probe ratio

automatically. If not recognized, please refer to "

Probe Ratio

" to set the probe ratio.

To Set the Vertical System

5.10.2 Active Probe

If an active probe is connected, for example, when RIGOL RP7150 probe model is

connected to the oscilloscope, press Probe to open the probe menu, then operate on

the menu item.

TIP

• When a 50 Ω active probe is connected, the input impedance (refer to "

Input

Impedance

") of the channel will be automatically set to "50 Ω".

• For the active probe, the oscilloscope can recognize the probe ratio automatically. If the

currently connected probe supports a variety of probe ratios, please refer to

Probe Ratio

to set the probe ratio.

Probe Delay

To avoid measurement result errors arising from the transmission delay of the probe

cable, the oscilloscope provides the probe delay adjustment function for the active

probe. Press

Skew, then rotate the multifunction knob or use the pop-up numeric

keypad to set the probe delay.

Bias Voltage

The oscilloscope provides the bias voltage adjustment function for active probes. This

function is used to adjust the signal under test that exceeds the input dynamic range

of the probe amplifier to an appropriate range to ensure the integrity of the signal

under test. Press Bias, rotate the multifunction knob or use the pop-up numeric

keypad to set the DC bias voltage.

Probe Information

Press About to view information about the probe currently connected, such as the

manufacturer, model, serial number, and the last calibration date.

Probe Calibration

Press Calibration to start zero calibration automatically for the probe.

5.11 Amplitude Unit

Sets the amplitude display unit for the current channel. The available units are W, A, V,

and U. When the amplitude unit is changed, the unit related to the channel will also

be changed accordingly.

Press > More > Unit, then press Unit continuously or rotate the multifunction

knob to select a unit. You can also enable the touch screen to select the desired

unit. The default unit is V.

To Set the Vertical System

5.12 Channel Delay

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

channel. Zero offset is defined as the offset of the crossing point of the waveform and

trigger level line relative to the trigger position, as shown in

Figure 5.2

Figure 5.2 Zero Offset

Press > More > CH-CH Skew, rotate the multifunction knob or use the

numeric keypad to set the desired delay calibration time. The available range of the

delay calibration time is from -100 ns to 100 ns.

NOTE

This parameter is related to the instrument model and the current horizontal time base setting.

The larger the horizontal time base is, the larger the setting step will be.

5.13 To Set the 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.

To Set the Vertical System

Press > More > Bias, rotate the multifunction knob or use the numeric keypad

to set the desired bias voltage.

NOTE

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, refer to descriptions in "

SelfCal

5.14 Channel Label

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, " ".

Press > More > Label to enter the label setting menu. You can use the built-in

label or manually input a label. Three input methods are available for you to input a

label name, including Chinese, English, and Traditional Chinese.

The label setting menu includes the following menu items.

• Press Display to turn on or off the display of the channel label. If it is enabled,

the label will be displayed at the left side of the waveform. When on, CH1 is, by

default, displayed to be the channel label.

• Press Library to select the preset labels such as CH1, ACK, ADDR, BIT, CLK, CS,

DATA, IN, MISO, MOSI, OUT, RX and TX.

• Press Label, and the label editing interface is automatically displayed, as shown

Figure 5.3

. You can input the label manually. For details, refer to descriptions

in "

To Create a Folder

Label Input Area

Virtual Keypad

Delete KeyInput Selection Area

Upper/Lower Case Switch

Figure 5.3 Label Editing Interface

To Set the Vertical System

For example, set the label to " ". In the virtual keypad, tap "Caps" to switch

the uppercase or lowercase mode. Input "C", then tap OK to confirm the input. If

Display is enabled, the label will be displayed at the left side of the CH1

waveform.

To delete or modify the input characters, tap to move the cursor to the right side

of the character required to be deleted or modified, and then tap the delete key

to delete the character. To modify the characters, input the desired characters

again.

The "Input Selection Area" is available for you to select Chinese characters when you

choose the Chinese input mode.

• Press Info, and the channel information sub-menu is displayed. Rotate the

multifunction knob to select "Bandwidth" or "Bias", and press down the knob

to select it. Then the channel label displays the current bandwidth or bias. Both

the bandwidth and bias information can also be displayed at the same time in

the channel label, as shown in the figure below.

You can also enable the touch screen to drag the channel label to move its position

on the screen.

You can run the :CHANnel<n>:LABel:POSition command to set the position of the

specified channel label;

run the :CHANnel<n>:LABel:SIZe command to set the font size of the specified

channel label.

To Set the Vertical System

To Set the Horizontal System

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 adjustable

range of the horizontal time base is related to the model type.

While you change the horizontal time base, the displayed waveforms of all channels

are expanded or compressed (please refer to "

Horizontal Expansion

") horizontally

relative to the current selected horizontal Expand baseline. The horizontal time base

at the upper-left corner of the screen will be changed accordingly, as shown in the

figure below.

You can adjust the horizontal time base with the following three methods:

• Rotate Horizontal SCALE to adjust the horizontal time base within the

available range (clockwise to reduce the horizontal time base and

counterclockwise to increase).

• Enable the touch screen function and adjust the horizontal time base with the

pinch & stretch gesture on the touch screen. For details, refer to the "

Pinch &

Stretch

" section.

• Enable the touch screen function, and tap the Horizontal Scale label at

the top of the screen. The following window is displayed. Tap the icon at the

right side of the Scale input field to decrease or increase the horizontal time

base.You can also tap the Scale input field to input a specific value with the

displayed numeric keypad.

Decrease the timebase Increase the timebase

To Set the Horizontal System

In the Horizontal control area (Horizontal) on the front panel, press the Horizontal

SCALE knob to switch the adjustment mode between "Coarse" and "Fine" (by default,

it is Coarse). You can also press > More > Fine to enable or disable the fine

adjustment of the horizontal time base.

• Coarse adjustment: Rotate the Horizontal SCALE knob will adjust the

horizontal time base of the waveforms of all channels at 1-2-5 step within the

adjustable range. Rotate it clockwise to reduce the horizontal time base, and

counterclockwise to increase the horizontal time base.

• Fine adjustment: Rotate the Horizontal SCALE knob will adjust the horizontal

time base of the waveforms of all channels with a minor step value within the

adjustable range. Rotate it clockwise to reduce the horizontal time base, and

counterclockwise to increase the horizontal time base.

NOTE

When the delayed sweep is enabled, rotate the Horizontal SCALE knob to adjust the time

base for the delayed sweep. The delayed sweep time base displayed in the center of the screen

will be changed accordingly, as shown in the following figure.

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 screen center.

When the waveform trigger point is at the left (right) side of the screen center, the

horizontal position is a positive (negative) value.

While you change the horizontal position, the waveform trigger points and the

displayed waveforms of all channels are moved left and right. The horizontal position

at the right-upper corner of the screen changes accordingly, as shown in the figure

below.

You can adjust the horizontal Position with the following three methods:

• Rotate Horizontal POSITION to adjust the horizontal position of the

waveforms of all channels. When you rotate the knob clockwise, the waveform

To Set the Horizontal System

trigger point moves right on the screen; when rotate it counterclockwise, the

waveform trigger point moves left. Press down this knob to quickly reset the

horizontal position (the horizontal position is reset to zero).

• Enable the touch screen function, and then adjust the Horizontal Position with

the drag gesture. For details, refer to the "

Drag

" section.

• Enable the touch screen function, and tap the Horizontal position label

at the top of the screen. The following window is displayed. Tap the

icon at the right side of the Pos input field to decrease or increase the horizontal

position.You can also tap the Pos input field to input a specific value with the

displayed numeric keypad.

Decrease the position

Increase the position

NOTE

When the delayed sweep is enabled, rotate the Horizontal POSITION to adjust the

horizontal position of the delayed sweep (press down the knob to quickly reset it). The

horizontal position of the delayed sweep at the upper-right corner of the screen changes

accordingly.

6.3 Delayed Sweep

Delayed sweep can be used to enlarge a length of waveform horizontally to view

waveform details.

In the horizontal control area on the front panel, press to enable or disable the

delayed sweep. By default, it is disabled. You can also press > More > Zoom to

enable or disable the delayed sweep function.

To Set the Horizontal System

NOTE

To enable the delayed sweep, you must ensure that the current time base mode is "YT".

In delayed sweep mode, the screen is divided into two display areas as shown in

Figure 6.1

Main Time Base

Horizontal Position of

the Delayed Sweep

Waveform Before

Enlargement

Waveform After Enlargement

Figure 6.1 Delayed Sweep Mode

Waveform before enlargement:

The waveform in the area that is not covered by subtransparent blue in the upper part

of the screen is the waveform before enlargement. Its horizontal time base (also

called main time base) is displayed at the upper-left corner of the screen. You can

rotate the Horizontal

POSITION knob to move the area left and right or rotate the

Horizontal SCALE knob to enlarge or reduce this area.

NOTE

If you need to modify the horizontal time base (also called main time base) of the normal

sweep, please disable the delayed sweep function first. Rotate the Horizontal SCALE knob

to set the required main time base, and then enable the delayed sweep function.

Waveform after enlargement:

The waveform in the lower part of the screen is the horizontally expanded delayed

sweep waveform. Its horizontal time base (also called the time base of the delayed

sweep) is displayed on the screen. Compared with the main time base, the time based

of the delayed sweep has increased the waveform resolution. At this time, the

To Set the Horizontal System

Horizontal SCALE knob is to adjust the time base of the delayed sweep, and the

Horizontal POSITION knob is to adjust the horizontal position of the delayed

sweep.

NOTE

The time base of the delayed sweep should be smaller than or equal to the main time base.

To Set the Horizontal System

To Set the Sample System

7.1 Timebase Mode

This series of oscilloscope supports three available time base modes: YT mode, XY

mode, and ROLL mode. By default, the time base mode is YT.

Press > Timebase Mode on the front panel, and then rotate the multifunction

knob to select the desired mode. Then, press down the knob to select the mode.

You can also press Timebase Mode continuously or enable the touch screen to select

the desired mode.

7.1.1 YT Mode

In this mode, the Y axis represents voltage, and the X axis represents time.

NOTE

Only when this mode is enabled, can delayed sweep be turned on. In this mode, when the

horizontal time base is equal to or greater than 200ms/div, the instrument enters slow sweep

mode. For details, refer to descriptions in "

ROLL Mode

7.1.2 XY Mode

In this mode, both the X axis and the Y axis represent the voltage. The mode changes

the display from voltage-time display mode to voltage-voltage display. 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.

To Set the Sample System

Figure 7.1 Measurement Schematic Diagram of Phase Deviation

According to sinθ=A/B or C/D, θ is the phase deviation angle between the two

channels. The definitions of A, B, C, and D are shown in the above figure. The phase

deviation angle is obtained, that is:

θ=±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 function 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.

Application example: measures the phase deviation between the input signals of two

channels.

Use Lissajous method

1. Connect one sine signal to CH1, and then connect another sine signal (with the

same frequency and amplitude as the previous one but a 90° phase deviation from

the previous one) to CH2.

To Set the Sample System

2. Press AUTO, after you select "XY" mode, rotate the Horizontal SCALE knob to

adjust the sample rate properly to obtain a better view of Lissajous graph for

observation and measurement.

3. Rotate the Vertical SCALE knob that corresponds to CH1 and CH2 respectively

to make the signals easy to observe. Then, a circle, as shown in the figure below,

should be displayed.

4. Observe the measurement result shown in the figure above. According to the

measurement schematic diagram of the phase deviation (as shown in

Figure 7.1

A/B(C/D)=1. Thus, the phase deviation angle of the two channel input signals is

θ=±arcsin1=90°.

NOTE

• The maximum sample rate in XY mode is 2.5 GSa/s. In this mode, CH1 and CH2 are

forced to be enabled; CH3 and CH4 are forced to be disabled. Generally, a longer sample

waveform can ensure better display effect of Lissajous figure. But due to the limitation of

the memory depth, you have to reduce the waveform sample rate to acquire a longer

waveform (refer to the introduction in "

Memory Depth

"). Therefore, during the

measurement, reducing the sample rate properly can achieve better display effect of

Lissajous figure.

• The following functions cannot be set in XY mode:

Delayed Sweep

", "

To Select the Display Type

", "

Show Scale

", "

Protocol Decoding

", "

Pass/

Fail Test

", "

Waveform Recording and Playing

", and "

Digital Channel

To Set the Sample System

7.1.3 ROLL Mode

In this mode, the waveform scrolls from right to left to update the display. The

available range of the horizontal scale is from 200 ms to 1 ks. Press More > Auto

ROLL to select "ON". The system automatically enters the ROLL mode, and slow

sweep mode is disabled.

NOTE

• If the current delayed sweep is enabled, then when you enable the ROLL mode, the

delayed sweep is disabled automatically. When you re-enable the "YT" mode, the delayed

sweep will be re-enabled.

• The following functions cannot be set in ROLL mode:

To Adjust the Horizontal Position

” (available when the oscilloscope is in "Stop"

operating status), "

Delayed Sweep

", "

To Trigger the Oscilloscope

", "

Protocol Decoding

Pass/Fail Test

", "

Waveform Recording and Playing

", and "

To Set the Persistence Time

Slow Sweep

It is similar to the ROLL mode. In YT mode, when the horizontal time base is set to

200 ms/div or smaller, the instrument enters the "slow sweep" mode in which the

instrument first acquires the data at the left of the trigger point and then waits for a

trigger event. After the trigger occurs, the instrument continues to finish the

waveform at the right of the trigger point. When observing the low-frequency signal

in the slow sweep mode, it is recommended that you set "

Channel Coupling

" to

"DC".

7.2 Acquisition Mode

The acquisition mode is used to control how to generate waveform points from the

sample points.

This series of oscilloscope supports the following four acquisition modes: Normal,

Average, Peak, and High Res. By default, the acquisition mode is Normal.

Press > Acquisition on the front panel, and then rotate the multifunction knob

to select the desired acquisition mode. Then, press down the knob to select the

mode. You can also press Acquisition continuously or enable the touch screen to

select the mode.

7.2.1 Normal

In this mode, the oscilloscope samples the signal at a specified fixed time interval to

rebuild the waveform. For most of the waveforms, using this mode can produce the

optimal display effects.

To Set the Sample System

7.2.2 Average

In this mode, the oscilloscope averages the waveforms from multiple samples to

reduce the random noise of the input signal and improve the vertical resolution.

Greater number of averages can lower the noise and increase the vertical resolution;

while at the same time, it will slow the response of the displayed waveform to the

waveform changes.

When you select "Average" mode, press Averages, and rotate the multifunction knob

to set the desired number of averages. You can also use the pop-up numeric

keypad to input the average count. When the average count value 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. For example, if you input 9 with the numeric

keypad, the average count will be automatically input as 8.

The number of averages can be set to 2, 4, 8, 16, 32, 64, 128, 256, 512, 1024, 2048,

4096, 8192, 16384, 32768, or 65536. By default, it is 2.

Figure 7.2 Waveforms before Averaging

Figure 7.3 Waveforms after 128 Times of Averaging

To Set the Sample System

7.2.3 Peak

In this mode, the oscilloscope acquires the maximum and minimum values of the

signal within the sample interval to get the envelope of the signal or the narrow pulse

that might be lost. In this mode, signal aliasing can be prevented, but the noise

displayed would be larger.

In this mode, the oscilloscope can display all the pulses whose pulse widths are at

least the same as the sample period.

7.2.4 High Resolution

This mode uses a kind of ultra-sample technique to average the neighboring points

of the sample waveform 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 digital converter is higher than the storage rate of the acquisition memory.

NOTE

• 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 sampling rate changes, a window displaying the current

bandwidth appears temporally at the lower-left corner of the screen.

• In high-resolution mode, highest capture rate is not available.

• The available number of resolution bits is 9, 10, 11, and 12. When each bit resolution is

selected, a corresponding bandwidth is displayed temporarily.

• The high-resolution mode supports all the timebase modes: YT mode (including

recording and ZOOM), XY mode, ROLL mode, and SCAN mode.

• In high-resolution mode, the high-resolution waveforms can be exported, with 16 bits

per point.

• When high-resolution waveforms are imported, waveform plotting and analysis also

support high resolution.

7.3 Sampling Mode

This oscilloscope only supports the real-time sampling mode. In this mode, the

oscilloscope produce the waveform display from samples collected during one trigger

event. The highest real-time sample rate on the analog channel of this oscilloscope

series is 10 GSa/s. The current sample rate is displayed under CH SampleRate.

TIP

Press on the front panel to stop sampling, and then the oscilloscope will maintain its

last captured graph. You can still expand or zoom the waveforms by using the horizontal and

vertical control knobs.

To Set the Sample System

7.4 Sample Rate

Sampling is the process of converting the analog signal into the digital signal at a

specified time interval and then restoring them in sequence. The sample rate is the

reciprocal of the time interval.

The sample rate of the analog channel is related to the current channel mode. The

maximum real-time sample rate in the single-channel mode of the oscilloscope is 10

GSa/s. The maximum real-time sample rate in the dual-channel mode is 5 GSa/s, and

the maximum real-time sample rate in the 4-channel mode is 2.5 GSa/s.

TIP

Single-channel mode: only one of the four channels (CH1/CH2/CH3/CH4) is enabled.

Dual-channel mode: either CH1 or CH2 is enabled; and either CH3 or CH4 is enabled.

4-channel mode: CH1/CH2 are both enabled or CH3/CH4 are both enabled.

NOTE

The sample rate is displayed both in the status bar at the upper part of the screen and in the

CH SampleRate menu. To indirectly modify the sample rate, rotate the Horizontal SCALE

knob to adjust the horizontal time base or modify the memory depth. In addition, if the

triggering source selects the analog channel, the channel mode will be changed, and thus

affecting the sampling rate.

The impact of low sample rate on the waveform:

1. 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.

2. Waveform Aliasing: when the sample rate is twice lower than the actual signal

frequency (Nyquist Frequency), the frequency of the waveform rebuilt from the

sample data is smaller than the actual signal frequency.

To Set the Sample System

3. Waveform Leakage: when the sample rate is too low, the waveform rebuilt from

the sample data do not reflect all the actual signal information.

7.5 LA Sample Rate

LA sampling is the process of sampling on the compared digital signals at a certain

time interval. LA sample rate is the reciprocal of the time interval. For example, if the

LA sample rate is 500 MSa/s, it indicates that the oscilloscope will make data

acquisition on the digital signals at an interval of 2 ns. The maximum LA sample rate

of the oscilloscope is 1.25 GSa/s, and its display value is related to the sample rate of

the current analog channel.

NOTE

• The digital signals mentioned here refers to the signal obtained from the comparison

between the input signal and the user-defined threshold level. The rule of the

comparison is that when the amplitude of the input signal is greater than the threshold

level, it is judged to be the logic high level; when the amplitude of the input signal is

smaller than the threshold level, it is judged to be the logic low level.

• LA sample rate is displayed under the

LA SampleRate menu. To indirectly modify the LA

sample rate, rotate the Horizontal

SCALE knob to adjust the horizontal time base or

modify the memory depth.

7.6 Memory Depth

Memory depth refers to the number of points of the oscilloscope that can store in

one trigger acquisition. It reflects the storage capability of the acquisition storage.

This oscilloscope is equipped with a standard memory depth of up to 500 Mpts.

To Set the Sample System

Figure 7.4 Memory Depth

The following equation shows the relations among memory depth, sample rate, and

horizontal time base scale:

MDepth = SRate x TScale x 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, under the same horizontal time base scale, a higher memory depth can

ensure a higher sample rate.

Press > Mem Depth, then rotate the multifunction knob to select the

desired memory depth, and then press down the knob to select it. You can also press

Mem Depth continuously or enable the touch screen to select the desired memory

depth. By default, the memory depth is Auto.

• In single-channel mode, the memory depths available include Auto, 1 Kpts, 10

Kpts, 100 Kpts, 1 Mpts, 10 Mpts, 25 Mpts, 50 Mpts, 100 Mpts, 125 Mpts, 250

Mpts, and 500 Mpts.

• In dual-channel mode, the memory depths available include Auto, 1 Kpts, 10

Kpts, 100 Kpts, 1 Mpts, 10 Mpts, 25 Mpts, 50 Mpts, 100 Mpts, 125 Mpts, and 250

Mpts.

To Set the Sample System

• In 4-channel mode, the memory depths available include Auto, 1 Kpts, 10 Kpts,

100 Kpts, 1 Mpts, 10 Mpts, 25 Mpts, 50 Mpts, 100 Mpts, and 125 Mpts.

NOTE

In "Auto" mode, the oscilloscope selects the memory depth automatically according to the

current sample rate.

7.7 LA Memory Depth

Press > More to view the memory depth of the current digital channel under

LA Mem Depth. The LA memory depth will change with the memory depth of the

analog channel, and cannot be set separately. The maximum LA memory depth is

62.5 Mpts.

7.8 Anti-Aliasing

At a slower sweep speed, the sample rate is reduced, and a dedicated display

algorithm can be used to minimize the possibility of aliasing.

Press > Anti-Aliasing to enable or disable the anti-aliasing function. By default,

anti-aliasing is disabled. In this case, it is more likely to generate waveform aliasing.

NOTE

This function should be enabled when the horizontal time base has a large deviation from the

period of the signal under test (e.g. when the horizontal time base is greater than five-fold the

period of the signal under test).

7.9 Horizontal Expansion

Horizontal expansion indicates the reference position that the screen waveform is

referenced to when it is horizontally expanded or compressed in adjusting the

Horizontal SCALE knob. In YT mode, press > More > Expand, then rotate

the multifunction knob to switch to the desired memory depth, and then press

down the knob to select the option. You can also press the Expand key continuously

or use the touch screen to select the desired reference. The horizontal expansion

reference supported by the oscilloscope includes Center, Left, Right, Trigger, and User.

The default is "Center".

• Center: when the horizontal time base is modified, the waveform will be

expanded or compressed horizontally relative to the screen center.

To Set the Sample System

• Left: when the horizontal time base is modified, the waveform will be expanded

or compressed horizontally relative to the leftmost position of the screen.

• Right: when the horizontal time base is modified, the waveform will be expanded

or compressed horizontally relative to the rightmost position of the screen.

• 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.

After you select "User", press Expand User and then rotate the multifunction

knob to set the expansion reference. Its available range is from rightmost

position of the screen to leftmost position of the screen. By default, it is the

screen center. Pressing down the multifunction knob can quickly reset the

user-defined reference position to 0.

NOTE

This function is unavailable in XY mode, ROLL mode, and YT mode with the delayed sweep

being enabled.

To Set the Sample System

To Trigger the Oscilloscope

As for trigger, you set certain trigger condition according to the requirement and

when a waveform in the waveform stream meets this condition, the oscilloscope

captures this waveform as well as the neighboring part, and displays them on the

screen. For the digital oscilloscope, it samples waveform continuously no matter

whether it is stably triggered, but only stable trigger can be stably displayed. 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 is overlapped so as to display the stable

waveforms.

Trigger settings should be based on the features of the input signal. To quickly

capture the desired waveform, you need to understand the signal under test. This

oscilloscope provides abundant trigger types that help you focus on the desired

waveform details.

8.1 Trigger Source

In the trigger control area on the front panel, press > Source, then rotate the

multifunction knob to select a desired source, then press down the knob to select

it. You can also press Source continuously or enable the touch screen to select it.

The analog channels (CH1-CH4), digital channels (D0-D15), EXT, or AC Line can all 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.

Digital channel input:

Signals input from digital channels D0-D15 can all be used as trigger sources. No

matter whether the channel selected is enabled, the channel can work normally.

External trigger input:

The external trigger source can 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).

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,

To Trigger the Oscilloscope

stably triggering the waveform output from the transformer of a transformer

substation. It is mainly used in related measurements of the power industry.

8.2 Trigger LEVEL/Threshold Level

The adjustment of the trigger level/threshold level is related to the type of the trigger

source.

• When the trigger source is selected from CH1 to CH4, rotate the Trigger

LEVEL knob to adjust the trigger level. 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 label "

" 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 of is

displayed at the upper-right corner of the screen.

NOTE

In Runt Trigger, Slope Trigger, and Window trigger, you need to set the upper and lower

limits of the trigger level. Rotate the Trigger LEVEL knob to adjust the trigger level.

The difference between the current upper limit and lower limit of the trigger level is

displayed at the upper-right side of the screen. Two trigger level labels

and are

displayed at the left side of the screen. During the adjustment of trigger level, two trigger

level lines appear on the screen, and they move up and down with the change of the

trigger level. At the same time, the real-time trigger level information is displayed at the

lower-left corner of the screen (As shown in the figure below, H indicates the upper limit

of the trigger level, L indicates the lower limit of the trigger level, and △ indicates the

trigger level deviation).

• When the trigger source is EXT, rotate the Trigger LEVEL knob to adjust the

trigger level. The current trigger level of is displayed at the upper-right corner of

the screen.

NOTE

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.

• When the trigger source is AC Line, there is no trigger level.

• When the trigger source is D0-D15, rotate the Trigger LEVEL knob to adjust

the threshold level. The current threshold level value is displayed at the upper-

To Trigger the Oscilloscope

right corner of the screen. In addition, you can also press to enter the LA

logic analysis setting menu. Then set the threshold level of the digital channel in

the sub-menu threshold setting. For the setting method, refer to "

To Set the

Threshold

You can also enable the touch screen to adjust the trigger level/threshold level.

Two methods are available for you:

Method 1: Enable the touch screen and drag the trigger level line to adjust the

trigger level. For details about the operations, refer to descriptions in "

Drag

Method 2: Enable the touch screen, and tap the trigger setting label

at the upper-right corner of the screen. The following window is

displayed. Tap the

icon at the right side of the input field of the trigger

level to decrease or increase the trigger level. You can also tap the input field of

the trigger level to input a specific value with the displayed numeric keypad.

Level Input Field Decrease the level Increase the level

8.3 Trigger Mode

The following is the schematic diagram of the acquisition memory. To easily

understand the trigger event, we classify the acquisition memory into the pre-trigger

buffer 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 system runs, the oscilloscope operates by first filling the pre-trigger buffer.

It starts searching for a trigger after the pre-trigger buffer is filled. 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 data acquired just before the trigger. Then, the

To Trigger the Oscilloscope

oscilloscope will fill the post-trigger buffer and display the data in the acquisition

memory. If the acquisition is activated via , the oscilloscope will repeat this

process; if the acquisition is activated via , the oscilloscope will stop after

finishing a single acquisition (you can pan and zoom the currently displayed

waveform).

This oscilloscope provides Auto, Normal, and Single trigger modes. The default is

Auto.

In the trigger control area on the front panel, press to quickly switch the

current trigger mode. The trigger mode is displayed at the upper-right corner of the

screen: A (Auto), N (Normal), and S (Single).

• Auto: In this trigger mode, if the specified trigger conditions are not found, the

oscilloscope will initiate a trigger and capture waveforms forcibly. This trigger

mode should be used when the signal level is unknown or the DC should be

displayed as well as when forcible trigger is not necessary as the trigger

condition always occurs.

• Normal: In this trigger mode, triggers and acquisitions only occur when the

specified trigger conditions are found. This trigger mode should be used when

the signal is with low repetition rate or only the event specified by the trigger

setting needs to be sampled as well as when auto trigger should be prevented to

acquire stable display.

• Single: In this trigger mode, the oscilloscope performs a single trigger and

acquisition when the specified trigger conditions are found, and then stops. This

trigger mode should be used when you need to perform a single acquisition of

the specified event and analyze the acquisition result (you can pan and zoom the

currently displayed waveform, and the subsequent waveform data will not

overwrite the current waveform). After a single trigger mode is initiated, the

operating status of the oscilloscope turns out to be in "STOP" state.

NOTE

In Normal and Single trigger modes, pressing can generate a trigger signal forcibly.

To Trigger the Oscilloscope

You can also enable the touch screen to set the trigger mode. Tap the trigger setting

label at the upper-right corner of the screen. Then the following

window is displayed. Tap to select "Auto", "Normal", or "Single" as the trigger mode.

Level Input Field Decrease the level Increase the level

8.4 Trigger Coupling

Trigger coupling decides which kind of components will be transmitted to the trigger

module. Please distinguish trigger coupling from "

Channel Coupling

NOTE

Trigger coupling is only valid when the trigger type is Edge and the trigger source is an analog

channel.

Press

> Coupling in the trigger control area on the front panel, and then rotate

the multifunction knob to select the desired coupling mode (by default, it is DC).

You can also press Coupling key continuously or use the touch screen to select the

desired coupling mode.

• DC: allows DC and AC components to pass the trigger path.

• AC: blocks the DC components and attenuates 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 under Coupling, 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 at the upper-right corner of the screen.

8.5 Trigger Holdoff

Trigger holdoff can be used to stably trigger on complex repetitive waveforms that

have multiple edges (or other events) between waveform repetitions (such as pulse

series). Holdoff time indicates the time that the oscilloscope waits for re-arming the

trigger module after generating a correct trigger. The oscilloscope will not trigger

To Trigger the Oscilloscope

even if the trigger condition is met during the holdoff time and will only re-arm the

trigger module after the holdoff time expires.

For example, to stably trigger the repetitive pulse series as shown in the figure below,

the holdoff time should be set to a value that is greater than t1 and smaller than t2.

Holdoff Time

Trigger Position

Figure 8.2 Schematic Diagram of Trigger Holdoff

In the trigger control area (Trigger), press

> Holdoff (for some trigger, Holdoff

is a sub menu under

More, at this time, press > More > Holdoff), and then

rotate the multifunction knob at a small step to modify the holdoff time (the

holdoff to this time when the waveforms are stably triggered; by default, the holdoff

time is 8 ns) or use the numeric keypad to set the holdoff time. The adjustable range

of the holdoff time is from 8 ns to 10 s.

8.6 Noise Rejection

Noise rejection can reject the high frequency noise in the signal and reduce the

possibility of miss-trigger of the oscilloscope.

In the trigger control area (Trigger) on the front panel, press to enter the

trigger setting menu, then press Noise Reject continuously (for some trigger, Noise

Reject is a sub-menu under More, at this time, press > More > Noise Reject)

to enable or disable the noise rejection.

NOTE

This function is only valid when the trigger source is an analog channel.

8.7 Trigger Type

To Trigger the Oscilloscope

8.7.1 Edge Trigger

Triggers on the trigger leve/threshold level of the specified edge of the input signal.

Trigger Type:

In the trigger control area (Trigger) on the front panel, press > Type, and rotate

the multifunction knob to select "Edge", then press down the knob to select it. You

can also press Type continuously or enable the touch screen to select it. At this time,

the current trigger setting information (including trigger type, trigger source, and

trigger level/threshold level) is displayed at the upper-right corner of the screen, as

shown in the figure below. The information will change based on the trigger settings.

Source Selection:

Press Source to open the signal source list and select CH1-CH4, AC Line, EXT, or D0-

D15. For details, refer to descriptions in "

Trigger Source

". The current trigger source is

displayed at the upper-right corner of the screen.

NOTE

Only when we select the channel (that has been input with signals) as the trigger source, can

we obtain a stable trigger.

Edge Type:

Press

Slope, then rotate the multifunction knob to select the input signal edge on

which the oscilloscope triggers. Then the current edge type is displayed at the upper-

right corner of the screen. You can also press Slope continuously or enable the touch

screen to select it.

• 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.

Trigger Mode:

In the trigger control area (Trigger) on the front panel, press to quickly switch

the current trigger mode. For details, refer to descriptions in "

Trigger Mode

To Trigger the Oscilloscope

Trigger Parameter Setting:

Sets the trigger parameters (trigger coupling, trigger holdoff and noise rejection)

under this trigger type. For details, refer to descriptions in "

Trigger Coupling

", "

Trigger

Holdoff

" and "

Noise Rejection

Trigger LEVEL/Threshold Level:

Rotate the Trigger LEVEL knob to adjust the trigger level or threshold level. Please

refer to descriptions in "

Trigger LEVEL/Threshold Level

". The current trigger level/

threshold level is displayed at the upper-right corner of the screen.

8.7.2 Pulse Trigger

Triggers on the positive or negative pulse with 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

-Width

Trigger Level

Figure 8.3 Positive Pulse Width/Negative Pulse Width

Trigger Type:

Press

Type, and then rotate the multifunction knob to select "Pulse". Press down

the knob to select the trigger type. Then, the current trigger setting information is

displayed at the upper-right corner of the screen, as shown in the figure below. You

can also press Type continuously or enable the touch screen to select it.

Source Selection:

To Trigger the Oscilloscope

Press Source to open the signal source list and select CH1-CH4 or D0-D15. For

details, refer to descriptions in "

Trigger Source

". The current trigger source is

displayed at the upper-right corner of the screen.

NOTE

Only when we select the channel (that has been input with signals) as the trigger source, can

we obtain a stable trigger.

Polarity:

Press Polarity continuously to select the desired polarity. The polarities available are

positive polarity ( ) or negative polarity ( ).

Trigger Condition:

Press When, then rotate the multifunction knob to select the trigger condition,

and then press down the knob to select it. You can also press When continuously or

enable the touch screen to select it.

• When you select "Positive" for polarity and ">" 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 and "<" 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 and "<>" 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 and ">" 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 and "<" 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 and "<>" for trigger condition, the

oscilloscope triggers when the negative pulse width of the input signal is greater

To Trigger the Oscilloscope

than the specified lower limit of pulse width and smaller than the specified

upper limit of pulse width.

Pulse Width Setting:

• When">" or "<" is set to trigger conditions, press Lower or Upper , and then

rotate the multifunction knob to set the lower limit value or the upper limit

value. You can also use the pop-up numeric keypad to set it. The pulse range

available is from 800 ps to 10 s.

•

When the trigger condition is set to "<>", press

Upper and Lower, and then

rotate the multifunction knob to set the upper limit value and the lower limit

value. You can also use the pop-up numeric keypad to set them.

NOTE

The lower limit of the pulse width must be smaller than the upper limit.

Trigger Mode:

In the trigger control area (Trigger) on the front panel, press to quickly switch

the current trigger mode. For details, refer to descriptions in "

Trigger Mode

Trigger Parameter Setting:

Sets the trigger parameters (trigger holdoff and noise rejection) under this trigger

type. For details, refer to descriptions in "

Trigger Holdoff

" and "

Noise Rejection

Trigger LEVEL/Threshold Level:

Rotate the Trigger LEVEL knob to adjust the trigger level or threshold level. Please

refer to descriptions in "

Trigger LEVEL/Threshold Level

". The current trigger level/

threshold level is displayed at the upper-right corner of the screen.

8.7.3 Slope Trigger

In Slope trigger, the oscilloscope triggers 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. As shown in the figure below:

To Trigger the Oscilloscope

Upper Limit of Trigger Level

(Up Level)

Lower Limit of Trigger Level

(Low Level)

Positive Slope Time

Negative Slope Time

Figure 8.4 Positive Slope Time/Negative Slope Time

Trigger Type:

Press Type, and then rotate the multifunction knob to select "Slope". Press down

the knob to select the trigger type. Then, the current trigger setting information is

displayed at the upper-right corner of the screen, as shown in the figure below. You

can also press Type continuously or enable the touch screen to select it.

Source Selection:

Press Source to switch the trigger source and select CH1-CH4. For details, refer to

descriptions in "

Trigger Source

". The current trigger source is displayed at the upper-

right corner of the screen.

NOTE

Only when we select the channel (that has been input with signals) as the trigger source, can

we obtain a stable trigger Wave.

Edge Type:

Press

Slope to select the input signal edge 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:

Press When, then rotate the multifunction knob to select the trigger condition,

and then press down the knob to select the trigger condition. You can also press

When continuously or enable the touch screen to select it.

• When you select "Rising" for the edge type and ">" for trigger condition, the

oscilloscope triggers when the positive slope time of the input signal is greater

than the specified time.

To Trigger the Oscilloscope

• When you select "Rising" for the edge type and "<" 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 and "<>" 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 and ">" 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 and "<" 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 and "<>" 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:

• When the Trigger Condition is set to ">" or "<", press Lower or Upper, and

then rotate the multifunction knob to set the lower limit value or the upper

limit value. You can also use the numeric keypad to set it. The available range of

the slope time is from 800 ps to 10 s.

•

When the

Trigger Condition is set to "<>", press Upper and Lower, and then

rotate the multifunction knob to set the upper limit value and the lower limit

value. You can also use the numeric keypad to set them.

NOTE

The lower slope time limit must be smaller than the upper slope time limit.

Level Selection and Adjustment of Trigger Level:

To Trigger the Oscilloscope

After the trigger condition setting is completed, you need to adjust the trigger level

to correctly trigger the signal and obtain a stable waveform. Press Level Select (when

"<>" is selected as the trigger condition, Level Select is a sub-menu under More),

then rotate the multifunction knob to select the desired level type for adjustment,

and then press down the knob to select the type. You can also press Level Select

continuously or enable the touch screen to select it.

• Level A: only adjusts the upper limit of the trigger level, and the lower limit of

the trigger level remains unchanged.

• Level B: only adjusts the lower limit of the trigger level, and the upper limit of the

trigger level remains unchanged.

• Level AB: adjusts the upper and lower limits of the trigger level at the same time,

and the trigger level deviation (the difference between the upper limit and lower

limit of the trigger level) remains unchanged.

NOTE

In Slope trigger, pressing Trigger LEVEL can quickly switch the current level adjustment

type.

Rotate the Trigger

LEVEL knob to adjust the corresponding trigger level. During

the adjustment of trigger level, two trigger level lines appear on the screen, and they

move up and down with the change of the trigger level. At the same time, the real-

time trigger level information is displayed at the lower-left corner of the screen (As

shown in the figure below, H indicates the upper limit of the trigger level, L indicates

the lower limit of the trigger level, and △ indicates the trigger level deviation). When

you stopping modifying the trigger level, the trigger level line and the trigger level

information at the lower-left corner of the screen disappear in about 2 s. The current

trigger level deviation is displayed at the upper-right corner of the screen.

Trigger Mode:

In the trigger control area (Trigger) on the front panel, press to quickly switch

the current trigger mode. For details, refer to descriptions in "

Trigger Mode

Trigger Parameter Setting:

Sets the trigger parameters (trigger holdoff and noise rejection) under this trigger

type. For details, refer to descriptions in "

Trigger Holdoff

" and "

Noise Rejection

To Trigger the Oscilloscope

8.7.4 Video Trigger

The video signal can include image information and timing information, which adopts

different standards and formats. This series oscilloscope 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:

Press Type, and then rotate the multifunction knob to select "Video". Press down

the knob to select the type. Then, the current trigger setting information is displayed

at the upper-right corner of the screen, as shown in the figure below. You can also

press Type continuously or enable the touch screen to select it.

Source Selection:

Press Source to switch the trigger source and select CH1-CH4. For details, refer to

descriptions in "

Trigger Source

". The current trigger source is displayed at the upper-

right corner of the screen.

NOTE

Only when we select the channel (that has been input with signals) as the trigger source, can

we obtain a stable trigger Wave.

Video Polarity:

Press

Polarity continuously to select the desired video polarity. The polarities

available are positive polarity ( ) and negative polarity ( ).

Video Standard:

Press Standard, and rotate the multifunction knob to select the desired video

standard. You can also press Standard continuously or enable the touch screen to

select it.

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

To Trigger the Oscilloscope

Video Standard

Frame

Frequency

(Frame)

Scan Type TV Scan Line

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:

Press Sync, then rotate the multifunction knob to select the sync type, and then

press down the knob to select it. You can also press Sync continuously or enable the

touch screen to select it.

• 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. Press Line, then

rotate the multifunction knob or use the pop-up numeric keypad to modify

the line number. 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

available when the video standard is NTSC, PAL/SECAM, or 1080i.

To Trigger the Oscilloscope

• Even: triggers on the rising edge of the first ramp pulse in the even field. It is

available when the video standard is NTSC, PAL/SECAM, or 1080i.

Noise Rejection:

Sets the trigger parameter (noise rejection) under this trigger type. For details, refer

to descriptions in "

Noise Rejection

Trigger Mode:

In the trigger control area (Trigger) on the front panel, press to quickly switch

the current trigger mode. For details, refer to descriptions in "

Trigger Mode

Trigger Level:

Rotate the Trigger LEVEL knob to modify the level. For details, refer to

descriptions in "

Trigger LEVEL/Threshold Level

TIP

• For a better observation of 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 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

Identifies a trigger condition by searching 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.

To Trigger the Oscilloscope

. . .

(CH1~CH4 or D0~D15)

Figure 8.5 Pattern Trigger

Trigger Type:

Press

Type, and then rotate the multifunction knob to select "Pattern". Press down

the knob to select the trigger type. Then, the current trigger setting information is

displayed at the upper-right corner of the screen, as shown in the figure below. You

can also press Type continuously or enable the touch screen to select it.

Source Selection:

Press Source to open the signal source list and select CH1-CH4 or D0-D15. For

details, refer to descriptions in "

Trigger Source

". The current trigger source is

displayed at the upper-right corner of the screen.

NOTE

Only when we select the channel (that has been input with signals) as the trigger source, can

we obtain a stable trigger Wave.

Pattern Setting:

Press

Code, then rotate the multifunction knob to select the pattern of the

currently selected channel, and then press down the knob to select it. You can also

press Code continuously or enable the touch screen to select it. The following five

patterns are available:

• H: sets the pattern of the channel selected to "1", i.g. the voltage level is higher

than the trigger level/threshold level of the channel.

• L: sets the pattern of the channel selected to "0", i.g. the voltage level is lower

than the trigger level/threshold level of the channel.

To Trigger the Oscilloscope

• X: sets the pattern of the channel selected to "X", i.g. 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.

•

Rising: sets the pattern to the rising edge (" ") of the channel selected.

•

Falling: sets the pattern to the falling edge (" ") of the channel selected.

At this time, the corresponding pattern is displayed at the bottom of the screen. The

patterns of channels CH1-CH4 and D0-D15 are presented from left to right, as shown

in the figure below.

You can also set the pattern with the virtual keypad. The setting methods are as

follows:

Enable the touch screen to tap the channel pattern. Then, a virtual keypad is

displayed. Set the channel pattern with the keypad. For example, tap CH2 pattern,

then the the channel pattern is displayed, as shown in

Figure 8.6

. Tap the left arrow

key to move the cursor to the left or tap the right arrow key to move the

cursor to the right. Then select a pattern. After the pattern of the current channel is

set completely, the cursor goes to the next pattern bit automatically. Set them

respectively. After all the pattern bits are set completely, tap OK to confirm the

setting, and close the virtual keypad. You can also tap ALL to apply the current pattern

to all the channels. This key functions the same as the All Bits menu key.

Confirmation Key

All Bits

Move the cursor

to the left

Move the cursor

to the right

Pattern

Figure 8.6 Virtual Keypad for Pattern Setting

NOTE

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,

To Trigger the Oscilloscope

then a prompt message "Invalid input" is displayed. Then, the latter defined edge item will be

replaced by X.

All Bits:

Press

All Bits to set the patterns of all trigger sources to the pattern settings selected

currently.

Trigger Condition:

Press When, then rotate the multifunction knob to select the trigger condition,

and then press down the knob to select it. You can also press When continuously or

enable the touch screen to select it.

• And: triggers when the pattern meets the logical AND condition.

• Or: triggers when the pattern meets the logical OR condition.

Trigger Mode:

In the trigger control area (Trigger) on the front panel, press to quickly switch

the current trigger mode. For details, refer to descriptions in "

Trigger Mode

Trigger Parameter Setting:

Sets the trigger parameters (trigger holdoff and noise rejection) under this trigger

type. For details, refer to descriptions in "

Trigger Holdoff

" and "

Noise Rejection

Trigger LEVEL/Threshold Level:

Rotate the Trigger LEVEL knob to adjust the trigger level/ threshold level. Please

refer to descriptions in "

Trigger LEVEL/Threshold Level

". The current trigger level/

threshold level is displayed at the upper-right corner of the screen.

8.7.6 Duration Trigger

In duration trigger, the instrument 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 H (high), L (low), or X (don't care). The

instrument triggers when the duration (△T) of this pattern meets the preset time, as

shown in the figure below.

To Trigger the Oscilloscope

CH1

CH2

CH3

CH4

∆T ∆T

Pattern:HLHL

Figure 8.7 Duration Trigger

Trigger Type:

Press Type, and then rotate the multifunction knob to select "Duration". Press

down the knob to select the trigger type. Then, the current trigger setting information

is displayed at the upper-right corner of the screen, as shown in the figure below. You

can also press Type continuously or enable the touch screen to select it.

Source Selection:

Press Source to open the signal source list and select CH1-CH4 or D0-D15. For

details, refer to descriptions in "

Trigger Source

". The current trigger source is

displayed at the upper-right corner of the screen.

NOTE

Only when we select the channel (that has been input with signals) as the trigger source, can

we obtain a stable trigger Wave.

Pattern Setting:

Press Code, then rotate the multifunction knob to select the pattern of the current

signal source. Press down the knob to select it. At this time, the corresponding

pattern is displayed at the bottom of the screen. The patterns of channels CH1-CH4

and D0-D15 are presented from left to right, as shown in the figure below. You can

also press

Code continuously or enable the touch screen to select it.

To Trigger the Oscilloscope

• H: sets the pattern of the channel selected to "H", i.g. the voltage level is higher

than the trigger level/threshold level of the channel.

• L: sets the pattern of the channel selected to "L", i.g. the voltage level is lower

than the trigger level/threshold level of the channel.

• X: sets the pattern of the channel selected to "X", i.g. this channel is not used as

a part of the pattern. When all channels in the pattern are set to "Don’t Care",

the oscilloscope will not trigger.

Trigger Condition:

Press When, then rotate the multifunction knob to select the the desired trigger

condition, and then press down the knob to select it. You can also press When

continuously or enable the touch screen to select it.

• >: triggers when the duration of the pattern is greater than the preset time.

Press Lower to set the lower limit of the duration of the pattern. Its range is from

800 ps to 10 s.

• <: triggers when the duration of the pattern is smaller than the preset time.

Press Upper to set the upper limit of the duration of the pattern. Its range is

from 800 ps 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. Press Upper

to set the upper limit of the duration of the pattern. Its range is from 801 ps to

10 s. Press Lower to set the lower limit of the duration of the pattern. Its range is

from 800 ps to 9.9 s.

•

> <: 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. Press

Upper to

set the upper limit of the duration of the pattern. Its range is from 800 ps to 10 s.

Press Lower to set the lower limit of the duration of the pattern. Its range is from

800 ps to 9.9 s.

NOTE

To Trigger the Oscilloscope

The lower time limit must be smaller than the upper time limit.

All Bits:

Press

All Bits to set the patterns of all the trigger sources to the pattern settings

selected currently.

Trigger Mode:

In the trigger control area (Trigger) on the front panel, press to quickly switch

the current trigger mode. For details, refer to descriptions in "

Trigger Mode

Trigger Parameter Setting:

Sets the trigger parameters (trigger holdoff and noise rejection) under this trigger

type. For details, refer to descriptions in "

Trigger Holdoff

" and "

Noise Rejection

Trigger LEVEL/Threshold Level:

Rotate the Trigger LEVEL knob to adjust the trigger level/ threshold level. Please

refer to descriptions in "

Trigger LEVEL/Threshold Level

". The current trigger level/

threshold level is displayed at the upper-right corner of the screen.

8.7.7 Timeout Trigger

In Timeout trigger, the instrument triggers when the time interval (ΔT) (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 the

figure below.

Time Out

Figure 8.8 Timeout Trigger

Trigger Type:

Press Type, and then rotate the multifunction knob to select "Timeout". Press

down the knob to select the type. Then, the current trigger setting information is

displayed at the upper-right corner of the screen, as shown in the figure below. You

can also press

Type continuously or enable the touch screen to select it.

To Trigger the Oscilloscope

Source Selection:

Press Source to open the signal source list and select CH1-CH4 or D0-D15. For

details, refer to descriptions in "

Trigger Source

". The current trigger source is

displayed at the upper-right corner of the screen.

NOTE

Only when we select the channel (that has been input with signals) as the trigger source, can

we obtain a stable trigger Wave.

Edge Type:

Press

Slope, then rotate the multifunction knob to select input signal edge on

which the oscilloscope triggers. You can also press Slope continuously or enable the

touch screen to select it.

• 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.

• 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. Press Timeout, and then rotate the

multifunction knob or use the pop-up numeric keypad to set the timeout value.

The available range is from 16 ns to 10 s.

Trigger Mode:

In the trigger control area (Trigger) on the front panel, press to quickly switch

the current trigger mode. For details, refer to descriptions in "

Trigger Mode

Trigger Parameter Setting:

Sets the trigger parameter (noise rejection) under this trigger type. For details, refer

to descriptions in "

Noise Rejection

Trigger LEVEL/Threshold Level:

To Trigger the Oscilloscope

Rotate the Trigger LEVEL knob to adjust the trigger level or threshold level. Please

refer to descriptions in "

Trigger LEVEL/Threshold Level

". The current trigger level/

threshold level is displayed at the upper-right corner of the screen.

8.7.8 Runt Trigger

This trigger mode is used to trigger pulses that pass through one trigger level but fail

to pass through another trigger level, 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 8.9 Runt Trigger

Trigger Type:

Press Type, and then rotate the multifunction knob to select "Runt". Press down

the knob to select it. Then, the current trigger setting information is displayed at the

upper-right corner of the screen, as shown in the figure below. You can also press

Type continuously or enable the touch screen to select it.

Source Selection:

Press Source to switch the trigger source and select CH1-CH4. For details, refer to

descriptions in "

Trigger Source

". The current trigger source is displayed at the upper-

right corner of the screen.

NOTE

Only when we select the channel (that has been input with signals) as the trigger source, can

we obtain a stable trigger Wave.

Polarity:

Press

Polarity to select the polarity of the Runt trigger.

• Positive: triggers on the positive runt pulse.

•

Negative: triggers on the negative runt pulse.

To Trigger the Oscilloscope

Trigger Condition:

Press When, then rotate the multifunction knob to select the the desired trigger

condition, and then press down the knob to select it. You can also press When

continuously or enable the touch screen to select it.

• None: indicates not setting the trigger condition of Runt trigger.

• >: triggers when the runt pulse width is greater than the lower limit of pulse

width. Press Lower to set the minimum pulse width of Runt trigger.

• <: triggers when the runt pulse width is smaller than the upper limit of pulse

width. Press Upper to set the maximum pulse width of Runt trigger.

•

<>: triggers when the runt pulse width is greater than the lower limit and

smaller than the upper limit of pulse width. Press

Upper to set the maximum

pulse width of Runt trigger. Press Lower to set the minimum pulse width of Runt

trigger.

NOTE

The lower limit of the pulse width must be smaller than the upper limit.

Level Selection and Adjustment of Trigger Level:

After the trigger condition setting is completed, you need to adjust the trigger level

to correctly trigger the signal and obtain a stable waveform. Press Level Select (when

"<>" is selected as the trigger condition, Level Select is a sub-menu under More),

then rotate the multifunction knob to select the desired level type for adjustment,

and then press down the knob to select it. You can also press Level Select

continuously or enable the touch screen to select it.

Level A: only adjusts the upper limit of the trigger level, and the lower limit of the

trigger level remains unchanged.

Level B: only adjusts the lower limit of the trigger level, and the upper limit of the

trigger level remains unchanged.

Level AB: adjusts the upper and lower limits of the trigger level at the same time, and

the trigger level deviation (the difference between the upper limit and lower limit of

the trigger level) remains unchanged.

NOTE

In Runt trigger, pressing the Trigger LEVEL knob can quickly switch the current level

adjustment type.

To Trigger the Oscilloscope

100

Rotate the Trigger LEVEL knob to adjust the corresponding trigger level. During