SDS2000X HD Series
Digital Oscilloscope
User Manual
EN01A
SDS2000X HD Series Digital Oscilloscope User Manual
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Contents
1 INTRODUCTION ............................................................................................................... 9
2 IMPORTANT SAFETY INFORMATION ........................................................................... 10
GENERAL SAFETY SUMMARY ........................................................................................... 10
SAFETY TERMS AND SYMBOLS ......................................................................................... 13
WORKING ENVIRONMENT ................................................................................................. 14
COOLING REQUIREMENTS................................................................................................15
POWER AND GROUNDING REQUIREMENTS ........................................................................ 16
CLEANING ....................................................................................................................... 17
ABNORMAL CONDITIONS .................................................................................................. 17
SAFETY COMPLIANCE ...................................................................................................... 17
INFORMATIONS ESSENTIELLES SUR LA SÉCURITÉ ....................................................... 19
EXIGENCE DE SÉCURITÉ .............................................................................................................. 19
TERMES ET SYMBOLES DE SÉCURITÉ ........................................................................................... 22
ENVIRONNEMENT DE TRAVAIL ...................................................................................................... 23
EXIGENCES DE REFROIDISSEMENT ............................................................................................... 25
CONNEXIONS D'ALIMENTATION ET DE TERRE ................................................................................ 25
NETTOYAGE ................................................................................................................................ 26
CONDITIONS ANORMALES ............................................................................................................ 27
CONFORMITÉ EN MATIÈRE DE SÉCURITÉ ....................................................................................... 27
3 FIRST STEPS ................................................................................................................. 28
DELIVERY CHECKLIST ...................................................................................................... 28
QUALITY ASSURANCE ...................................................................................................... 28
MAINTENANCE AGREEMENT ............................................................................................. 28
4 DOCUMENT CONVENTIONS ......................................................................................... 29
5 GETTING STARTED ....................................................................................................... 30
MECHANICAL DIMENSIONS............................................................................................... 30
ADJUST THE SUPPORTING LEGS ...................................................................................... 31
POWER ON ...................................................................................................................... 31
SHUT DOWN ..................................................................................................................... 32
SYSTEM INFORMATION ..................................................................................................... 32
INSTALL OPTIONS ............................................................................................................ 32
6 QUICK START ................................................................................................................ 33
FRONT PANEL OVERVIEW ................................................................................................ 33
REAR PANEL OVERVIEW .................................................................................................. 34
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CONNECTING TO EXTERNAL DEVICES/SYSTEMS ............................................................... 35
6.3.1 Power Supply ......................................................................................................... 35
6.3.2 LAN ......................................................................................................................... 35
6.3.3 USB Peripherals ..................................................................................................... 35
6.3.4 Auxiliary Output ...................................................................................................... 35
6.3.5 Waveform Generator .............................................................................................. 36
6.3.6 Probes .................................................................................................................... 36
6.3.7 Logic Probe ............................................................................................................ 37
7 TOUCH SCREEN DISPLAY ............................................................................................ 38
OVERVIEW ....................................................................................................................... 38
MENU BAR ...................................................................................................................... 39
GRID AREA ...................................................................................................................... 40
CHANNEL DESCRIPTOR BOX ............................................................................................ 41
TIMEBASE AND TRIGGER DESCRIPTOR BOXES ................................................................. 43
DIALOG BOX.................................................................................................................... 45
TOUCH GESTURES ........................................................................................................... 47
MOUSE AND KEYBOARD OPERATION ................................................................................ 48
CHOOSING THE LANGUAGE .............................................................................................. 48
8 FRONT PANEL ............................................................................................................... 49
OVERVIEW ....................................................................................................................... 49
VERTICAL CONTROL ........................................................................................................ 50
HORIZONTAL CONTROL .................................................................................................... 51
TRIGGER CONTROL ......................................................................................................... 51
RUN/STOP BUTTON ....................................................................................................... 52
AUTO SETUP BUTTON ................................................................................................... 52
CURSORS CONTROL ........................................................................................................ 52
UNIVERSAL KNOB ............................................................................................................ 52
OTHER BUTTONS ............................................................................................................. 53
9 MULTIPLE APPROACHES TO RECALL FUNCTIONS .................................................. 54
MENU BAR ...................................................................................................................... 54
DESCRIPTOR BOX ............................................................................................................ 55
SHORTCUT BUTTON ON THE FRONT PANEL ....................................................................... 55
10 QUICKLY CAPTURE THE SIGNAL ................................................................................ 56
11 VERTICAL SETUP ......................................................................................................... 57
TURN ON/OFF A CHANNEL ................................................................................................ 57
CHANNEL SETUP ............................................................................................................. 58
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12 DIGITAL CHANNELS ..................................................................................................... 63
OVERVIEW ....................................................................................................................... 63
ENABLE/DISABLE THE DIGITAL CHANNELS ....................................................................... 64
DIGITAL CHANNEL SETUP ................................................................................................ 66
13 HORIZONTAL AND ACQUISITION SETUP .................................................................... 70
TIMEBASE SETUP ............................................................................................................ 70
ACQUISITION SETUP ........................................................................................................ 71
13.2.1 Overview ................................................................................................................. 71
13.2.2 Acquisition .............................................................................................................. 73
13.2.3 Memory Management ............................................................................................ 75
13.2.4 Roll Mode ............................................................................................................... 75
13.2.5 Sequence ............................................................................................................... 76
HISTORY .......................................................................................................................... 79
14 ZOOM ............................................................................................................................. 82
15 TRIGGER ........................................................................................................................ 85
OVERVIEW ....................................................................................................................... 85
TRIGGER SETUP .............................................................................................................. 86
TRIGGER LEVEL ............................................................................................................... 87
TRIGGER MODE ............................................................................................................... 88
TRIGGER TYPE ................................................................................................................ 89
15.5.1 Overview ................................................................................................................. 89
15.5.2 Edge Trigger ........................................................................................................... 90
15.5.3 Slope Trigger .......................................................................................................... 90
15.5.4 Pulse Trigger .......................................................................................................... 92
15.5.5 Video Trigger .......................................................................................................... 93
15.5.6 Window Trigger ....................................................................................................... 97
15.5.7 Interval Trigger ........................................................................................................ 98
15.5.8 Dropout Trigger ....................................................................................................... 99
15.5.9 Runt Trigger .......................................................................................................... 100
15.5.10 Pattern Trigger ...................................................................................................... 100
15.5.11 Qualified Trigger ................................................................................................... 102
15.5.12 Nth Edge Trigger .................................................................................................. 103
15.5.13 Delay Trigger ........................................................................................................ 104
15.5.14 Setup/Hold Trigger ............................................................................................... 104
15.5.15 Serial Trigger ........................................................................................................ 105
TRIGGER SOURCE ......................................................................................................... 105
HOLDOFF ...................................................................................................................... 106
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TRIGGER COUPLING ...................................................................................................... 107
NOISE REJECT ............................................................................................................... 108
ZONE TRIGGER .............................................................................................................. 109
16 SERIAL TRIGGER AND DECODE ............................................................................... 114
OVERVIEW ..................................................................................................................... 114
I2C TRIGGER AND SERIAL DECODE ................................................................................ 116
16.2.1 I2C Signal Settings ............................................................................................... 116
16.2.2 I2C Trigger ............................................................................................................ 117
16.2.3 I2C Serial Decode ................................................................................................ 121
SPI TRIGGER AND SERIAL DECODE ................................................................................ 123
16.3.1 SPI Signal Settings ............................................................................................... 123
16.3.2 SPI Trigger ............................................................................................................ 126
16.3.3 SPI Serial Decode ................................................................................................ 126
UART TRIGGER AND SERIAL DECODE ........................................................................... 127
16.4.1 UART Signal Settings ........................................................................................... 127
16.4.2 UART Trigger ........................................................................................................ 128
16.4.3 UART Serial Decode ............................................................................................ 128
CAN TRIGGER AND SERIAL DECODE.............................................................................. 129
16.5.1 CAN Signal Settings ............................................................................................. 129
16.5.2 CAN Trigger .......................................................................................................... 129
16.5.3 CAN Serial Decode .............................................................................................. 130
LIN TRIGGER AND SERIAL DECODE ................................................................................ 131
16.6.1 LIN Signal Settings ............................................................................................... 131
16.6.2 LIN Trigger ............................................................................................................ 131
16.6.3 LIN Serial Decode ................................................................................................ 132
FLEXRAY TRIGGER AND SERIAL DECODE ....................................................................... 133
16.7.1 FlexRay Signal Settings ....................................................................................... 133
16.7.2 FlexRay Trigger .................................................................................................... 133
16.7.3 FlexRay Serial Decode......................................................................................... 134
CAN FD TRIGGER AND SERIAL DECODE ........................................................................ 136
16.8.1 CAN FD Signal Settings ....................................................................................... 136
16.8.2 CAN FD Trigger .................................................................................................... 136
16.8.3 CAN FD Serial Decode ........................................................................................ 137
I2S TRIGGER AND SERIAL DECODE ................................................................................ 139
16.9.1 I2S Signal Settings ............................................................................................... 139
16.9.2 I2S Trigger ............................................................................................................ 140
16.9.3 I2S Serial Decode ................................................................................................ 141
MIL-STD-1553B TRIGGER AND SERIAL DECODE ........................................................... 142
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16.10.1 MIL-STD-1553B Signal Settings .......................................................................... 142
16.10.2 MIL-STD-1553B Serial Decode ............................................................................ 142
SENT TRIGGER AND SERIAL DECODE ............................................................................ 144
16.11.1 SENT Signal Settings ........................................................................................... 144
16.11.2 SENT Trigger ........................................................................................................ 144
16.11.3 SENT Serial Decode ............................................................................................ 148
MANCHESTER SERIAL DECODE ...................................................................................... 150
16.12.1 Manchester Signal Settings ................................................................................. 150
16.12.2 Manchester Serial Decode ................................................................................... 151
17 CURSORS .................................................................................................................... 152
OVERVIEW ..................................................................................................................... 152
SELECT AND MOVE CURSORS ........................................................................................ 158
18 MEASUREMENT .......................................................................................................... 160
OVERVIEW ..................................................................................................................... 160
SET PARAMETERS ......................................................................................................... 162
TYPE OF MEASUREMENT ................................................................................................ 165
18.3.1 Vertical Measurement .......................................................................................... 165
18.3.2 Horizontal Measurement ...................................................................................... 167
18.3.3 Miscellaneous Measurements .............................................................................. 168
18.3.4 Delay Measurement ............................................................................................. 169
TREND ........................................................................................................................... 171
TRACK .......................................................................................................................... 172
DISPLAY MODE .............................................................................................................. 172
MEASUREMENT STATISTICS ........................................................................................... 174
STATISTICS HISTOGRAM ................................................................................................. 176
SIMPLE MEASUREMENTS ............................................................................................... 177
GATE ............................................................................................................................. 177
AMPLITUDE STRATEGY .................................................................................................. 178
THRESHOLD .................................................................................................................. 179
HARDWARE FREQUENCY COUNTER ................................................................................ 180
19 MATH ............................................................................................................................ 181
OVERVIEW ..................................................................................................................... 181
ARITHMETIC................................................................................................................... 183
19.2.1 Addition / Subtraction / Multiplication / Division ................................................... 183
19.2.2 Identity / Negation ................................................................................................ 183
19.2.3 Average / ERES ................................................................................................... 184
19.2.4 Max-hold / Min-hold .............................................................................................. 184
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ALGEBRA ...................................................................................................................... 185
19.3.1 Differential ............................................................................................................ 185
19.3.2 Integral .................................................................................................................. 186
19.3.3 Square Root ......................................................................................................... 187
19.3.4 Absolute ................................................................................................................ 187
19.3.5 Sign....................................................................................................................... 188
19.3.6 exp10 .................................................................................................................... 189
19.3.7 lg ........................................................................................................................... 190
19.3.8 Interpolate ............................................................................................................. 190
FREQUENCY ANALYSIS .................................................................................................. 191
FORMULA EDITOR .......................................................................................................... 199
20 REFERENCE ................................................................................................................ 201
21 SEARCH....................................................................................................................... 203
22 NAVIGATE .................................................................................................................... 206
23 MASK TEST ................................................................................................................. 211
OVERVIEW ..................................................................................................................... 211
MASK SETUP ................................................................................................................. 213
23.2.1 Create Mask ......................................................................................................... 213
23.2.2 Mask Editor ........................................................................................................... 214
PASS/FAIL RULE ............................................................................................................ 216
OPERATION ................................................................................................................... 216
24 DVM .............................................................................................................................. 217
OVERVIEW ..................................................................................................................... 217
MODE ............................................................................................................................ 218
DIAGRAMS ..................................................................................................................... 219
25 COUNTER .................................................................................................................... 222
OVERVIEW ..................................................................................................................... 222
MODE ............................................................................................................................ 223
26 HISTOGRAM ................................................................................................................ 225
OVERVIEW ..................................................................................................................... 225
REGION SETTING ........................................................................................................... 227
27 POWER ANALYSIS ...................................................................................................... 230
OVERVIEW ..................................................................................................................... 230
POWER QUALITY ........................................................................................................... 230
CURRENT HARMONICS ................................................................................................... 233
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INRUSH CURRENT .......................................................................................................... 235
SWITCHING LOSS ........................................................................................................... 236
SLEW RATE ................................................................................................................... 239
MODULATION ................................................................................................................. 240
OUTPUT RIPPLE ............................................................................................................. 240
TURN ON/TURN OFF ...................................................................................................... 241
TRANSIENT RESPONSE .................................................................................................. 243
PSRR ........................................................................................................................... 244
POWER EFFICIENCY ....................................................................................................... 245
SOA ............................................................................................................................. 245
28 BODE PLOT ................................................................................................................. 248
OVERVIEW ..................................................................................................................... 248
CONFIGURATION ............................................................................................................ 249
28.2.1 Connection ........................................................................................................... 249
28.2.2 Sweep ................................................................................................................... 249
DISPLAY ........................................................................................................................ 252
DATA ANALYSIS ............................................................................................................. 254
29 DISPLAY....................................................................................................................... 257
30 ARBITRARY WAVEFORM GENERATOR ..................................................................... 265
OVERVIEW ..................................................................................................................... 265
OUTPUT ......................................................................................................................... 266
WAVE TYPE ................................................................................................................... 266
OTHER SETTING ............................................................................................................ 267
SYSTEM ......................................................................................................................... 269
31 SAVE/RECALL ............................................................................................................. 270
SAVE TYPE .................................................................................................................... 270
FILE MANAGER .............................................................................................................. 272
SAVE AND RECALL INSTANCES ....................................................................................... 273
32 UTILITY ........................................................................................................................ 277
SYSTEM INFORMATION ................................................................................................... 277
SYSTEM SETTING ........................................................................................................... 277
32.2.1 Language .............................................................................................................. 277
32.2.2 Screen Saver ........................................................................................................ 278
32.2.3 Beeper .................................................................................................................. 278
32.2.4 Auto Power-on ...................................................................................................... 278
32.2.5 Date/Time ............................................................................................................. 278
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32.2.6 Reference Position Setting ................................................................................... 279
SAVE BUTTON ............................................................................................................... 282
QUICK ACTION ............................................................................................................... 282
I/O SETTING .................................................................................................................. 283
32.5.1 LXI ........................................................................................................................ 283
32.5.2 LAN ....................................................................................................................... 283
32.5.3 Network Storage ................................................................................................... 284
32.5.4 Web Server ........................................................................................................... 285
32.5.5 Emulation .............................................................................................................. 285
INSTALL OPTIONS .......................................................................................................... 286
MAINTENANCE ............................................................................................................... 287
32.7.1 Upgrade ................................................................................................................ 287
32.7.2 Self-Test ................................................................................................................ 288
32.7.3 Self-Calibration ..................................................................................................... 291
32.7.4 Developer Options ................................................................................................ 292
33 REMOTE CONTROL .................................................................................................... 293
WEB BROWSER ............................................................................................................. 293
OTHER CONNECTIVITY ................................................................................................... 294
34 TROUBLESHOOTING .................................................................................................. 295
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1 Introduction
A digital oscilloscope is a multi-functional instrument for displaying, analyzing, and storing electrical
signals. It is an indispensable tool for designing, manufacturing, and maintaining electronic equipment.
This user manual includes important safety and installation information related to the SDS2000X HD
series of oscilloscopes and includes simple tutorials for the basic operation of the instrument.
The series includes the following models:
Model
Analogy
Bandwidth
Maximum Sampling Rate
Analog
Channel
SDS2354X HD 350 MHz 2 GSa/s @ each channel 4
SDS2204X HD 200 MHz 2 GSa/s @ each channel 4
SDS2104X HD 100 MHz 2 GSa/s @ each channel 4
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2 Important Safety Information
This manual contains information and warnings that must be followed by the user for safe operation
and to keep the product in a safe condition.
General Safety Summary
Carefully read the following safety precautions to avoid personal injury and prevent damage to the
instrument and any products connected to it. To avoid potential hazards, please use the instrument
as specified.
To Avoid Fire or Personal Injury.
Use Proper Power Line.
Only use a local/state-approved power cord for connecting the instrument to mains power sources.
Ground the Instrument.
The instrument grounds through the protective terra conductor of the power line. To avoid electric
shock, the ground conductor must be connected to the earth. Make sure the instrument is grounded
correctly before connecting its input or output terminals.
Connect the Signal Wire Correctly.
The potential of the signal wire is equal to the earth, so do not connect the signal wire to a high
voltage. Do not touch the exposed contacts or components.
Look over All Terminals’ Ratings.
To avoid fire or electric shock, please look over all ratings and signed instructions of the instrument.
Before connecting the instrument, please read the manual carefully to gain more information about
the ratings.
Equipment Maintenance and Service.
When the equipment fails, please do not dismantle the machine for maintenance. The equipment
contains capacitors, power supply, transformers, and other energy storage devices, which may cause
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high voltage damage. The internal devices of the equipment are sensitive to static electricity, and
direct contact can easily cause irreparable damage to the equipment. It is necessary to return to the
factory or the company's designated maintenance organization for maintenance. Be sure to pull out
the power supply when repairing the equipment. Live line operation is strictly prohibited. The
equipment can only be powered on when the maintenance is completed and the maintenance is
confirmed to be successful.
Identification of Normal State of Equipment.
After the equipment is started, there will be no alarm information and error information at the interface
under normal conditions. The curve of the interface will scan from left to right freely; if there is a pop-
up window or button during the scanning process or there is an alarm or error prompt, the device may
be in an abnormal state. You need to view the specific prompt information. You can try to restart the
instrument to see if it corrects the error condition. If the fault information is still in place, do not use
the instrument for testing. Contact the manufacturer or the maintenance department designated by
the manufacturer to carry out maintenance before reusing the product.
Not Operate with Suspected Failures.
If you suspect that there is damage to the instrument, please let qualified service personnel check it.
Avoid Circuit or Wire Exposed Components Exposed.
Do not touch exposed contacts or components when the power is on.
Do not operate in wet/damp conditions.
Do not operate in an explosive atmosphere.
Keep the surface of the instrument clean and dry.
Only probe assemblies that meet the requirement of UL61010-031 and CAN/CSA-C22.2
No.61010-031 shall be used.
Only a lithium battery with the same specifications as the original battery should be used to
replace the battery on board.
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Do not use the equipment for measurements on mains circuits. Do not use the equipment for
measurements on voltages exceeding the voltage ranges described in the manual. The
maximum additional transient voltage cannot exceed 1300 V.
The responsible body or operator should refer to the instruction manual to preserve the
protection afforded by the equipment. If the equipment is used in a manner not specified by
the manufacturer, the protection provided by the equipment may be impaired.
Any parts of the device and its accessories are not allowed to be changed or replaced, other
than authorized by the manufacturer or agent.
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Safety Terms and Symbols
When the following symbols or terms appear on the front or rear panel of the instrument or in this
manual, they indicate special care in terms of safety.
This symbol is used where caution is required. Refer to the accompanying
information or documents to protect against personal injury or damage to the
instrument.
This symbol warns of a potential risk of shock hazard.
This symbol is used to denote the measurement ground connection.
This symbol is used to denote a safety ground connection.
This symbol shows that the switch is an On/Standby switch. When it is pressed,
the scope’s state switches between Operation and Standby. This switch does not
disconnect the device's power supply. To completely power off the scope, the
power cord must be unplugged from the AC socket after the oscilloscope is in the
standby state.
This symbol is used to represent alternating current, or "AC".
CAUTION The "CAUTION" symbol indicates a potential hazard. It calls attention to a
procedure, practice, or condition which may be dangerous if not followed. Do not
proceed until its conditions are fully understood and met.
WARNING The "WARNING" symbol indicates a potential hazard. It calls attention to a
procedure, practice, or condition that, if not followed, could cause bodily injury or
death. If a WARNING is indicated, do not proceed until the safety conditions are
fully understood and met.
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Working Environment
The design of the instrument has been verified to conform to EN 61010-1 safety standard per the
following limits:
Environment
The instrument is used indoors and should be operated in a clean and dry environment with an
ambient temperature range.
Note: Direct sunlight, electric heaters, and other heat sources should be considered when
evaluating the ambient temperature.
Warning: Do not operate the instrument in explosive, dusty, or humid
environments.
Ambient Temperature
Operating: 0 ℃ to +50 ℃
Non-operation: -30 ℃ to +70 ℃
Note: Direct sunlight, radiators, and other heat sources should be taken into account when assessing
the ambient temperature.
Humidity
Operating: 5% ~ 90 %RH, 30 , derate to 50 %RH at 50
Non-operating: 5% ~ 95% RH
Altitude
Operating: ≤3,000 m, 25 ℃
Non-operating: ≤15,000m
Installation (overvoltage) Category
This product is powered by mains conforming to installation (overvoltage) Category II.
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Note: Installation (overvoltage) category I refers to situations where equipment measurement
terminals are connected to the source circuit. In these terminals, precautions are done to limit the
transient voltage to a correspondingly low level.
Installation (overvoltage) category II refers to the local power distribution level which applies to
equipment connected to the AC line (AC power).
Degree of Pollution
The oscilloscopes may be operated in environments of Pollution Degree II.
Note: Degree of Pollution II refers to a working environment that is dry and non-conductive pollution
occurs. Occasional temporary conductivity caused by condensation is expected.
IP Rating
IP20 (as defined in IEC 60529).
Cooling Requirements
This instrument relies on forced air cooling with internal fans and ventilation openings. Care must be
taken to avoid restricting the airflow around the apertures (fan holes) on each side of the scope. To
ensure adequate ventilation it is required to leave a 15 cm (6 inch) minimum gap around the sides of
the instrument.
CAUTION: Do not block the ventilation holes located on both sides of the
scope.
CAUTION: Do not allow any foreign matter to enter the scope through the
ventilation holes, etc.
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Power and Grounding Requirements
The instrument operates with a single-phase, 100 to 240 Vrms (+/-10%) AC power at 50/60 Hz (+/-
5%).
No manual voltage selection is required because the instrument automatically adapts to line voltage.
Depending on the type and number of options and accessories (probes, PC port plug-in, etc.), the
instrument can consume up to 193 W of power.
Note: The instrument automatically adapts to the AC line input within the following ranges:
Voltage Range: 90 - 264 Vrms 90 - 132 Vrms
Frequency Range: 47 - 63 Hz 380 - 420 Hz
The instrument includes a grounded cord set containing a molded three-terminal polarized plug and
a standard IEC320 (Type C13) connector for making line voltage and safety ground connections. The
AC inlet ground terminal is connected directly to the frame of the instrument. For adequate protection
against electrical shock hazards, the power cord plug must be inserted into a mating AC outlet
containing a safety ground contact. Use only the power cord specified for this instrument and certified
for the country of use.
Warning: Electrical Shock Hazard!
Any interruption of the protective conductor inside or outside of the
scope, or disconnection of the safety ground terminal creates a
hazardous situation.
Intentional interruption is prohibited.
The position of the oscilloscope should allow easy access to the socket. To make the oscilloscope
completely power off, unplug the instrument power cord from the AC socket.
The power cord should be unplugged from the AC outlet if the scope is not to be used for an
extended period.
CAUTION: The outer shells of the front panel terminals (CH1, CH2, CH3,
CH4, EXT) are connected to the instrument’s chassis and
therefore to the safety ground.
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Cleaning
Clean only the exterior of the instrument, using a damp, soft cloth. Do not use chemicals or abrasive
elements. Under no circumstances allow moisture to penetrate the instrument. To avoid electrical
shock, unplug the power cord from the AC outlet before cleaning.
Warning: Electrical Shock Hazard!
No operator serviceable parts inside. Do not remove covers.
Refer servicing to qualified personnel
Abnormal Conditions
Do not operate the scope if there is any visible sign of damage or has been subjected to severe
transport stresses.
If you suspect the scope’s protection has been impaired, disconnect the power cord and secure the
instrument against any unintended operation.
Proper use of the instrument depends on the careful reading of all instructions and labels.
Warning: Any use of the scope in a manner not specified by the manufacturer
may impair the instrument’s safety protection. This instrument
should not be directly connected to human subjects or used for
patient monitoring.
Safety Compliance
This section lists the safety standards with which the product complies.
U.S. nationally recognized testing laboratory listing
UL 61010-1:2012/R: 2018-11. Safety Requirements for Electrical Equipment for Measurement,
Control, and Laboratory Use – Part 1: General Requirements.
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UL 61010-2-030:2018. Safety Requirements for Electrical Equipment for Measurement,
Control, and Laboratory Use – Part2-030: Particular requirements for testing and measuring
circuits.
Canadian certification
CAN/CSA-C22.2 No. 61010-1:2012/A1:2018-11. Safety Requirements for Electrical Equipment
for Measurement, Control, and Laboratory Use – Part 1: General Requirements.
CAN/CSA-C22.2 No. 61010-2-030:2018. Safety Requirements for Electrical Equipment for
Measurement, Control, and Laboratory Use – Part 2-030: Particular requirements for testing
and measuring circuits.
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Informations essentielles sur la sécurité
Ce manuel contient des informations et des avertissements que les utilisateurs doivent suivre pour
assurer la sécurité des opérations et maintenir les produits en sécurité.
Exigence de Sécurité
Lisez attentivement les précautions de sécurité ci - après afin d 'éviter les dommages corporels et de
prévenir les dommages aux instruments et aux produits associés. Pour éviter les risques potentiels,
utilisez les instruments prescrits.
Éviter l 'incendie ou les lésions corporelles.
Utilisez un cordon d'alimentation approprié.
N'utilisez que des cordons d'alimentation spécifiques aux instruments approuvés par les autorités
locales.
Mettez l'instrument au sol.
L'instrument est mis à la Terre par un conducteur de mise à la terre de protection du cordon
d'alimentation.Pour éviter un choc électrique, le conducteur de mise à la terre doit être mis à la
terre.Assurez - vous que l'instrument est correctement mis à la terre avant de connecter les bornes
d'entrée ou de sortie de l'instrument.
Connectez correctement le fil de signalisation.
Le potentiel de la ligne de signal est égal au potentiel au sol, donc ne connectez pas la ligne de signal
à haute tension.Ne touchez pas les contacts ou les composants exposés.
Voir les cotes de tous les terminaux.
Pour éviter un incendie ou un choc électrique, vérifiez toutes les cotes et signez les instructions de
l'instrument.Avant de brancher l'instrument, lisez attentivement ce manuel pour obtenir de plus
amples renseignements sur les cotes.
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Entretien du matériel.
En cas de défaillance de l'équipement, ne pas démonter et entretenir l'équipement sans autorisation.
L'équipement contient des condensateurs, de l'alimentation électrique, des transformateurs et
d'autres dispositifs de stockage d'énergie, ce qui peut causer des blessures à haute tension. Les
dispositifs internes de l'équipement sont sensibles à l'électricité statique. Le contact direct peut
facilement causer des blessures irrécupérables à l'équipement. L'équipement doit être retourné à
l'usine ou à l'organisme de maintenance désigné par l'entreprise pour l'entretien. L'alimentation
électrique doit être retirée pendant l'entretienLa ligne ne doit pas être mise sous tension tant que
l'entretien de l'équipement n'est pas terminé et que l'entretien n'est pas confirmé.
Identification de l'état normal de l'équipement.
Après le démarrage de l'équipement, dans des conditions normales, il n'y aura pas d'information
d'alarme et d'erreur au bas de l'interface, et la courbe de l'interface sera balayée librement de gauche
à droite; si un blocage se produit pendant le processus de numérisation, ou si l'information d'alarme
ou d'erreur apparaît au bas de l'interface, l'équipement peut être dans un état anormal. Pour voir
l'information d'alarme spécifique, vous pouvez d'abord essayer de redémarrerSi l'information sur la
défaillance est toujours présente, ne l'utilisez pas pour l'essai. Contactez le fabricant ou le Service de
réparation désigné par le fabricant pour effectuer l'entretien afin d'éviter d'apporter des données
d'essai erronées ou de mettre en danger la sécurité personnelle en raison de l'utilisation de la
défaillance.
Ne pas fonctionner en cas de suspicion de défaillance.
Si vous soupçonnez des dommages à l'instrument, demandez à un technicien qualifié de vérifier.
L 'exposition du circuit ou de l' élément d 'exposition du fil est évitée.
Lorsque l 'alimentation est connectée, aucun contact ou élément nu n' est mis en contact.
Ne pas fonctionner dans des conditions humides / humides.
Pas dans un environnement explosif.
Maintenez la surface de l 'instrument propre et sec.
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Le Circuit d 'alimentation électrique ne peut pas être mesuré à l' aide du dispositif, ni la tension
qui dépasse la plage de tension décrite dans le présent manuel.
Seuls les ensembles de sondes conformes aux spécifications du fabricant peuvent être
utilisés.
L'organisme ou l'opérateur responsable doit se référer au cahier des charges pour protéger la
protection offerte par le matériel.La protection offerte par le matériel peut être compromise si
celui - ci est utilisé de manière non spécifiée par le fabricant.
Aucune pièce du matériel et de ses annexes ne peut être remplacée ou remplacée sans
l'autorisation de son fabricant.
Remplacer la batterie dans l 'appareil avec les mêmes spécifications de batterie au lithium.
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Termes et symboles de sécurité
Lorsque les symboles ou termes suivants apparaissent sur le panneau avant ou arrière de
l'instrument ou dans ce manuel, ils indiquent un soin particulier en termes de sécurité.
Ce symbole est utilisé lorsque la prudence est requise. Reportez-vous aux
informations ou documents joints afin de vous protéger contre les blessures ou
les dommages à l'instrument.
Ce symbole avertit d'un risque potentiel de choc électrique.
Ce symbole est utilisé pour désigner la connexion de terre de mesure.
Ce symbole est utilisé pour indiquer une connexion à la terre de sécurité.
Ce symbole indique que l'interrupteur est un interrupteur marche / veille.
Lorsqu'il est enfoncé, l'état de l'oscilloscope bascule entre Fonctionnement et
Veille. Ce commutateur ne déconnecte pas l'alimentation de l'appareil. Pour
éteindre complètement l'oscilloscope, le cordon d'alimentation doit être
débranché de la prise secteur une fois l'oscilloscope en état de veille.
Ce symbole est utilisé pour représenter un courant alternatif, ou "AC".
CAUTION Le symbole " CAUTION" indique un danger potentiel. Il attire l'attention sur une
procédure, une pratique ou une condition qui peut être dangereuse si elle n'est
pas suivie. Ne continuez pas tant que ses conditions n'ont pas été entièrement
comprises et remplies.
WARNING Le symbole " WARNING" indique un danger potentiel. Il attire l'attention sur une
procédure, une pratique ou une condition qui, si elle n'est pas suivie, pourrait
entraîner des blessures corporelles ou la mort. Si un AVERTISSEMENT est
indiqué, ne continuez pas tant que les conditions de sécurité ne sont pas
entièrement comprises et remplies.
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Environnement de travail
La conception de l'instrument a été certifiée conforme à la norme EN 61010-1, sur la base des valeurs
limites suivantes:
Environnement
L'instrument doit être utilisé à l'intérieur dans un environnement propre et sec dans la plage de
température ambiante.
Note: la lumière directe du soleil, les réchauffeurs électriques et d'autres sources de chaleur doivent
être pris en considération lors de l'évaluation de la température ambiante.
Attention: ne pas utiliser l'instrument dans l'air explosif, poussiéreux ou
humide.
Température ambiante
En fonctionnement: 0 ℃ à +50 ℃
Hors fonctionnement: -30 ℃ à +70 ℃
Note: pour évaluer la température de l'environnement, il convient de tenir compte des rayonnements
solaires directs, des radiateurs thermiques et d'autres sources de chaleur.
Humidité
Fonctionnement: 5% ~ 90% HR, 30 °C, 40 °C réduit à 50% HRHors fonctionnement: 5% ~ 95%,
65 ℃, 24 heures
Altitude
Fonctionnement: ≤ 3000 m
À l'arrêt: ≤ 12,191 m
Catégorie d 'installation (surtension)
Ce produit est alimenté par une alimentation électrique conforme à l 'installation (surtension)
Catégorie II.
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Installation (overvoltage) Category Definitions Définition de catégorie d 'installation
(surtension)
La catégorie II d'installation (surtension) est un niveau de signal applicable aux terminaux de mesure
d' équipement reliés au circuit source.Dans ces bornes, des mesures préventives sont prises pour
limiter la tension transitoire à un niveau inférieur correspondant.
La catégorie II d'installation (surtension) désigne le niveau local de distribution d 'énergie d' un
équipement conçu pour accéder à un circuit alternatif (alimentation alternative).
Degré de pollution
Un oscilloscope peut être utilisé dans un environnement Pollution Degree II.
Note: Pollution Degree II signifie que le milieu de travail est sec et qu'il y a une pollution non
conductrice.Parfois, la condensation produit une conductivité temporaire.
IP Rating
IP20 (as defined in IEC 60529).
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Exigences de refroidissement
Cet instrument repose sur un refroidissement à air forcé avec des ventilateurs internes et des
ouvertures de ventilation. Des précautions doivent être prises pour éviter de restreindre le flux d'air
autour des ouvertures (trous de ventilateur) de chaque côté de la lunette. Pour assurer une ventilation
adéquate, il est nécessaire de laisser un espace minimum de 15 cm (6 pouces) sur les côtés de
l'instrument.
ATTENTION: Ne bloquez pas les trous de ventilation situés des deux côtés
de la lunette.
ATTENTION: Ne laissez aucun corps étranger pénétrer dans la lunette par
les trous de ventilation, etc.
Connexions d'alimentation et de terre
L'instrument fonctionne avec une alimentation CA monophasée de 100 à 240 Vrms (+/- 10%) à
50/60 Hz (+/- 5%), ou monophasée 100 - 120 Vrms (+/-10 %) Alimentation CA à 400 Hz (+/-5%).
Aucune sélection manuelle de la tension n'est requise car l'instrument s'adapte automatiquement à
la tension de ligne.
Selon le type et le nombre d'options et d'accessoires (sondes, plug-in de port PC, etc.), l'instrument
peut consommer jusqu'à 193 W d'énergie.
Remarque: l'instrument s'adapte automatiquement à l'entrée de ligne CA dans les plages
suivantes:
Plage de tension: 90 - 264 Vrms 90 - 132 Vrms
Gamme de fréquences: 47 - 63 Hz 380 - 420 Hz
L'instrument comprend un jeu de cordons mis à la terre contenant une fiche polarisée à trois bornes
moulée et un connecteur standard IEC320 (Type C13) pour établir la tension de ligne et la connexion
de mise à la terre de sécurité. La borne de mise à la terre de l'entrée CA est directement connectée
au châssis de l'instrument. Pour une protection adéquate contre les risques d'électrocution, la fiche
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du cordon d'alimentation doit être insérée dans une prise secteur correspondante contenant un
contact de sécurité avec la terre. Utilisez uniquement le cordon d'alimentation spécifié pour cet
instrument et certifié pour le pays d'utilisation.
Avertissement: risque de choc électrique!
Toute interruption du conducteur de terre de protection à
l'intérieur ou à l'extérieur de la portée ou la déconnexion de
la borne de terre de sécurité crée une situation dangereuse.
L'interruption intentionnelle est interdite.
La position de l'oscilloscope doit permettre un accès facile à la prise. Pour éteindre complètement
l'oscilloscope, débranchez le cordon d'alimentation de l'instrument de la prise secteur.
Le cordon d'alimentation doit être débranché de la prise secteur si la lunette ne doit pas être utilisée
pendant une période prolongée.
ATTENTION: les enveloppes extérieures des bornes du panneau avant
(CH1, CH2, CH3, CH4, EXT) sont connectées au châssis de
l'instrument et donc à la terre de sécurité.
Nettoyage
Nettoyez uniquement l'extérieur de l'instrument à l'aide d'un chiffon doux et humide. N'utilisez pas
de produits chimiques ou d'éléments abrasifs. Ne laissez en aucun cas l'humidité pénétrer dans
l'instrument. Pour éviter les chocs électriques, débranchez le cordon d'alimentation de la prise
secteur avant de le nettoyer.
Avertissement: risque de choc électrique!
Aucune pièce réparable par l'opérateur à l'intérieur. Ne
retirez pas les capots.
Confiez l'entretien à un personnel qualifié
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Conditions anormales
Utilisez l'instrument uniquement aux fins spécifiées par le fabricant.
N'utilisez pas la lunette s'il y a des signes visibles de dommages ou si elle a été soumise à de fortes
contraintes de transport.
Si vous pensez que la protection de l'oscilloscope a été altérée, débranchez le cordon d'alimentation
et sécurisez l'instrument contre toute opération involontaire.
Une bonne utilisation de l'instrument nécessite la lecture et la compréhension de toutes les
instructions et étiquettes.
Avertissement: Toute utilisation de l'oscilloscope d'une manière non
spécifiée par le fabricant peut compromettre la protection de
sécurité de l'instrument. Cet instrument ne doit pas être
directement connecté à des sujets humains ni utilisé pour la
surveillance des patients.
Conformité en matière de sécurité
La présente section présente les normes de sécurité applicables aux produits.
U.S. nationally recognized testing laboratory listing
■ UL 61010-1:2012/R:2018-11. Prescriptions en matière de sécurité pour les appareils électriques
utilisés en laboratoire et de mesure - partie 1: prescriptions générales.
■ UL 61010-2-030:2018. Prescriptions de sécurité pour les appareils électriques de mesure, de
contrôle et de laboratoire - partie 2 - 030: prescriptions spéciales pour les circuits d 'essai et de mesure.
Canadian certification
■ CAN/CSA-C22.2 No. 61010-1:2012/A1:2018-11. Prescriptions en matière de sécurité pour les
appareils électriques utilisés en laboratoire et de mesure - partie 1: prescriptions générales.
■ CAN/CSA-C22.2 No. 61010-2-030:2018. Prescriptions de sécurité pour les appareils électriques
de mesure, de contrôle et de laboratoire - partie 2 - 030: prescriptions spéciales pour les circuits d
'essai et de mesure.
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3 First Steps
Delivery Checklist
First, verify that all items listed on the packing list have been delivered. If you note any omissions or
damage, please contact your nearest SIGLENT customer service center or distributor as soon as
possible. If you fail to contact us immediately in case of omission or damage, we will not be
responsible for replacement.
Quality Assurance
The oscilloscope has a 3-year warranty (1-year warranty for probes and accessories) from the date
of shipment, during normal use and operation. SIGLENT can repair or replace any product that is
returned to the authorized service center during the warranty period. We must first examine the
product to make sure that the defect is caused by the process or material, not by abuse, negligence,
accident, abnormal conditions, or operation.
SIGLENT shall not be responsible for any defect, damage, or failure caused by any of the following:
a) Attempted repairs or installations by personnel other than SIGLENT.
b) Connection to incompatible devices/incorrect connection.
c) For any damage or malfunction caused by the use of non-SIGLENT supplies. Furthermore,
SIGLENT shall not be obligated to service a product that has been modified. Spare,
replacement parts, and repairs have a 90-day warranty.
The oscilloscope's firmware has been thoroughly tested and is presumed to be functional.
Nevertheless, it is supplied without a warranty of any kind covering detailed performance. Products
not made by SIGLENT are covered solely by the warranty of the original equipment manufacturer.
Maintenance Agreement
We provide various services based on maintenance agreements. We offer extended warranties as
well as installation, training, enhancement and on-site maintenance, and other services through
specialized supplementary support agreements. For details, please consult your local SIGLENT
customer service center or distributor.
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4 Document Conventions
For convenience, text surrounded by a box border is used to represent the button of the front panel.
For example, Default represents the "Default" button on the front panel. Italicized text with shading
is used to represent the touchable or clickable menu/button/region on the touch screen. For example,
Display represents the "Display" menu on the screen:
For the operations that contain multiple steps, the description is in the form of "Step 1 > Step 2 >...".
As an example, follow each step in the sequence to enter the upgrade interface:
Utility ＞ Menu ＞ Maintenance ＞ Upgrade
Click the Utility ＞ Menu in the menu bar as step 1, click the Maintenance option on the
screen as step 2, and click the Update option on the screen as step 3 to enter the upgrade
interface.
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5 Getting Started
Mechanical Dimensions
Front View
Top View
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Adjust the Supporting Legs
Adjust the supporting legs properly to use them as stands to tilt the oscilloscope upwards for stable
placement as well as easier operation and observation of the instrument.
Power on
SDS2000X HD provides two ways for power on, which are:
Auto Power-on
When the “Auto Power-on” option is enabled, once the oscilloscope is connected to the AC power
supply through the power cord, the oscilloscope boots automatically. This is useful in automated or
remote applications where physical access to the instrument is difficult or impossible.
Steps for enabling the "Auto Power-on" function:
Utility ＞ Menu ＞ System Setting ＞ Auto Power On
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Power on by Manual
When the " Auto Power-on” option is disabled, the power button on the front panel is the only control
for the power state of the oscilloscope.
Shut down
Press the power button to turn off the oscilloscope. Or follow the steps below:
Utility ＞ Shutdown
Note: The Power button does not disconnect the oscilloscope from the AC power supply. The only
way to fully power down the instrument is to unplug the AC power cord from the outlet. The power
cord should be unplugged from the AC outlet if the scope is not to be used for an extended period.
System Information
Follow the steps below to examine the software and hardware versions of the oscilloscope.
Utility > Menu ＞ System Info
See the section "System Information" for details.
Install Options
A license is necessary to unlock a software option. See the section "Install Option" for details.
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6 Quick Start
Front Panel Overview
A. Touch Screen Display: The display and major functions area. See the "Touch Screen
Display" chapter for more details
B. Front Panel: Includes knobs and buttons. See the "Front Panel" chapter for more details
C. Probe Compensation/ Ground Terminal: Supplies a 0-3 V, 1 kHz square wave for
compensating the probes
D. USB 2.0 Host Ports: Connect the USB host ports to USB storage devices for data transfer
or a USB mouse/keyboard for control
E. Digital Input Connector: Receives digital signals from the SPL2016 digital probe
F. Analog Input Connectors
G. Power Switch
H. Supporting Legs: Adjust the supporting legs properly to use them as stands to tilt the
oscilloscope for stable positioning of the oscilloscope
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Rear Panel Overview
A. Ext Trigger Input
B. Auxiliary Out: Outputs the trigger indicator. When Mask Test is enabled, outputs the pass
/ fail signal
C. WaveGen:
Built-in waveform generator output
D. 100M LAN Port: Connect the port to the network for remote control
E. USB 2.0 Device Port: Connect with a PC for remote control
F. USB 2.0 Host Port: connect with a USB storage device or USB mouse/keyboard
G. AC Power Input
H. Handle
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Connecting to External Devices/Systems
6.3.1 Power Supply
The standard power supply for the instrument is 100~240 V, 50/60 Hz. Please use the power cord
provided with the instrument to connect it to AC power.
6.3.2 LAN
Connect the LAN port to the network with a network cable with an RJ45 connector for remote control.
See chapter “Remote Control” for detailed information on controlling the instrument with a computer.
Follow the steps below to set LAN connection:
Utility
＞
Menu
＞
I/O
＞
LAN Config
See section “LAN” for details of the configuration.
6.3.3 USB Peripherals
Connect a USB storage device (FAT32 format recommended) to one of the USB host ports for data
transfer, or connect a USB mouse/keyboard to one of the USB host ports for controlling the instrument.
See chapter “Save/Recall” for details of data transfer.
6.3.4 Auxiliary Output
When Mast Test is enabled, the port outputs the pass/fail signal, otherwise, it outputs the trigger
indicator. The trigger indicator can be used to measure the waveform capture rate.
See the chapter "Mask Test" for more details on the pass/fail output.
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6.3.5 Waveform Generator
The SDS2000X HD has a built-in function/arbitrary waveform generator module installed at the factory.
Purchase the "SDS2000HD-FG" option to activate the function generator function.
You can also purchase an external SAG1021I function/arbitrary waveform generator module with
isolated output to use as a waveform generator. Connect the SAG1021I to any USB host port of the
oscilloscope through a USB cable. To use the SAG1021I, you also need to purchase the
"SDS2000HD-FG" software activation option.
Press the WaveGen button on the front panel or touch the screen Utility
＞
Wave Gen to
set the waveform. See chapters ”Arbitrary Waveform Generator” and “Bode Plot” for more relative
information.
6.3.6 Probes
The SDS2000X HD series oscilloscope supports active probes and passive probes. The
specifications and probe documents can be obtained at
int.siglent.com, www.siglentna.com, or
www.siglenteu.com.
Probe Compensation
When a passive probe is used for the first time, you should compensate it to match the input channel
of the oscilloscope. Non-compensated or poorly compensated probes may increase measurement
inaccuracy or error. The probe compensation procedures are as follows:
1. Connect the coaxial cable interface (BNC connector) of the passive probe to any channel
of the oscilloscope.
2. Connect the probe to the “Compensation Signal Output Terminal” (Cal) on the front of the
oscilloscope. Connect the ground alligator clip of the probe to the “Ground Terminal” under
the compensation signal output terminal.
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3. Press the Auto Setup button.
4. Check the waveform displayed and compare it with the following.
Under
Compensated
Perfectly
Compensated
Over
Compensated
5. Use a non-metallic driver to adjust the low-frequency compensation adjustment hole on the
probe until the waveform displayed is as the “Perfectly compensated” in the figure above.
It’s not necessary to compensate active probes like the SIGLENT SAP series.
6.3.7 Logic Probe
To connect the logic probe: Insert the probe, with the correct side facing up, until you hear a “click”.
To remove the logic probe: Depress the buttons on each side of the probe, then pull out it.
See chapter “Digital Channels” for more information.
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7 Touch Screen Display
Overview
The entire SDS2000X HD display is a capacitive touch screen. Use your fingers to touch, drag, pinch,
spread, or draw a selection box. Many controls that display information also work as “buttons” to
access other functions. If you are using a mouse, you can click anywhere that you can touch to
activate a control. You can alternate between clicking and touching the control, whichever is most
convenient.
A. Menu Bar
B. Grid Area
C. Trigger Level Indicator
D. Cursors
E. Channel Descriptor Boxes
F. Trigger Delay Indicator
G. Timebase and Trigger Descriptor Boxes
H. Dialog Box
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Trigger Level Line (Vertical) and Trigger Delay Indicator (Horizontal) show the trigger position of
the waveform.
Cursors show where measurement points have been set. Move the cursors to quickly reposition the
measurement point.
Channel Descriptor boxes include analog channels (Cx), digital channels (D), math (Fx), and
reference (Ref). They are located under the grid area, showing the parameters of the corresponding
traces. Touching the boxes creates a dialog box.
Timebase and Trigger Descriptor boxes show the parameters of the timebase and trigger
respectively. Touching the boxes creates a dialog box for the selected item.
The backlight of the display is adjustable. Follow the steps below to adjust the backlight:
Display
＞
Menu
＞
LCD Brightness
Menu Bar
Menu bar with drop-down menus lets you access set-up dialogs and other functions. All functionality
can be accessed through the menu bar. It is not necessary for common operations. You can enter
most menus by using the front panel or parameter description labels instead of the menu bar.
However, the following operations can only be accessed through the menu bar:
Utility > Help
Utility > Reboot
Display
Acquire
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Grid Area
The grid area displays the waveform traces. Traces can be moved by dragging and re-scaled by pinch
and spread. The area is divided into 8 (vertical) * 10 (horizontal) grids. The best display effect can be
obtained by adjusting the waveform intensity and graticule. Follow the steps below to set these
parameters:
Display
＞
Menu
＞
Intensity ，
Display
＞
Menu
＞
Graticule
There are multiple indicators on the grid:
Trigger Level Indicator shows the level
where the waveform triggers on the
vertical axis.
Trigger Delay Indicator locates where
the waveform triggers on the horizontal
axis... When the trigger position is outside
the screen, the direction of the triangle
points outside the screen as well.
Channel Offset Indicator with a channel
number shows the offset position of the
corresponding channel.
The user can choose to show the axis labels or not by:
Display
＞
Menu
＞
Axis label Setting
Axis label = on
Axis label = off
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Channel Descriptor Box
Channel Descriptor boxes include analog channels (Cx), digital channels (D), math (Fx), and
reference (Ref). They are located under the grid area, showing the parameters of the corresponding
traces. Touching the boxes creates a dialog box. See chapter “Vertical Setup” for more details. Below
is an example for analog channel 1:
A. Channel Index
B. Coupling and Input Impedance
C. Vertical Scale
D. Vertical Offset
E. Bandwidth Information
F. Probe Attenuation Factor
Bandwidth Information:
The bandwidth information is indicated by the following icons:
: 20 MHz bandwidth limit
: 200 MHz bandwidth limit
: On the 500 MHz model, anti-aliasing filter is automatically turned on when the channel is in
non-interleaving mode (i.e. sample rate ≤ 1 GSa/s). The bandwidth of the anti-aliasing filter
is around 350 MHz bandwidth
: Full bandwidth
Invert Indicator: shows that the current channel is inverted:
: Invert has been turned on
None: Invert has been turned off
Coupling and Input Impedance:
：
DC coupling, 1 MΩ impedance
：
DC coupling, 50 Ω impedance
：
AC coupling, 1 MΩ impedance
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：
AC coupling, 50 Ω impedance
：
Ground
Vertical Scale: The scale of each grid in the vertical direction. For example, when the vertical scale
is 1.00 V/div, the full scale of the oscilloscope is 1.00 V/div * 8 div=8 V.
Vertical Offset: The offset of the channel in the vertical direction. When the vertical offset is 0, the
channel offset indicator is located in the middle of the vertical axis.
Probe Attenuation Factor: Set the probe attenuation factor to match the actual attenuation of the
probe. The oscilloscope automatically calculates the vertical scale according to the probe attenuation
factor. For example, the vertical scale of the oscilloscope is 100mV/div with 1X attenuation, and 1V/div
if the attenuation factor is changed to 10X. When inserting a standard 10X passive probe with a probe
sense terminal, the oscilloscope will automatically set the factor to 10X.
：
1:1 attenuation, suitable for direct coaxial cable connection or passive probes with 1X
attenuation
：
10:1 attenuation, suitable for general passive probes or active probes with 10X attenuation
：
100:1 attenuation, suitable for some high-voltage probes
：
Custom attenuation factor
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Timebase and Trigger Descriptor Boxes
The Timebase Descriptor box shows the parameters of the timebase. See chapter “Horizontal and
Acquisition Setup” for more information.
A. Trigger delay
B. Horizontal scale (timebase)
C. # Samples
D. Sample Rate
Trigger delay: The time offset of trigger position. When trigger delay is 0, the trigger delay indicator
is in the center of the horizontal axis of the grid area.
Horizontal scale: Timebase, the time of each grid in the horizontal direction. For example, if the scale
is 500us/div, the time of each grid is 500 us, and the full-screen time range of the oscilloscope is 500
us/div * 10 div = 5 ms.
# Samples: The number of sample points on the current screen.
Sample Rate: The current sample rate.
The Trigger Descriptor box shows the parameters of the trigger setting. See chapter “Trigger” for
detailed information.
A. Trigger source
B. Trigger coupling
C. Trigger mode
D. Trigger level
E. Trigger type
F. Trigger slope
Trigger source
C1~C4:Analog channels
EXT: External trigger channel
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EXT/5:5x attenuation of external trigger channel
AC Line: AC mains supply
D0~D15: Digital channels
Trigger coupling: Coupling mode of the current trigger source. It is only valid when the trigger source
is C1~C4, EXT, or EXT/5.
DC: All the signal’s frequency components are coupled to the trigger circuit for high-frequency
bursts or where the use of AC coupling would shift the effective trigger level.
AC: The signal is capacitively coupled. DC levels are rejected. See the datasheet for details of
the cut-off frequency.
HFR: Signals are DC coupled to the trigger circuit, and a low-pass filter network attenuates high
frequencies (used for triggering on low frequencies). See the datasheet for details of the cut-
off frequency.
LFR: The signal is coupled through a capacitive high-pass filter network, DC is rejected and low
frequencies are attenuated. For stable triggering on medium to high-frequency signals. See the
datasheet for details of the cut-off frequency.
Trigger mode
Auto: The oscilloscope will sweep without a set trigger. An internal timer triggers the sweep after
a preset timeout period so that the display refreshes continuously. This is helpful when first
analyzing unknown signals. Otherwise, Auto functions the same as Normal when a trigger
condition is found.
Normal: Sweeps only if the input signal meets the trigger condition. Otherwise, it continues to
display the last acquired waveform.
Single: Stops the acquisition and displays the last acquired waveform.
Trigger level: The source voltage level or levels that mark the threshold for the trigger to fire. Trigger
levels specified in Volts normally remain unchanged when the vertical gain or offset is modified.
Trigger type: See the chapter "Trigger" for details.
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Dialog Box
The dialog box on the right side of the screen is the main area for setting the parameters of the
selected function.
A. Title bar. Touching the bar can hide
the dialog box, and touching again
can open the dialog box.
B. Parameter setting area.
C. Scroll bar. When parameters are more
than the displayed range, the blue
scrollbar will be displayed. By sliding
the dialog area up and down, or rolling
the mouse wheel, it can scroll to the
area not displayed.
To Set Parameters
The SDS2000X HD provides a couple of different ways to input/select parameters:
Switch: Sets parameters with two states, such as to enable
or disable a function. Touch the switch region to change from
one state to the other.
List: Sets parameters with more than two
options, such as coupling mode of
channels. Touch the parameter region,
and then select the expected option from
the pop-up list.
Virtual Keypad: Sets parameters with a numerical value.
Touch the parameter region, and the parameter can be
adjusted by the universal knob on the front panel or by the
mouse wheel; touch the region again, then the virtual keypad
appears：
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Let’s use the operation of setting the
“deskew” of a channel as an example: If
the expected value is 65 ns, input “65” on
the virtual keypad, and then choose the
units n to complete the operation. On
the virtual keypad, touching the button
Max , Min , and Default quickly
sets the parameter to the maximum,
minimum, and default values.
Hide the Dialog Box
When the menu style is set to Embedded, the grid area will be compressed horizontally to display
the complete waveform when the dialog box is displayed. After setting the parameters, to achieve
the best waveform display effect, touch the title bar in the upper right corner to hide the dialog box.
Touch it again to recall the dialog box.
When the menu style is set to Floating, it will directly cover part of the grid area when displayed. If
you want to observe the covered area, touch the title bar in the upper right corner to hide the dialog
box. Touch it again to recall the dialog box.
The dialog box can be set to be hidden automatically. When the instrument is not operated beyond
the set time, the dialog box will be automatically hidden. Follow the steps below:
Display > Menu > Hide Menu .
Menu style = Floating,
and Dialog box is displayed
Dialog box is hidden
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Touch Gestures
Waveforms, cursors, and trigger levels can be adjusted and a rectangular zone can be drawn by
touch gestures in the grid area.
Drag the waveform left and right to move it on
the horizontal axis
Pinch and spread the waveform horizontally
to re-scale the timebase
Drag the waveform up and down to move it
on the vertical axis
Pinch and spread the waveform vertically to
re-scale the vertical gain
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Touch and drag the cursor to move it
Touch and drag the cursor information region
to move the pair of cursors simultaneously
Draw a rectangular box to create a zone or a
histogram region. At the beginning of the
gesture keep the angle close to 45°so it can
be recognized as the drawing box gesture
Mouse and Keyboard Operation
The SDS2000X HD user interface features mouse control as well as a touch screen. If the
oscilloscope is connected to a USB mouse, you can click on the object with the mouse instead of
touching the object. Similarly, if a USB keyboard is connected, you can use the keyboard to input
characters instead of using the virtual keyboard.
Choosing the Language
Follow Utility
＞
Menu
＞
System Setting
＞
Language to choose the language. See the
section "Language" for details.
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8 Front Panel
Overview
The front panel is designed to operate the basic
functions without having to open the software
menu. Most of the front panel controls duplicate
functionality available through the touch screen
display but the operation is more quickly achieved.
All the knobs on the front panel are multi-function. They
can be pushed as well as rotated. Pushing a knob quickly
recalls a specific function, which is indicated by the
silkscreen near the knob.
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Vertical Control
A. When a channel is disabled, push its channel button to turn it on. When a channel is
turned on but not activated, push the button to activate it. When the channel is turned on
and activated, push the button to disable it
B. Press the button to turn on the digital channel and open the DIGITAL dialog box. Press
again to turn off the digital channels
C. Press the button to turn on the math function and open the MATH dialog box. Press
again to turn off the math function
D. Press the button to turn on the reference function and open the REFERENCE dialog
box. Press again to turn off the reference function
E. Analog channels (C1-C4), digital channels (D), math (F1-F2), and references (Ref) share
the same vertical knob. Rotate the knob to adjust the vertical scale (volts/div) of the
activated trace. Push to alternate between coarse and fine adjustments. When the digital
channel is active, rotate the knob to change the selected digital channel
F. Analog channels (C1-C4), digital channels (D), math (F1-F2), and references (Ref) share
the same offset knob. Rotate the knob to adjust the DC offset or vertical position of the
activated trace. Push to set the offset to zero. When the digital channel is active, rotate the
knob to change the position of the selected digital channel
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Horizontal Control
A. Rotate to adjust the horizontal scale (time/div); push
to enable Zoom; push again to switch between the
main window and zoom window.
B. Push to enable Zoom. Push again to exit Zoom mode.
C. Push to enable horizontal Roll; push again to exit Roll
mode. At time-base settings larger than 50 ms/div, it
is recommended to set the oscilloscope to Roll mode
so that the waveform is displayed in real-time
D. Rotate to adjust trigger delay; push to set trigger delay
to zero
Trigger Control
A. Opens the trigger setup dialog box
B. Auto mode: Triggers after a preset period if no valid trigger occurs
C. Single mode: Triggers once when all conditions are met
D. Normal mode: Triggers repeatedly when all conditions are met
E. Trigger level adjustment: Push to set the level to 50% of the waveform
F. Trigger status LED, Ready and Trig'd
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Run/Stop Button
Press the button to switch the acquisition state between Run and
Stop. When the state is Run, the button is illuminated in green. When
the state is Stop, the button is illuminated in red.
Auto Setup Button
Auto Setup forces the oscilloscope to automatically set the vertical
scale, horizontal scale, and trigger level according to the input signal
to get optimum waveform display. An Auto Setup operation can also
be performed by following the steps Acquire > Auto Setup .
Cursors Control
A. Push the button to open the cursors setup dialog box
B. Rotate the knob to move the selected cursor; push to select a
different cursor
Universal Knob
When the parameter setting area is highlighted, the Universal Knob
can be used to adjust the parameter. Press the knob to select an
option from the list. The default function of the Universal Knob is to
adjust the intensity of the waveform traces.
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Other Buttons
Enables/Disables measurements and recalls the MEASURE dialog box.
Performs a quick screenshot save or saves the currently save type file to the
storage path. See the section "Save Button" for details.
Enables/Disables the touch screen. The LED on the button lights to indicate
that the touch screen is working.
Resets the oscilloscope to the default configuration.
Clears the data or displays in multiple sweeps, including display persistence,
measurement statistics, average sweeps, and Pass/Fail statistics.
Recalls the Wave Gen dialog box. The LED on the button lights to indicate
the output of the AWG is enabled.
The preset functions can be called quickly through this button. See the section
"Quick Action" for details
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9 Multiple Approaches to Recall Functions
The oscilloscope can recall functions through different approaches.
Menu Bar
If you are familiar with common computer programs, you may first choose to access a function by
the drop-down menu from the menu bar at the top of the display.
For example, to open the trigger setup dialog box, you can follow the steps below:
Trigger > Menu
The operations can be completed either by touch or by
mouse clicks.
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Descriptor Box
For the setup of channels, math, ref, timebase, and trigger, there are dialog boxes at the bottom of
the display. For the introduction of the descriptor box, see sections "Channel Descriptor Box" and
"Timebase and Trigger Descriptor Box".
For the example above, touch the trigger descriptor box and the
trigger setup dialog box will be activated.
Shortcut Button on the Front panel
Most of the functions of the oscilloscope can be recalled directly by the shortcut buttons on the front
panel. See the chapter "Front Panel" for details.
To open the trigger setup dialog box, press the Setup button
in the trigger control area on the front panel.
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10 Quickly Capture the Signal
This is an example of how to acquire a signal quickly. In this example, we assume the signal is
connected to channel 1 and channel 1 is turned off.
First, press the channel 1 button to turn on channel 1. The LED on the
button lights and the descriptor box of channel 1 is displayed at the
bottom of the screen.
Second, press the Auto Setup button. The oscilloscope will
automatically adjust the vertical scale, horizontal scale, and trigger level
according to the input signal to get an optimum waveform display.
Auto Setup will not work on all signal types, especially time-varying bursts or slow signals (< 100 Hz).
If Auto Setup cannot achieve desired settings, manually adjustment of the vertical, horizontal, and
trigger systems is preferred. See the chapters "Vertical Setup", "Horizontal and Acquisition Setup"
and "Trigger" for details.
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11 Vertical Setup
Turn on/off a Channel
From the Front Panel
When a channel is disabled, push its channel button to turn it on. When a channel is turned on but
not activated, push the button to activate it. When the channel is turned on and activated, push the
button to disable it
From the Touch Screen
Touch the + button and then select the expected channel to turn it on, and its channel descriptor
box and a dialog box will appear on the display. Touch the channel descriptor box and then touch the
Off button to disable it.
Turn on C1 Turn off C1
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Channel Setup
Touch the channel descriptor box, a quick dialog will pop up. Vertical scale and offset can also be set
from this dialog box.
A. Touch the region to set the vertical scale with the
universal knob or virtual keypad
B. ▲ to increase the vertical scale and ▼ to decrease
C. Check to coarsely adjust the vertical scale and
uncheck to enable fine adjustment
D. Touch the region to set the offset with the universal
knob or virtual keypad
E. ▲ to increase the offset and ▼ to decrease
F. Set the offset to zero
G. Copy the setting of the current channel to another
channel
H. Quickly apply the current channel as the source of
a specified operation (Trigger, FFT, Simple
Measure, Cursor, Search, DVM, and Counter)
I. Disable the channel
J. Hide the trace
The vertical scale can be adjusted in coarse or fine mode. Fine mode can reach the full-scale display
as close as possible, which gets the best measurement accuracy in the vertical direction. The
oscilloscope automatically switches to fine mode when the vertical scale is controlled by touch
gestures.
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Activating a channel recalls the channel dialog box, displaying more parameters:
A. Turn channel on/off
B. Coupling (DC, AC, or GND)
C. Bandwidth limit (Full, 200 MHz, or 20 MHz)
D. Probe settings including attenuation (1X, 10X, 100X, or
custom) and probe check.
E. Set the label text. Click to recall the label setting. Users
can customize the text and display of the label
F. Quickly apply a specified operation (Trigger, FFT,
Simple Measure, Cursor, Search, DVM, Histogram,
Mask Test, Counter, and AWG) to the current channel
G. Impedance
H. Units for the channel
I. Deskew
J. Enable/disable invert
K. Trace visible/hidden
Coupling
DC: All of the input signal frequency components are passed to the display.
AC: The signal is capacitively coupled. DC signal components are rejected. See the datasheet
for details of the cut-off frequency.AC coupling is suitable for observing AC signals with DC offset,
such as power ripple.
GND: The channel is grounded by an internal switch. GND coupling is used to observe the zero
offset error of the analog channels or determine the source of noise in the waveform (from signal
or from oscilloscope itself)
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Bandwidth Limit
Full bandwidth passes through signals with high-frequency components, but it also means that noise
with high-frequency components can pass through. When the frequency component of the signal is
very low, better signal-to-noise ratios (SNR) can be obtained by turning on a bandwidth limit. The
SDS2000X HD provides two hardware bandwidth limit options: 20 MHz and 200 MHz.
Probe Settings
The SDS2000X HD provides 1X, 10X, 100X, and custom probe attenuation factor options. The
custom values can be between 10
-6
~10
6
. The oscilloscope will automatically convert the vertical scale
according to the current probe attenuation factor. For example, the vertical scale of the oscilloscope
under 1X attenuation is 100 mV/div, and the vertical scale will be automatically set to 1 V/div if the
probe attenuation is changed to 10X. If a standard probe with a readout terminal is connected, the
oscilloscope will automatically set the probe attenuation to match the probe.
The Probe Check option is provided to quickly check if the probe is correctly compensated. Connect
the probe as in section “Probes” and touch Probe
＞
Probe Check , then operate according to
the prompt.
Label
Users can set the label text for channels. Open the label setting dialog box to select the source,
customize the label text, and set the display. The source can be C1~C4, Math, and RefA~RefD. The
length of the label is limited to 20 characters. The characters beyond this length will not be displayed.
When the “Display” option is set to “on”, the label will be displayed on the right side of the channel
offset indicator.
The labels are hidden The labels are displayed
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Apply to
With this setting, some common functions such as Trigger, FFT, Simple Measure, Cursor, Search,
DVM, Histogram, Mask Test, Counter, and AWG can be quickly applied to the selected channel. Once
a function is specified, it will switch directly to the function menu and automatically set that channel
as the source.
Impedance
1 MΩ: When a passive probe with high impedance is connected, the impedance must be set to
1 MΩ, otherwise the signal will not be detected.
50 Ω: Suitable for high-frequency signals transmitted through 50 Ω coaxial cables or active
probes. This can minimize the amplitude distortion caused by impedance mismatching.
Warning: The 50 Ω input setting is not a high-power input. Damage can occur
if the input exceeds the published specifications. See the datasheet
for more details.
Unit
Voltage unit "V" or current unit "A”. When using the current probe, the unit should be set to "A".
Deskew
Due to the skew between channels, cables, or probes, the delay of signals passing through different
measurement paths may be inconsistent. For example, two coaxial cables with a 1-inch difference in
length could introduce a skew of more than 100 ps. In some scenarios (e.g. measuring the setup/hold
time between clock and data), it may be necessary to compensate for the skew between channels.
The method of compensation: Probe the same signal simultaneously using two channels (including
the cables or probes that you intend to use for measurements) and adjust the deskew parameter of
one channel until the waveforms of the two channels observed on the screen coincide horizontally.
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Before deskew After deskew
Note: When the channel with deskew compensation is the trigger source, the trigger delay indicator
does not change as the deskew value changes.
Invert
When invert is enabled, the waveform is rotated 180 degrees around earth potential (0 Volts).
Before invert After invert
Trace
When the trace is hidden, the channel waveform is no longer displayed on the screen, while the
acquisition is still running in the background.
Trace visible Trace hidden
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12 Digital Channels
Overview
SPL2016 Probe
The SPL2016 is a logic probe designed to monitor up to 16 digital signals at once. The 16 digital
channels are separated into two groups and each group has its threshold, making it possible to
simultaneously view data from different logic families.
Note: To avoid personal injury or damage to the logic probe and any
associated equipment, the following safety precautions should be
noted.
The equipment shall be used only for the purposes specified by the manufacturer. The
SPL2016 probe is used only for SIGLENT's special series of oscilloscopes. Protection mechanisms
can be compromised if the way the devices connected by the SPL2016 are not used for their intended
purpose.
Connect and disconnect correctly. Excessive bending can damage the cable.
Do not use equipment in humid or explosive environments.
Only used indoors. The SPL2016 is designed to be used indoors and should only be operated in a
clean, dry environment.
Do not use the equipment when you suspect a problem. Do not use the SPL2016 if any parts are
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damaged. Maintenance work shall be performed by maintenance personnel with appropriate
qualifications.
Keep product surface clean and dry.
SDS2000HD-16LA Option
The software option adds the following functions to the oscilloscope:
Digital channel acquisition and analysis - Acquire and analyze the signals connected to the
digital logic probe, including waveform display, save, parameter measurement, etc.
Trigger on a digital channel - Trigger with the digital channel as the trigger source, isolating
events of interest.
Decode on a digital channel - Serial protocol decoding of a digital channel requires the
installation of the serial decode option.
Enable/Disable the Digital Channels
Turning on or off the digital channels is similar to analog channels. Digital data can be stored as
waveform files. Horizontal cursors and most horizontal measurements also apply to digital waveforms.
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A. Digital channel waveform display, which shares the same grid area with the analog
channels.
B. Digital channel descriptor box
C. Dialog box
D. Digital channel indicators. Up to 16 digital channels are organized in two groups with
different thresholds: D15~D8 and D7~D0. Every channel can be turned on or off
individually.
E. Labels can be set to data, address, or custom characters.
F. Digital bus
From the Front Panel
Press the Digital button on the front panel to turn on digital channels and display the waveforms.
Press again to turn it off.
From the Touch Screen
Click + at the bottom of the display and select the "Digital" to turn it on. Click the digital channel
descriptor box, and select Off on the pop-up menu to turn it off. Refer to the operation in the
chapter "Vertical Setup" for details.
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Digital Channel Setup
Touch the digital descriptor box, then the quick menu of digital channel settings pops up above the
descriptor box. In the menu height and position of digital channels can be set:
A. Upper position limit of the digital channel display area.
Use the universal knob or virtual keypad to set it.
Decrease the height to provide more adjustment area.
B. ▲ to increase position and ▼ to decrease the channel
location.
C. Reset the position to the default value
D. The range in height of the digital channels display area.
Use the universal knob or virtual keypad to set it. If the
display height covers all of the available divisions,
there will not be room to adjust the position.
E. ▲ to increase and ▼ to decrease the number of
divisions occupied by the digital channels
F. Reset the height to the default value
G. Turn off the digital channels
H. Open the digital dialog box on the right side
Height=8div, Position=0div Height=4div, Position=1div
The quick menu only covers the height range and position of the digital channels display area. More
settings can be found in the dialog box.
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A. Turn on/off the digital channels
B. Labels can be set to data, address, or custom
characters.
C. Logic threshold of D7~D0. The oscilloscope will
automatically set the threshold according to the
specified logic family, or the user can set the
threshold manually using the Custom option.
D. Logic threshold of D15~D8
E. Set the channels to be displayed
F. Deskew setting, the same as setting analog
channels
G. Bus setting
Logic Threshold Setting
The threshold level determines how the input signal is evaluated. The threshold level can be set in
the Logic Setting . The input voltage less than the threshold is recognized as a '0', and the input
voltage greater than the threshold is recognized as a ‘1’.
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The configurable logical level includes TTL, CMOS, LVCMOS 3.3 V,
LVCMOS 2.5 V, and Custom.
The setting range of the custom threshold is -10.0 V to + 10.0 V.
Bus Setting
Press the Digital button on the front panel or touch the Digital descriptor box on the bottom to
open the Digital dialog box, touch Bus to open the Digital Bus dialog box.
A. Select Bus1 or Bus2
B. Set the data format of the digital bus (binary, decimal,
unsigned decimal, and hexadecimal)
C. Set the bit width of the digital bus
D. Set the digital bus data
E. Reset the digital bus data to the default state
F. Enable/disable the display of the digital bus
G. Set the vertical position of the bus
H. Return to the previous menu
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Bus Data Setting
The bus data setting supports setting the digital channel data by bit. Touch Data to open the bus
data setting dialog.
In this dialog, the mapping relationship between the bus bits and the digital channels is shown as
Bit.x[Dy]. For example, Bit.0[D15] means that bit 0 of the bus is D15. Touch Bit.x[Dy] to assign the
digital channel D0-D15 to the specified bit x.
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13 Horizontal and Acquisition Setup
Timebase Setup
The timebase setup is used to adjust the scale and offset of the X (horizontal) axis. This setting applies
to all analog, digital channels, and all math traces except FFT.
Touch the timebase descriptor box and the quick menu of the timebase settings will pop up. In the
menu timebase (horizontal scale), delay and other parameters can be set.
A. Set the horizontal scale (timebase) by the virtual keypad
B. ▲ to increase and ▼ to decrease the horizontal scale
C. Set the trigger delay by the virtual keypad
D. ▲ to increase and ▼ to decrease the trigger delay
E. Set the trigger delay to zero
F. Set the trigger delay to the left part of the screen
G. Set the trigger delay to the right part of the screen
H. Open the Acquire dialog box
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Acquisition Setup
13.2.1 Overview
Touch Acquire Menu on the quick menu of the timebase settings, or touch the menu bar
Acquire > Menu to recall the Acquire dialog box on the right side.
A. Select the interpolation mode
B. Select the Acq mode
C. Select the acquisition mode
(Normal/Peak/Average/ERES). See the section
"Acquisition" for details.
D. Select the Memory Management mode
(Auto, Fixed Sample Rate, and Fixed Memory).
See the section "Memory Management" for details.
E. Select the maximum memory depth
F. Enter the sequence menu. See the section
“Sequence” for details
G. XY mode on/off
Interpolation -- At small timebase settings, the number of original points on the screen may be less
than the number of display pixels in the grid area, so interpolation is necessary to display a continuous
waveform. For example, at 1 ns/div timebase and 2 GSa/s sample rate, the number of original points
is 20, but the grid area includes 1000 horizontal pixels. In this case, the oscilloscope needs to
interpolate the original points by 50.
X: Linear interpolation, the simplest way of interpolation, connects two original points with a
straight line.
Sinc: Sin(x)/x interpolation, the original point is interpolated according to the Nyquist
reconstruction formula, which has a good time-domain recovery effect for a sine wave. But for
step signals/fast rise times, it will introduce false overshoot due to the Gibbs phenomenon.
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X Interpolation Sinc Interpolation
Acq Mode: "Fast" is the default setting. The SDS2000X HD provides a very high waveform update
rate in fast mode. "Slow" mode will slow down the waveform update on purpose.
Memory Depth: The memory depth that can be supported. According to the formula "acquisition time
= sample points x sample interval", setting a larger memory depth can achieve a higher sample rate
for a given time base, but more samples require more processing time, degrading the waveform
update rate. SDS2000X HD can obtain the best waveform refresh rate with the Memory Depth of 1
kpts. Under the full Memory Depth, SDS2000X HD can still operate at full speed sampling at
timebases < 10 ms/div which provides high resolution captures for long time duration events.
The memory depth supported by the SDS2000X HD is listed in the following table:
Single Channel Mode Dual-Channel Mode
20 k 10 k
200 k 100 k
2 M 1 M
20 M 10 M
200 M 100 M
Single-channel mode: Only one of C1/C2/C3/C4 is turned on.
Dual-channel mode: One of C1&C2 or C3&C4 are turned on.
XY Mode: A frame of data input by C1 is used as the x-axis, and a frame of data input by C2 is used
as the y-axis to display the relationship between the two signals. XY mode is usually used to draw a
Lissajous diagram or volt-ampere diagram of components.
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13.2.2 Acquisition
The acquisition mode is used to determine how to acquire and process the signal.
Normal: The oscilloscope samples the signal with equal time intervals. For most waveforms, the best
display effect can be obtained using this mode.
Peak: Peak detect mode. The oscilloscope acquires the maximum and minimum values of the signal
within the sample interval so the peak (maximum-minimum) in the interval is obtained. This mode is
effective to observe occasional narrow pulses or spurs with a low sample rate, but the noise displayed
is larger. In peak mode, the oscilloscope will display all pulses with a pulse width longer than 200 ps.
In the following example, a narrow pulse sequence with a pulse width of 3.4 ns and a period of 200
Hz is sampled at a 4 MSa/s sample rate in normal mode and peak mode. As we can see, because
the sample interval (250 ns) is much larger than the pulse width (3.4 ns), it is difficult to capture the
narrow pulses in normal mode, but peak mode can ensure that each pulse is captured.
Normal mode Peak mode
Average: The oscilloscope accumulates multiple waveform frames and calculates the average as the
result. If a stable trigger is available, the resulting average has a random noise component lower than
that of a single-shot record. The more frames that are accumulated, the lower the noise is. For the
SDS2000X HD, average processing is implemented by the hardware engine, so it can still maintain
a high waveform update rate when the acquisition mode is set to average.
You can reset the accumulated average by pushing the Clear Sweeps button on the front panel.
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Normal mode
Average mode（128）
Note: Average acquisition is only valid for periodic signals, and it is important to ensure that the
waveform is triggering stably when using average mode.
ERES: In this mode, the oscilloscope digitally filters the sampling points, which can reduce the
broadband random noise on the input signal and improve the signal-to-noise ratio, to improve the
effective resolution (ENOB) of the oscilloscope. The ERES processing of SDS2000X HD is realized
by the hardware engine, so it can still maintain a high waveform refresh rate when eres is turned on.
Normal mode ERES (3-bit)
ERES acquisition does not require the signal to be periodic, nor does it require stable triggering, but
due to the digital filtering, the system bandwidth of the oscilloscope will degrade in ERES mode. The
higher the enhanced bits, the lower the bandwidth. The following table shows the relationship between
ERES bits and bandwidth:
Enhanced Bits
-3dB bandwidth
0.5
0.25*Sample rate
1
0.115*Sample rate
1.5
0.055*Sample rate
2
0.028*Sample rate
2.5
0.014*Sample rate
3
0.007*Sample rate
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13.2.3 Memory Management
Memory Management controls how the instrument stores the acquired samples.
Auto: The default acquisition setting. After setting the maximum memory in the Auto mode, the
oscilloscope automatically adjusts the sample rate and memory depth according to the time base.
The adjustment principle is to follow the formula:
Sample rate = number of samples/time of acquisition
Where the time of acquisition is the time corresponding to the full display (i.e. 10 horizontal divisions).
Note: The maximum memory here is the upper limit of the memory space allocated by the
oscilloscope. The actual sample points are related to the current time base and may be less than
memory depth. The actual sample points information can be obtained in the timebase descriptor box
(see the section "Timebase and Trigger" for details).
Fixed Sample Rate: The sample rate is fixed as set, and the oscilloscope automatically adjusts
memory depth according to the time base. The time of acquisition is the time corresponding to the full
display (i.e. 10 horizontal divisions).
Fixed Memory: The memory depth is fixed as set, and the oscilloscope automatically adjusts the
sample rate according to the time base. With a small time scale (such as 1 ns/div) the memory depth
is beyond the time of the full display, so it needs to zoom out the acquired frame for viewing the
complete frame in Stop mode.
Note: In Run status, the scope only processes the data on the display, which means measure, math,
decode, search, etc. analyze only the data on the display. This is identical to the "Auto" memory
management mode.
13.2.4 Roll Mode
Press the Roll button on the front panel to enter roll mode. In this mode, the waveform moves
across the screen from right to left, similar to a strip chart recorder. The horizontal delay control of the
waveform will be disabled when roll mode is active. It only operates at timebase values of 50 ms/div
and above.
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If you would like to stop the display in Roll mode, press the Run/Stop button. To clear the display
and restart an acquisition in Roll mode, press the Run/Stop button again.
Note：Zoom is only supported after Stop in Roll mode.
13.2.5 Sequence
Touch Acquire > Sequence to recall sequence dialog box.
A. Turn on or off sequence
B. Set the segment
Sequence mode is a fast acquisition mode, which divides the memory depth into multiple segments
(up to 80,000), each of which stores a single shot. In sequence mode, the oscilloscope only acquires
and stores data without processing and displaying, until the specified segments are acquired. As a
result, the dead time between trigger events is minimized, thus greatly improving the waveform update
rate. If sequence mode is enabled, the display will not update until all of the sequences have been
acquired. The SDS2000X HD can achieve a minimum 2 us trigger interval in Sequence mode,
corresponding to a waveform update rate of 500,000 wfm/s.
After the acquisition is finished, the oscilloscope will map all the segments together to the screen. If
you need to view and analyze each frame separately, history mode will help (see the section "History"
for details). History mode provides timestamp labels for each segment.
In addition to minimizing the dead time, another advantage of Sequence mode is that it can capture
and record rare events over long periods. The oscilloscope can capture multiple events that satisfy
the trigger conditions, ignoring the periods of no interest between adjacent events, thus maximizing
the use of waveform memory. You can use the full accuracy of the acquisition timebase to measure
selected segments.
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Example:
Input a pulse sequence with a period of 50 ms to C1. The rise time of the pulse is 2 ns, while fall time
is 100 ns; pulse width is 108 ns, and amplitude is 1.6 Vpp. Press the AutoSetup button on the front
panel.
Set the coupling mode of C1 to DC50Ω, and vertical scale to 500 mV/div, vertical offset to 0. Set the
trigger level to 0.
In normal mode, 5 pulses can be obtained on the screen with the sample rate of 1GSa/s at
the maximum memory depth.
Set the trigger mode to "Single", the timebase to 100 ns/div. Turn on the Sequence mode, and set
Sequence N
Stored Waveform
Sequence N+1
Sequence N-1
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the segments to maximum (74403 in this example, up to 80,000 depending on the number of samples
at the current time base). Wait patiently until the acquisition completes, then all the waveforms
satisfying the trigger conditions are displayed on the screen.
In Sequence mode, there is no waveform displayed on the screen until the acquisition is
completed. During acquisition, there is a counter on the screen indicating the number of
segments that have been acquired.
In the example, 74403 pulses can be obtained with the sample rate of 2 GSa/s at the
maximum memory depth.
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History
Touch Analysis > History to recall the history dialog box.
A. Turn on or off history mode
B. Specify the frame index
C. Set the playing mode
D. Play backward, pause, and play forward
E. Turn on or off the list
F. List time type
G. Set the time interval between two
frames when playing automatically
H. Enable the “Stop on Search Event”
function, which allows navigating search
events across history frames.
I. List displays the frame index and time
label for each frame.
The oscilloscope automatically stores acquired frames. It can store up to 80,000 frames but the
number may vary due to the memory depth and timebase settings. Turn on history mode, then the
stored frames can be recalled and measured.
Continue with the example in the section above. In Sequence mode, all waveforms that satisfy the
trigger conditions are mapped to the display. If you need to observe a single frame, you can use
history mode.
To enable history mode, touch the Frame No . area twice, then the virtual numeric keypad pops
up. Input the number "5412" to specify the 5412th segment (frame).
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Observing the 5412th frame captured by Sequence in history mode
Touch the List area, turn on the list, in which the time label corresponding to the 5412th waveform
is displayed. The time resolution is microseconds. Time label types include AcqTime or Delta T ,
AcqTime corresponds to the absolute time of the frame, synchronized with the real-time clock of the
oscilloscope; Delta T is the acquisition time interval between adjacent two frames, it is shown as 50ms
in the following diagram, which is consistent with the period of the actual waveform.
Acq Time label Delta T label
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In addition to manually specifying a frame, history mode supports autoplay:
Press the softkey to replay the waveform from the current frame to the first.
Press the softkey to stop replay.
Press the softkey to replay the waveform from the current frame to the last.
Touch the Interval Time area to control the speed of automatic play. In the process of automatic
play, the list will automatically scroll to the current frame.
Note: When a measurement is enabled in history mode, if the Interval Time is set to small (e.g. in us)
the speed of automatic play may not meet the setting, because measurements may take a longer
time for each frame.
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14 Zoom
The SDS2000X HD supports waveform zoom in the
horizontal and vertical directions. Press down the horizontal
knob or the button on the front panel to turn on the
zoom function.
When the Zoom function is on, the waveform area is divided into upper and lower parts. The area of
about 1/3 height above is the main window, and the area of about 2/3 height below is the zoom
window. Touch a window to activate it. The currently activated window is highlighted by the dashed
line.
The area not covered by the gray background in the main waveform area is the range to be zoomed
in (zoom area). Touch the Zoom Vertical Parameters and Zoom Horizontal Parameters regions shown
in the figure above to recall the quick dialogs for setting the vertical and horizontal parameters of the
zoom window.
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Vertical setting Horizontal setting
When the zoom window is activated, the zoom area can be expanded or compressed by rotating the
horizontal and vertical scale knob. Rotating the horizontal and vertical position knob to move the
position of the region. When the main window is activated, the scale knobs and position knobs are
used to change the scale and delay/offset of the main window. The operations above can also be
performed by different gestures. Below is the example of changing the setting in the horizontal
direction by gestures. The gestures for changing the setting in the vertical direction are similar.
Adjust the horizontal position of the zoom area by dragging left and right in the zoom area of
the main window or waveform in the Zoom window
Adjust the vertical position of the zoom area by dragging up and down in the zoom area of the
main window or waveform in the Zoom window.
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Double click a location in the main window to
quickly set the center of the zoom area.
Adjust the horizontal position of the waveform
by dragging left and right in the gray area of the
main window
Adjust the vertical position of the waveform by
dragging up and down in the gray area of the
main window.
Adjust the horizontal scale of the Zoom window by horizontal pinch and spread in the zoom
area of the main window or the Zoom window
Adjust the vertical scale of the Zoom window by vertical pinch and spread in the zoom area of
the main window or the Zoom window.
Adjust the horizontal/ vertical scale of the main
window by using a pinching or spreading
gesture in the gray area of the main window
Note: Zoom traces (Z1~Z4) can be used as the source of Measurement, Math Mask tests, and
Histogram.
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15 Trigger
Overview
The oscilloscope only acquires waveforms of interest (i.e. the ones that satisfy the trigger condition)
and aligns all trigger events at the trigger position to form a stable waveform display. The trigger is
one of the most important features of an oscilloscope since we can only analyze a signal that we can
trigger reliably and stably.
The trigger position is movable on the display. The following diagram shows the structure of the
acquisition memory. The acquisition memory is divided into pre-trigger and post-trigger buffers and
the boundary between them is the trigger position. Before the trigger event arrives, the oscilloscope
fills the pre-trigger buffer first, and then continuously updates it in FIFO mode until the trigger event
arrives. After the trigger event, the data fills the post-trigger buffer. When the post-trigger buffer is full,
an acquisition is completed.
Below is the definition of the states in the process of filling the acquisition memory:
Arm: The pre-trigger buffer is not full, and the oscilloscope does not respond to any trigger events.
Ready: The pre-trigger buffer is full, and the oscilloscope is waiting for the trigger event.
Trig’d: A trigger event is detected and the oscilloscope starts to fill the post-trigger buffer.
Trigger settings should be based on the features of the input signal. For example, a sine wave with a
repeatable period can be triggered on the rising edge; for capturing hazards in a combinational logic
circuit, the pulse trigger can be set. You need to have some knowledge of the signal-under-test to
quickly capture the desired waveform.
Pre-trigger Buffer
Post-trigger Buffer
Trigger Event
Acquisition Memory
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Trigger Setup
Touch the trigger descriptor box to display the quick menu of trigger settings. The trigger setup dialog
box is displayed on the right side of the screen.
Quick menu
A. Touch the level region and rotate the Level knob on
the front panel to adjust the trigger level; touch the
region again and the virtual keypad will be available
B. ▲ to increase and ▼ to decrease the trigger level
C. Set trigger level to the vertical center of the waveform
automatically
D. Set the trigger mode to "Auto", which is equivalent to
pressing the Auto button on the front panel
E. Set the trigger mode to "Single", which is equivalent
to pressing the Single button on the front panel
F. Set the trigger mode to "Normal", which is equivalent
to pressing the Normal button on the front panel
Trigger setup dialog box:
A. Select trigger type
B. Select the trigger source
C. Select the trigger slope (When the trigger type is "Edge",
"Slope" and other specific types)
D. Set holdoff (None/Time/Events)
E. Set trigger coupling mode (DC/AC/LF Reject/HF Reject)
F. Enable/disable Noise Rejection. When Noise Reject is
on, the trigger hysteresis is increased, so the noise
immunity of the trigger circuit is better. As a compromise,
the trigger sensitivity degrades
G. Set the Zone trigger
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Trigger Related Label
Trigger level Indicator Horizontal 0 position
Indicator
Horizontal 0 position
(out of screen) Indicator
Trigger Level
Both analog and digital triggers must have a correct trigger level value. The oscilloscope judges
whether a waveform satisfies the trigger condition when it crosses the trigger level. If it does, the
crossing time is the trigger position. In the following figure, the trigger condition is set as a rising edge.
When the signal with a positive slope crosses the trigger level, the trigger condition is satisfied and
the time point the signal crosses the level is the trigger position.
In some special triggers, the system will automatically set the trigger level, such as using AC Line as
the trigger source.
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Trigger Mode
The trigger mode determines how the oscilloscope acquires waveforms.
Auto：An internal timer triggers the sweep after a preset timeout period if no trigger has been found
so that the oscilloscope continuously updates the display whether a trigger happens or not. Auto
mode is suitable for unknown signals or DC signals.
Note: In Auto mode, if the signal satisfies the trigger conditions but cannot trigger the oscilloscope
stably, it may be that interval between two trigger events exceeds the timeout period. Try Normal
mode in this case.
Normal：Triggers and acquisitions only occur when the trigger conditions are met. Otherwise, the
oscilloscope holds the last waveform on the display and waits for the next trigger. Normal mode is
suitable for acquiring:
Only events specified by the trigger settings
Rare events
Single： Captures and displays a single frame that satisfies the trigger conditions, and then stops.
The following trigger events are ignored until the Single acquisition is restarted. Single-mode is
suitable for:
One-shot events or periodic signals, such as power-on\off waveforms on a power rail
Rare events
Force：The oscilloscope performs an acquisition regardless of whether the input signal meets the
trigger conditions or not. Press Single twice to perform a force trigger.
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Trigger Type
15.5.1 Overview
The trigger modes of the SDS2000X HD are digital designs. Compared with analog trigger circuits,
digital triggers can not only greatly optimize trigger precision and trigger jitter, but also support multiple
trigger types and complex trigger conditions.
Edge -- Trigger on a rising edge, falling edge or both
Slope -- Trigger when an edge crosses two thresholds that lie inside or outside a
selected time range
Pulse -- Trigger at the end of a pulse when the pulse width lies inside or outside a
selected time range
Video -- TV trigger on falling edge
Window -- Trigger when the signal leaves the widow region.
Interval -- Trigger on the second edge when the time between the edges is inside or
outside a selected time range
Dropout --Trigger when the signal disappears for longer than the Dropout value.
Runt --Trigger when a pulse crosses the 1st threshold but not the 2nd before re-
crossing the 1st threshold again
Pattern -- Trigger when pattern condition transitions from false to true. All inputs set
to DC coupling
Serial --Trigger on specified condition in a serial bus. See the chapter "Serial Trigger
and Decode" for details.
Qualified -- Trigger with edge trigger setting only after the qualifying condition is
satisfied
Nth Edge –Trigger on the Nth edge of a burst that occurs after a specified idle time
Delay --Trigger when the delay time between source A and source B meets the limit
condition
Setup/Hold --Trigger when the setup time or hold time meets the limit condition
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15.5.2 Edge Trigger
Edge trigger distinguishes the trigger points by seeking the specified edge (rising, falling, alternating)
and trigger level. The trigger source and slope can be set in the trigger dialog box.
Touch the Source area to select trigger source, and touch the Slope area to select rising, falling,
or alternating.
Rising -- Only trigger on the rising edge
Falling -- Only trigger on the falling edge
Alternating -- Trigger on both rising edge and falling edge
Holdoff, coupling, and noise reject can be set in edge trigger, see the sections "Holdoff", "Trigger
Coupling" and "Noise Reject" for details.
Note: Press the Auto Setup button, and the oscilloscope will set the trigger type to Edge.
15.5.3 Slope Trigger
The slope trigger looks for a rising or falling transition from one level to another level in the specified
time range. For example, positive slope time is defined as the time difference between the two
crossing points of trigger level lines A and B with the positive edge as shown in the figure below.
Touch the Source area to select trigger source, and touch the Slope area to select rising or
falling.
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Rising -- Only trigger on the positive slope
Falling -- Only trigger on the negative slope
Adjust Upper/Lower Level
The slope trigger requires upper and lower trigger levels.
When the trigger type is slope trigger, touch the trigger
descriptor box, and the pop-up quick menu will show two
levels.
The upper/lower level can be set in the following two
ways:
1. Touch the Level Upper area in the quick menu to select the upper level, and then set the
level value by the virtual keypad or the Level knob on the front panel. To set the lower level
is similar.
2. Use the Level knob on the front panel directly to set the level value. Press the knob to switch
between upper and lower levels, and rotate it to set the value.
The lower level should always be less than or equal to the upper level. In the trigger descriptor box,
the lower level is displayed.
Set Limit Range
Touch the Limit Range area in the trigger dialog box to select the time condition and set the
corresponding time in the Upper Value / Lower Value area.
Less than a time value（≤）-- Trigger when the positive or negative slope time of the input signal is
lower than the specified time value.
Great than a time value（≥）-- Trigger when the positive or negative slope time of the input signal
is greater than the specified time value.
Within a range of time values （
[--,--]）-- Trigger when the positive or negative slope time of the
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input signal is greater than the specified lower limit of time and lower than the specified upper limit of
time value.
Outside a range of time value（
--][--）-- Trigger when the positive or negative slope time of the input
signal is greater than the specified upper limit of time and lower than the specified lower limit of time
value.
Holdoff, coupling, and noise reject can be set in slope trigger, see the sections "Holdoff", "Trigger
Coupling" and "Noise Reject" for details.
15.5.4 Pulse Trigger
Trigger on a positive or negative pulse with a specified width. Trigger source, polarity (positive,
negative), limit range, and time value can be set in the trigger dialog box.
Less than a time value（
≤）-- Trigger when the positive or negative pulse time of the input signal is
lower than the specified time value. Below is an example of a trigger condition set to a positive pulse
width < 100ns
Great than a time value（
≥）-- Trigger when the positive or negative pulse time of the input signal
is greater than the specified time value. Below is an example of a trigger condition set to a positive
pulse width > 100ns
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Within a range of time values （[--,--]）-- Trigger when the positive or negative pulse time of the
input signal is greater than the specified lower limit of time and lower than the specified upper limit of
the time value. Below is an example of a trigger condition set to 100 ns ＜ positive pulse width ＜
300 ns.
Outside a range of time value（
--][--）-- trigger when the positive or negative pulse time of the input
signal is greater than the specified upper limit of time and lower than the specified lower limit of the
time value.
Holdoff, coupling, and noise reject can be set in pulse trigger, see the sections "Holdoff", "Trigger
Coupling" and "Noise Reject" for details.
15.5.5 Video Trigger
Video trigger can be used to capture the complicated waveforms of most standard analog video
signals. The trigger circuitry detects the vertical and horizontal interval of the waveform and produces
a trigger based on the video trigger settings you have selected. The SDS2000X HD supports standard
video signals for NTSC (National Television Standards Committee), PAL (Phase Alternating Line),
HDTV (High Definition Television), and a custom video signal trigger.
Source, standard, and synchronization mode can be set in the video trigger dialog box. When the
synchronization mode is "Select", line and field can be specified.
Touch the Standard and select the video standard. The SDS2000X HD supports the following
video standards:
TV Standard
Scan Type
Sync Pulse
NTSC Interlaced Bi-level
PAL Interlaced Bi-level
HDTV 720P/50 Progressive Tri-level
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HDTV 720P/60 Progressive Tri-level
HDTV 1080P/50 Progressive Tri-level
HDTV 1080P/60 Progressive Tri-level
HDTV 1080i/50 Interlaced Tri-level
HDTV 1080i/60 Interlaced Tri-level
Custom
The table below shows the parameters of the custom video trigger:
Frame Rate 25Hz, 30 Hz, 50 Hz,60 Hz
Of Lines 300 ~ 2000
Of Fields 1,2,4,8
Interlace 1:1, 2:1,4:1,8:1
Trigger Position Line Field
(line value)/1(1:1) 1
(line value)/2 (2:1) 1,2, 3, 4,5,6,7,8
(line value)/4(4:1) 1,2, 3, 4,5,6,7,8
(line value)/8(8:1) 1,2, 3, 4,5,6,7,8
Line value: The number of lines set in the Of Lines (300 ~ 2000).
In the custom video trigger type, the corresponding "Of Fields" varies with the selection of the
“Interlace” ratio. Therefore, the number of fields selected and the number of lines corresponding to
each field can also be varied. If the "Of Lines" is set to 800, the correct relationship between them is
as follows:
Of Lines
Interlace
Of Fields
Trigger Line
Trigger Field
800 1:1 1 800 1
800 2:1 1/2/4/8 400 1/1~2/1~4/1~8
800 4:1 1/2/4/8 200 1/1~2/1~4/1~8
800 8:1 1/2/4/8 100 1/1~2/1~4/1~8
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Set the video trigger for a video signal
Touch Sync for trigger mode selection, video trigger mode has "Any" and "Select" options. In "Any"
mode, the video signal can be triggered on any line that meets the conditions. In the "Select" mode,
the signal can be triggered by a specified field and a specified line.
For progressive scanning signals (e.g. 720p/50, 720p/60, 1080p/50, 1080p/60), only the specified line
can be selected to trigger when the synchronization mode is “Select”.
For interlaced scanning signals (such as NTSC, PAL, 1080i/50, 1080i/60, Custom), when the
synchronization mode is "Select", the specified line and the specified field can be selected to trigger.
The following table shows the corresponding relations between line and field for all video standards
(except for Custom)
Standard
Field 1
Field 2
NTSC 1 to 263 1 to 262
PAL 1 to 313 1 to 312
HDTV 720P/50、720P/60
1 to 750
HDTV 1080P/50、1080P/60
1 to 1125
HDTV 1080i/50、1080i/60
1 to 563 1 to 562
To gain familiarization with the video trigger, try these two examples:
Trigger on a specific line of video (NTSC standard)
Use “Custom” to trigger video signals
Trigger on a Specific Line of Video
Video trigger requires that any analog channel can be used as the trigger source with a
synchronization amplitude greater than 1/2 grid. The example below sets to trigger on Field 1, Line
22 using the NTSC video standard.
1. Press the Setup button on the front panel to open the trigger menu.
2. In the trigger menu, touch Type , and select "Video".
3. Touch the Source and select CH1 as the trigger source.
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4. Touch the Standard and select the "NTSC".
5. Touch the Sync and select the "Select" to make the Field and Line optional, then select
"1" in the "Field", and set the "Line" to "22" by using the universal knob or the virtual keypad.
Trigger on a Specific Line of Video (NTSC)
Use "Custom" to Trigger Video Signals
Custom video trigger supports video signals with frame rates of 25, 30, 50, and 60 Hz respectively,
and the specified row is within the range of 300 to 2000. The following describes how to trigger a
"Custom" video signal.
1. Press the Setup button on the front panel to open the trigger menu.
2. In the trigger menu, touch the Type , and select the "Video".
3. Touch the Source and select CH1 as the trigger source.
4. Touch the Standard and select the "Custom".
5. Touch the Custom Setting to open the custom setting menu, and touch the Interlace to
select the required interlace ratio (assuming that the interlace ratio is 8:1). Then set the frame
rate, select the number of lines and the number of fields.
6. Touch the Sync to select the synchronization mode for the input signal:
a) Select the "Any" mode, and the signal can be triggered on any line that meets the trigger
condition.
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b) Select the "Select" mode, then set the specified line and the specified field to trigger
the signal. Assuming that the "Field" is set to 8, you can select any field from 1 to 8,
and each field can choose any line from 1 to 100.
15.5.6 Window Trigger
The window trigger is similar to the edge trigger, except that it provides an upper and a lower trigger
level. The instrument triggers when the input signal passes through the upper level or the lower level.
There are two kinds of window types: Absolute and Relative. They have different trigger level
adjustment methods. Under the Absolute window type, the lower and the upper trigger levels can be
adjusted separately. The relative window provides adjustment for the Center value to set the window
center and the Delta value to set the window range. In this mode, the lower and the upper trigger
levels always move together.
If the lower and the upper trigger levels are both within the waveform amplitude range, the
oscilloscope will trigger on both rising and falling edges.
If the upper trigger level is within the waveform amplitude range while the lower trigger level
is out of the waveform amplitude range, the oscilloscope will trigger on the rising edge only.
If the lower trigger level is within the waveform amplitude range while the upper trigger level
is out of the waveform amplitude range, the oscilloscope will trigger on the falling edge only.
To set window trigger via the Absolute window type
Refer to "Adjust Upper/Lower Level" in the section "Slope Trigger".
To set window trigger via the Relative window type
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When the window trigger type is set to "Relative", touch
the trigger descriptor box. The pop-up menu will show
two user-defined parameters: “Level +/-Delta" and
"Level Center".
The above two parameters can be set in the following
two ways:
1. Select the parameter in the Level +/-Delta area of the quick menu, then set the
parameter value by the virtual keypad or the Level knob on the front panel. To set the center
level is similar.
2. Directly use the Level knob on the front panel. Press the knob to switch between “Level +/-
Delta" and "Level Center", and rotate it to set values.
Note: “Level +/-Delta” represents half of the actual window area. For example, when the value is
200mV, it represents a range of ±200 mV, which is a 400mV window.
Holdoff, coupling, and noise reject can be set in window trigger, see the sections "Holdoff", "Trigger
Coupling" and "Noise Reject" for details.
15.5.7 Interval Trigger
Trigger when the time difference between the neighboring rising or falling edges meets the time limit
condition.
When the trigger condition is set as an interval between two neighboring rising edges and it is less
than the set time value, the trigger diagram is as follows:
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Trigger source, slope (rising, falling), limit range, and time value can be set in the trigger dialog box.
Holdoff, coupling, and noise reject can be set in interval trigger, see the sections "Holdoff", "Trigger
Coupling" and "Noise Reject" for details.
15.5.8 Dropout Trigger
Dropout trigger includes two types: Edge and State.
Edge
Trigger when the time interval (△T) from when the rising edge (or falling edge) of the input signal
passes through the trigger level to when the neighboring rising edge (or falling edge) passes through
the trigger level is greater than the set time, as shown in the figure below:
State
Trigger when the time interval (△T) from when the rising edge (or falling edge) of the input signal
passes through the trigger level to when the neighboring falling edge (or rising edge) passes through
the trigger level is greater than the set time, as shown in the figure below:
Trigger source, slope (rising, falling), dropout type, and time value can be set in the trigger dialog box.
Holdoff, coupling, and noise reject can be set in the dropout trigger, see the sections "Holdoff",
"Trigger Coupling" and "Noise Reject" for details.
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15.5.9 Runt Trigger
Runt trigger looks for pulses that cross one threshold but not another as shown in the figure below:
A positive runt pulse across through the low level but not the high level.
A negative runt pulse across through the high level but not the low level.
Holdoff, coupling, and noise reject can be set in the runt trigger, see the sections "Holdoff", "Trigger
Coupling" and "Noise Reject" for details.
15.5.10 Pattern Trigger
The Pattern trigger identifies a trigger condition by looking for a specified pattern. The SDS2000X HD
provides 4 patterns: logical AND, OR, NAND and NOR combination of the channels. Each channel
can be set to "Low", "High" or "Don't Care". If all channels are set to "Don’t Care", the oscilloscope
will not trigger. The result after the logical operation is triggered from true to false, that is, triggers on
the falling edge of the combined waveform.
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Logic (AND, OR, NAND, NOR), source, limit range, and time value can be set in the trigger dialog
box.
Source Setting
Touch the Source Setting area to recall the following dialog box and set up for each channel
separately. Each channel can be set to "Low", "High" or "Don't Care". The threshold can be
determined by setting the Level Value .
When digital channels are turned on, the logic state of the digital channel can also be set in the source
setting dialog box.
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The logical setting of analog channels The logical setting of digital channels
Limit Range
This setting is particularly useful to filter the hazard signals of combinational logic.
Holdoff can be set in pattern trigger, see the section "Holdoff" for details.
15.5.11 Qualified Trigger
The qualified trigger is an edge trigger after a user-defined qualified condition is satisfied. So a
qualified trigger has two sources; one is the source of the edge trigger, and the other is the qualified
source.
The qualified types include “State”, “State with Delay”, “Edge”, and “Edge with Delay”. When the type
is “State”, the oscilloscope triggers on the first edge when the qualified source is in the specified state
(High or Low). When the type is “State with Delay”, a time limit condition is also available.
Qualified
Source
Edge
Trigger
Source
Trigger
Position
Qualified State = High
Edge = Rising
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When the type is “Edge”, the oscilloscope triggers at the first edge after the specified edge (Rising or
Falling) of the qualified source; when the type is “Edge with Delay”, a time limit condition is available.
Qualified
Source
Edge
Trigger
Source
Trigger
Position
Qualified Edge = Rising
Edge = Rising
Touch the Qualified Setting region to set the qualified source and threshold;
Touch the Edge Setting region to set the edge trigger source, threshold, and slope.
15.5.12 Nth Edge Trigger
Nth edge trigger is similar to an edge trigger with conditions. The trigger is satisfied after meeting the
user-defined idle time and edge number conditions. As shown in the figure below, when the idle time
between the pulse trains is greater than the specified idle time, it is triggered on the third falling edge
of the pulse train.
Trigger source, slope (rising, falling), idle time, and edge number can be set in the trigger dialog box.
Holdoff, coupling, and noise reject can be set in the Nth edge trigger, see the sections "Holdoff",
"Trigger Coupling" and "Noise Reject" for details.
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15.5.13 Delay Trigger
A delay trigger is true when the edge of source B occurs after meeting the set conditions of source A
and a user-defined delay time. The setting of source A is similar to that of the pattern trigger and can
be used for logical "and" combination of multiple channels.
Touch the SourceB Setting region to set the edge trigger source, threshold, and slope.
Touch the Limit Range and Upper/Lower Value region to set the delay time condition.
15.5.14 Setup/Hold Trigger
Clock source and data source need to be set in the setup/hold trigger setting. The set-up time starts
when the data signal crosses the trigger level and ends when the specified clock edge arrives. The
holding time starts when the specified clock edge arrives and ends when the data signal crosses the
trigger level again (as shown in the figure below). When the set-up time or hold time meets the preset
time limit conditions, the oscilloscope will trigger.
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Touch the CLK Setting region to set the clock source, threshold, and slope;
Touch the Data Setting region to set the data source, threshold, and state.
15.5.15 Serial Trigger
Refer to chapter "Serial Trigger and Decode" for detailed information.
Trigger Source
The trigger sources supported by each trigger type are different. See the table below for details:
Trigger Type C1~C4 EXT, EXT/5 AC Line D0~D15
Edge √ √ √ √
Slope √ × × ×
Pulse √ × × √
Video √ × × ×
Window √ × × ×
Interval √ × × √
Dropout √ × × √
Runt √ × × ×
Pattern √ × × √
Serial √ × × √
Qualified √ × × √
Nth Edge √ × × √
Delay √ × × √
Setup/Hold √ × × √
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Holdoff
Holdoff is an additional condition for triggers and can be used to stabilize the triggering of complex
waveforms (such as a pulse series). It can be set to a time or number of events.
Holdoff by Time
Holdoff time is the amount of time that the oscilloscope waits before re-arming the trigger circuitry.
The oscilloscope will not trigger until the holdoff time expires.
Use the holdoff to trigger on repetitive waveforms that have multiple edges (or other events) between
waveform repetitions. You can also use holdoff to trigger on the first edge of a burst when you know
the minimum time between bursts.
For example, to achieve a stable trigger on the repetitive pulses shown in the figure below set the
holdoff time (t) to 200ns<t<600ns.
Holdoff by Event
The Holdoff event sets the number of events that the oscilloscope counts before re-arming the trigger
circuitry. The oscilloscope will not trigger until the counter that tracks holdoff events reaches the set
value. In the following figure, the holdoff event is set to 3, and the signal is triggered on the fourth
edge.
Parameter Start Holdoff On defines the initial position of holdoff.
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Acq Start-- The initial position of holdoff is the first time point satisfying the trigger condition. In the
example above, each holdoff starts from the first rising edge of the pulse sequence.
Last Trig Time--The initial position of holdoff is the time of the last trigger. In the example above, the
last trigger position is at the second rising edge of the pulse sequence and the second holdoff starts
from that point.
Trigger Coupling
The coupling setting of a trigger is only valid when the trigger source is C1~C4, EXT, or EXT/5.
DC: All of the signal’s frequency components are coupled to the trigger circuit for high-frequency
bursts or where the use of AC coupling would shift the effective trigger level.
AC: The signal is capacitively coupled. DC levels are rejected. See the datasheet for details of
the cut-off frequency.
HFR: Signals are DC coupled to the trigger circuit and a low-pass filter network attenuates high
frequencies (used for triggering on low frequencies). See the datasheet for details of the cut-
off frequency.
LFR: The signal is coupled through a capacitive high-pass filter network, DC is rejected and low
frequencies are attenuated. For stable triggering on medium to high-frequency signals. See the
datasheet for details of the cut-off frequency.
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Noise Reject
Noise Reject adds additional hysteresis to the trigger circuitry. By increasing the trigger hysteresis,
the noise immunity becomes better but the trigger sensitivity degrades.
Noise Reject = Off
Noise Reject = On
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Zone Trigger
The SDS2000X HD includes a zone trigger to help isolate elusive glitches. There are two user-defined
areas: Zone1 and Zone2. Users can set the property of each zone as “intersect” or “not intersect” as
an additional condition to further isolate the interesting event quickly. “Intersect” only includes events
that occur within the zone. “Not-intersect” events include all events that occur outside of the zone.
Touch Trigger > Zone to recall zone dialog box:
A. Turn on or off zone trigger
B. Select the source: C1~C4
C. Turn on or off zone1
D. Set the property of zone1: Intersect or Not intersect
E. Set the coordinate of zone1. The range is within the
waveform area
F. Turn on or off zone2
G. Set the property of zone2: Intersect or Not intersect
H. Set the coordinate of zone2. The range is within the
waveform area
The zones can be created and moved by gestures or by setting Zone > Zone Setting in the
dialog box. The color of the zone’s outline is consistent with the color of the specified source (Channel
1 = Yellow, etc...).
Gesture
When the zone trigger is turned on, touch-and-hold on any position within the waveform area and
draw a rectangular box, as shown in the following figure:
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When the finger moves out of the screen, a menu pops up for selecting the zone and setting the zone
properties:
Once a zone is created, it can be moved by dragging. Just touch and hold the zone box and use a
dragging gesture.
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Select C1 as the source, turn on zone1,
and set the property as "Intersect"
Select C1 as the source, turn on zone1,
and set the property as "Not Intersect"
Dialog Box
Touch Zone > Zone Setting to recall the dialog box.
A. Set the left border of the zone
B. Set the right border of the zone
C. Set the top border of the zone
D. Set the bottom border of the zone
E. Return to the previous menu
Touch the regions above to set the value by the universal knob
or the virtual keypad.
Note: If zone1 and zone2 are both turned on, the result of the "AND" operation in two zones becomes
the qualified condition of triggering.
Below is an example in which we want to capture a waveform of bus contention using the SDS2000X
HD:
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With a simple edge trigger, it is unlikely to trigger consistently on this anomaly. Thanks to the high
waveform update rate of the SDS2000X HD, we can confirm there is bus contention happening by
enabling the persistence display, as shown in the figure below:
In this case zone trigger is a quick and simple way to capture the waveform. Enable the zone trigger,
and draw a box to intersect with the bus contention part, as shown in the figure below:
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Now, we can accurately capture the exact bus contention waveform:
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16 Serial Trigger and Decode
Overview
The SDS2000X HD supports serial bus trigger and decoding on the following serial bus protocols:
I2C, SPI, UART, CAN, LIN, FlexRay, CAN FD, I2S, MIL-STD-1553B, SENT, and Manchester.
Press the Setup button on the front panel or touch the trigger descriptor box, and then select the
Type as Serial in the trigger dialog box to set the serial trigger:
A. Select the type as Serial
B. Select the serial bus protocol
C. Set the signal, including the mapping relation
between channels and bus signals, and the
thresholds
D. Trigger setting
Touch the Analysis > Decode to turn on the serial decode dialog box:
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A. Set the list of decode result
B. Select the bus to set, Bus1 and Bus2
C. Turn on/off the bus
D. Set the bus display
E. Select the serial bus protocol
F. Touch to set the signal, including the mapping
relation between channels and bus signals, and
the thresholds. This is similar to the signal setting
of a serial trigger.
G. Configure the bus protocol
H. Synchronize the settings between a serial trigger
and decode
Below are detailed descriptions of the trigger and decode steps for each protocol.
I2C Trigger and Serial Decode
SPI Trigger and Serial Decode
UART Trigger and Serial Decode
CAN Trigger and Serial Decode
LIN Trigger and Serial Decode
FlexRay Trigger and Serial Decode
CAN FD Trigger and Serial Decode
I2S Trigger and Serial Decode
MIL-STD-1553B Trigger and Serial Decode
SENT Trigger and Serial Decode
Manchester Serial Decode
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I2C Trigger and Serial Decode
This section covers triggering and decoding I2C signals. Please read the following for more details:
"I2C Signal Settings", "I2C Trigger" and "I2C Serial Decode".
16.2.1 I2C Signal Settings
Connect the serial data signal (SDA) and the serial clock signal (SCL) to the oscilloscope, set the
mapping relation between channels and signals, and then set the threshold level of each signal. The
signal settings of decode and trigger are independent. If you want to synchronize the settings between
decode and trigger, please perform Protocol Copy in the decode dialog box.
A. Set the source of SCL. In the example above, SCL is connected to C4.
B. Set the threshold level of SCL. It is 1.7V for the LVTTL signal in this example.
C. Set the source of SDA. In the example above, SDA is connected to C1.
D. Set the threshold level of the SDA channel.
E. Return to the previous menu.
F. Threshold level line. It only appears when adjusting the threshold level.
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Copy Setting
Touch the Protocol
Copy in the decode dialog box to
synchronize the settings between the trigger and decode.
A. Copy the decode settings to trigger
B. Copy the trigger settings to decode
C. Return to the previous menu.
Note: The synchronization is not automatic. If the settings at one place change, a copy operation is
necessary to re-synchronize.
16.2.2 I2C Trigger
When the protocol is set to I2C, the following trigger conditions can be set: Start, Stop, Restart, No
Ack, EEPROM, or an R/W frame with a specific device address and data value.
Touch Trigger Setting in the I2C trigger
dialog box to select the trigger condition:
Start — The oscilloscope will be triggered when the SDA line transitions from high to low while the
SCL is high.
Stop — The oscilloscope will be triggered when the SDA line transitions from low to high while the
SCL is high.
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Restart — The oscilloscope will be triggered when another “Start” occurs before a “Stop".
No Ack — The oscilloscope will be triggered when the SDA line is high during any SCL’s ACK bit.
EEPROM — The trigger searches for EEPROM control
byte value 1010xxx on the SDA bus. And there is a Read
bit and an ACK bit behind EEPROM. Set the data value and
compare type according to Data1 and Limit Range .
If EEPROM’s data is greater than (less than, equal to)
Data1 , the oscilloscope will be triggered at the edge of
the ACK bit behind the Data byte. The Data byte doesn’t
need to follow the EEPROM.
7 Address & Data — the oscilloscope will be triggered on the read or write frame in 7-bit address
mode.
Frame (Start: 7-bit address: R/W: Ack) — Data1 and Data2 are set to “0xXX”. If all bits match, then
trigger on the Ack bit followed by the R/W bit.
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Frame (Start: 7-bit address: R/W: Ack: Data: Ack: Data2)—If all bits match, then trigger on the Ack bit
followed by the Data2.
10 Address & Data — If all bits match, then trigger on the Ack bit followed by the Data.
Frame (Start: Address 1st byte: R/W: Ack: Address 2nd byte: Ack: Data)
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If you set the trigger condition to 7 address & data or 10
address & data:
Address can be selected in the hexadecimal range of
0x00 to 0x7F (7-bit) or 0x3FF (10-bit). If the address is
selected as "0xXX (7-bit address)" or "0xXXX (10-bit
address)", the address is ignored. It will always trigger
on the Ack bit followed by the address.
Data1 and Data2 can be selected in the
hexadecimal range of 0x00 to 0xFF. If the data is
selected as "0xXX", the data is ignored. It will always
trigger on the Ack bit followed by the address.
R/W Bit can be specified as Write, Read, or Don't
Care.
Data Length — The data length range is 1 to 12 bytes. When the SDA data length is equal to the
value of Date Length and address length is the same as the set value, the oscilloscope will be
triggered.
Touch the Address Length to select "7-bits" or "10-bits" to match the address of the input
signal.
Touch the Data Length and turn the universal knob or virtual keypad to set the data length to
match the data length of the input signal.
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16.2.3 I2C Serial Decode
The layout of the touch screen display when I2C decode is enabled is as follows:
A. The waveform display area shows the original waveforms of the bus signals
B. The bus display shows the decoding result of the bus. At most two buses can be decoded
at the same time. Touch Bus Operation of the dialog box to turn on or off the selected
bus, and touch Bus Display to select the display type of decode result (Binary, Decimal,
Hex, or ASCII) and set the bus location on the display
C. List display area. The decode result of multiple frames can be displayed in the list, in which
each row shows the time label and decode result of a frame. Touch Result List to set the
parameters of the list.
D. Decode dialog box
Bus
The address value is displayed at the beginning of a frame. The write address is displayed
in green and the read address in yellow.
W/R bit is represented by (W) and (R), followed by the address value.
The after a data or address byte represents ACK (acknowledgment), and
indicates no acknowledgment.
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The data value is displayed in white.
A red point at the end of a segment indicates there is not enough space on the display to
show the complete content of a frame, and some content is hidden, such as .
List
TIME — The horizontal offset of the current data frame head relative to the trigger position.
Address — Address value. For example, "0x2AB" means that address = 2AB with
acknowledgement.
R/W — Read address or write address.
DATA — Data bytes.
Configuration
There is only one item Include R/W Bit in the configuration of the I2C decode. When it is disabled,
the address is represented separately from the R/W bit, and when it is enabled, the R/W bit is
represented together with the address.
For example, the address 0x4E: Write: Ack, is displayed as "0x4E (W)" when the R/W bit is not
included and is displayed as "0x9C" when the R/W bit is included.
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SPI Trigger and Serial Decode
This section covers triggering and decoding SPI signals. Please read the following for more details:
"SPI Signal Settings", "SPI Trigger" and "SPI Serial Decode".
16.3.1 SPI Signal Settings
Connect the CLK, MOSI, MISO, and CS signals to the oscilloscope and set the mapping relation
between channels and signals. Then set the threshold level of each signal. The process of specifying
the source and threshold is similar to "I2C Signal Settings".
CLK
In addition to specifying the source and the threshold level, for the CLK signal, it is also necessary to
specify the Edge Select .
Rising–Data latched on the rising edge of the clock.
Falling–Data latched on the falling edge of the clock.
The user can select the edge according to the actual phase relationship between the clock and the
data of the SPI bus. Referring to the following figure, when the falling edge of the clock is aligned with
the data, the rising edge is selected to latch the data. When the rising edge of the clock is aligned
with the data, the falling edge is selected to latch the data .
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CS
The CS signal should be set to correct CS Type , including CS, ~CS, and Clock Timeout.
CS – Active high. The CS signal needs a complete rising edge in the screen to be regarded as
active.
~CS – Active low. The ~CS signal needs a complete falling edge in the screen to be regarded as
active.
Clock Timeout – It is not necessary to specify the source and the threshold level for the CS signal.
The only parameter for the CS signal is the timeout Limit, which is the minimum time that the
clock signal must be held idle before the oscilloscope acquires valid data. This setting is suitable
for the case where the CS signal is not connected, or the number of oscilloscope channels is
insufficient (such as two-channel oscilloscopes).
The method of copying settings is the same as I2C signal settings. See "I2C Signal Settings" for
details.
Example:
Connect the data, CLK, and ~CS signals of an SPI bus respectively to C1, C2, and C3. Data width =
8-bit, Bit order = MSB, CS polarity = active low, and 12 data bytes are transmitted in one frame.
In the SPI trigger signal menu, set the source and threshold of CLK, MISO, and CS signals, then copy
the trigger settings to decoding. Adjust the timebase, so that there is a falling edge on the CS signal
shown on the screen:
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When the CS type is set to Clock Timeout, turn on Cursor, measure the clock idle time between
frames as 150 us, and measure the interval between clock pulses as 1.28 us, then set the timeout to
a value between 1.28 us and 150 us. In this example it is set to 5 us:
If the data width is set to be greater than 8 bits (such as 16 bits), measure the clock idle time between
8-bit data packets as 11.28 us, and then set the timeout time to a value between 11.28 and 150 us.
In this example, it is set to 20 us:
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16.3.2 SPI Trigger
The trigger condition for the SPI trigger is mainly about data.
Touch Trigger Setting in the dialog box to set data:
A. Trigger Type: MISO or MOSI
B. Set the trigger position type. When set to Any, it will
trigger on the specified data. When set to Value, it
will trigger on the data from the Start Bit
C. Set the start bit of the data value
D. Data Length: 4~96 bits when the start bit is 0
E. Set to trigger on the specified data value. Touch
Data Value twice, and enter the value by the
virtual keypad, or touch All Same to set all bits to
0, 1, or ignored ("X")
F. Set the bit order to MSB or LSB
G. Return to the previous menu
16.3.3 SPI Serial Decode
The configuration of SPI decoding is similar to I2C.
In the Protocol Config menu, Data Length (4-32 bit) and Bit Order (LSB or MSB) are configurable.
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UART Trigger and Serial Decode
This section covers triggering and decoding UART signals. Please read the following for more details:
"UART Signal Settings", "UART Trigger" and "UART Serial Decode".
16.4.1 UART Signal Settings
Connect the RX and TX signals to the oscilloscope, set the mapping relation between channels and
signals, and then set the threshold level of each signal. The process of specifying the source and
threshold is similar to "I2C Signal Settings".
In the Protocol Config menu of trigger or decode, the following parameters are available:
A. Touch to select the baud rate: 600,1200, 2400, 4800,
9600, 19200, 38400, 57600, 115200 b/s or Custom
B. Data Length: 5~8 bit
C. Parity Check: None, Odd, Even, Mark, or Space. If
the data is 9 bits, the 9
th
bit is treated as Mark parity
or Space parity
D. Select the number of stop bits
E. Set the idle level
F. Set the bit order
G. Return to the previous menu
The method of copying settings is the same as I2C signal settings. See "I2C Signal Settings" for
details.
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16.4.2 UART Trigger
Touch Trigger Setting in the dialog box to set the trigger condition:
A. Source Type: RX or TX
B. Trigger Condition: Start, Stop, Data or Error
C. When the "trigger condition" is Data, set the
compare type to =, ＞, ＜
D. When the "trigger condition" is Data, set the data
value
E. Return to the previous menu
Trigger Condition
Start — The oscilloscope triggers when the start bit appears on the RX/TX.
Stop — The oscilloscope triggers when the stop bits appear on the RX/TX. It always triggers on
the first stop bit.
Data — Trigger on data
Touch Compare Type to select "=", ">" or "<".
Touch Value to set the data value by the universal knob or virtual keypad. The range of
data values is 0x00 to 0xff.
Error — The oscilloscope performs a parity check on the data according to the parity type set by
the user, and triggers if the check value is incorrect.
16.4.3 UART Serial Decode
The configuration of UART decoding is similar to that of I2C decoding.
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CAN Trigger and Serial Decode
This section covers triggering and decoding CAN signals. Please read the following for more details:
"CAN Signal Settings", "CAN Trigger" and "CAN Serial Decode".
16.5.1 CAN Signal Settings
Connect the CAN_H and CAN_L signals to the oscilloscope set the mapping relation between
channels and signals, and then set the threshold level of each signal. The process of specifying the
source and threshold is similar to "I2C Signal Settings".
In Protocol Config menu of trigger and decode, baud rate can be set to: 5 kb/s, 10 kb/s, 20 kb/s,
50 kb/s, 100 kb/s, 125 kb/s, 250 kb/s, 500 kb/s, 800 kb/s, 1 Mb/s or Custom.
The method of copying settings is the same as I2C signal settings. See "I2C Signal Settings" for
details.
16.5.2 CAN Trigger
Touch Trigger Setting in the CAN trigger dialog
box to set the trigger condition:
Start —The oscilloscope triggers at the beginning of the frame.
Remote — The oscilloscope triggers on a remote frame with a specified ID. ID, ID Bits (11-bit or
29-bit), and Curr ID Byte (1st, 2nd, 3rd, or 4th byte) can be set. Curr ID Byte is used to specify
the byte to be adjusted when using the universal knob.
ID —The oscilloscope triggers on the data frame that matches the specified ID. ID, ID Bits (11-
bit or 29-bit), and Curr ID Byte (1st, 2nd, 3rd, or 4th byte) can be set.
ID + Data —The oscilloscope triggers on the data frame that matches the specified ID and data.ID,
ID Bits (11-bit or 29-bit), Curr ID Byte (1st, 2nd, 3rd, or 4th byte), Data1, and Data2 can be set.
Error—The oscilloscope triggers on the error frame.
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16.5.3 CAN Serial Decode
The configuration of CAN decoding is similar to that of I2C decoding.
On the bus:
ID is displayed in green.
LEN (data length) is displayed in light yellow.
DATA are displayed in white.
CRC is displayed in blue.
The red point at the end of a segment indicates there is not enough space on the display to
show the complete content of a frame and some content is hidden.
In the list view:
Time — The horizontal offset of the current data frame head relative to the trigger position.
Type — Type of the frame. The Data frame is represented by “D” and the remote frame is
represented by “R”.
ID — ID of the frame, 11-bits or 29-bits ID are automatically detected.
Length — Data length.
Data — Data values.
CRC — Cycle redundancy check.
Ack — Acknowledge bit.
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LIN Trigger and Serial Decode
This section covers triggering and decoding LIN signals. Please read the following for more details:
“LIN Signal Settings”, “LIN Trigger” and “LIN Serial Decode”.
16.6.1 LIN Signal Settings
Connect the LIN signal to the oscilloscope, and then set the threshold level of the signal. The process
of specifying the source and threshold is similar to “I2C Signal Settings”.
In Protocol Config menu of trigger and decode, baud rate can be set to: 600 b/s,1200 b/s, 2400
b/s, 4800 b/s, 9600 b/s, 19200 b/s or Custom.
The method of copying settings is the same as I2C signal settings. See “I2C Signal Settings” for
details.
16.6.2 LIN Trigger
Touch Trigger Setting in the LIN trigger
dialog box to set the trigger conditions:
Break —The oscilloscope triggers at the beginning of the frame.
ID —The oscilloscope triggers on the frame that matches the specified ID, which ranges from
0x00 to 0x3f.
ID & Data—The oscilloscope triggers on the frame that matches the specified ID and data.ID,
Data1, and Data2 can be set.
Data Error —The oscilloscope will trigger when a data error happens.
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16.6.3 LIN Serial Decode
The configuration of LIN decoding is similar to that of I2C decoding.
On the bus:
ID is displayed in green
LEN (data length) and CHK are displayed in blue
DATA are displayed in white.
In the list view:
Time — The horizontal offset of the current data frame head relative to the trigger position.
ID — ID of the frame.
Data length — Data length.
ID Parity — ID parity check.
Data — Data values.
Checksum — Data checksum.
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FlexRay Trigger and Serial Decode
This section covers triggering and decoding FlexRay signals. Please read the following for more
details: "FlexRay Signal Settings", "FlexRay Trigger" and "FlexRay Serial Decode".
16.7.1 FlexRay Signal Settings
Connect the FlexRay signal to the oscilloscope, and then set the threshold level of the signal. The
process of specifying the source and threshold is similar to "I2C Signal Settings".
In the Protocol Config menu of the trigger and decode, the baud rate can be set to: 2.5 Mb/s, 5.0
Mb/s, 10.0 Mb/s, or Custom.
The method of copying settings is the same as I2C signal settings. See "I2C Signal Settings" for
details.
16.7.2 FlexRay Trigger
Touch Trigger Setting in the FlexRay trigger
dialog box to set the trigger conditions：
TSS— The oscilloscope triggers on the transmission start sequence.
Frame— The oscilloscope triggers on the frame.
Set Frame header indicators: Payload preamble indicator, null frame indicator, sync frame
indicator, startup frame indicator.
Touch ID to set the frame ID by the universal knob or virtual keypad. The range of ID is
0x000 to 0x7ff.
Touch Compare Type to select "=", ">" or "<". When setting the Compare Type as "=",
the repetition factor is also required.
Touch Cycle to set the cycle count by the universal knob or virtual keypad. The range of
data values is 0 to 63.
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Symbol— The oscilloscope triggers on CAS/MTS (Conflict Avoidance Symbol/ Media access
Test Symbol) or WUS (Wake-up Symbol)
Errors— The oscilloscope will trigger when a data error happens, including errors on FSS, BSS,
FES, Header CRC, and Frame CRC.
16.7.3 FlexRay Serial Decode
The configuration of FlexRay decoding is similar to that of I2C decoding.
On the bus:
The signatures (CAS/MTS, WUP) are displayed in yellow-green.
TSS transmission start sequence, displayed in yellow-green. The null frame indicator, the
Sync frame indicator, and the Startup frame indicator are displayed in the frame and
displayed in pink.
The ID is displayed in the frame and is displayed in green.
PL (Valid Data Length) is displayed in frames, in words, in light yellow.
HCRC (Head Check Code) is displayed in the frame and displayed in blue.
CYC (cycle) is displayed in the frame and displayed in light yellow.
D (data) is displayed in the frame and displayed in white.
FCRC (Data Check Code) is displayed in the frame and displayed in blue.
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In the list view:
Time— The horizontal offset of the current data frame head relative to the trigger position.
FID— Frame ID, the symbol occupies a single line of the list.
PL— Valid Data Length
HCRC— Head Check Code
CYC— Cycle count
Data— Data values
FCRC— Data Check Code
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CAN FD Trigger and Serial Decode
This section covers triggering and decoding CAN FD signals. Please read the following for more
details: "CAN FD Signal Settings", "CAN FD Trigger" and "CAN FD Serial Decode".
16.8.1 CAN FD Signal Settings
Connect the CAN FD signal to the oscilloscope, and then set the threshold level of the signal. The
process of specifying the source and threshold is similar to "I2C Signal Settings".
In Protocol Config menu of trigger and decode, the nominal baud rate can be set to: 10 kb/s, 25
kb/s, 50 kb/s, 100 kb/s, 250 kb/s, 1 Mb/s or Custom. The data baud rate can be set to: 500 kb/s, 1
Mb/s, 2 Mb/s, 5 Mb/s, 8 Mb/s, 10 Mb/s or Custom.
The method of copying settings is the same as I2C signal settings. See "I2C Signal Settings" for
details.
16.8.2 CAN FD Trigger
Touch Trigger Setting in the CAN FD trigger dialog box to set the trigger conditions:
A. Frame Type: Both, CAN, CAN FD
B. When the "Frame Type" is CAN FD, turn on or off
ISO
C. When the "Frame Type" is CAN FD, set the BRS
(Bit Rate Switch) to Both, Normal or FD
D. Trigger Condition: Start, Remote, ID, ID + Data,
Error
E. Return to the previous menu
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Trigger Condition
Start— The oscilloscope triggers at the beginning of the frame.
Remote— The oscilloscope triggers on a remote frame with a specified ID. ID, ID Bits (11-bit or
29-bit), and Curr ID Byte (1st, 2nd, 3rd, or 4th byte) can be set. Curr ID Byte is used to specify
the byte to be adjusted when using the universal knob.
ID— The oscilloscope triggers on the data frame that matches the specified ID. ID, ID Bits (11-
bit or 29-bit), and Curr ID Byte (1st, 2nd, 3rd, or 4th byte) can be set.
ID + Data— The oscilloscope triggers on the data frame that matches the specified ID and data.ID,
ID Bits (11-bit or 29-bit), Curr ID Byte (1st, 2nd, 3rd, or 4th byte), Data1, and Data2 can be set.
Error— The oscilloscope triggers on the error frame.
Error Frame
Stuff Bit Error
CRC Mismatch Error: The oscilloscope triggers when the calculated CRC does not
match the transmitted CRC.
Stuff Bit Cnt Err: Effective only when ISO is turned on, the oscilloscope triggers when
the stuff bit count is incorrect.
Stuff Bit Cnt Par. Err: Effective only when ISO is turned on, the oscilloscope triggers
when the polarity of the stuff bit count is incorrect.
16.8.3 CAN FD Serial Decode
The configuration of CAN FD decoding is similar to that of I2C decoding.
On the bus:
ID is displayed in green.
BRS (Bit Rate Switch) is displayed in light yellow.
ESI (Error State Indicator) is displayed in blue.
L (Data Length) is displayed in light yellow.
D (Data) is displayed in white.
CRC is displayed in blue.
Ack is displayed in pink.
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The red point at the end of a segment indicates there is not enough space on the display to
show the complete content of a frame and some content is hidden.
In the list view:
Time— The horizontal offset of the current data frame head relative to the trigger position.
Type— Type of the frame. Standard CAN frame is represented by "Std", CAN FD frame is
represented by "FD", the extended frame is represented by "Ext" and the remote frame is
represented by "RTR".
ID— Frame ID.
Length— Data length.
Data— Data bytes.
CRC— Cycle redundancy check.
Ack— Acknowledge bit.
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I2S Trigger and Serial Decode
This section covers triggering and decoding I2S signals. Please read the following for more details:
"I2S Signal Settings", "I2S Trigger" and "I2S Serial Decode".
16.9.1 I2S Signal Settings
Connect the WS, BCLK, and Data signals to the oscilloscope, set the mapping relation between
channels and signals, and then set the threshold level of each signal. The process of specifying the
source and threshold is similar to "I2C Signal Settings"
BCLK
In addition to specifying the source and the threshold level, BCLK signals also require the specification
of the Edge Select .
Rising– Data latched on the rising edge of the clock.
Falling– Data latched on the falling edge of the clock.
WS
In addition to specifying the source and the threshold level, WS signals also require the specification
of the Left CH .
Low– Select the left channel when WS is low and the right channel when WS is high.
High– Select the right channel when WS is low and the left channel when WS is high.
The method of copying settings is the same as I2C signal settings. See "I2C Signal Settings" for
details.
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16.9.2 I2S Trigger
Touch Trigger Setting in the I2S trigger dialog box to set the
trigger conditions：
A. Audio Variant: Audio-I2S, Audio-LJ, Audio-RJ
B. Trigger Condition: Data, Mute, Clip, Glitch, Rising
Edge, Falling Edge
C. Channel: Set the channel to trigger, Left or Right
D. Set the bit order to MSB or LSB
E. Start Bit: The start bit of data, ranging from 0 to 31
F. Data Bits: Specify the number of bits per channel,
the range is from 1 to 32 bits
G. When the "Trigger Condition" is Data, set the
compare type to =, ＞, ＜
H. When the "Trigger Condition" is Data, set the data
value
I. Return to the previous menu
Trigger Condition
Data — Trigger on data.
Touch Compare Type to select "=", ">" or "<".
Touch Value to set the data value by the universal knob or virtual keypad. The range
of data value is related to the number of Data Bits .
Mute — Trigger on the mute signal. Mute signal: Volume is less than the set value and duration
reaches the set value.
Touch MNF to set the mute threshold by the universal knob or virtual keypad. The
range of values is related to the number of Data Bits .
Touch Duration to set the value by the universal knob or virtual keypad. The range
is 1-64 frames.
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Clip — Trigger on the clipped signal. Clip signal: Volume is greater than the set value and
duration reaches the set value.
Touch Clip Level to set the clip threshold by the universal knob or virtual keypad.
The range of values is related to the number of Data Bits .
Touch Duration to set the value by the universal knob or virtual keypad. The range
is 1-64 frames.
Glitch — Trigger on glitches within the audio signal.
Touch Threshold to set the threshold by the universal knob or virtual keypad. The
range of values is related to the number of Data Bits .
Rising Edge — Trigger on signals greater than the Threshold setting value.
Touch Threshold to set the threshold by the universal knob or virtual keypad. The
range of values is related to the number of Data Bits .
Falling Edge — Trigger on signals less than the Threshold setting value.
Touch Threshold to set the threshold by the universal knob or virtual keypad. The
range of values is related to the number of Data Bits .
16.9.3 I2S Serial Decode
The configuration of I2S decoding is similar to that of I2C decoding.
In the list view:
Time— The horizontal offset of the current data frame head relative to the trigger position.
Type— Channel type, the left channel is represented by "Left CH" and the right channel is
represented by "Right CH".
Data— Data bytes
Error— Error
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MIL-STD-1553B Trigger and Serial Decode
This section covers triggering and decoding MIL-Standard 1553B signals. Please read the following
for more details: "MIL-STD-1553B Signal Settings" and "MIL-STD-1553B Serial Decode".
16.10.1 MIL-STD-1553B Signal Settings
Connect the MIL-STD-1553B signal to the oscilloscope, set the mapping relation between channels
and signals, and then set the threshold level of each signal. The process of specifying the source and
threshold is similar to "I2C Signal Settings"
16.10.2 MIL-STD-1553B Serial Decode
The configuration of MIL-STD-1553B decoding is similar to that of I2C decoding.
On the bus:
C/S the Command/Status word is displayed in green.
RTA the RT address is displayed in the frame and displayed in light yellow.
C/S Data is displayed in the frame and is displayed in white.
The data word is displayed in yellow and the data is displayed in the frame and displayed
in white.
The Check Code is displayed in the frame and displayed in blue.
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In the decoding list view:
Time— The horizontal offset of the current data frame head relative to the trigger position.
RTA— The RT address
Type— Type of the word
Data— Data values
Error— Error type
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SENT Trigger and Serial Decode
This section covers triggering and decoding SENT signals. Please read the following for more details:
"SENT Signal Settings", "SENT Trigger" and "SENT Serial Decode".
16.11.1 SENT Signal Settings
Connect the SENT signal to the oscilloscope, set the mapping relation between channels and signals,
and then set the threshold level of each signal. The process of specifying the source and threshold is
similar to "I2C Signal Settings"
In the Protocol Config menu of trigger or decode, the following parameters are available:
A. Touch to specify the nominal clock period (tick) time
B. Set the percent tolerance to determine whether the sync
pulse is valid for decoding the data
C. Set the number of nibbles in a Fast Channel Message
D. Set the CRC format that will be used in calculating the
correctness of the CRCs. The New CRC selection uses
the 2010 CRC format. If “NEW” is not selected, the CRC
will use the 2008 format. Enhanced Serial Message
CRCs are always calculated using the 2010 format, but
for the Fast Channel Messages, and for Short Serial
Message CRCs, the chosen setting is used
E. Specify whether there is a pause pulse between Fast
Channel Messages
F. Return to the previous menu
16.11.2 SENT Trigger
When the protocol is set to SENT, the following trigger conditions can be set: Start, Slow Channel,
Fast Channel, and Error.
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Touch Trigger Setting in the SENT trigger
dialog box to select the trigger condition:
Start — The oscilloscope will be triggered at the start of the message (after 56 synchronization ticks).
You can select the type of message: Fast Channel Message, Slow Channel Message, or any.
Fast Channel — The oscilloscope will be triggered on a Fast Channel Message when the Status &
Communication nibble and the data nibbles match the specified values.
State can be selected in the hexadecimal range of 0x0
to 0xF. If the value is selected as "0xX", the state is
ignored.
Compare Type can be specified as Equal, Not Equal,
Less than, Less or Equal, Greater than, Greater or Equal,
in Range of, out of Range.
At Pos determines the start position of the trigger data.
If selected as Value, you need to set Nibble Pos in the
decimal range of 0 to 5. If selected as Don’t care, the
oscilloscope will be triggered at the first data which
matches the specified condition.
Nibble Len can be selected in the decimal range of 1 to
6. It is associated with the Nibble Pos .
Data can be selected in hex. The range is associated
with the Nibble Pos . If the data is selected as "0xXX",
the data is ignored.
Slow Channel — the oscilloscope will be triggered on a Slow Channel Message.
Frame (short serial message) — The 16-bit message consists of a 4-bit Message ID nibble, 2 nibbles
(1 byte) of data, and a CRC checksum nibble. If ID and data match, then trigger on the end of CRC
bit.
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The serial message frame contains 21 bits of payload data. Two different configurations can be
chosen determined by the configuration bit (serial data bit #3, serial communication nibble No. 8):
Frame (enhanced serial message with 4bits ID) —16-bit data and 4-bit message ID, the
configuration bit is 1.
Frame (enhanced serial message with 8bits ID) —12-bit data and 8-bit message ID, the
configuration bit is 0.
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If you set the trigger condition to Slow Channel:
ID can be selected in the hexadecimal range of 0x0 to
0xF (short serial / enhanced serial with 4 bits ID）or 0x00 to
0xFF（enhanced serial with 8 bits ID）. If it is selected as
"0xXX", the ID is ignored.
Compare Type can be specified as Equal, Not Equal,
Less than, Less or Equal, Greater than, Greater or Equal,
in Range of, out of Range.
Data can be selected in the hexadecimal range of 0x00
to 0xFF (short serial）or 0x0000 to 0xFFFF（enhanced serial
with 4 bits ID）or 0x000 to 0Xfff(enhanced serial with 8 bits
ID). If it is selected as "0xXX", the data is ignored.
Error — the oscilloscope triggers on the error frame. Errors include Successive Sync Pulses Error，
Pulse Period Error, Fast Channel CRC Error, Slow Channel CRC Error, All CRC Errors.
Successive Sync Pulses Error: Triggers on a sync pulse whose width varies from the previous
sync pulse's width by greater than 1/64 (1.5625%, as defined in the SENT specification).
Pulse Period Error: Triggers if a nibble is either too wide or too narrow (for example, data nibble
< 12 (11.5) or > 27 (27.5) ticks wide). Sync, S&C, data, or checksum pulse periods are checked.
Fast Channel CRC Error: Triggers on any Fast Channel Message CRC error.
Slow Channel CRC Error: Triggers on any Slow Channel Message CRC error.
All CRC Errors: Triggers on any CRC error, Fast or Slow.
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16.11.3 SENT Serial Decode
The configuration of SENT decoding is similar to that of I2C decoding.
On the bus:
For Fast Channel:
SYNC is displayed in pink
STATE is displayed in green
DATA is displayed in white
CRC and Pause pulse are displayed in blue
For Slow Channel:
ID is displayed in green
DATA are displayed in white
CRC is displayed in blue
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In the list view:
Time — The horizontal offset of the current data frame head relative to the trigger position.
Sync — Sync pulse width (only fast channel)
State — Status & Communication nibble (only fast channel)
ID — ID of the frame. (only slow channel)
Data — Data values
CRC — Cycle redundancy check
Pause — Pause ticks
Error — Error type
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Manchester Serial Decode
This section covers decoding Manchester signals. Please read the following for more details:
"Manchester Signal Settings" and "Manchester Serial Decode".
16.12.1 Manchester Signal Settings
Connect the Manchester signal to the oscilloscope, set the mapping relation between channels and
signals, and then set the threshold level of the signal. The process of specifying the source and
threshold is similar to "I2C Signal Settings"
In the Protocol Config menu of decode, the following parameters are available:
A. Touch to specify the baud rate, the range is 500b/s to 5Mb/s
B. Set the Manchester signal's logic type. R:1 indicates that
rising edge is used to encode a bit value of logic 1, and F:1
indicates that falling edge is used to encode a bit value of
logic 1
C. Set the idle level
D. Set the starting edge of the Manchester signal. The range is
1~32
E. Set the minimum idle time/inter-frame gap time of the
Manchester bus in terms of the bit width.
F. Set the display format to Byte or Bit
G. Set the bit order to MSB or LSB
H. Set the sync field size, from 0 to 32
I. Set the header size, from 0 to 32
J. Set the number of words in the data field, from 1 to 255
K. Set the data word size, from 2 to 8
L. Set the trailer size, from 0 to 32
M. Return to the previous menu
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16.12.2 Manchester Serial Decode
The configuration of Manchester decoding is similar to that of I2C decoding.
On the bus:
SYNC is displayed in pink
The header is displayed in green
DATA is displayed in white
The trailer is displayed in blue
In the list view:
Time — The horizontal offset of the current data frame head relative to the trigger position.
Data — Data words
Error — Error type
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17 Cursors
Overview
Cursors are important tools when measuring signals. Rapid measurements can be performed using
cursors in both horizontal and vertical directions. The cursor types include X1, X2, X1-X2, Y1, Y2,
and Y1-Y2, used to indicate X-axis values (time or frequency) and Y-axis values (amplitude) on a
selected waveform (CH1/CH2/CH3/CH4/Func/REF/Histogram).
Press the Cursors button on the front panel or touch the menu Cursors > Menu to open the
cursors dialog box:
A. Turn cursor function on or off
B. Cursor Mode. The vertical cursors will automatically track the
waveform in Trace mode.
C. Specify the cursor
D. Set the position of the specified cursor (by gestures, universal
knob, or virtual keypad)
E. Select the cursors type (horizontal, vertical, horizontal +
vertical), this option is supported only in "Manual" mode.
F. Select the source
G. Display style of cursors text
H. X cursor reference (Delay or Position)
Delay measures the cursor position relative to the Horizontal
Delay/Offset position
Position measures the cursor position relative to the
horizontal center of the display
I. Y cursor reference (Offset or Position), this option is
supported only in "Manual" mode.
Offset measures the cursor position relative to the
Vertical/Offset position
Position measures the cursor position relative to the vertical
center of the display
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Cursors Mode
Manual -- Manually sets the cursors’ position. Cursors type (horizontal, vertical, horizontal +
vertical) is available in this mode.
Track -- The cursor type is automatically set to "horizontal + vertical". In this mode, only horizontal
cursors are adjustable, while the vertical cursors automatically attach to the cross-point of the
cursor and the source waveform.
Measure – Automatically indicates the measured item using cursors
Manual Mode
Track Mode
Measure Mode
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Cursors Type
X (horizontal) -- Vertical dotted lines that measure horizontal time (when the source is an FFT
waveform, X cursors measure frequency).
X cursors (time) X cursors (frequency)
X1 — The left (default) vertical dotted line. It can be manually moved to any horizontal
position on the screen.
X2 — The right (default) vertical dotted line. It can be manually moved to any horizontal
position on the screen.
X1- X2 — The difference between X1 and X2. After this option is selected, turning the
universal knob will move both X1 and X2 simultaneously.
Y（vertical）– Horizontal dotted lines that measure vertical voltage or current (depending on the unit
of the selected channel). When the cursor's source is the math function, the units will match the math
function.
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Y1 — The upper (default) horizontal dotted line. It can be manually moved to any vertical
position on the screen.
Y2 — The lower (default) horizontal dotted line. It can be manually moved to any vertical
position on the screen.
Y1- Y2 — The difference between Y1 and Y2. After this option is selected, turn the
universal knob to move both Y1 and Y2 simultaneously.
X+Y (horizontal + vertical) -- Both the X cursors and Y cursors are enabled.
Display Mode
Display Mode M1 Display Mode M2
M1 – The position information of each cursor is attached to the cursor, and the difference
information is between the two cursors with arrows connected to the cursors. This mode is more
intuitive.
M2 -- The position information of each cursor and the difference between the cursors are
displayed in a region on the screen. The region can be moved by gestures to avoid covering the
waveform. This mode is relatively concise.
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Cursors Reference
X cursors reference:
Fixed Delay– When the timebase is changed, the value of X cursors remains fixed.
Fixed Position– When the timebase is changed, the X cursors remain fixed to the grid
position on the display.
Y cursors reference:
Fixed Offset– When the vertical scale is changed, the value of
Y- cursors remain fixed.
Fixed Position– When the vertical scale is changed, the Y-cursors remain fixed to the grid
position on the display.
Take X cursors reference as an example to demonstrate the scaling effect of different settings:
Timebase=50ns/div，X1=-50ns=-1div，X2=100ns=2div
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Fixed position, timebase is changed to 100 ns/div, the grid number of X cursors (-1div, 2div)
remains fixed. The value of X1 and X2 is changed to -100 ns, 200 ns.
Fixed delay, timebase is changed to 100 ns/div, the value of X cursors (-50 ns, 100 ns)
remains fixed. The grid number of X cursors is changed to -0.5div, 1div.
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Select and Move Cursors
The cursors can be selected and moved directly by gestures and the universal knob on the front panel,
in addition, they can be selected in the cursor’s value dialog box.
Gestures
Directly touch the cursor and drag it, as shown below:
Touch the display area of △ X (or △ Y) in M1 mode and drag it to move the two cursors
simultaneously, as shown in the figure below. This is equivalent to the operation on the cursor type
X1-X2 or Y1-Y2.
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Universal Knob
Move the cursor position by turning the universal knob on the front panel. Press the knob to select
different cursor lines. For example, if the current cursor is X1, press to select X2, and press again to
select X1-X2.
Gestures move the cursor quickly but not precisely, while the knob moves the cursor precisely but not
as quickly. You can use both in combination to suit your needs: First, a rough adjustment is achieved
by using gestures, and then the fine adjustment is achieved by using the universal knob.
Dialog Box
Touch the cursor value area of the dialog box, and then rotate
the universal knob to adjust the position.
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18 Measurement
Overview
The SDS2000X HD features a strong automatic measurement list. These parameters can be
automatically measured without cursors and include common measurements such as rise time, fall
time, peak-peak, and period. The SDS2000X HD can also measure multiple channels at the same
time, showing up to 5 parameter measurements with statistics while in the M1 display mode and up
to 12 parameters in the M2 mode. If you wish to view more parameters on a specified channel, then
the "Simple" mode can be employed. For measuring waveform of interest in a time gate, the "Gate"
function is suggested.
Some parameter measurements (such as the mean) may be a value generated by all the data in a
frame. Some parameter measurements (such as period) accumulate all measurements in a frame,
but the displayed value is always the first value. If you want to know the distribution of multiple
parameters in one frame, you should use the statistics function.
A. The waveform display area automatically compresses when the other windows are
displayed
B. Measurement parameters and statistics display area. If select the mode as “Simple”, the
"Simple" parameter area is displayed
C. Statistics histogram display area
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D. Measure dialog box
Press the Measure button on the front panel or touch Measure > Menu to open the dialog
box.
A. Enable/disable measure
B. Set the mode of measure: Simple or Advanced. "Simple"
shows the specified basic measurement parameters of
the selected channel. In "Advanced" mode, the
measurement parameters can be added one by one as
needed
C. Measure configuration: gate, amplitude strategy,
threshold, and display mode
D. Clear all the selected measurements
E. Select measurement parameters
F. Tools including Trend, Track, and Measure Cursor
G. Turn on or off statistics
H. Statistics settings: count limit, AIM limit, reset statistics,
and histogram
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Set Parameters
Touch Type in the measure dialog box, or touch + in the measurement parameters and
statistics display area to open the parameter selection window:
A. Set the source of the current setting.
B. Measurement parameter classification tabs, including Favorite, Vertical, Horizontal,
Miscellaneous, and CH Delay. Touch a tab and in the area will display the
corresponding parameters
C. Parameters. Touch the parameter to be measured to activate it, and touch it again to close
the parameter.
D. Background highlighted parameters represent it is activated. In the figure above, "Pk-Pk"
and "ROV" are activated.
E. Description of the last selected parameter.
The correct steps to add a measurement parameter are to select the source in the area and then
select the parameter in the area. For example, to add Pk-Pk measurements for C1 and Period
measurements for C2, follow the steps below:
Source > C1 > Vertical > Pk-Pk
Source > C2 > Horizontal > Period
For the channel delay (CH Delay) measurement, because the number of sources involved is greater
than 1, the steps to specify the source is different:
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In the parameter selection area, the channel corresponding to Source A is specified first, and then
the channel corresponding to Source B . Finally, the measurement parameter is selected. For
example, to activate the skew between C1 and C2, you can follow the following steps:
Source A > C1 > Source B > C2>Skew
Once a parameter is selected, it will appear in the parameter and statistical display area below the
grid:
Touch + in the blank area to add a parameter.
Touch – in the upper right corner of each parameter to close the parameter.
Touch × in the upper right corner of the area to close measurement.
Touch Clear in the dialog box to close all parameters.
The “Favorite” tab is used to store frequently used items. You can customize this tab. Up to 20 items
can be stored in it. Long-press an item to add or remove it from the “Favorite” tab. For example, to
add Pk-Pk to the “Favorite” tab:
Advanced > Type > Vertical > Pk-Pk > Add to favorite
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To remove Period from the “Favorite” tab:
Advanced > Type > Favorite > Period > Delete from favorite
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Type of Measurement
18.3.1 Vertical Measurement
Vertical measurement includes 19 parameters:
Max: Highest value in the input waveform
Min: Lowest value in the input waveform
Pk-Pk: Difference between maximum and minimum data values
Top: Value of most probable higher state in a bimodal waveform
Base: Value of most probable lower state in a bimodal waveform
Amplitude: Difference between top and base in a bimodal waveform. If not bimodal,
the difference between max and min
Mean: Average of data values
Cycle Mean: Average of data values in the first cycle
Stdev: Standard deviation of the data
Cycle Stdev: Standard deviation of the data in the first cycle
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RMS: Root mean square of the data
Cycle RMS: Root mean square of the data in the first cycle
Median: Value at which 50% of the measurements are above and 50% are below
Cycle Median: Median of the first cycle
Overshoot (FOV): Overshoot following a falling edge; 100%* (base-min)/amplitude
Overshoot (ROV): Overshoot following a rising edge; 100%*(max-top)/amplitude
Preshoot (FPRE): Overshoot before a falling edge.
Equal to 100 %*( max-top)/amplitude.
Preshoot (RPRE): Overshoot before a rising edge.
Equal to 100 %*( base-min)/amplitude.
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L@T: Level measured at trigger position
18.3.2 Horizontal Measurement
Horizontal measurement includes 17 parameters:
Period: Time between the middle threshold points of two consecutive like-polarity
edges.
Freq: Reciprocal of the period
Time@max: First time of maximum value
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Time@min: First time of minimum value
+Width: Time difference between the middle threshold of a rising edge to the middle
threshold of the next falling edge of the pulse
-Width: Time difference between the middle threshold of a falling edge to the middle
threshold of the next rising edge of the pulse
+Duty: Positive Duty Cycle. The ratio of positive width to period
-Duty: Negative Duty Cycle. The ratio of negative width to period
+BWidth: Time from the first rising edge to the last falling edge at the middle threshold
-BWidth: Time from the first falling edge to the last rising edge at the middle threshold
Delay: Time from the trigger to the first transition at the middle threshold
T@M: Time from the trigger to each rising edge at the middle threshold
Rise Time: Duration of rising edge from lower threshold to upper threshold
Fall Time: Duration of falling edge from upper threshold to lower threshold
10-90%Rise: Duration of rising edge from 10-90%
90-10%Fall: Duration of falling edge from 90-10%
CCJ: The difference between two continuous periods
18.3.3 Miscellaneous Measurements
The Miscellaneous measurements tab includes 16 parameters:
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+Area@DC: Area of the waveform above zero
-Area@DC: Area of the waveform below zero
Area@DC: Area of the waveform
AbsArea@DC: Absolute area of the waveform
+Area@AC: Area of the waveform above average
-Area@AC: Area of the waveform below average
Area@AC: Area of the waveform above the average minus the area of the waveform
below average
AbsArea@AC: Area of the waveform above the average plus the area of the
waveform below the average
Cycles: Number of cycles in a periodic waveform
Rising Edges: Number of rising edges in a waveform
Falling Edges: Number of falling edges in a waveform
Edges: Number of edges in a waveform
Ppulses: Number of positive pulses in a waveform
Npulses: Number of negative pulses in a waveform
PSlope: The slope of the rising edge
NSlope: The slope of the falling edge
18.3.4 Delay Measurement
Delay measurement measures the time difference between two channels. It includes 14 delay
parameters:
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Phase: Phase difference between two edges
Skew: Time of source A edge minus time of nearest source B edge
FRFR: The time between the first rising edge of source A and the following first rising
edge of source B at the middle threshold
FRFF: The time between the first rising edge of source A and the following first falling
edge of source B at the middle threshold
FFFR: The time between the first falling edge of source A and the following first rising
edge of source B at the middle threshold
FFFF: The time between the first falling edge of source A and the following first falling
edge of source B at the middle threshold
FRLR: The time between the first rising edge of source A and the last rising edge of
source B at the middle threshold
FRLF: The time between the first rising edge of source A and the last falling edge of
source B at the middle threshold
FFLR: The time between the first falling edge of source A and the last rising edge of
source B at the middle threshold
FFLF: The time between the first falling edge of source A and the last falling edge of
source B at the middle threshold
Tsu@R: Data setup time before the clock rising edge
Tsu@F: Data setup time before the clock falling edge
Th@R: Data hold time after the clock rising edge
Th@F: Data hold time after the clock falling edge
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Trend
After adding a measurement parameter, a Trend can be used to observe the long-term change of the
selected measurement value over time.
A. Measurement parameter display area
B. Trend plot display area
C. Extend the range of time. Touch it to expand the time range.
D. Current value
E. Maximum value
F. Minimum value
G. Average value
H. Reset statistics
Press the Clear Sweeps button or touch Reset Statistics in the measure dialog box, or touch
the symbol in the statistics display area to clear and restart statistics.
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Track
The measure values VS. time plot of a horizontal parameter (e.g. frequency, rise time) in one frame
can be observed when the Track is enabled.
The upper limit of the statistic number in a frame is set in Statistics > AIM Limit , which means
the values exceeding the limit will not be shown in the track plot.
Display Mode
In advanced measurement mode, two display modes are supported: M1 and M2.
In M1 mode, up to 5 parameter measurements are displayed at a time. When statistics are enabled,
they are listed under the measurement items. Touch a column to add or replace a measurement.
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In M2 mode, up to 12 parameter measurements are displayed at a time. When statistics are enabled,
they are distributed on the right side of the measurement item. Touch a row to add or replace a
measurement.
Note: In M2 mode histogram display is not supported.
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Measurement Statistics
Measurement statistics are based on the total number of captured waveforms. In Roll mode,
measurement statistics increase over time. Touch Statistics Setting in the measure dialog box to
recall the Statistics Config dialog box:
A. Set the maximum number of samples for the statistics
function. The setting range is 0 ~ 1024, or unlimited. If there
is no limit, the number of statistics will be accumulated. If there
is a limit, when the maximum number of statistics N is
reached, only the latest N measurements will be counted.
When the count is limited, only the first period measurement
value of each frame is counted
B. Set the upper limit of the statistic number in a frame. Valid only
when the count limit is set to "Unlimited". The setting range is
1 ~ 25,000
C. Clear and restart the statistics. Pressing the Clear Sweeps
button on the front panel has an equivalent effect
D. Turn the histogram on or off
E. Return to the previous menu
Enable the Statistics function to observe the distribution of the measured values of every selected
parameter.
Value – The current measurement
Mean – Average of all historical measurements
Min – The minimum of all historical measurements
Max – The maximum of all historical measurements
Stdev – Standard deviation of all historical measurements
Count – The number of historical measurements
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Press the Clear Sweeps button or touch Reset Statistics in the statistics setting dialog box, or
touch the symbol in the statistics display area to clear and restart statistics.
When the oscilloscope detects the trace under test is clipped, an extra overflow indicator will appear
after the measurement value:
Waveform clipped at the top
Waveform clipped at the bottom
Waveform clipped at both top and bottom
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Statistics Histogram
After enabling statistics on a selected measurement, you can also activate a statistical histogram. The
histogram appears at the bottom of the statistics area. This enables users to quickly view the
probability distribution of the measured parameters. The color of the histogram is consistent with the
measurement source (Channel 1 is yellow, etc.).
Touch the histogram area of a parameter to enlarge it for details. You can move the large histogram
window position around the display by dragging. Touch the histogram of another parameter to switch
to the corresponding enlarged histogram.
A. Parameter
B. Histogram display area. The X-axis represents measured values and Y-axis represents
the probability.
C. Count of statistics
D. Current value
E. The bin that includes the maximum value and the probability of a value falling into it
F. Close the enlarged histogram
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Simple Measurements
Enabling Simple Measurement displays all selected measurement parameters of the specified
channel at the same time. The font color of the measurement parameters is consistent with the color
of the specified source. Yellow for Channel 1, Purple for Channel 2, etc.
Gate
Sometimes the user may want to measure parameters for a certain specified time range of the signal
and ignore signal parts that lie outside of that range. In this case, the Gate function can be helpful.
Turn on the Gate , then two horizontal cursors A and B will
appear in the grid area. The gate setting dialog box will be
displayed on the right.
Gate cursors A and B are used to define the range of time for
parameter measurements. The oscilloscope only measures the
parameters of the data between A and B, ignoring the data
outside the range.
The setting of gate cursors is similar to that of ordinary cursors.
See "Select and Move Cursors" for details.
The figure below shows a scenario in which the gate function is used to measure the peak-peak
parameter of the trough of an amplitude modulated waveform:
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Amplitude Strategy
According to different types of input signals, users can choose the corresponding amplitude
calculation strategy which can measure top and bottom values with more accuracy.
Touch Config ＞ Amplitude Strategy in the measure dialog box to recall the amplitude strategy
dialog box:
A. Set the amplitude calculation strategy. When set to Auto,
the amplitude calculation strategy will be selected
automatically according to the input signal to ensure the
accuracy of the measured value
B. Set the top value calculation strategy. When set to
Histogram, the value at the upper half of the waveform will
be counted, and the value with the maximum probability will
be identified as the top value; when set to max, the
maximum value of the waveform will be identified as the
top value
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C. Set the base value calculation strategy. When set to Histogram, the value at the lower half
of the waveform will be counted, and the value with the maximum probability will be
identified as the base value; when set to min, the minimum value of the waveform will be
identified as the base value
D. Return to the previous menu
Threshold
Measurement thresholds can be defined by the user. This is more flexible than fixed thresholds. For
example, for pulse-width measurement, the threshold can be specified rather than fixed at 50%. For
rise time, the lower / upper thresholds can be specified rather than fixed at 10% / 90%.
Changing the default threshold may change the measurement results of relevant measurement items,
such as Period, frequency, +width, -width, +duty, -duty, +BWidth, -BWidth, delay, T@M, rise time, fall
time, CCJ, cycles, rising edges, falling edges, edges, Ppulses, Npulses, and delay measurement.
Touch Config ＞ Threshold in the measure dialog box to recall the threshold dialog box:
A. Set measurement threshold source
B. Set the type of threshold
C. Set the upper value
D. Set the middle value
E. Set the lower value
F. Return to the previous menu
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Threshold Type
Percent: Set according to the percentage of the waveform. The setting range of lower value and
upper value is 1% ~ 99%, and the low value shall not be greater than the middle value and high value
Absolute: Set according to the vertical range. The absolute threshold value depends on the vertical
scale, offset and probe attenuation. These values should be set before setting absolute thresholds.
Lower and upper values are limited to the range of the screen. If any absolute threshold is greater or
less than the minimum or maximum waveform value, the measurement may be invalid.
Hardware Frequency Counter
The hardware frequency counter is a stand-alone, hardware-based frequency measurement function.
Differing from the “Frequency” parameter (see section “Horizontal Measurement”) which is measured
by software, the hardware frequency counter directly uses the trigger signal as the input of a hardware
counter, which yields 7-digit frequency measurement accuracy. The accuracy of the “Frequency”
parameter measured by software is relative to the sample rate. The lower the sample rate, the worse
the accuracy. In situations where the sample rate is less than 2 times the input frequency, the results
will be incorrect. The hardware frequency counter does not have this limitation. Its result is always
shown at the top-right of the display as shown below:
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19 Math
Overview
The SDS2000X HD supports 2 math traces and multiple operators. Arithmetic operators: Addition (+),
subtraction (-), multiplication (x), division (/), average, ERES, identity, negation, maxhold, minhold;
Algebra operators: differential (d/dt), integral (∫dt), square root (√), absolute (|y|), sign, exp, ln,
interpolate; and FFT, as well as a formula editor. The math traces are labeled with icons “F1 ~ F2”
and can be measured by the cursors or as the source of auto measurement.
Press the MATH button on the front panel, or touch + in the channel descriptor box region and
select Func1 or Func2 , and then the math dialog box pops up.
A. Select the math trace, F1-F2
B. Turn on or off the math operation
C. Select the function. Touch the area to recall the
function setting page, and select the source and
operator
D. Set the vertical scale of the math operation
E. Set the label text of the math trace
F. Set the vertical position of the math operation. The
vertical scale and position of the math can also be
set by knob, referring to "Vertical Control"
G. Enable/Disable Invert, similar to the process used in
"Vertical Setup".
Units for Math Waveform
Different operations have different dimensions. Therefore, the specific units displayed in Scale
depend on the operation:
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Math Operation
Unit
Addition (+) or
Subtraction (-)
V, A, or U*
*(used when the units of two sources are not
consistent)
Multiplication (x)
V
∧
2, A
∧
2, or W
Division (/) None, Ω (Resistance unit Ohms), S (conductance
unit Siemens)
FFT dBVrms, Vrms, dBArms, Arms, dBm
d/dt V/s (Volt/second) or A/s (A/second)
∫dt VS (Volt*second) or AS (A*second)
√
V
∧
0.5 or A
∧
0.5
|y| V, A
Sign V, A
Exp or Exp10 V, A
Ln or lg V, A
intrp V, A
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Arithmetic
The SDS2000X HD supports Addition, Subtraction, Multiplication, Division, Average, ERES, Identity,
Negation, Max-hold, and Min-hold.
19.2.1 Addition / Subtraction / Multiplication / Division
The SDS2000X HD can perform arithmetic operations including addition, subtraction, multiplication,
or division on any two analog input channels, and the values of Source A and Source B are computed
point-by-point.
The following figure shows an example of F1 = C1 + C2:
19.2.2 Identity / Negation
The values of Source A are computed point-by-point when identity or negation operation is chosen in
any analog channel. The following figure shows an example of F1 = -C1:
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19.2.3 Average / ERES
Average / ERES can be set in acquisition mode and arithmetic function as well, but with different
compute methods. Average and ERES in acquisition mode is computed by hardware with a higher
speed and sampling rate than computed by software in the arithmetic mode.
19.2.4 Max-hold / Min-hold
The value of Max-hold and Min-hold are based on statistical calculations from multiple frames. The
following figure shows the Max-hold result.
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Algebra
The SDS2000X HD can perform algebraic operations including differential (d/dt), integral (∫dt), square
root (√), absolute(|x|), sign, exp (
), exp10 (10
), ln, lg and interpolate (Intrp).
19.3.1 Differential
The differential (d/dt) operator is used to calculate the derivative of the selected source. It is always
used to measure the instantaneous slope of the waveform, such as the slew rate of an operational
amplifier.
The differential equation is:
dx
y(i)-dx)+(iy
di
Where:
d = Differential result
y = Values of source data
i = Data point index
dx = Differential interval
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The range of “dx” in the d/dt menu is 4~ number of samples pts.
Note: Differentiation is sensitive to noise. It is helpful to set the acquisition mode to “Average” or
“ERES” to help minimize the visible effects of additional noise.
19.3.2 Integral
Integral operation integrates the waveforms on the screen or within the specified gate.
Setting Offset in the integral menu provides an approach to correct the DC offset of the source.
Small DC offsets in the input signal (or even small offset errors of the oscilloscope itself) may cause
the integral output waveform to "ramp" up or down, as shown below:
Integral without Offset Integral with Offset
In addition, the integral operation can be performed within a specified gate. Touch the Gate area
in the math dialog box, and enable the Gate function, then set Gate A and Gate B to define
the gate. The setting of the gate cursors is similar to that of normal cursors. See "Select and Move
Cursors" for details.
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19.3.3 Square Root
Square root （√） calculates the square root of the selected source. If the waveform value is negative
(the waveform is below the ground level), the result is displayed as zero.
19.3.4 Absolute
Absolute（|x|）calculates the absolute value of the selected trace.
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19.3.5 Sign
In mathematics, the sign function or signum function (from signum, Latin for "sign") is an odd
mathematical function that extracts the sign of a real number.
The sign function of a real number x is defined as follows:
Sign(x) = -1, if x < 0;
= 0, if x = 0;
= 1, if x > 0.
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19.3.6 exp10
The exponential operation includes the exponential operation
based on constant e and the
exponential operation 10
based on 10.
For example: y(x) =
.
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19.3.7 lg
Logarithmic operation includes logarithm base e (ln) and logarithm base 10 (lg). In logarithmic
operation, if the waveform value is negative (the waveform is below the ground level), the result is
displayed as zero.
For example F1 =
, where x is the trigonometric wave function. F2 = ln (F1).
19.3.8 Interpolate
Between the adjacent sampling points, the waveform is interpolated according to the selected
interpolation method and interpolation coefficient. Touch Acquire ＞ Interpolation to set the
interpolation method, and the interpolation coefficient can be set to 2, 5, 10, or 20.
coefficient = 2 coefficient = 20
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Frequency Analysis
The result of FFT (Fast Fourier Transform) calculations is the frequency spectrum of the source signal.
The horizontal axis of the FFT display is labeled using frequency (Hz) units instead of time (seconds).
In addition, the vertical axis provides the option of logarithmic scaling (dBVrms/dBArms or dBm).
A. Time-domain waveform display area
B. Spectrum (FFT) waveform display area
C. FFT parameter display area
D. Dialog box
Parameter Display Area
The FFT parameters are displayed in the upper right of the spectrum waveform display area:
FFT sample rate (Sa): FFT operation results present the first Nyquist zone (DC ~ Sa/2) of the
frequency spectrum. Be aware that the FFT sample rate may be inconsistent with the sample
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rate in the time domain. Assuming the max points value is set to 2 Mpts:
When the number of points in the time domain, N, is less than 2 Mpts, the FFT takes the
number which is an integer power of 2 closest to N. In this case, FFT sample rate = sample
rate in the time domain.
When N is greater than 2 Mpts, FFT first decimates N by D and then takes the first 2 Mpts
for the calculation. In this case, FFT sample rate = sample rate in time domain/D.
For example, in the case of sample rate in the time domain is 2 GSa/s and the number of
samples is 10 Mpts, the FFT first decimates the samples by 4, to 2.5 Mpts, and then takes
the first 2 Mpts to calculate the spectrum. In this example, FFT sample rate = 2GSa/s ÷ 4 =
500 MSa/s.
FFT points (Curr): The current FFT points, which is an integer power of 2. The SDS2000X HD
supports up to 2 M points (2097152, to be exact).
Frequency interval (△
f): The frequency interval between two adjacent points in the FFT
sequence, which is proportional to the frequency resolution.
Average count of FFT (Avg): Displayed only when the FFT mode is set to "Average", indicating
the completed average count.
Select Operation as FFT in the math dialog box and touch
Config to recall the configuration dialog box:
A. Set the maximum points (2
n
, n = 10 ~ 21)
B. Set the window type (Rectangle, Blackman, Hanning,
Hamming, and Flattop)
C. Automatically set the horizontal axis to fall span（0~f
s
/2）
D. Automatically set the center frequency to the maximum
frequency component in the previous frame
E. Select the display mode (Split, Full Screen, and
Exclusive)
F. Select the FFT mode (Normal, Average, and Max-Hold)
G. Set the average count in average mode
H. Reset average
I. Return to the previous menu
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Windows
Spectral leakage in FFTs can be considerably decreased when a window is used. SDS2000X HD
provides five windows that have different characteristics and apply to different scenarios.
For example, for a two-tone signal with a very close frequency interval, it is suitable to use a Rectangle
window with the best frequency resolution. For the case where the accuracy of amplitude
measurement is critical, it is recommended to select the Flattop window with the best amplitude
resolution.
Window
Characteristics
Main lobe
width
Side lobe
suppression
Maximum
amplitude error
Rectangle The best frequency resolution
The worst amplitude resolution
It is equivalent to the case of
no window
4π/N -13 dB 3.9 dB
Hanning Better frequency resolution
Poor amplitude resolution
8π/N -32 dB 1.4 dB
Hamming Better frequency resolution
Poor amplitude resolution
8π/N -43 dB 1.8 dB
Blackman Poor frequency resolution
Better amplitude resolution
12π/N -58 dB 1.1 dB
Flattop The worst frequency resolution
The best amplitude resolution
23π/N -93 dB < 0.1dB
Display Mode
Split: Time-domain waveform and frequency domain waveform are displayed separately. The
time-domain waveform is on the upper half screen, while the frequency domain waveform is
located within the lower half of the display. In Split mode, if Zoom is enabled, the zoomed
waveform and the frequency domain waveform are displayed on the lower half screen together.
Full Screen: Time-domain waveform and frequency-domain waveform are displayed together.
Exclusive: Only the frequency-domain waveform is displayed.
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Split Mode, Zoom off Split Mode, Zoom on
Full-Screen Mode Exclusive Mode
FFT Mode
Normal: Displays the FFT result of each frame directly.
Max-Hold: Holds the maximum value in the historic frame on the display until cleared. This mode
is suitable for detecting discontinuous waves, such as sporadic pulse signals, or frequency
hopping signals. Press the Clear Sweeps button on the front panel to clear the max-hold
waveform.
Average: Reduces the effect of the superimposed random noise on the signal. After the FFT
mode is set as Average, Average will appear under FFT Mode . The average count can
be set here, ranging from 4 to 1024. Press the Clear Sweeps on the front panel or touch
Reset in the dialog box to restart the average counter.
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Touch Vertical or Horizontal in the math dialog box to
recall the FFT vertical or horizontal settings dialog box:
A. Set the vertical scale and reference level
B. Set the unit (dBVrms, Vrms, and dBm). When the unit
is dBm, the oscilloscope will automatically calculate
the dBm value based on the Ext Load value set in
area
C. Set the external load, which is used to calculate the
correct dBm result
D. Return to the previous menu
E. Set the center-span frequencies
F. Set the start-end frequencies
Unit
The unit of the vertical axis can be set to dBm, dBVrms, or Vrms. dBVrms and Vrms respectively
using either logarithmic or linear scaling. dBVrms is recommended to show larger dynamic ranges.
dBm is a power unit, the correct result can be obtained only if the value of Ext Load is set to be
consistent with the load impedance of the actual measured signal.
Vertical Control
Touch Ref Level to set the reference level of the FFT waveform by the universal knob or the virtual
keypad. It can also be set by the offset knob shared by Decode, Digital, Math, and Ref on the front
panel.
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Touch Scale to set the vertical scale of the FFT waveform by the universal knob or the virtual
keypad. It can also be set by the scale knob shared by Decode, Digital, Math, and Ref on the front
panel. The reference point for vertical scale scaling is the reference level.
Horizontal Control
Touch Center to set the center frequency by the universal knob or the virtual keypad.
Touch Span to set the frequency span with the center frequency as the center by the universal
knob or the virtual keypad.
Touch Start to set the start frequency by the universal knob or the virtual keypad.
Touch End to set the end frequency by the universal knob or the virtual keypad.
The relationship between Center, Span, Start, and End is:
Center = (Start + End)/2
Span = End – Start
FFT Tools
The SDS2000X HD provides two tools for the FFT waveform: Peaks and Markers. The peaks tool
can automatically search the qualified peak points and mark them on the FFT waveform. Up to 10
peaks are supported. Based on the peak tool, the markers tool can automatically search the qualified
harmonics, and users can control the position of each marker. Up to 8 markers are supported.
Touch Tools in the math dialog box to recall the FFT tools dialog box:
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When the FFT tool Peaks is selected, the dialog box is as follows:
A. Turn on or off the table. Turn on the table, the peaks
searched with the limit of Search Threshold and
Search Excursion will be displayed in a table
B. Turn on or off the display of peak frequency in the table
C. Sort peaks by amplitude or frequency
D. Set the search threshold. Only peaks larger than the limit
are shown
E. Set the difference between the peak value and the
minimum amplitude on both sides. The difference should
be greater than the search excursion
F. Return to the previous menu
When the FFT tool Markers is selected, the dialog box is as follows:
A. Control markers. Touch to control the display and
position of each marker
B. Marker on peaks. It will automatically mark the peak that
meets the conditions of Search Threshold and
Search Excursion
C. Marker on harmonics. It will automatically mark each
harmonic of the FFT waveform
D. Turn on or off the table
E. Turn on or off the frequency display
F. Turn on or off the delta display
G. Set the search threshold. Only peaks larger than the
peak limit can be judged as peaks
H. Set the difference between the peak value and the
minimum amplitude on both sides. The difference
should be greater than the search excursion, which can
be determined as the peak
I. Return to the previous menu
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Note: The FFT dialog box is longer than the display. Slide the dialog box area up and down by
gestures, or scroll the mouse wheel to the view non-displayed areas.
The following shows the peaks of the FFT waveform:
Measure the FFT waveform
Press the Cursors button on the front panel to turn on the cursor function, and then specify the
source as "Math". X1 and X2 cursors can be used to measure the frequency value at the cursor
position.
Only the maximum parameter of the FFT is supported in automatic measurement.
Note: DC components in the signal may show a large amplitude near 0 Hz. If your application does
not require measurement of the DC component, it is recommended to set the coupling mode of the
source channel to "AC".
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Formula Editor
Touch Formula Editor in the operation setting page to recall the editor:
A. Formula display text box
B. Text box operation area, which can clear and modify the entered formula
C. Special operators
D. Operation source. Cx represents analog trace, Zx represents zoomed trace and Fx
represents math trace
E. The keyboard area contains the basic arithmetic operators addition (+), subtraction (-),
multiplication (*), division (/)
F. Confirm button. After the formula is input, press the button to apply it
The following is an example of F1 = (C1 + C1) * C2 through the formula editor
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20 Reference
Data from analog channels or math can be saved to the reference locations
(REFA/REFB/REFC/REFD) in the built-in nonvolatile memory. The saved reference waveform can
be recalled to be compared with the current waveform.
A. Channel waveform
B. Reference waveform
C. Reference vertical and horizontal information display area
D. The reference dialog box, hidden in this figure
Press the Ref button on the front panel, or touch + in the descriptor box region and select
Ref to recall the ref dialog box.
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A. Select the location of the reference
(REFA/REFB/REFC/REFD)
B. Select the source (C1~C4 and MATH)
C. Enable/disable Display of the reference waveform
D. Set the label text of the reference trace.
E. Save the specified waveform in to the specified
location in
Adjust the Reference Waveform
Set the vertical position of the reference waveform by the offset knob on the front panel, and set the
vertical scale of the reference waveform by the scale knob.
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21 Search
The SDS2000X HD can search for the specified events in a frame. The location of the events is
displayed with white triangle indicators. In YT mode or Roll mode with the acquisition stopped, up to
1000 events are supported. In Roll mode with the acquisition running, the number of search events
is unlimited. The waveform can be zoomed in when the search function is enabled.
A. Search event indicator, marking the time point of an event
B. Total number of events marked on the display
C. The search dialog box, hidden in this example
In the stop state, the area shows the index of the current event/total number of events. The
current event is the one in the center of the display.
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Touch the menu Analysis > Search to recall the search
dialog box and turn on it.
Setup Menu
Select and set the search type in the Setup Menu . The SDS2000X HD provides five search
conditions: Edge, Slope, Pulse, Interval, and Runt.
Search Type Setup Description
Edge Slope: Rising, Falling, Either
Slope Slope: Rising, Falling
Limit Range setting is available
Pulse Polarity: Positive, Negative
Limit Range setting is available
Interval Slope: Rising, Falling
Limit Range setting is available
Runt Polarity: Positive, Negative
Limit Range setting is available
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Search setup is similar to the corresponding trigger type. See the sections “Edge Trigger”, “Slope
Trigger”, ”Pulse Trigger”, ”Interval Trigger” and ”Runt Trigger” for details.
Copy
The SDS2000X HD supports replication between search settings and trigger settings.
Copy from Trigger: Synchronize the current trigger settings to the search settings.
Copy to Trigger: Synchronize the current search settings to the trigger settings.
Cancel Copy: Cancel the last synchronization and restore the settings before it.
Note: When copying from the trigger, if the trigger type is not supported by Search, the operation is
invalid.
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22 Navigate
Touch the menu Analysis > Navigate to recall the navigate dialog box. The SDS2000X HD
provides three navigate types: Search Event, Time, and History Frame.
Navigate by Time
The oscilloscope automatically adjusts the trigger delay
according to the direction set by the user.
Touch Type in the navigate dialog box to select the
navigate type as “Time”. There are two ways to navigate by
time:
Touch the Time area to set the time value by the
universal knob or the virtual keypad.
Press the navigation buttons ◀，|| or ▶ on the menu to
play backward, stop, or play forward the waveform.
Press the ◀ or ▶ buttons multiple times to speed up the
playing. Three speed levels are supported: Low Speed,
Medium Speed, and High Speed.
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Navigate by Search Event
When the Search function is turned on and the acquisition is
stopped, Navigate is usable to find search events (see the
chapter "Search" for search function).
Touch Type in the navigate dialog box to select the
navigate type as “Search Event”.
Touch Event Num to set the event number by the universal
knob or the virtual keypad. Press the navigation buttons ◀ or ▶
on the front panel to go to the previous or next search event.
Touch Playing Mode to set the search event playing mode.
Touch Interval Time to set the playing interval by the
universal knob or the virtual keypad.
Touch the Event List Switch area to turn on or off the list. The list contains time labels for each
event. Touching a row in the list automatically jumps to the corresponding event. This operation is
equivalent to specifying an event in the Event Num area.
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Navigate by History Frame
When the history function is turned on, Navigate can be used to play
history frames (see the chapter "History" for details of the history
function).
Touch Type in the navigate dialog box to select the navigate type
as “History Frame”.
Touch Frame to set the frame number by the universal knob or the
virtual keypad. Press the navigation buttons
◀，
|| or
▶
on the menu to
play backward, stop, or play forward.
Touch Playing Mode to set the search event playing mode.
Touch Interval Time to set the playing interval by the universal knob
or the virtual keypad.
Touch Stop On Search Event to set the stop play condition: stop
when the event is searched. This setting is only valid when the search
function is on.
The following is an example of an occasional runt signal to demonstrate how to quickly locate and
find events of interest by using the combination of Search and Navigate:
The input signal is a 5 V periodic square
wave, in which every 200 ms there is a
dwarf pulse with a height of 1/3 of the
normal amplitude:
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First, set the trigger type to Runt to trigger on the dwarf pulse. See the section “Runt Trigger” for
details.
Then turn on the Search function and operate Copy from Trigger in the search dialog box so that
the oscilloscope searches for the dwarf pulses according to the same setting as the trigger.
Set the horizontal scale to 10 ms/div, then 9 markers with ~10 ms interval are shown on the display,
indicating that a total of 9 dwarf pulses were found in the full screen of 100 ms time range:
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Turn on the Zoom function to observe the full view of the frame and the detail of the third dwarf pulse
at the same time:
Press the Run/Stop button on the front panel to stop the acquisition, and then follow the steps
Navigate > Type to select “Search Event”. The following figure shows the first dwarf pulse. In
this example, the list is enabled and the time labels of a partial event are shown in the list.
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23 Mask Test
Overview
Users can create masks and define the rule used to evaluate Pass/Fail operations. An event violating
the rule is defined as a failure and a pulse can be generated from the "Aux Out" port on the back
panel. This is very useful to find and quantify anomalies in production tests or similar batch
measurements. When Pass/Fail is enabled, the signal output from the Aux Out is automatically
switched to Pass/Fail pulse.
A. Mask area in green. Any dot violating the rule is highlighted in red, instead of the normal
waveform color.
B. Pass/Fail information display area, including the count of passed frames, failed frames, total
frames, and the fail rate.
C. Dialog box
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Perform Analysis > Mask Test to open the Mask Test dialog box:
A. Turn on/off the test
B. Select the source（C1~C4）
C. Select the rule（All In, All Out, Any In, and Any Out）
D. Set the mask
E. Turn on/off the Pass/Fail operation. Turning off the operation
when the test is in progress will stop the test immediately,
and the counters in the information display area will stop.
Turning on the operation again re-starts the test and all the
counters are cleared. Pressing the Clear Sweeps button
on the front panel is equivalent.
F. Turn on/off the information display
G. Turn on/off “Stop on Fail”. When it is "on", the oscilloscope
stops the acquisition once it detects a failure
H. Turn on/off “Failure to History”. When it is "on", the failure
frame will be stored internally and can be viewed through the
history function
I. Turn on/off “Capture on Fail”. When it is "on", the failure
waveform is detected, and the screenshot with the failure
frame will be stored in the external U disk.
J. Turn on/off the sound prompt when a failure occurs.
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Mask Setup
Touch Mask Setup in the Mask Test dialog box to set the mask. There are two methods to create
a mask, one is by setting horizontal and vertical values, and the other is by drawing a polygon mask.
A. Create a mask automatically according to the
waveform
B. Create a custom mask using the Mask Editor tool
C. Load the mask
D. Return to the previous menu
23.2.1 Create Mask
The mask can be created based on an existing waveform trace.
A. Set the horizontal spacing of the mask around the
currently displayed trace. The units are parts of the
horizontal division setting.
B. Set the vertical spacing of the mask around the
currently displayed trace. The units are parts of the
vertical division setting.
C. Create the mask based on settings in and
D. Save the mask
E. Return to the previous menu
Set the values for Mask X and Mask Y (in divisions of display graticule), and then perform
Create Mask to generate the mask. The horizontal and vertical adjustment range is 0.08~4.00 div.
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X = 0.2 div, Y = 0.2 div X = 1 div, Y = 1 div
Saving and recalling mask files (*.msk) is similar to the operation of setup files, see the chapter
"Save/Recall" for details.
23.2.2 Mask Editor
The Mask Editor is a built-in tool that provides an approach to creating custom masks. Below is its
layout:
A. Menu bar
B. Coordinate of the latest touched point on the display
C. Mask edit area, which is equivalent to the grid area. In this example, a hexagon has been
created as a part of the mask
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D. Toolbar
E. Coordinate edit area. Set the X ordinate and Y ordinate by the virtual keypad and then touch
the “Input” button the perform the ordinate update
F. Display or hide the coordinates of the polygon vertices on the display
G. Exit the tool
Menu bar
There are 2 menus on the menu bar. The File menu includes ordinary file operations such as:
New: Create a new mask file
Open: Open an existed mask file
Save: Save the current mask file
Exit: Exit the Mask Editor tool
Note: The mask file created by the “Create Mask” cannot be recalled by the Mask Editor.
The contents of the Edit menu are equivalent to the Toolbar.
Toolbar
Draw:
Creates vertices of a polygon by touching the display or entering values in
coordinate edit area
Create Polygon:
Creates a polygon based on the drawn vertices by the operation Draw
Undo
Redo
Insert Point:
Inserts a vertex on a selected side
Edit Polygon:
Edits a polygon. Vertices, sides, and the polygon are all editable object
Delete Polygon:
Deletes selected polygon
To edit a vertex, side, or polygon object, first select it, and then move it by a dragging gesture or by
entering the desired value in coordinate edit area. For a side, the value is for its middle point. For
a polygon, the ordinate is for its geometric center.
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Select a vertex (point) Select a side (line segment)
Select a polygon
Pass/Fail Rule
The Pass/Fail rule is specified at the Type region in the Mask Test dialog box.
All In: All data points must be inside the mask to pass the test. Even a single point outside
the mask will cause a failure.
All Out: All data points must be outside the mask to pass the test. Even a single point inside
the mask will cause a failure.
Any In: Any data point inside the mask will be recognized as a pass. All data points outside
the mask will cause a failure.
Any Out: Any data point outside the mask will be recognized as a pass. All data points
inside the mask will cause a failure.
Operation
Touch Operation to start/stop the test. Stopping a test in progress and restarting the test will
clear the count of the passed frames, failed frames, total frames, and the fail rate. Pressing the
Clear Sweeps button on the front panel can also clear the count information.
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24 DVM
Overview
The DVM (Digital Voltage Meter) function can be used to measure parameters such as DC and AC
amplitudes. The SDS2000X HD measures the specified parameter of the input signal and can display
it in various formats, including Bar, Histogram, and Trend. DVM is asynchronous to the acquisition
system of the oscilloscope. Sources of DVM and Measurement can be different, and DVM can work
well even if the acquisition of the oscilloscope is stopped (indicated by a red-colored Run/Stop button).
A. Bar display area
B. Trend display area
C. Histogram display area
D. DVM dialog box
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Touch the menu Analysis > DVM to open the DVM dialog
box:
A. Turn on or off the DVM
B. Select the source (C1~C4)
C. Select the Mode: DC Mean, DC RMS, AC RMS,
Peak-Peak, and Amplitude
D. Turn on or off the Auto Range
E. Turn on or off the bar diagram
F. Turn on or off the histogram diagram
G. Turn on or off the trend plot
H. Turn on or off Hold. DVM stops acquisition in Hold
mode
I. Turn on the overload alarm, an alarm will sound when
the signal is out of range
Mode
DVM provides 5 modes. Touch mode in the DVM dialog box to open the mode selection window:
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DC Mean: Average of the data
DC RMS: Root mean square of the data at DC coupling
AC RMS: Root mean square of the data at AC coupling
Peak-Peak: Difference between maximum and minimum data value
Amplitude: Difference between top and base in a bimodal waveform. If not bimodal, the
difference between max and min.
Diagrams
After selecting the mode, users can touch the screen to open the state diagrams: bar, histogram, and
trend. The color of the data in the diagrams is consistent with the color of the source.
Bar
The bar diagram accurately displays the current measured value. Touch Bar in the DVM dialog
box to display it.
A. Mode
B. Current value
C. Bar corresponding to the current value
Histogram
A histogram visually indicates the probability distribution of the measured values. Touch histogram
in the DVM dialog box to display it.
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A. Mode
B. Histogram display area
C. Current value
D. The bin includes the maximum value and probability with which values fall into it
E. Statistics counts
F. Reset statistics
Trend
The trend diagram indicates the trend of the measured values over time. Touch trend in the DVM
dialog box to display it.
A. Mode
B. Trend display area
C. Extend the range of time. Touch it to expand the time range.
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D. Current value
E. Maximum value
F. Minimum value
G. Average value
H. Reset statistics
Press the Clear Sweeps button on the front panel to restart counting and statistics. Touch the
symbol in the histogram and trend display areas to restart statistics.
When all the 3 diagrams are closed, there is a simple information bar on the top-left of the waveform
display area to show the current value of the DVM:
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25 Counter
Overview
The counter is used to measure the frequency and period of a signal or count the events happening
within it. The counter is asynchronous to the acquisition system of the oscilloscope. It can work well
even if the acquisition of the oscilloscope is stopped (indicated by a red-colored Run/Stop button)
Touch the menu Analysis > Counter to open the counter dialog box:
A. Turn on or off Counter
B. Select the mode: frequency, period, and totalizer
C. Select the source (C1~C4)
D. Set the level of the counter
E. Turn on or off statistics
F. Clear and restart the statistics. Pressing the
Clear Sweeps button on the front panel has an
equivalent effect
Mode
See section “Mode” for details.
Statistics
When statistics are enabled, the counter will increment the data and display the statistics results on
the screen.
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Value – The latest count
Mean – The average of all historical counts
Min – The minimum of all historical counts
Max – The maximum of all historical counts
Stdv – The standard deviation of all historical counts, used to judge the distribution of historical count
parameters
Count – Number of counts obtained
Level – Counter level
Press the Clear Sweeps button or touch Reset Statistics in the measure dialog box to clear
and restart statistics.
Mode
The counter provides 3 modes. Touch Mode in the counter dialog box to open the mode selection
window:
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Frequency: Average frequency over a set period
Period: The reciprocal of the average frequency over a set period
Totalizer: Cumulative count
When the mode is set to totalizer, the edge of the counting source needs to be set. When the counting
gate is turned on, the counter can count only when the gate-source meets the specified conditions.
Touch Gate Setting to recall the gate setting dialog box:
A. Turn on or off the gate
B. Select the gate type: Level or After Edge
C. Gate source display area. C1 and C2 are gate
sources of each other, C3 and C4 are gate sources
of each other
D. When the gate type is level, set the polarity
(Positive or Negative) of the gate source. When the
gate type is edge, set the slope (Rising or Falling
edge) of the gate source.
E. Set the gate level
F. Return to the previous menu
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26 Histogram
Overview
The SDS2000X HD supports waveform histograms for observing probability distributions of the
waveform in the specified region. The statistics can be performed in both horizontal and vertical
directions. The histogram continues to update as long as the acquisition is active.
Touch Analysis > Histogram to recall Histogram dialog box:
A. Turn on or off the histogram
B. Select the source of the histogram: C1~C4. When
Zoom is turned on, the source selection is
automatically switched to Z1-Z4 (Z = Zoom waveform)
C. Set the type of histogram: Horizontal, Vertical or Both
D. Set the region of the histogram. The setting range is
within the waveform area.
E. Turn on or off histogram statistics
F. Clear and restart the histogram statistics. Pressing the
Clear Sweeps button on the front panel has an
equivalent effect
Type
Horizontal – Displays the histogram in the horizontal direction. The oscilloscope counts waveform
data falling into every horizontal (time) bin defined by the histogram region and shows the
histogram at the bottom of the waveform area.
Vertical – Displays histogram in the vertical direction. The oscilloscope counts waveform data
falling into every vertical (amplitude) bin defined by the histogram region and shows the histogram
at the left of the waveform area.
Both – Displays both horizontal and vertical histograms
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Horizontal Vertical
Both
Region Setting
See section “Region Setting” for details.
Histogram Statistics
When histogram statistics is turned on, the oscilloscope will show the statistical parameters of the
histogram on the display.
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Sum – Total samples falling in the histogram region
Peak – Samples in the highest bin
Max – Maximum value of the samples
Min – Minimum value of the samples
Pk-Pk – Maximum - Minimum
Mean – Mathematical expectation (or average) value of the samples
Median – The value separating the higher half from the lower half of the histogram
Mode – The value that appears most often
Bin Width – The width of each bin
Sigma – Standard deviation of the samples
Press the Clear Sweeps button or touch Reset Histogram in the histogram dialog box to clear
and restart the statistics.
Region Setting
Histogram region can be created and moved directly by gesture or by setting Histogram >
Region Setting in the dialog box. The border color of the histogram region is consistent with the
color of the specified source.
Gesture
Touch any position of the waveform area and draw a rectangular box, as follow:
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When the finger moves out of the touch screen, a menu pops up. Select "Histogram" in the menu:
After the region is created, it can be moved by dragging gesture.
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Dialog Box
Touch Histogram > Region Setting to recall the dialog box.
A. Set the left border of the histogram region
B. Set the right border of the histogram region
C. Set the top border of the histogram region
D. Set the bottom border of the histogram region
E. Return to the previous menu
Touch the area above to set the value by the universal knob
or the virtual keypad.
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27 Power Analysis
Overview
The SDS2000X HD supports a power analysis function. Power analysis can help users quickly and
easily analyze and debug switching power supply design. It automatically calculates Power Quality,
Current Harmonics, Inrush Current, Switching Loss, Slew Rate, Modulation, Turn On/Turn Off,
Transient Response, PSRR, Power Efficiency, Output Ripple, etc. Full use of the Power analysis
requires a differential voltage probe like the SIGLENT DPB series, a current probe like the SIGLENT
CP series, the SIGLENT DF2001A deskew fixture, and the power analysis activation license (part
number SDS2000HD-PA). Install the software option part number SDS2000HD-PA to permanently
enable the power analysis function.
Touch Analysis > Power Analysis to recall power analysis dialog box:
A. Enable/Disable the test
B. Select the analysis item (Power Quality,
Current Harmonics, Inrush Current, Switching
Loss, Slew Rate, Modulation, Turn On/Turn
Off, Transient Response, PSRR, Power
Efficiency, Output Ripple, etc.)
C. Turn on/off the state of the analysis item
Power Quality
The specific measurement parameters of power quality analysis include active power, apparent power,
reactive power, power factor, power phase angle, voltage effective value, current effective value,
voltage crest factor, and current crest factor of power input of a switching power supply.
Type
Power— Includes all the items to describe energy flow in a system: Active power, reactive power,
apparent power, power factor, and power phase angle.
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P: Active Power =
=
S: Apparent Power = Vrms * Irms
Q: Reactive Power =
Apparent Power
2
Active Power
2
: Power Phase Angle: Phase difference between voltage and current
cos : Power Factor, which is the ratio of active power and apparent power.
Voltage Crest -- Voltage parameters of the power input include voltage crest, voltage effective value,
and voltage crest factor.
Vrms =
2
=
V_Crest = Vpeak / Vrms
Current Crest -- Current parameters of the power input include current crest, current effective value,
and current crest factor.
Irms =
2
=
I_Crest = Ipeak / Irms
Signal Settings
Touch Signal to recall signal settings dialog box:
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A. Set the input voltage source
B. Set the input current source
C. Set the periods displayed
D. View the connection guide
E. Return to the previous menu
Connection Guide
Touch Signal > Connection Guide to recall the connection guide of power quality, as shown in
the figure below. Please follow the instructions in this figure for correct connections. Touch the icon
on the top right of the guide to close.
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Current Harmonics
Current harmonics are used to analyze the input current harmonics. An FFT of the selected channel
is performed to get the harmonic components. The signal settings and connection guide are the same
as the power quality test.
Configuration
Touch Config to recall the configuration dialog box:
A. Set the frequency of the line (Auto, 50 Hz,
60 Hz, or 400 Hz)
B. Set the standard type (IEC61000-3-2 A,
IEC61000-3-2 B, IEC61000-3-2 C or
IEC61000-3-2 D)
C. Set the display type (Off, Bar Chart, or
Table)
D. Return to the previous menu
Standard
IEC 61000-3-2 is an international standard that limits mains voltage distortion by prescribing the
maximum value for harmonic currents from the second harmonic up to and including the 40th
harmonic current. There are 4 different classes in the EN 61000-3-2 that have different limit values:
Class A: Balanced 3-phase equipment, household appliances excluding equipment identified as
class D, tools, excluding portable tools, dimmers for incandescent lamps, audio equipment, and
all other equipment, except that stated in one of the following classes.
Class B: Portable tools, arc welding equipment which is not professional equipment
Class C: Lighting equipment.
Class D: PC, PC monitors, radio, or TV receivers. Input power P ≤ 600 W.I
Parameter Description
For the first 40 harmonics, the following values are displayed:
Measured Value (RMS) -- The measured value displayed in the unit specified by the harmonic unit
parameter.
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Limit Value (RMS) -- Limits specified by the selected standard
Margin (%) --The margin specified by selected standard parameters. The margin value is (standard
value - measured value) / standard value * 100%
Pass/Fail State -- Determine whether the measured value is passed or failed according to the
selected standard. The rows in the table or the bars in the bar chart are rendered in different colors
based on the pass / fail state. When the value is greater than 85% of the limit but less than 100% of
the limit, it is defined as a critical state.
Total Harmonic Distortion（
THD）=100%
X
+X
3
++X
X
， where X
n
is the nth harmonic, and X
1
is
the basic component.
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Inrush Current
A large current far greater than the stable current may flow through at the moment of switching on a
power supply. The large current is called the inrush current. The current waveform when switching on
is shown in the figure below:
Signal Settings
Touch Signal to recall signal settings dialog box:
A. Set the input voltage source
B. Set the input current source
C. Set the expected current value, the range is 100 mA
~ 500 A. The oscilloscope will set the trigger level to
expected current/20 and the vertical scale of the
current channel to expected current/3.
D. Set the maximum effective input voltage (Vrms), the
range is 1 V ~ 1 kV. The oscilloscope will set the
vertical scale of the voltage channel to maximum
input voltage/6
E. View the connection guide
F. Return to the previous menu
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Switching Loss
Switch loss analysis can be used to calculate the power dissipated in the switching period.
Deskew Calibration
A relatively small skew can cause a large measurement error of switching loss, especially during the
on phase when the voltage is close to zero and the non-on phase when the current is close to zero.
This is a typical oscilloscope dynamic range limitation when trying to measure weak voltage and (or)
current in the presence of relatively large switching voltage and (or) current.
To correct the skew between the oscilloscope channels or probes, the deskew procedure should be
performed once initially, and re-run when any part of the hardware setup changes (for example, a
different probe, different oscilloscope channel, etc.) or when the ambient temperature changes. The
deskew procedures by using the DF2001A deskew fixture are as follows:
A. Demagnetize and zero-adjust the current probe
B. Set up connections to the DF2001A deskew fixture
Small Loop Large Loop
Available current
probes
CP4020 (100 kHz,20 Arms)
CP4050 (1 MHz,50 Arms)
CP4070 (150 kHz,70 Arms)
CP4070A (300 kHz,70 Arms)
CP5030 (50 MHz,30 Arms)
CP5030 (100 MHz,30 Arms)
CP5150 (12 MHz,150 Arms)
CP5500 (5 MHz,500 Arms)
High-voltage
differential probe
sense points
J7: signal terminal
J6: earth terminal
J3: signal terminal
J4: earth terminal
a. Connect D+ and D- of the high-voltage differential probe to J7 and J6
b. Connect the current probe to the loop with the direction of the arrow indicating the
direction of the current flow
c. Make sure the switch S1 on the deskew fixture is set to the appropriate side of the
fixture (either “small loop” or “large loop”)
d. Connect the deskew fixture to a USB port on your oscilloscope or a PC using a USB
cable. The USB port supplies power to the deskew fixture
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C. Connect the voltage and current probes to the oscilloscope input channel
D. Touch Signal to enter the signal setting menu. Select the corresponding input channel,
and then touch Auto Deskew to perform the calibration. When the process completes,
a message will pop up indicating whether the deskew operation was successful or not.
Before deskew calibration After deskew calibration
Configuration
Touch Config to recall the configuration dialog box:
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A. Set the voltage reference, i.e. the switch level at the edge
of the input switch. This value is a percentage of the
maximum switching voltage. Adjusting the value to ignore
background noise. This value is used to determine the
threshold hysteresis of the switch edge
B. Set the current reference, i.e. the switch level at the
beginning of the input switch edge. This value is the
percentage of the maximum switching current. This value
can be adjusted to ignore background noise or invalid
offset that is difficult to eliminate in the current probe. This
value is used to determine the threshold hysteresis of the
switch edge
C. Set the conduction type (Waveform, Rds(on) or Vce(sat))
D. Set Rds(on) resistance
E. Set Vce voltage
F. Return to the previous menu
Conduction Type
Waveform -- The power waveform uses the original data, and the calculation formula is P = V * I，E
= P * T.
Rds (on) -- In the on area (where the voltage level is lower than the voltage reference (adjustable)),
the power calculation formula is P = I
2
* Rds (on). In the off area (where the current level is lower than
the current reference (adjustable)), the power calculation formula is P = 0 watt.
Vce (sat) -- In the on area (where the voltage level is lower than the voltage reference (adjustable)),
the power calculation formula is P = Vce (sat) * I. In the off area (where the current level is lower than
the current reference (adjustable)), the power calculation formula is P = 0 watt.
Connection Guide
Touch Signal > Connection Guide to recall the connection guide of switching loss, as shown in
the figure below. Please follow the instructions in this figure for connection. Touch the icon on the top
right of the guide to close.
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Slew Rate
The slew rate measures the change rate of voltage or current during switching.
Connection Guide
Touch Signal > Connection Guide to recall the connection guide of slew rate, as shown in the
figure below. Please follow the instructions in this figure for connection. Touch the icon on the top
right of the guide to close.
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Modulation
Modulation analysis measures the control pulse signal of the switching device (MOSFET) and
observes the pulse width, duty, period, frequency, and other trends of the control pulse signal in
response to different events.
Connection Guide
Touch Signal > Connection Guide to recall the connection guide of modulation, as shown in
the figure below. Please follow the instructions in this figure for connection. Touch the icon on the top
right of the guide to close.
Output Ripple
Power supply ripple is an important parameter to evaluate DC power supply, which represents the
quality of output DC voltage. Ripple analysis can measure the current value, average value, minimum
value, maximum value, standard deviation, and count of the power supply output ripple.
Connection Guide
Touch Signal > Connection Guide to recall the connection guide of output ripple, as shown in
the figure below. Please follow the instructions in this figure for connection. Touch the icon on the top
right of the guide to close.
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Turn On/Turn Off
Turn-on analysis determines the time taken for the power supply to reach 90% of its steady-state
output. Turn-off analysis determines the time taken for the power supply to fall to 10% of its maximum
output voltage.
Signal Settings
Touch Signal to recall signal settings dialog box:
A. Set the input voltage source
B. Set the output voltage source
C. Set the input type (AC or DC)
D. Set the duration, the range is 5 ns ~ 20 s. The oscilloscope
will set the timebase according to the value (duration / 10)
E. Set the maximum effective input voltage Vrms, the range is
1 V ~ 1 kV. The oscilloscope will set the vertical scale of
the voltage channel to maximum input voltage / 7 and the
trigger level to maximum input voltage / 10.
F. Set the stable output voltage value, the range is -30 V ~ 30
V. The oscilloscope will set the vertical scale of the output
voltage channel to stable output voltage / 6
G. View the connection guide
H. Return to the previous menu
Testing Conditions
Turn On -- Determines the time taken for the power to reach a certain percentage of its steady-state
output. The turning on time is between T2 and T1, where:
T1 = When the input voltage first rises to a certain percentage (usually 10%) of its maximum amplitude
T2 = When the output DC voltage rises to a certain percentage (usually 90%) of its maximum
amplitude
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Turn Off -- Determines the time it has taken for the power supply to be turned off to fall to a certain
percentage of its maximum output voltage. The turning off time is between T2 and T1, where:
T1 = When the input voltage finally falls to a certain percentage (usually 10%) of its maximum
amplitude
T2 = When the output DC voltage finally falls to a certain percentage (usually 10%) of its maximum
amplitude
Connection Guide
Touch Signal > Connection Guide to recall the connection guide of turn on/turn off, as shown
in the figure below. Please follow the instructions in this figure for connection. Touch the icon on the
top right of the guide to close.
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Transient Response
Transient response analysis can determine the response speed of the output voltage of the power
supply to the change of the output load. This time starts from the first time that the output voltage exits
the stable band and ends at the last time that the output voltage enters the stable band.
Signal Settings
Touch Signal to recall signal settings dialog box:
A. Set the output voltage source
B. Set the output current source
C. Set the duration. The oscilloscope will set the
appropriate time base according to the duration
D. Set the stable output voltage, i.e. the expected output
DC voltage of the power supply in a stable state
E. Set the overshoot percentage of output voltage, which
can be used to determine the stable band value of
transient response and adjust the vertical scale of the
oscilloscope
F. View the connection guide
G. Return to the previous menu
Configuration
Touch Config to recall the configuration dialog box:
A. Set the input low current value. This is the expected
low current value before or after the load change
B. Set the input high current value. This is the expected
high current value before or after the load change
C. Return to the previous menu
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Note: The low and high current values are used to calculate the trigger level and adjust the
oscilloscope vertical scale. After the load changes, the current value changes from low to high (or
from high to low), and the oscilloscope triggers and performs to measure the transient response
stability time.
Connection Guide
Touch Signal > Connection Guide to recall the connection guide of transient response, as
shown in the figure below. Please follow the instructions in this figure for connection. Touch the icon
on the top right of the guide to close.
PSRR
The power supply rejection ratio (PSRR) test is used to determine how the regulator suppresses
ripple noise in different frequency ranges. The oscilloscope controls the arbitrary waveform/function
generator to output a sweep signal, which is used to introduce ripple into the DC voltage transmitted
to the voltage regulator. Measure the AC RMS ratio of input to output, and plot the relationship
between the ratio and frequency. The background noise of the oscilloscope is higher than that of the
network analyzer, and the sensitivity is lower than that of the network analyzer, so the PSRR
measured by the oscilloscope is difficult to exceed -60 dB. The PSRR test is generally acceptable
for sampling the overall PSRR behavior of the power supply under test.
The configuration of PSRR is the same as that of the Bode plot, see the chapter "Bode Plot" for
details.
Connection Guide
Touch Signal > Connection Guide to recall the connection guide of PSRR, as shown in the
figure below. Please follow the instructions in this figure for connection. Touch the icon on the top
right of the guide to close.
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Power Efficiency
Power efficiency analysis can test the overall efficiency of the power supply by measuring the output
power and input power. This analysis is only supported on 4-channel models because all of the input
voltage, input current, output voltage, and output current are necessary for the measurement.
Connection Guide
Touch Signal > Connection Guide to recall the connection guide of power efficiency, as shown
in the figure below. Please follow the instructions in this figure for connection. Touch the icon on the
top right of the guide to close.
SOA
The safe operating area (SOA) of MOSFETs defines the voltage, current, and power consumption
conditions over which the device can be expected to operate without self-damage. The oscilloscope
can automatically generate the SOA according to the Voltage Limit , Current Limit , and
Power Limit parameters set in the Config menu, and judge if the stress on the MOSFET is
beyond the SOA or not. This helps the designers to quickly find a problem or latent risk in the circuit.
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Connection Guide
Touch Signal > Connection Guide to recall the connection guide of power efficiency, as shown
in the figure below. Please follow the instructions in this figure for connection. Touch the icon on the
top right of the guide to close.
Note: Perform a Deskew operation between the voltage and current input channels before the test.
See section “Switching Loss” for more details on deskewing.
The test steps are as followed:
1. In the Input Setup menu, assign correct channels to Input Voltage and Input Current .
Set Duration as the expected observed duration, then the oscilloscope will automatically set
the timebase according to it.
2. In the Config menu set Voltage Limit , Current Limit , and Power Limit parameters
according to the datasheet of the MOSFET device under test, then the oscilloscope will
automatically generate the SOA and the vertical scale of the Input Voltage and Input Current
channels according to them.
3. Turn on Test State . The oscilloscope will begin to acquire the voltage and current waveforms,
and display the SOA measurement, showing if the measured stresses are in the SOA or not.
4. Users can adjust horizontal, vertical, and trigger settings during the test for best observation.
Below is an example of testing the power-up stresses on a MOSFET and judging if the stresses are
safe for the MOSFET using the SOA:
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Voltage and current waveforms on the MOSFET at power-up
SOA, in which the mask is created according to the voltage limit, current limit, and power
limit. The result shows “Pass” because all the stresses are within the mask.
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28 Bode Plot
Overview
The SDS2000X HD supports an automatic Bode plot function. This function provides a frequency
response curve of the device-under-test as well as the interface for output sweep parameter control
and data display settings. At this time, either the SIGLENT SAG1021I arbitrary waveform generator
or one of a SIGLENT SDG series arbitrary function generators are supported. During the sweep, the
oscilloscope configures the generator output frequency and amplitude and then compares the input
signal to the output of the DUT. Gain (G) and phase (P) are measured at each frequency and plotted
on the frequency response Bode plot. When the loop response analysis is complete, you can move
the markers on the chart to see the gain and phase values measured at each frequency point. You
can also adjust the scale and offset settings for the amplitude and phase plots.
Touch Analysis > Bode Plot to recall Bode plot dialog box:
A. Turn on/off the Bode plot
B. Configure the Bode plot (DUT, AWG connection, sweep
parameters)
C. Turn on/off the operation
D. Set display parameters, including coordinate axis, trace
visibility, and cursors
E. Data list. Open the data list of the Bode plot to view the
curve data, save the data results to a U-disk or recall it
from a U-disk
F. Set the measurement parameters. Parameter
measurement of scanning curve includes upper cut-off
frequency (UF), lower cut-off frequency (LF), bandwidth
(BW), gain margin (GM), and phase margin (PM)
G. Quickly print the specified Bode Plot waveform area to the
storage
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Configuration
28.2.1 Connection
A. DUT input and output channels
B. Channel gain. When it is set to Auto, the oscilloscope will automatically adapt the vertical
scale according to the signal amplitude; when it is set to Hold, it will always keep the
vertical scale before the test operation
C. Arbitrary waveform generator connection settings. Touch Interface to select the
connection type. When selecting LAN, it needs to Set IP and Save it. Touch Test
to confirm whether the arbitrary waveform generator is connected correctly.
28.2.2 Sweep
Touch Sweep Type to select the sweep type. There are two types: Simple and variable level.
A. Set the sweep type
B. Set the sweep as Continue or Single
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C. Set the sweep frequency. The frequency mode can be linear or decade. When it is set to
linear, the corresponding center frequency and span frequency need to be set; when it is
set to a decade, the corresponding start frequency and stop frequency need to be set
D. Set the number of sweep points. The larger the number of points, the higher the sweep
resolution
E. Set the amplitude of the sweep signal
F. Set the offset of the sweep signal
G. Set the signal amplitude unit. When it is set to dB, reference level and load need to be set
H. Set the load
A. Set the sweep type to Vari-Level
B. Select a profile. Up to 4 profiles can be edited
C. Set the frequency mode
D. Set the number of sweep points
E. Set the offset of the sweep signal
F. Set the signal amplitude unit. When it is set to dB, reference level and load need to be set
G. Variable level signal display area
H. Touch Edit to turn on the profile editor
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Touch Nodes to set the signal node number through the universal knob, or touch ▲ to increase
the nodes and ▼ to decrease.
Touch the cell in the table area to set the frequency and amplitude of the corresponding node. Touch
to activate the cell, adjust the value through the universal knob, or touch the cell again to call up the
virtual keypad for setting.
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Display
Bode plot display settings include amplitude, phase, cursors, trace visibility and waveform type.
Amplitude
Set the amplitude coordinate axis of the Bode plot. Touch Display > Amplitude to recall the
amplitude setting dialog box:
A. Set the reference position to center or top
B. Set the scale of the amplitude coordinate axis
C. Set the reference level, the max value of the amplitude
coordinate axis
D. Set the amplitude mode. Set to Vout to display the amplitude
value of the output signal; set to Vout/Vin to display the
amplitude ratio of the output signal to the input signal
E. When the mode is Vout, it needs to set the unit (Vpp, Vrms,
dBV, dBu, dBm, or Arbitrary dB); when the mode is Vout/Vin,
it needs to set the amplitude axis type (Linear or
Logarithmic).
F. Auto-Set. According to the output signal amplitude curve, the
oscilloscope automatically sets the scale and reference level
G. Return to the previous menu
Phase
Set the phase coordinate axis of the Bode plot. Touch Display > Phase to recall the phase
setting dialog box:
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A. Set the reference position to center or top
B. Set the scale of the phase coordinate axis
C. Set the reference level, the max value of the phase
coordinate axis
D. Set the phase unit (Degree or Rad)
E. Auto-Set. According to the output signal phase curve,
the oscilloscope automatically sets the scale and
reference level
F. Return to the previous menu
Cursors
SDS2000X HD can use the cursor to measure the Bode plot curve. The cursor of the Bode plot is
similar to the ordinary cursor, see the chapter "Cursors" for details. Touch Display > Cursors to
recall the cursor setting dialog box.
A. Turn on/off the cursors of the Bode plot
B. Set the cursors type (X or Y)
C. Specify the cursor and set the position (by gestures,
universal knob, or virtual keypad)
D. Set the source 1
E. Set the source 2
F. Return to the previous menu
Trace Visibility
When multiple output signals are connected, the Bode plot interface will display the amplitude and
phase curves of all output signals at the same time. Users can turn on/off other scanning curves to
observe the details of specific curves. Touch Display > Trace Visibility to recall the setting
dialog box.
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Data Analysis
With the data list, cursor measurement, and automatic measurement functions, the Bode plot curve
can be analyzed in detail. The data list provides the information of each scanning point. The cursors
can be used to flexibly measure the change of each position of the curve. The automatic measurement
function can be used to measure the five parameters of the Bode plot curve: upper cut-off frequency
(UF), lower cut-off frequency (LF), bandwidth (BW), gain margin (GM), phase margin (PM).
A. Data list display area
B. Cursors
C. Data point location line
D. Cursor information display area
E. Measurement parameters display area
F. Bode plot dialog box
Data List
Touch Data to recall the data setting dialog box:
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A. Turn on/off the data list
B. Set the selected row in the list. Adjust the
universal knob to set, or directly touch the list
display area to select a specific line.
C. Set the data source
D. Save/Recall the data. Saving and recalling the
Bode plot data (*.csv) is similar to the operation
of setup files, see the chapter "Save/Recall" for
details
E. Return to the previous menu
Measure
Touch Measure to recall the measure setting dialog box:
A. Set the position of measurement items, and support 5 measurement items at most
B. Set the measurement source
C. Measurement parameter area. Touch each parameter area to activate the measurement
parameter. In the figure above, "UF" is activated.
D. Clear all measurements
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E. Clear the current measurement
F. Close the measurement configuration window
For example, to add UF measurements for C2 and GM measurements for C3, follow the steps below:
Measure > Position > Source > UF
Measure > Position > Source > GM
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29 Display
Display settings include display type of waveform, color, persistence, grid type, trace brightness,
graticule brightness, etc.
Touch the menu Display > Menu to recall the display dialog box.
A. Switch the waveform display type to Vectors (line display)
or Dots
B. Enable/disable color grading
C. Set persistence
D. Clear display. The operation clears all waveforms
displaying on the screen and clears persist
E. Set menu auto-hide time
F. Set the menu style to Embedded or Floating. When set to
Embedded, the grid area will be compressed horizontally
to display the complete waveform when the dialog box is
displayed. When set to Floating, it will directly cover part
of the grid area when the dialog box is displayed
G. Select the grid type (Full Grid, Light Grid, and No Grid)
H. Set the trace intensity (0~100%)
I. Set the backlight (0~100%)
J. Set the graticule brightness (0~100%)
K. Set the LED brightness (10~100%)
L. Customize the colors of waveforms
M. Display the axis labels
Display Type
There is no difference between the vector and dot display types when the number of samples of a
frame is greater than 1000. When the sample number is below 1000, there are some differences.
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Vectors: The samples are connected by lines (i.e. interpolated) and displayed. The interpolation
methods include linear interpolation and sin(x)/x interpolation. See the section of "Acquisition
Setup" for details of interpolation.
Dots: Displays the raw samples directly.
Vector Display
Dot Display
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Note: In the Run state, due to the high waveform update rate of the oscilloscope, the waveform
displayed is the superposition of multiple frames. Therefore, what is seen using the dots display is
not the discrete sampling points, but the display effect similar to equivalent sampling. Stop the
acquisition to view the original samples of each frame separately.
Dots display in Run state
Color Grade
Color grade uses color temperature to map the probability of the waveforms. The greater the
probability that the waveform appears in a pixel, the warmer the color of the pixel. The smaller
probability, the colder the color temperature of that pixel.
The picture below shows the change of color from cold to warm.
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Color grade On Color grade Off
Set Persist
With persistence, the oscilloscope updates the display with new acquisitions but does not erase the
results of previous acquisitions in the specified period. All previous acquisitions are displayed with
reduced intensity. New acquisitions are shown in their normal color with normal intensity. In
combination with SDS2000X HD's high waveform update rate and persist function, in some cases
anomalies in the waveform can be found in a short time without complex trigger settings to improve
test efficiency. Below is an example to display glitches in a data sequence with infinite persistence.
When the display dialog box and persist are off, touch Display > Presistencet can quickly turn
on persist.
Touch Persist in the display dialog box to set the persistence time.
Off: Turn off persist.
Variable persist time (100ms, 200ms, 500ms, 1s, 5s, 10s, 30s): Choose different persist
times. The oscilloscope updates with the newly acquired waveform display. Acquired
waveforms will be cleared after the corresponding time has expired.
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Infinite: Select “Infinite”, previous acquisitions will never be erased until a Clear Display
or Clear Sweeps operation is performed.
Set Grid
Full Grid: Display 8*10 grid
Light Grid: Display 2*2 grid
No Grid: Display without grid
Full Grid
Light Grid
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No Grid
Color Setting
The color setting supports user-defined trace colors. Touch the color rectangle box to set in the pop-
up palette page. Touch the Default area to restore the default color for all channels.
Select a color directly on the palette and preview its hue, saturation, light, and RGB values or directly
modify the color parameters to customize the color. After the change, touch OK to confirm.
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Axis Label Setting
Turn on the axis label, the horizontal axis label will be displayed at the bottom of the grid, and the
vertical axis label will be displayed at the left of the grid. There are two display modes of axis: moving
and fixed.
Moving mode: When moving the waveform, the position of the axes moves with the waveform,
while the coordinates remain fixed.
Fixed mode: The position of the axes remain fixed, while the coordinates update as the
waveform is moving.
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Moving mode
Fixed mode
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30 Arbitrary Waveform Generator
Overview
The SDS2000X HD supports a built-in arbitrary waveform/function generation when activated using
option SDS2000HD-FG.
The AWG functions include:
6 basic waveforms: Sine, Square, Ramp, Pulse, Noise, and DC
45 built-in arbitrary waveforms
Output frequency up to 25 MHz
-3 V ~ +3 V output amplitude range
Refer to the datasheet for the detailed specifications of the AWG.
Press the WaveGen button on the front panel, or touch the menu Utility > Wave Gen to
recall the dialog box.
A. Turn on/off the output of AWG
B. Select the waveform type (Sine, Square,
Ramp, Pulse, Noise, DC, and Arb)
C. Set the frequency
D. Set the amplitude
E. Set the offset
F. Other AWG settings: Output load, overvoltage
protection, and so on.
G. System information and firmware upgrade
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Output
For safety, pressing the Wave Gen button does not automatically turn on the output of AWG. To
turn on the output, touch Output in the AWG dialog box after pressing Wave Gen . When the
output is enabled, the Wave Gen button lights up.
Wave Type
The AWG function provides six standard waveforms and multiple arbitrary waveforms. The standard
waveforms are Sine, Square, Ramp, Pulse, Noise, and DC.
The following table shows all waveform types and corresponding parameters.
Wave Type
Parameters
Sine Frequency, Amplitude, Offset
Square Frequency, Amplitude, Offset, Duty
Ramp Frequency, Amplitude, Offset, Symmetry
Pulse Frequency, Amplitude, Offset, Duty
DC Offset
Noise Stdev, Mean
Arb Frequency, Amplitude, Offset, Arb Type
The Arbitrary waveforms consist of two types: built-in waveforms and stored waveforms. Touch
Arb Type in the AWG dialog box, and select the arbitrary in the pop-up window:
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There are 6 tabs in the window. Under each tab, a catalog of waveforms is listed. Built-in waveforms
are stored in Common, Math, Engine, Window, and Trigo. Stored waveforms are located in the Stored
menu.
Users can edit arbitrary waveforms using SIGLENT EasyWaveX PC software, send the stored
waveforms to the instrument through the remote interface, or import the stored waveforms through a
U disk.
Other Setting
Touch Setting in the AWG dialog box to recall the "Other
Setting" dialog box:
A. Select the output load
B. Turn on/off the OVP (Over Voltage Protection)
C. Turn on/off the sync output. Only supported for
external SAG1021I function/arbitrary waveform
generator module.
D. Do zero adjust
E. Set to default
F. Return to the previous menu
Output Load
The selected output load value must match the load impedance. Otherwise, the amplitude and offset
of the output waveform of AWG will be incorrect.
OVP
When OVP is enabled, the output will be turned off automatically once the protection condition is met.
The protection condition is when the absolute value on the output port is higher than 4 V ± 0.5 V. At
the same time, a warning message is displayed.
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Sync Output
When the Sync Output is turned on, the Aux In/Out port of AWG outputs a CMOS signal with the
same frequency as the basic waveform (except Noise and DC) and arbitrary waveform. The maximum
supported frequency is 10 MHz.
Zero Adjust
The output zero error of the AWG can be calibrated by using auto mode or manual mode. The
object of the Zero Adjust is: when AWG outputs 0 V DC signal, the measured mean value of the
corresponding channel is within ± 1mV.
Auto Steps: In this mode, the adjustment can only be performed with CH1 of the oscilloscope.
Connect the output of AWG to CH1 of the oscilloscope, press Auto , and the AWG will start
to automatically adjust. The scope will display “Zero adjust completed!” when the adjustment is
done.
Manual Steps: The AWG can be manually calibrated through any channel on the oscilloscope.
Take CH2 as an example:
1. Connect the output of AWG to CH2, open CH2, set it to DC coupling, turn on the
bandwidth limit, and set the probe attenuation to 1X.
2. Set the vertical scale of CH2 to a small scale such as 1 mV/div. Turn on Measure and set
the parameter to the Mean of CH2.
3. Press Manual and rotate the universal knob to adjust the compensation value, until the
mean value of CH2 is within ±1 mV, and then press Save .
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System
Device Info – Includes Model, Serial Number, Firmware Version, and Hardware Version of the AWG
module.
Upgrade
The firmware here refers to the firmware of the SAG1021I module. The SDS2000X HD supports
firmware and configuration file upgrades for the SAG1021I via a U disk. Follow the steps below:
1. Copy the upgrade file (*.ADS) to the U disk.
2. Insert the U disk to one of the USB host ports of the oscilloscope.
3. Touch Browse to select the path of the upgrade file. See the chapter "Save/Recall" for
the detailed operation.
4. Touch Upgrade to start the upgrade progress. A progress bar shows the percentage
finished.
5. After the upgrade, the SAG1021I will be removed from the system, and the oscilloscope
prompts "Upgrade completed. Please reconnect the AWG device."
6. Enter the System dialog box again to check if the upgraded hardware version number
is consistent with the target version.
Warning: Don't cut off the power during the upgrade！
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31 Save/Recall
The SDS2000X HD supports saving setups, reference waveforms, screenshots, and waveform data
files to internal storage, external USB storage devices (e.g. U disk), or network storage. Saved
setups and reference waveforms can be recalled as needed.
For details of network storage, refer to the section “Network Storage”.
Save Type
SDS2000X HD supports save types: Setup, Reference, Image (*.bmp/*.jpg/*.png), Waveform Data
(binary/CSV/MatLab), and FileConverter Tool. It also supports saving the current setup as the default
setting. Here are brief descriptions of save types:
Setup
The default save type of the oscilloscope. The setup is saved with the *.xml file extension.
Reference
The reference waveform data are saved with the *.ref file extension. The saved file contains the
reference waveform data and its setup information such as the vertical scale, vertical position, and
timebase.
BMP
Saves the screenshot in *.bmp format.
JPG
Saves the screenshot in *.jpg format.
PNG
Saves the screenshot in *.png format.
Binary Data
Saves the waveform data in binary (*.bin) format.
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CSV Data
Saves the waveform data in ".csv" format. After selecting this type, you can touch the ParaSwitch
to determine whether to include the scope configuration parameter information (horizontal timebase,
vertical scale, etc.) or not. Touch the Save All Channel to save all displayed waveforms on the
screen or select the Source to save. The available sources include C1 ~ C4 and F1 ~ F2.
Matlab Data
Saves the waveform data in *.mat or *.dat format which can be imported by Matlab directly. The
available sources include C1 ~ C4 and F1 ~ F2 (except for FFT).
To Default Key
The oscilloscope provides two options for the default setting. When the Default Type is set to “Factory”,
the factory default setting will be recalled by pressing the Default button on the front panel; When
the Default Type is set to “Current”, the last setting saved by the “To Default Key” operation will be
recalled by pressing the Default button on the front panel.
FileConverter Tool
The mini tool is used to convert stored binary files to CSV format for viewing with a spreadsheet
program. This is ideal when collecting large datasets. For a waveform frame with deep memory such
as 200 Mpts, saving directly as a CSV file will take a long time and will occupy a large amount of
memory on a USB storage device. It’s recommended to save the data as a binary file and then convert
it to a CSV file on a computer.
The following table shows the relationship between the save types and save/recall operations.
Type Save to External Recall
Setup √ √
Reference √ √
BMP √ ×
JPG √ ×
PNG √ ×
Binary Data √ ×
CSV Data √ ×
Matlab Data √ ×
FileConverter √ ×
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File Manager
The SDS2000X HD's file manager has a similar style and operation to the Windows© operating
systems.
A. Address bar
B. Navigation panel
C. File list
D. Toolbar
E. File type
F. Close the file manager
Table 31.1 Description of icons in the file manager
Icon Description Icon Description
Back
New directory
Forward
New file
Up level
Copy
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Root directory
Paste
Save
Rename
Save as
Delete
Recall
Move
Save and Recall Instances
Save the screenshot to the path “Udisk0\sds2khd\” in the format of BMP
First, Insert the U disk.
Secondly, set the parameters of the Save operation:
Select Mode as "Save"
Select Type as "BMP"
Select the Image Style. "Normal" saves images with the
same color of the display; "Inverted" saves images with a
white background color to save ink during printing
Select the Print Area. "Grid" saves the grid area and
descriptor boxes; "Full" saves the whole display
Touch File Manager to open the file manager
Third, select the “\Udisk0\sds2khd\” directory in the file manager:
Fourth, touch Save As , click the pop-up text box to recall the virtual keyboard and input the file
name, and then touch OK :
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Once saved, the new BMP file is visible in the file manager:
In step 4, if Save is selected instead of Save As , the system saves the file as the default
file name SDS2xx4XHD_BMP_n.bmp, where n is an integer incrementing from 1. The default
save path is \SIGLENT\.
Note: Touch Utility > Print to quickly saves a screenshot to the path where the last
screenshot is saved.
Note: When a file is saved successfully, a message will pop up to inform that it has been saved,
and the filename of the next file to be saved is shown as well. The default naming strategy is to
add an incremental number at the end of the first saved filename.
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Note: A saved picture can be browsed on the oscilloscope by opening it in the File Manager.
Recall the setup file "SDS2504XHD_Setup_2.xml" stored in path “Udisk0\Atom\”
First, insert the U disk with the file "SDS2504XHD_Setup_2.xml" stored folder “\Atom\”.
Second, set the parameters of the Recall operation:
Select Mode as "Recall"
Select Type as "Setup"
Touch File Manager to open the file manager
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Third, select the “\Udisk0\Atom\” directory in the file manager, and then select the setup file
"SDS2504XHD_Setup_2.xml"
Fourth, touch the Recall icon and wait for the oscilloscope to finish recalling the setup.
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32 Utility
System Information
Operate Utility > Menu > System Info to check the system status. System information
includes the contents shown below.
System Setting
32.2.1 Language
The SDS2000X HD supports multiple languages, including Simplified Chinese, Traditional Chinese,
English, French, Japanese, German, Spanish, Russian, Italian, Portuguese, and so on.
Operate Utility > Menu > System Setting > Language , and select the language in the list.
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32.2.2 Screen Saver
The screen saver will be activated if the oscilloscope has not been operated for a period. At this time
the backlight of the display is cut off to save power consumption.
Operate Utility > Menu > System Setting > Screen Saver to specify the period before
screen saver, or select "Off" to disable the screen saver.
Any action from the mouse, touch screen, or front panel can trigger to exit the screen saver.
32.2.3 Beeper
Follow the steps Utility > Menu > System Setting > Beeper to enable or disable the
audible buzzer.
32.2.4 Auto Power-on
Operate Utility > Menu > System Setting > Auto Power On to set. See the chapter
“Power on” for details.
32.2.5 Date/Time
The SDS2000X HD has an RTC clock, which helps to record absolute time information for
screenshots, history frames, and so on.
Operate Utility > Menu > System Setting > Date/Time to open the Date/Time dialog box:
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Touch the text box of Hour, Minute, Second, Day, Month, and Year to edit these fields. Touch the
Modify Date/Time button to perform the change. Touch the text box of Time Zone to select the
time zone. Touch the Modify Time Zone button to perform the change.
32.2.6 Reference Position Setting
The reference position is used to set the strategy of scaling on the horizontal and vertical axes,
adapting to different requirements.
Operate Utility > Menu > System Setting > Reference Pos to open the dialog box, and
choose the strategy for the offset value change in the vertical (or horizontal) direction when the vertical
(or horizontal) scale is changed.
Horizontal Ref
Fixed Delay: When the time base is changed, the horizontal delay value remains fixed. As
the horizontal timebase scale is changed, the waveform expands/contracts around the
center of the display
Fixed Position: When the time base is changed, the horizontal delay remains fixed to the
grid position on the display. As the horizontal time base scale is changed, the waveform
expands/contracts around the position of the horizontal display.
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Vertical Ref
Fixed Offset: When the vertical scale is changed, the vertical offset remains fixed. As the
vertical scale is changed, the waveform expands/contracts around the main X-axis of the
display
Fixed Position: When the vertical scale is changed, the vertical offset remains fixed to the
grid position on the display. As the vertical scale is changed, the waveform
expands/contracts around the position of the vertical ground position on the display.
Take Horizontal Ref as an example to demonstrate the scaling effect of different settings:
Timebase = 10 ns/div, Horizontal Delay = -20 ns = - 2 div
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Fixed position, timebase is changed to 5 ns/div, the grid number of delay (2div) remains
fixed, while the horizontal delay changes to -10 ns
Fixed delay, timebase is changed to 5 ns/div, the horizontal delay value remains fixed,
while the grid number of delay changes to 4div
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Save Button
Push the Save button on the front panel to perform the specified save action. The default is to
save a screenshot as a picture (.bmp/.png/.jpg). Touch Utility > Save Button to set the file type
and path.
A. Select the save type: Screenshot or
Save to
B. When the save type is “Save to”, set the
save type referred to in the chapter
"Save/Recall".
Quick Action
Push the Quick Action button on the front panel to perform a specified action. Touch Utility >
Quick Action to open the Quick Action menu and set the action mapping to the button. For
example, press the button to change the trigger source, or to turn color grading on. By default, Quick
Action is disabled, and pushing the button for the first time will open the Quick Action menu.
A. Enable/disable quick action. When disabled,
pressing Quick Action will have no response
B. Set the category. When set as “Analysis”, the
button can be preset as an analysis function
switch; When set as “Edge trigger”, the button
can be preset to change some trigger
parameters such as source and slope; When set
as “Display”, the button can be preset to change
some display parameters such as color grade
and persistance
C. Set the action of this button under the selected
category
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I/O Setting
32.5.1 LXI
This oscilloscope complies with LXI version 1.5, defined in LXI device specification 2016, which can
be used to quickly build automated test systems.
Touch LXI to recall the LXI status box as below:
Touch LAN Reset to restore the LAN defaults to your oscilloscope. It will enable automatic IP,
ICMP Ping responder, and Multicast DNS, and reset the webserver password which is set in
Utility > I/O > Web Server .
After setting the LAN, the LXI welcome page can be loaded through the browser, refer to the section
“LAN” and “Web Browser” for details. When starting instrument identification in the web server, the
LXI image in the upper right corner will flash continuously.
32.5.2 LAN
Operate the following steps to set the LAN port:
Perform Utility > Menu > I/O > LAN Config to open the LAN Config dialog box.
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A. Check Automatic to enable dynamic IP. In this case,
the oscilloscope must be connected to the local area
network with a DHCP server. Contact your network
administrator to confirm the relevant information.
B. When is not checked, the oscilloscope uses static
IP. Set the static IP address, subnet mask, and gateway
separately.
C. If your network provides Dynamic DNS, you can enable
Automatic (DNS) to let the oscilloscope register its
hostname and use the DNS server for name resolution.
D. When is not checked, set the DNS IP address
manually
E. When accessing more than two SIGLENT instruments
through the web browser, it is necessary to set a different
VNC port number for each instrument. The range is from
5900 to 5999.
32.5.3 Network Storage
Perform Utility > Menu > I/O > Net storage to open the network storage dialog box:
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A. Select drive. The default is I:
B. Input the network storage directory in the text box. Check “Remember” to
remember it
C. Check“Anonymous”to access the network directory in guest mode (Username:
Guest, no password). This needs the server to permit anonymous access.
D. Username and password. Check “Remember” to save them
E. Check to automatically connect to the network directory at every power on
F. Connect or disconnect to the network directory manually
32.5.4 Web Server
The SDS2000X HD includes a web server function, you can access and control the oscilloscope using
a web browser. See the section "Web Browser" for details about remote control operation.
Perform Utility > Menu > I/O > Web Server to set the password to control the instrument.
The password length is limited to 20 bytes.
32.5.5 Emulation
When the “Emulation” option is set to “Tektronix”, the SCPI command set of the instrument is changed
to be compatible with Tek. This setting can help the user switch from a Tek scope with minimum
changes to the existing code.
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Install Options
The SDS2000X HD provides a few options to enhance its functionality. Contact your local SIGLENT
sales representative or SIGLENT technical support to get the corresponding option key. Perform the
following steps to install the option:
Utility > Menu > Software Options
A. Option information display area. When the option is not activated, the license type is
displayed as "Temporary" and can be tried up to 30 times.
B. Select the option to install.
C. The option key input area, touch or click the text box and enter the key by the virtual
keyboard.
D. Clear the characters in the key input area.
E. After entering the option key, click Install to perform the installation.
F. Use the U-disk to automatically install the option, the license must be stored in the root
directory of the U-disk.
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Maintenance
32.7.1 Upgrade
The firmware is upgradeable through external USB memory devices/U disk. Make sure the U disk
contains the correct upgrade file (*.ads) and is connected to the oscilloscope before performing the
upgrade.
Operate Utility > Menu > Maintenance > Upgrade to recall the upgrade dialog box:
Click Browse to open the file manager, select the correct upgrade file and touch the Recall icon
.
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Click Upgrade in the upgrade dialog box to start the upgrade. The oscilloscope first copies the
upgrade file (*.ads) to the local memory and parses it. If the parse succeeds, it will show the following
dialog. Users can choose Cancel to cancel the upgrade or Reboot to restart the oscilloscope
immediately and continue the upgrade. Otherwise, the oscilloscope will restart automatically to finish
the upgrade.
After the reboot, check if the version number is in "System Information".
Warning: Do not turn off the power during upgrading. Otherwise, the
oscilloscope may not boot up!
32.7.2 Self-Test
The Self-tests include screen, keyboard, and LED tests. It is used to check whether the oscilloscope
has any electrical or mechanical problems with the user interface such as color distortion, and the
sensitivity of buttons and knobs.
Screen Test
The screen test is used to find out whether the oscilloscope display has serious color distortion, bad
pixels, or screen scratches. Perform Utility > Menu > Maintenance > Self Test >
Screen Test , and the oscilloscope will enter the screen test interface as shown below. The screen
displays in blue at first.
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Press the "Single" button to switch to red and green display mode. Observe whether there is any color
distortion, bad pixels, or scratches on the screen. Press the "Run/Stop" button to exit the screen test
mode.
Keyboard Test
The keyboard test is used to check whether the oscilloscope front panel buttons or knobs are
responsive or sensitive. Perform Utility > Menu > Maintenance > Self Test >
Keyboard Test to recall the following interface:
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Knob test: Turn each knob clockwise, counter-clockwise, and press down. Observe whether the
value on the corresponding knob (default 0) on the screen increases or decreases in real-time and
whether the knob lights up when it is pressed.
Button test: Press each button and check whether the corresponding button icon on the screen
lights up in real-time.
Press the "Run/Stop" button three times to exit the keyboard test.
LED Test
The LED test is used to check whether the button backlight on the front panel is functional. Operate
Utility > Menu > Maintenance > Self Test > LED Test to recall the following interface:
Press the "Single" button and the first LED on the front panel will light. The corresponding position
of the key on the screen will also change color. Press the "Single" button to check the next button.
Press the "Single" button consecutively until all the backlights are tested. Press the "Run/Stop"
button to exit the LED test.
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32.7.3 Self-Calibration
The self-calibration program can quickly calibrate the oscilloscope to reach the best working state
and the most precise measurement. It is recommended to perform a self-calibration if the change of
ambient temperature is more than 5 ℃.
Note
: Make sure the oscilloscope has been warmed up or operated for more than 30 minutes before
the self-calibration.
Please do the self-calibration as follows:
1. Disconnect everything from all inputs.
2. Operate Utility > Menu > Maintenance > Self Calibration , and the following
dialog box appears. Select Continue to start the self-cal program.
3. The oscilloscope will not respond to any operation until the self-cal is finished. After the
self-cal is completed, touch the screen or press any button to exit.
Quick Cal
When Quick Cal is enabled, the oscilloscope will initiate an ADC calibration procedure when the ADC
temperature changes by over 3 ℃ to avoid performance drift. This procedure is quick enough not to
affect the user experience but will interrupt the acquisition procedure. It is recommended to disable it
when capturing long-duration waveforms or monitoring rare events without interruption. The default
status of Quick Cal is disabled.
Changing vertical scale or channel interleaving mode will initiate the same ADC calibration procedure
in the background. This is always enabled, regardless of the status of Quick Cal.
Touch Utility
＞
Menu
＞
Maintenance
＞
Quick Cal to set Quick Cal.
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32.7.4 Developer Options
This function is used for internal development by SIGLENT.
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33 Remote Control
The SDS2000X HD provides a LAN port and a USB Device port which can be used for remote
control in multiple ways.
Web Browser
A built-in web server provides an approach to interact with the oscilloscope by a web browser. It
doesn’t require any additional software to be installed on the computer. Set the LAN port correctly
(see section “LAN” for details), input the IP address of the oscilloscope in the browser address bar,
and then the user can browse and control the oscilloscope on the web.
A. Input the IP address of the instrument
B. Instrument information
C. Click here to recall the instrument control interface
Below is the instrument control interface:
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A. Display and control area of the instrument. The display in this area is a copy of the
instrument display. Using the mouse to operate in the area is equivalent to directly
operating the touch screen display of the instrument.
B. Click here to perform a screenshot
C. Click here to save the waveform data as a bin file and download it to the local computer
D. Click here to save the waveform data as a CSV file and download it to the local computer
E. Click here to download the mini-tool for converting binary files to CSV
F. Click here to perform a firmware upgrade
Other Connectivity
The SDS2000X HD also supports remote control of the instrument by sending SCPI commands via
NI-VISA, Telnet, or Socket. For more information, refer to the programming guide for this product.
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34 Troubleshooting
The commonly encountered failures and their solutions are listed below. When you encounter those
problems, please solve them using the corresponding steps. If the problem remains, please contact
SIGLENT as soon as possible.
1. The screen is still dark (no display) after power on:
1) Check whether the power is correctly connected.
2) Check whether the power switch is on.
3) Check whether the fuse is burned out. If the fuse needs to be changed, please contact
SIGLENT timely and return the instrument to the factory for replacement by the
maintenance personnel authorized by SIGLENT.
4) Restart the instrument after finishing the above inspections.
5) If it still does not work correctly, please contact SIGLENT.
2. The signal is sampled but no waveform of the signal is displayed:
1) Check whether the probe is correctly connected to the signal connecting wire.
2) Check whether the signal connecting wire is correctly connected to the BNC (namely
channel connector).
3) Check whether the probe is correctly connected to the item to be tested.
4) Check whether there are signals generated from the item to be tested.
5) Resample the signal.
3. The tested voltage amplitude is greater or lower than the actual value (Note that this problem
usually occurs when the probe is used):
1) Check whether the attenuation coefficient of the channel complies with the attenuation
ratio of the physical probe.
2) Disconnect the oscilloscope from the external signal and do a self-cal.
4. There is a waveform display but not stable:
1) Check the trigger signal source: check whether the source item at the trigger panel
complies with the signal channel used.
SDS2000X HD Series Digital Oscilloscope User Manual
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2) Check whether it is a "false wave”: when the signal frequency is very large (more than
half of the sample rate), it is easy to appear as a "false wave". At this point, a small time
base should be set to make the sample rate more than 2 times the signal frequency.
3) Check the trigger type: general signals should use the “Edge” trigger and video signals
should use the “Video” trigger. Only when the proper trigger type is used, can the
waveform be displayed stably.
4) Change the trigger holdoff setting.
5. No display after pressing Run/Stop :
Check whether the mode at the trigger panel (TRIGGER) is on “Normal” or “Single” and
whether the trigger level exceeds the waveform range. If yes, set the trigger level to the
middle or set the mode to “Auto”.
Note: Using Auto could automatically finish the above setting.
6. The touch screen does not respond to touch operation:
1) Check whether the Touch button backlight on the front panel is lighted up. If not, the
touch screen is not turned on. Press the button to enable the touch screen
2) Restart the instrument.
7. The USB storage device cannot be recognized:
1) Check whether the USB storage device can work normally.
2) Make sure whether the USB interface can work normally.
3) Make sure that the USB storage device being used is flash storage type. This
oscilloscope does not support hardware storage type.
4) Make sure that the U disk system format is FAT32.
5) Restart the instrument and then insert the USB storage device to check it.
6) If the USB storage device still cannot be used normally, please contact SIGLENT.
About SIGLENT
SIGLENT is an international high-tech company, concentrating on R&D, sales,
production and services of electronic test & measurement instruments.
SIGLENT first began developing digital oscilloscopes independently in 2002.
After more than a decade of continuous development, SIGLENT has extended
its product line to include digital oscilloscopes, isolated handheld
oscilloscopes, function/arbitrary waveform generators, RF/MW signal
generators, spectrum analyzers, vector network analyzers, digital multimeters,
DC power supplies, electronic loads and other general purpose test
instrumentation. Since its first oscilloscope was launched in 2005, SIGLENT
has become the fastest growing manufacturer of digital oscilloscopes. We
firmly believe that today SIGLENT is the best value in electronic test &
measurement.
Headquarters:
SIGLENT Technologies Co., Ltd
Add: Bldg No.4 & No.5, Antongda Industrial
Zone, 3rd Liuxian Road, Bao'an District,
Shenzhen, 518101, China
Tel: + 86 755 3688 7876
Fax: + 86 755 3359 1582
Email: sales@siglent.com
Website: int.siglent.com
North America:
SIGLENT Technologies America, Inc
6557 Cochran Rd Solon, Ohio 44139
Tel: 440-398-5800
Toll Free: 877-515-5551
Fax: 440-399-1211
Email: info@siglentna.com
Website: www.siglentna.com
Europe:
SIGLENT Technologies Germany GmbH
Add: Staetzlinger Str. 70
86165 Augsburg, Germany
Tel: +49(0)-821-666 0 111 0
Fax: +49(0)-821-666 0 111 22
Email: info-eu@siglent.com
Website: www.siglenteu.com
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