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Figure

16-1.

Trigger

Subsystem

Commands

Syntax

Diagram

(continued)

54501A

Programming

Trigger Subsystem

16-11

Main Page

Table of Contents9
Introduction to Programming an Oscilloscope19
Introduction19
- Programming Syntax20
- Talking to the Instrument20
- Addressing the Instrument21
- Program Message Syntax22
- Separator23
- Command Syntax23
- Query Command25
- Program Header Options26
- Program Data26
- Program Message Terminator27
- Selecting Multiple Subsystems28
- Summary28
Programming an Oscilloscope29
- Initialization29
- Autoscale30
- Setting up the Instrument30
- Receiving Information from the Instrument31
- Response Header Options32
- Response Data Formats33
- String Variables34
- Numeric Variables35
- Digitize Command38
Interface Functions40
Introduction40
Interface Capabilities40
Addressing40
Remote, Local41
- Local Lockout41
Commands42
- Device Clear42
- Group Execute Trigger42
  - (Get)42
- Interface Clear42
  - (Ifc)42
Status Annunciators42
Message Communication and System Functions43
Protocols43
- Functional Elements43
- Protocol Overview44
- Protocol Exceptions45
Syntax Syntax47
- Diagrams47
- Device Listening Syntax50
- Device Talking63
Status Reporting70
- Bit Definitions72
- Poll72
  - Hp-Ib74
    - Devices78
    - Poll Responses78
- Conducting79
- Disabling Parallel Poll79
  - Responses79
- HP-IB Commands79
Programming and Documentation Conventions81
Introduction81
Truncation Rules81
The Command Tree84
- Command Types84
- Tree Traversal Rules85
- Examples85
Infinity Representation86
Sequential and Overlapped Commands87
Response87
Notation Conventions and Definitions87
- Generation87
Syntax Diagrams88
Command Structure89
- Common Commands89
- Root Level Commands89
- Subsystem Commands89
Program Examples91
Command Set Organization92
Common Commands100
Ese100
Esr102
Idn104
Ist105
Lrn106
Opc107
Opt108
Pre109
Rcl110
Rst111
Sav113
Sre114
Stb116
Trg118
Tst119
Wai120
Autoscale124
Beeper125
Blank126
Digitize127
Eoi128
Erase129
Ler130
Lter131
Menu132
Merge133
Print134
Run135
Serial136
Stop137
Store138
Ter139
View140
System Subsystem141
Dsp143
Error144
Header146
Key147
Longform149
Setup150
Acquire Subsystem152
Averaging153
- Mode153
Envelope153
Count153
Complete155
Points157
Type158
Introduction159
Calibrate Subsystem159
Channel Subsystem161
Introduction161
Coupling163
Hfreject165
Offset166
Probe167
Range168
Display Subsystem170
Introduction170
Column173
Connect174
Format177
Graticule178
Inverse179
Persistence183
- Mode183
Row184
Screen185
Source186
String187
Text188
Tmarker189
Vmarker190
Function Subsystem191
Introduction191
Add194
Invert195
Multiply196
Offset197
Only198
Range199
Subtract200
Versus201
Hardcopy Subsystem202
Introduction202
Length203
Measure Subsystem205
Introduction205
Measurement Setup205
User-Defined205
Error206
Making Measurements206
All215
Compare216
Cursor218
Define219
Delay221
Destination222
Dutycycle223
Estart224
Estop226
Falltime228
Frequency229
Limittest230
Mode232
Nwidth233
Overshoot234
Period235
Postfailure236
Precision237
Preshoot238
Pwidth239
Results240
Risetime241
Scratch242
Source243
Statistics244
Tdelta245
Tmax246
Tstart248
Tstop249
Tvolt250
Units252
Upper253
Vamplitude254
Vaverage255
Vbase256
Vdelta257
Vfifty258
Vmax259
Vmin260
Vpp261
Vrelative262
Vrms264
Vstart265
Vstop266
Vtime267
Vtop268
Timebase Subsystem269
Introduction269
Delay271
Mode272
Range273
Reference274
Window275
Windowdelay276
Windowrange277
Trigger Subsystem278
Introduction278
The EDGE Trigger Mode280
The Pattern Trigger Mode281
The State Trigger Mode282
The Delay Trigger Mode283
The TV Trigger Mode284
Condition290
Delay293
Delayslope294
Delay:source295
Field296
Holdoff297
Level298
Line299
Logic300
Mode301
Occurrence302
Occurrence:slope303
Occurrence:source304
Path305
Polarity306
Qualify307
Slope309
Source310
Standard311
Introduction312
Data Acquisition Types313
- Normal313
- Envelope314
Data Conversion315
- Conversion from Data Value to Voltage315
- Conversion from Data Value to Time315
Data Format for HP-IB Transfer316
- WORD Format317
- BYTE Format317
- COMPRESSED Format317
- ASCII Format317
Count320
Format323
Points324
Preamble325
Source327
Type328
Xincrement329
Xorigin330
Xreference331
Yincrement332
Yorigin333
Yreference334
Appendix Algorithms335
Introduction335
Measurement Setup335
Making Measurements335
- Automatic Top-Base336
- Frequency339
- Duty Cycle339
- Risetime339
- Falltime339
- Vmax339
- Vmin339
- Vp-P339
- Vtop339
- Vbase340
- Vamp340
- Vrms340
Appendix Example Programs341
Example Programs341
Introduction341
Vertical Channel Setup Program342
Timebase Program344
Measurement Setup Program346
Digitize Program349
Hardcopy Program (Service Request Using OPC)351
Waveform Template Program352

HP 54501A - Page 288

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