Agilent Technologies E1445A Manual de usuario Pagina 174
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Triggering the AFG
Arming the AFG places the device in the Wait-for-Trigger state (Figure 5-1).
When a trigger occurs, the AFG digital-to-analog converter (DAC) outputs one
waveform amplitude point.
The information in this section covers the commands and programming
sequence used to trigger the AFG when outputting fixed frequency waveforms.
Triggering
Commands
The commands which trigger the AFG allow you to specify the following:
– the (start) trigger source
– the slope of an external (start) trigger signal
– the stop trigger source
– the slope of an external stop trigger signal
– the sample gating source
– the polarity of an external gating signal
– to enable sample gating
The triggering commands include:
TRIGger
[:STARt|SEQuence[1]]
:COUNt <
number>
:GATE
:POLarity <
polarity>
:SOURce <
source>
:STATe <
state>
[:IMMediate]
:SLOPe <
edge>
:SOURce <
source>
:STOP|SEQuence2
[:IMMediate]
:SLOPe <
edge>
:SOURce <
source>
Note The trigger count (TRIGger[:STARt]:COUNt) is always equal to the number
of amplitude points in the current waveform, multiplied by the number of
waveform cycles. This value is not programmable (other than 9.91E37), but
is included for SCPI compatibility purposes only.
172 Arming and Triggering Chapter 5
- *E1445-90005* 1
- Contents 3
- WARNINGS 16
- Printing History 16
- Safety Symbols 16
- Declaration of Conformity 17
- Getting Started 21
- VXIbus Factory 22
- Settings 22
- The AFG Logical 23
- Addressing the AFG 24
- (External Controller 24
- Setting the AFG 25
- Servant Area 25
- The AFG Bus 26
- Request Level 26
- AFG Installation in 27
- Instrument Language (SCPI) 28
- Executing Coupled 30
- Commands 30
- Program Languages 31
- Turning Off 33
- (Suppressing) the 33
- End-Of-Line Terminator 33
- Visual BASIC 34
- Language 34
- Programs Using 34
- Agilent SICL 34
- Visual C/C++ 42
- Introductory Programs 48
- Resetting and 49
- Clearing the AFG 49
- Querying the 50
- Power-On/Reset 50
- Configuration 50
- Generating 53
- Sine Waves 53
- Generating Standard Waveforms 55
- Standard Waveforms Flowchart 56
- Generating Sine Waves 60
- Generating Square Waves 63
- Selecting the Output Loads 71
- Using Phase Modulation 77
- Sinusoid Function 80
- Requirements 80
- Output Units 82
- Selecting the 82
- Deviation Units for 82
- Phase Modulation 82
- Using MINimum 83
- Chapter 3 85
- Arbitrary Waveforms Flowchart 86
- Visual BASIC and 100
- Visual C/C++ Program 100
- Versions 100
- [SOURce:]LIST[1]:DELete:ALL 101
- Continued on Next Page 104
- Sample Programs 106
- Generating a 109
- Damped Sine Wave 109
- Rectified Sine Wave 113
- Using DAC Codes 116
- Sending Segment 116
- Sequences 116
- Reference 117
- Oscillator Sources 117
- Sample Sources 117
- Chapter 4 119
- Chapter Contents 119
- FSK Programming Flowchart 120
- FSK Command Reference 122
- Sweeping and Frequency Lists 122
- Sweeping Using 123
- Start and Stop 123
- Frequencies 123
- Specifying a 126
- Frequency List 126
- Start and Span 129
- Frequency Lists 132
- Using Definite and 132
- Indefinite Length 132
- Arbitrary Blocks 132
- Sweep Points 137
- Versus Time 137
- Frequency-Shift Keying 149
- Sweep Count and 158
- Repetition Count 158
- 1 160
- Output Frequency 162
- FSK Control 163
- Arming and Triggering 165
- The ARM-TRIG Configuration 166
- Initiating Waveforms 167
- Arming the AFG 167
- Setting Arming 168
- Setting the Arm 171
- Cycle Count 171
- Triggering the AFG 174
- Figure 5-3 175
- Lock-Stepping 178
- Multiple AFGs 178
- Gating Trigger 185
- Frequency Sweeps 188
- Using Triggers 188
- Arming and 192
- Triggering a 192
- Frequency Sweep 192
- Aborting Waveforms 198
- AFG Frequency 199
- Synthesis Modes 199
- Frequency Sweep/ 203
- List Arming 203
- List Advance Trigger 203
- Chapter 6 205
- Marker Pulse Enable Flowchart 206
- Available Marker Sources 207
- Generating Marker 208
- Pulses for Arbitrary 208
- Waveforms 208
- Generating Multiple 209
- Marker Pulses in 209
- Multiple Segment 209
- Generating Single 214
- Single Waveform 214
- Segments 214
- Marker Program Comments 224
- High Speed Operation 225
- Using the Signed 227
- Number Format 227
- Using the Unsigned 231
- Definite Length 233
- Block Data Format 233
- Using Combined Signed Data 241
- Using the Combined 242
- List with the Signed 242
- Using Combined Unsigned Data 247
- Combined Segment 252
- Sequence List 252
- Using the VXIbus Backplane 261
- Downloading Data 271
- Directly into the 271
- “Digital Port In” 280
- Connector Pinout 280
- ≥ to the maximum DAC 282
- Command Reference 283
- Command Types 286
- SCPI Command Format 286
- SCPI Command Parameters 288
- Optional 289
- Parameters 289
- Querying 289
- Parameter 289
- SCPI Command Execution 290
- SCPI Command Reference 291
- Example Aborting a Waveform 292
- [:STARt][:LAYer[1]]:COUNt 293
- [:STARt]:LAYer2:COUNt 294
- [:STARt]:LAYer2[:IMMediate] 295
- [:STARt]:LAYer2:SLOPe 295
- [:STARt]:LAYer2:SOURce 296
- :SWEep:COUNt 297
- :SWEep[:IMMediate] 297
- :SWEep:LINK 298
- :SWEep:SOURce 299
- CALibration 300
- :DATA:AC[1] 301
- :DATA:AC2 301
- :DATA[:DC] 302
- [:DC]:BEGin 302
- [:DC]:POINt? 303
- :SECure:CODE 304
- :SECure[:STATe] 305
- :STATe:AC 306
- :STATe:DC 307
- INITiate 308
- OUTPut[1] 310
- :FILTer[:LPASs][:STATe] 311
- :IMPedance 311
- :LOAD:AUTO 313
- [:STATe] 313
- [SOURce:] 314
- [SOURce:]ARBitrary 315
- :DAC:SOURce 317
- :DOWNload 318
- :DOWNload:COMPlete 320
- [SOURce:]FREQuency[1] 321
- [:CW 324
- :FSKey:SOURce 326
- [SOURce:]FREQuency2 332
- [:CW 333
- [SOURce:]FUNCtion 334
- [SOURce:]LIST[1] 336
- :FORMat[:DATA] 337
- [:SEGMent]:ADDRess? 338
- [:SEGMent]:CATalog? 338
- [:SEGMent]:COMBined 339
- [:SEGMent]:COMBined:POINts? 340
- [:SEGMent]:DEFine 341
- [:SEGMent]:DELete:ALL 342
- [:SEGMent]:DELete[:SELected] 342
- [:SEGMent]:FREE? 343
- [:SEGMent]:MARKer 344
- [:SEGMent]:MARKer:POINts? 345
- [:SEGMent]:MARKer:SPOint 345
- [:SEGMent]:SELect 346
- [:SEGMent]:VOLTage 347
- [:SEGMent]:VOLTage:DAC 348
- [:SEGMent]:VOLTage:POINts? 349
- :SSEQuence:ADDRess? 349
- :SSEQuence:CATalog? 350
- :SSEQuence:COMBined 350
- :SSEQuence:COMBined:POINts? 351
- :SSEQuence:DEFine 352
- :SSEQuence:DELete:ALL 353
- :SSEQuence:DELete[:SELected] 353
- :SSEQuence:DWELl:COUNt 354
- :SSEQuence:FREE? 355
- :SSEQuence:MARKer 356
- :SSEQuence:MARKer:POINts? 357
- :SSEQuence:MARKer:SPOint 357
- :SSEQuence:SELect 358
- :SSEQuence:SEQuence 359
- :SSEQuence:SEQuence:SEGMents? 359
- [SOURce:]LIST2 360
- :FREQuency 361
- :FREQuency:POINts? 362
- [SOURce:]MARKer 363
- :ECLTrg<n>[:STATe] 364
- :POLarity 366
- [SOURce:]PM 367
- :UNIT[:ANGLe] 369
- [SOURce:]RAMP 370
- [SOURce:]ROSCillator 372
- [SOURce:]SWEep 374
- :DIRection 375
- :SPACing 377
- [SOURce:]VOLTage 379
- [:LEVel][:IMMediate]:OFFSet 382
- CALibration[:DC]:BEGin 383
- :OPC:INITiate 384
- :OPERation:CONDition? 385
- :OPERation:ENABle 385
- :OPERation[:EVENt]? 386
- :OPERation:NTRansition 386
- :OPERation:PTRansition 387
- :QUEStionable:CONDition? 388
- :QUEStionable:ENABle 388
- :QUEStionable[:EVENt]? 389
- :QUEStionable:NTRansition 389
- :QUEStionable:PTRansition 390
- Subsystem Syntax SYSTem 391
- :VERSion? 392
- Subsystem Syntax TRIGger 393
- [:STARt]:COUNt 394
- [:STARt]:GATE:POLarity 395
- [:STARt]:GATE:SOURce 395
- [:STARt]:GATE:STATe 396
- [:STARt][:IMMediate] 397
- [:STARt]:SLOPe 397
- [:STARt]:SOURce 398
- :STOP[:IMMediate] 399
- :STOP:SLOPe 400
- :STOP:SOURce 400
- :SWEep:TIMer 404
- VINStrument 405
- [:CONFigure]:LBUS[:MODE]:AUTO 406
- [:CONFigure]:TEST:CONFigure 407
- [:CONFigure]:TEST:DATA? 408
- [:CONFigure]:VME[:MODE] 408
- :IDENtity? 410
- SCPI Command Quick Reference 411
- SCPI Conformance Information 416
- IEEE-488.2 Common Commands 418
- *EMC and *EMC? 419
- *ESE and *ESE? 419
- *PUD and *PUD? 424
- *SRE and *SRE? 427
- AFG Status 431
- 430 AFG Status Chapter 9 432
- The Questionable 433
- Signal Status Group 433
- 432 AFG Status Chapter 9 434
- The Operation 437
- Status Group 437
- 436 AFG Status Chapter 9 438
- The Standard Event 441
- Status Enable Register 442
- 440 AFG Status Chapter 9 442
- Comments 443
- Chapter 9 AFG Status 441 443
- The Status Byte 444
- *SRE <unmask> 445
- <unmask> value of 0 445
- STATus:PRESet 445
- 444 AFG Status Chapter 9 446
- Block Diagram Description 447
- Oscillator 450
- Frequency 450
- Generators 450
- Generating Sinusoid Waveforms 452
- Output Circuitry Description 453
- AFG Memory Description 454
- Agilent E1445A Specifications 455
- Frequency and 456
- Sample Rate 456
- Characteristics 456
- Frequency Generator #2: 457
- Amplitude 459
- Sine Wave Spectral Purity 460
- Interface 461
- General VXIbus 463
- Useful Tables 465
- Example Program Listing 466
- Command Coupling Groups 469
- Frequency Limits 472
- Amplitude Limits 473
- Power-On/Reset Configuration 474
- Output impedance 475
- Error Messages 477
- Register-Based Programming 485
- Accessing the Registers 486
- Reading the AFG’s 487
- Offset Register 487
- Reading the Offset Register 488
- Changing the Output Frequency 489
- Frequency Control 491
- Programs 491
- SOUR:FREQ1:RANG command in 493
- RAMP:POINts value 493
- Divide-by-N Frequency 494
- Changing the Signal Phase 497
- Phase Control 498
- The Waveform 500
- Sequence Registers 500
- Sequence Selection 502
- 470 SUBEND 503
- The High Speed Data 508
- Register 508
- • High-Speed Data Register: 508
- Agilent E1445A User’s Manual 511
- A (continued) 512
- B (continued) 513
- C (continued) 514
- D (continued) 516
- E (continued) 518
- F (continued) 519
- G (continued) 520
- M (continued) 522
- Q (continued) 524
- R (continued) 525
- S (continued) 526
- T (continued) 531
- V (continued) 532
- W (continued) 533
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