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412 Chapter 16

GPIB Command Reference

ROPEN

Syntax ROPEN <string>

Description Makes a specified file read-enabled. If the file does not exist, an error occurs.

Generally, this command is used in combination with the “READ?”(407page) command

and the “CLOSE”(280page) command, as shown in Figure 16-8. (No query)

Parameters

Corresponding

key

No front panel key is available to execute this function.

Figure 16-8 Procedure of executing commands to read/write data

Description

<string> File name of up to 12 characters including its extension

Default Chapter5
- Table of Contents5
1 To Make Effective Use of this Manual19
- Contents of this Manual20
- How to Use this Manual22
  - Sample Programs22
- Other Manuals Attached to this Unit23
2 Remote Control, Overview25
- GPIB Remote Control System, Overview26
- Sending GPIB Command Messages29
  - GPIB Commands29
  - Message Syntax29
- The Basics of Writing/Running Programs30
  - An Easy Way to Write a Program30
  - Running the Program32
- Saving and Reading the Program33
  - Saving the Program Generated33
  - Reading the Saved File33
- Remote Control Using a LAN34
3 Setting Measurement Conditions35
- Setting Measurement Parameters36
- Setting Measurement Signals38
  - Setting the Oscillator38
  - Setting a DC Bias38
- Setting a Sweep Condition39
- Setting the On-Screen Arrangement40
  - Setting How the Way Traces Are Displayed40
  - Setting a Display Scale41
- Setting Averaging43
  - Setting a Measurement Bandwidth43
- Combining Two or more Sweep Conditions (List Sweep)44
- Setting the Limit Test Functions46
- Saving/Recalling Measurement Conditions48
- A Sample Program for Setting Measurement Conditions49
4 Preparing for Accurate Measurement53
- Adapter Setting54
- User Calibration58
- Fixture Compensation63
- Port Extension Compensation70
5 Starting a Measurement (Trigger) and Detecting the Completion of a Measurement (End of Sweeps)71
- Triggering a Measurement (Starting a Measurement)72
  - Trigger System72
  - Triggering a Measurement73
- Waiting for the Completion of One or more Sweeps (Detecting the Completion of a Measurement)74
6 Reading/Writing Measurement Data77
- Data Transfer Format78
- Internal Data Processing81
  - Data Processing Sequence81
  - Internal Data Arrays81
- Reading/Writing Data84
7 Processing Measurement Results95
- Reading Measurement Data at Specific Measurement Points (Using the Marker Function)96
- Analyzing Measurement Results100
8 Saving/Recalling a Measurement Result/Measurement Setup111
- Save/Recall of a File112
- 9 Communication with External Equipment (Using the I/O Ports)119
  - Using the I/O Ports120
    - 8-Bit I/O Port120
    - 24-Bit I/O Port122
  - Sample Program to Use the I/O Port129
10 Handling Errors131
- Using the Status Register132
- Using the Error Queue133
- Sample Program for Error Handling134
11 Using HP Instrument BASIC137
- HP Instrument BASIC, Overview138
- Controlling the Agilent 4294A138
- Reserving an Area for BASIC on the Screen139
- Entering BASIC Commands Using the Keys Located on the Front Panel139
- Editing a Program140
- Keyboard154
- Instrument BASIC Commands Specific to the Agilent 4294A159
- Instrument BASIC Commands that Cannot be Run on the Agilent 4294A162
12 Using LAN163
- Advantages of LAN Connection164
- Getting Ready for Using LAN165
  - Getting Ready for LAN Connection165
  - Connecting with LAN166
- Transferring Files167
  - File Transfer Procedure Using Ftp167
  - File Transfer Procedure Using a File Transfer Application169
- Saving/Recalling a File In/From an External Computer171
- Controlling the Agilent 4294A174
  - Control by Use of Sockets174
  - Control by Making Use of the Dynamic Data Disk184
13 Application Sample Programs185
- Basic Measurement186
- Measuring Dielectric Material190
- Measuring Magnetic Materials213
  - Measurement Procedure213
  - Sample Program215
- Measurement Controlling Oscillator Level224
- Measurement Using Scanner229
14 Using Printer247
- Printing Onto a Printer Directly Connected to Agilent 4294A248
15 Setting the Display (LCD)251
- Setting the LCD Screen252
16 GPIB Command Reference255
- Notational Conventions in this Command Reference256
  - Syntax256
  - Description256
  - Parameters256
  - Query Response256
  - Corresponding Key257
  - IEEE Common Command258
  - The Agilent 4294A Commands263
- Anarang267
- Anarfull268
- Anasegm268
- Auto268
- Aver269
- Averfact269
- Averrest269
- Baci270
- Beepdone270
- Beepfail271
- Beepwarn271
- Blight272
- Bmon272
- Botv273
- Bwfact274
- Cal{A|B|C274
- Caldon274
- Calecpara275
- Calp275
- Calqui275
- Cals275
- Calst276
- Cbri276
- Cent277
- Chad278
- Cin278
- Clel279
- Cles279
- Close280
- Colo280
- Color281
- Com{A|B|C281
- Coms281
- Comst{A|B|C282
- Cont282
- Copa282
- Copt283
- Cout283
- Cred284
- Cwd284
- Cwfreq285
- Datmem285
- Datoval286
- Dcalload{R|L287
- Dcalopen{G|C288
- Dcalshor{R|L289
- DCI290
- Dcmod291
- Dco291
- Dcomload{R|L292
- Dcomopen{G|C293
- Dcomshor{R|L294
- Dcrng294
- DCV295
- Defc295
- Defec{R1|C1|L1|C0296
- Dflt297
- Din297
- Disa298
- Disecirc298
- Disecpara299
- Disl299
- Disllist299
- Dismamp300
- Dismprm300
- Disp301
- Dmkr302
- Dmkrauv303
- Dmkrp304
- Dmkrprm305
- Dmkrval306
- Dmode307
- Dout307
- Dpi308
- Dskey308
- E4Tp309
- Ecal{P|A|B|C309
- Ecaldon309
- Ecalqui310
- Editdone310
- Editliml310
- Editlist310
- Enkey310
- Equc311
- Equc0311
- Equcpars4312
- Esb313
- Esnb314
- Expp314
- Filc315
- Fmt315
- Fname316
- Fnum316
- Form2316
- Form3316
- Form4317
- Form5317
- Formfeed317
- Fsize318
- Hidi318
- Hold318
- Inid319
- Inp8Io319
- Inpt319
- Inpucalc{1-3320
- Inpucomc{1-3321
- Inpudata321
- Inpudtrc322
- Inte322
- Key323
- Landscape324
- Limclel324
- Limdstar325
- Limdstop326
- Limedone326
- Limiampo327
- Limiprmo327
- Limitest328
- Limlstar328
- Limlstop329
- Limsadd330
- Limsdel331
- Limsdon331
- Limsedi332
- Limsegm333
- Limsqui333
- Limstar334
- Limstest335
- Limstop336
- Limustar337
- Limustop338
- Limvstar339
- Limvstop340
- Lispan341
- Lisv341
- Lmarg342
- Lmaxs343
- Lmins344
- Manp345
- Manr346
- Mans347
- Maxdcv347
- Meas348
- Meastat349
- Mindcv350
- Mkr350
- Mkrampo351
- Mkrauv351
- Mkrcent351
- Mkrcoup352
- Mkrdspan352
- Mkrl352
- Mkrlimstar353
- Mkrlimstop353
- Mkrlimvstar354
- Mkrlimvstop354
- Mkrmanp354
- Mkrmon355
- Mkrmov355
- Mkro356
- Mkrofs356
- Mkrp357
- Mkrpkd357
- Mkrprm358
- Mkrref358
- Mkrstar359
- Mkrstop359
- Mkrtr359
- Mkrtrmax359
- Mkrtrmin360
- Mkrval360
- Mkrxunit361
- Mkrzm361
- Negl362
- Nexnpk362
- Nexp363
- Nexpk363
- Npeak364
- Numg364
- Omon365
- Opep365
- Ose365
- Oser366
- Osnt366
- Ospt367
- Osr367
- Out1{H|L367
- Out1Env{H|L367
- Out2{H|L368
- Out2Env{H|L368
- Out8Io368
- Outaio369
- Outbio369
- Outcio370
- Outdio370
- Outeio371
- Outfio371
- Outgio372
- Outhio372
- Outpcalc{1-3373
- Outpcerr373
- Outpcomc{1-3374
- Outpdata375
- Outpdatap375
- Outpdc376
- Outpdcp376
- Outpdmkr377
- Outpdtrc378
- Outpdtrcp379
- Outperro380
- Outpfaip380
- Outpiac380
- Outpiacp381
- Outpinpcio381
- Outpinpdio382
- Outpinpeio382
- Outplimf383
- Outpliml383
- Outplimm384
- Outpmax384
- Outpmemo385
- Outpmemop385
- Outpmin386
- Outpminmax386
- Outpmkr387
- Outpmsta388
- Outpmtrc388
- Outpmtrcp389
- Outpmwid390
- Outpreso391
- Outpresr392
- Outpsmkr{1-7393
- Outpswprm394
- Outpswprmp394
- Outpvac394
- Outpvacp395
- Pars395
- Paver396
- Paverfact396
- Pdelt397
- Peak397
- Peakcent398
- Phau398
- Pkdltx399
- Pkdlty400
- Pkpol400
- Poin401
- Pore401
- Portl402
- Portz402
- Posl403
- Powe403
- Powmod404
- Prep404
- Pres404
- Pric405
- Prinall405
- Prsoft405
- Purg406
- Read407
- Recd408
- Refp408
- Refv409
- Refx410
- Refy410
- Resavd411
- Resd411
- Ropen412
- Rplhei413
- Rpllhei413
- Rplpp413
- Rplpps414
- Rplrhei414
- Rsco414
- Sadd415
- Savcal416
- Savdasc416
- Savdat417
- Savddat417
- Savds1P418
- Savdsta419
- Savdtif419
- Savdtrc420
- Savmem420
- Savmtrc421
- Savpsta421
- Scac422
- Scaf422
- Scal423
- Scol424
- Scrn424
- Sdel425
- Sdelt426
- Sdon426
- Seal426
- Seam427
- Seanpk427
- Seanpkl427
- Seanpkr428
- Sear428
- Searline428
- Searmax429
- Searmaxp430
- Searmin431
- Searminp432
- Searng432
- Seatarg433
- Seatargl433
- Sedi434
- Segm435
- Segmnum436
- Setcdate436
- Setctime437
- Simfchar437
- Sing437
- Smkr{1-7438
- Smkrauv{1-7438
- Smkrp{1-7439
- Smkrprm{1-7440
- Smkrval{1-7441
- Span442
- Spld443
- Star444
- Stod445
- Stop446
- Subnet447
- Swed448
- Swet448
- Swpp449
- Swpt449
- Tarl450
- Tarr451
- Thrr452
- Tint454
- Titl454
- Tmarg455
- Topv456
- Trac457
- Track457
- Trgeve458
- Trgp458
- Trgs459
- Uskey459
  - Widfval460
  - Widsin460
  - Widsout461
  - Widt461
  - Widvtype462
  - Wopen462
  - Write463
  - Zmaper463
  - Instrument BASIC Control Commands464
Manual Changes469
- Manual Changes470
- Change 1471
  - Change to the Revision 1.0X471
  - Change 2472
    - Change to the Revision 1.10472
Status Reporting System473
- General Status Register Model474
GPIB Command Table481
- GPIB Command List Sorted According to Function482
Error Messages491
- Order of Error Number492

Brand	Agilent Technologies
Model	4294A
Category	Measuring Instruments
Language	English

Agilent Technologies 4294A Programming Manual

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