Agilent Technologies J-BERT N4903B Manuel de service Page 19
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- Table des matières
- MARQUE LIVRES
Noté. / 5. Basé sur avis des utilisateurs
3
Recommended Programming
Techniques
Recommended Programming Techniques - Concepts
This chapter provides some recommended techniques you should use when
programming the Serial BERT.
Output Protection
Output Protection
The pattern generator's Data, Clock, Aux Data and Trigger/Ref Clock Out ports
must be terminated with 50 Ω if they are not connected. Termination of output
ports improves the test performance.
The following sections describe a protection algorithm and how you can handle
the algorithm's delay time in an automated test environment.
Output Protection Algorithm
The instrument has an internal protection algorithm that protects the instrument
from improper termination of the pattern generator's output ports.
The algorithm checks for an open condition on these ports every 100ms. If the ports
are not correctly terminated, the algorithm adjusts the port's output levels to safe
levels:
• V
Term
remains unchanged.
Agilent J-BERT N4903B High-Performance Serial BERT
Programming Guide
s
Agilent Technologies 19
S
- Agilent J-BERT N4903B 1
- High-Performance Serial 1
- Contents 3
- Programming Basics 7
- Before You Begin 8
- Connecting to the Serial BERT 9
- Instrument Behavior 10
- Operation Modes 11
- 1 Programming Basics 12
- A Typical SerialBERT Program 13
- Analyzer Synchronization 16
- Setting Up a Pattern 17
- Recommended Programming 19
- Techniques 19
- Speed DUT Switching 20
- Controlling the Output Levels 21
- Overview of Registers 24
- Status Register Group Model 25
- Serial BERT Register Model 27
- Status Byte 28
- Clock Loss Register 30
- Symbol Mode Register 31
- Questionable Status Register 31
- Operation Status Register 33
- Running the Fast Eye Mask 35
- Setting Up Data Points 36
- Prepare the Measurement 36
- Run the Measurement 37
- Evaluate the Results 37
- Running the Eye Diagram 38
- Running JTol Characterization 39
- Using Error Location Capture 42
- Understanding the Status 44
- Handling the Results 45
- How to Handle Run Errors 46
- Running ELOC in IVI-COM 46
- Running ELOC in SCPI 50
- Using Interrupts 52
- Using Interrupts - Procedures 53
- Working With User Patterns 55
- Setting up a Sequence in SCPI 69
- Working with 8B/10B Symbols 70
- How to Align Filler Symbols 72
- Working with PCIe3 SKPOS 75
- How to Set PCIe3 SKPOS Mode 76
- [P]FETCh[:SENSe[1]]:ARSCount? 78
- SCPI Command Language 79
- 4 SCPI Command Language 80
- Data Types 81
- Important Points about SCPI 82
- Instrument Model 83
- Command Syntax 83
- Optional Command Keywords 84
- Sending Commands 84
- Query Responses 84
- Command Separators 85
- Sending Commands using VISA 87
- SCPI Command Reference 89
- IEEE Commands 91
- Table 11 93
- Table 12 96
- SOURce[1] Subsystem 98
- Table 13 99
- [SOURce[1]]:PATTern Subnode 100
- 5 SCPI Command Reference 100
- Table 14 101
- Table 15 102
- Table 17 107
- Table 18 111
- Table 21 119
- Table 22 120
- Table 24 121
- Table 26 126
- Table 28 128
- Table 29 129
- OUTPut[1] Subsystem 133
- Table 30 135
- OUTPut[1]:COUPling[?] 136
- OUTPut[1]:DATA:XOVer[?] 136
- OUTPut[1]:DCYCle[?] 136
- OUTPut[1]:DELay[?] 137
- OUTPut[1]:FORMat[?] 137
- OUTPut[1]:HOLD[?] 138
- OUTPut[1]:POLarity[?] 138
- OUTPut[1][:STATe][?] 138
- OUTPut[1]:TERMination[?] 139
- OUTPut[1]:WIDTh[?] 139
- OUTPut[1]:EIDLe[:STATe] 139
- OUTPut[1]:DEEMphasis Subnode 140
- Table 31 141
- OUTPut[1]:DEEMphasis:IDN? 142
- OUTPut[1]:DEEMphasis:OPTion? 144
- OUTPut[1]:MULTiplexer Subnode 145
- Table 32 146
- OUTPut[1]:MULTiplexer:IDN? 149
- OUTPut[1]:MULTiplexer:OPTion? 149
- Table 33 157
- OUTPut[1]:CLOCk[:ENABle][?] 158
- SOURce9 Subsystem 160
- Table 34 161
- SOURce9:SSCLocking[:STATe][?] 163
- SOURce2 Subsystem 165
- Table 35 166
- SOURce2:VOLTage:LLEVel[?] 169
- SOURce2:DIVider[?] 170
- Table 36 171
- OUTPut2:CENTer 172
- OUTPut2:COUPling[?] 172
- OUTPut2[:STATe][?] 172
- SOURce3 Subsystem 173
- Table 37 175
- SOURce3:TRIGger:DCDRatio 177
- SOURce3:TRIGger:CTDRatio? 177
- SOURce5 Subsystem 183
- Table 38 184
- SOURce5:MODE[?] 186
- SOURce5:BIT:OFFSet[?] 186
- SOURce5:VOLTage:LLEVel[?] 188
- OUTPut5 Subsystem 189
- Table 39 190
- SENSe6 Subsystem 191
- Table 40 192
- SENSe6:FREQuency[:CW 193
- SENSe6:MODE 193
- SENSe6:EXTernal:DIVider[?] 194
- SOURce8 Subsystem 195
- Table 41 196
- Table 42 198
- Table 43 200
- Table 44 203
- Table 45 207
- Table 46 214
- Table 47 217
- Table 48 219
- INPut[1] Subsystem 220
- Table 49 221
- INPut[1]:POLarity[?] 222
- INPut[1]:TERMination[?] 222
- INPut[1]:STATe[?] 223
- INPut[1]:CMODe[?] 223
- SENSe[1] Subsystem 224
- Table 50 225
- SENSe[1]:SYNChronizat[?] 228
- SENSe[1]:AUXout:MODE[?] 229
- SENSe[1]:ERMode:MODe[?] 230
- Table 51 231
- Table 52 232
- SENSe[1]:BLOCk[?] 233
- SENSe[1]:BLOCk:BSTart[?] 233
- :ELOCation[?] 234
- :BEADdress[?] 234
- :VERBose? 234
- :ECOunt? 234
- SENSe[1] 234
- Table 53 235
- SENSe[1]:ELOCation:VERBose? 236
- SENSe[1]:ELOCation:ECOunt? 237
- Table 54 238
- SENSe[1]:EYE:ALIGN:AUTO[?] 240
- SENSe[1]:EYE:ALIGN:MESSage? 240
- SENSe[1]:EYE:HEIGht? 241
- SENSe[1]:EYE:QUICk:ACENter[?] 241
- SENSe[1]:EYE:QUICk:TCENter[?] 241
- SENSe[1]:EYE:TCENter[?] 242
- SENSe[1]:EYE:THReshold[?] 243
- SENSe[1]:EYE:WIDTh? 243
- SENSe[1]:GATE Subnode 243
- Table 55 244
- SENSe[1]:GATE:MODE[?] 245
- SENSe[1]:GATE:PERiod:BITS[?] 246
- SENSe[1]:GATE[:STATe][?] 247
- Table 56 248
- SENSe[1]:PATTern[:SELect][?] 250
- SENSe[1]:PATTern:TRACk[?] 252
- SENSe[1]:PATTern:CAPTure 252
- Table 58 254
- Table 59 255
- Table 61 256
- Table 62 259
- SENSe[1]:PATTern:UFILe:USE[?] 260
- Table 63 261
- Table 65 263
- Table 66 264
- Table 67 266
- SENSe[1]:SFError:ASYMbol[?] 268
- SENSe[1]:SFError:CBER:MODe[?] 269
- SENSe[1]:SFError:RESult[?] 269
- :COUPling[?] 270
- :TERMination[?] 270
- SENSe2 Subsystem 271
- Table 68 272
- SENSe2:FREQuency:CDR:PERR[?] 275
- SENSe2:FREQuency:CDR:RANGe? 276
- SOURce7 Subsystem 279
- :TRIGger 280
- [:MODE][?] 280
- DCDRatio 280
- CTDRatio? 280
- [P]FETCh Subsystem 281
- Table 69 282
- [P]FETCh[:SENSe[1]] Subnode 283
- Table 70 284
- [P]FETCh[:SENSe[1]]:SFCOunt? 287
- [P]FETCh[:SENSe[1]]:EFSCount? 287
- [P]FETCh[:SENSe[1]]:RSCount? 287
- [P]FETCh[:SENSe[1]]:FCOunt? 287
- Table 71 288
- Table 72 291
- Table 73 293
- Table 74 295
- Table 75 297
- Table 76 299
- Table 77 300
- Table 78 301
- Table 79 302
- Table 80 303
- Table 81 304
- Table 82 305
- Table 83 306
- Table 84 307
- Table 85 308
- [P]FETCh 309
- [:SENSe[1]] 309
- :MSCount 309
- [:ALL][:FULL][:TOTal]? 309
- [:ALL][:FULL]:DELTa? 309
- Table 87 310
- Table 88 311
- PLUGin Subsystem 312
- Table 89 313
- Table 90 316
- Table 91 318
- STATus:CLOSs:ENABle[?] 319
- STATus:CLOSs[:EVENt]? 319
- STATus:CLOSs:NTRansition[?] 319
- Table 92 320
- Table 93 323
- STATus:QUEStionable:ENABle[?] 324
- STATus:QUEStionable[:EVENt]? 324
- Table 94 325
- STATus:SYMBol Subnode 327
- Table 95 328
- STATus:SYMBol[:EVENt]? 329
- STATus:SYMBol:NTRansition[?] 329
- STATus:SYMBol:PTRansition[?] 329
- Table 96 330
- SYSTem:BEEPer:THReshold[?] 333
- SYSTem:BEEPer:VOLume[?] 333
- SYSTem:ERRor[:NEXT]? 333
- SYSTem:GPIB[?] 333
- SYSTem:HELP:HEADers? 334
- SYSTem:LICense:AVAilable? 334
- SYSTem:LICense:DEPendency? 334
- SYSTem:LICense:HOST? 334
- SYSTem:LICense:INFO? 335
- SYSTem:LICense:INSTall 335
- SYSTem:VERSion? 336
- MEASure Subsystem 338
- Table 97 339
- Table 98 340
- MEAS:GENeric(*):OPC? 342
- MEAS:GENeric(*):PROGress? 342
- MEAS:GENeric(*):PASSed? 342
- MEAS:GENeric(*):STATe? 342
- :ADJustment(*) 343
- :CREate? 343
- :PROGress? 343
- Table 99 344
- Table 100 345
- MEAS:FEMask(*):POINt:PASSed? 351
- Table 101 352
- Table 102 365
- MEAS:JTOL:COMP(*):PAR:MARGin 373
- MEASure:EMASk(*) Subnode 376
- SCPI Command Reference 5 377
- Table 103 378
- :MEASure:EMASk(*):FETCh:DATA? 383
- :MEASure:EMASk(*):CLEAr 384
- :MEASure:EMASk(*):EXPort 384
- :MEASure:EMASk(*):MARKer? 385
- :MEASure:EMASk(*):MASK:LOAD? 385
- :MEASure:EMASk(*):MASK:STARt 386
- :MEASure:EMASk(*):MASK:STOP 386
- :MEASure:EMASk(*):MASK:MARGin 386
- :MEASure:EMASk(*):MASK:ALIGn 388
- Parameters 398
- :EXECute? 402
- :MESSages? 402
- Table 104 403
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