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Table 54
Name Description under
:QUICk:TCENter[?] “SENSe[1]:EYE:QUICk:TCENter[?] ” on
page 241
:TCENter[?] “SENSe[1]:EYE:TCENter[?] ” on page
242
:THReshold[?] “SENSe[1]:EYE:THReshold[?] ” on page
243
:WIDTh? “SENSe[1]:EYE:WIDTh? ” on page 243
SENSe[1]:EYE:ACENter[?]
IAgilentN490xEDSampling.ZeroOneThresholdCenter (IVI-compliant)
SENSe[1]:EYE:ACENter
SENSe[1]:EYE:ACENter?
This command initiates a search for the 0/1 threshold voltage midway between
the two 0/1 threshold voltages with a measured BER just in excess of the BER
configured by the EYE:THReshold command. If successful, the command leaves
the 0/1 threshold at this value, and the center of the eye can be found by querying
the 0/1 threshold value.
If unsuccessful, EYE:HEIGht? returns 9.91E+37 (Not-A-Number, NAN). The
command :ACENter OFF aborts a previously started search. When this command
is in execution, SENSe[1]:VOLTage:ZOTHreshold:AUTO is set to OFF. The query
returns the current value of the 0/1 threshold voltage.
This command is blocked for frequencies under 620 Mbits/s. See for details. See
the Serial BERT User Guide (or online Help) for details.
N O T E
This command temporarily disables auto align.
N O T E
The command :ACENter is an overlapped command. For more information, see
“Overlapped and Sequential Commands ” on page 80the .
SCPI Command Reference 5
Agilent J-BERT N4903B High-Performance Serial BERT 239
IVI-COM Equivalent
Syntax
Description
- 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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