Exfo IQS-12004B DWDM Passive Component Test System for Manual de usuario Pagina 167
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Using the Power Meter Linearity Verification Tool
DWDM Passive Component Test System 155
Nulling Electrical Offsets
Nulling Electrical Offsets
The offset nulling process provides a zero-power reference measurement,
thus eliminating the effects of electronic offsets and dark current due to
detectors.
Temperature and humidity variations affect the performance of electronic
circuits and optical detectors. For this reason, EXFO recommends
performing a nulling of the electrical offsets whenever environmental
conditions change.
This operation allows to perform an electrical zero measurement on both
external (IQS-1643/1643T) and internal (IQS-9401 WRM) power meters.
Null measurement ensures accuracy of the power readings by taking a
measurement while protective caps are put on all power meters’
detectors. A correction factor is determined and applied to any future
measurement.
Note: You don’t have to disconnect any patchcord except the DUT when
performing a null measurement. Once the nulling is started, the source will
automatically stop emitting.
IMPORTANT
Light must not reach the detector when nulling offsets.
- IQS-12004B 1
- Contents 3
- DECLARATION OF CONFORMITY 10
- 1 Introducing the IQS-12004B 13
- DWDM Passive Component 13
- Test System 13
- Step-by-Step Approach 14
- Test Features and Results 15
- Modularity and Flexibility 15
- System Overview 16
- Testing Option 17
- 6 IQS-12004B 18
- Module Usage 18
- Tunable Laser Source 19
- IQS-5150 20
- Polarization State Adjuster 20
- Testing Procedure 21
- 10 IQS-12004B 22
- Database Structure 23
- 12 IQS-12004B 24
- 2 Safety Information 27
- 3 Getting Started with Your 29
- 18 IQS-12004B 30
- 20 IQS-12004B 32
- 22 IQS-12004B 34
- Configuration with PDL 35
- Configuration without PDL 36
- 28 IQS-12004B 40
- Software 41
- 32 IQS-12004B 44
- 34 IQS-12004B 46
- Option Application 47
- Component Test System 49
- 38 IQS-12004B 50
- Configuring an Optical Port 51
- Configuring a DUT 54
- Parameters 56
- Customizing the Channel List 58
- 48 IQS-12004B 60
- Preparing the Test Setup 61
- 52 IQS-12004B 64
- Identifying the Current DUT 66
- Modifying System Settings 68
- 5 Operating the DWDM Passive 71
- Viewing a Recent Test 77
- Connecting DUT and Modules 79
- Testing Another Component 82
- External Application 82
- 74 IQS-12004B 86
- 76 IQS-12004B 88
- ³ Click Scan 91
- Return Loss Calibration 92
- 4. Click OK 93
- IL/PDL Reference Measurement 94
- 84 IQS-12004B 96
- 7 Interpreting the DWDM 99
- Passive Component Test 99
- System Results 99
- IL/PDL Errors 100
- Return Loss Errors 101
- Viewing Test Results 102
- 92 IQS-12004B 104
- Exporting Data 106
- 96 IQS-12004B 108
- Viewing the Results Graph 109
- 98 IQS-12004B 110
- Configuration 111
- Maximize/Minimize Graph 114
- Print Graph 114
- Printing Test Results 115
- 104 IQS-12004B 116
- Customizing Printed Results 117
- Customizing Printed Graph 118
- IMPORTANT 119
- Application 120
- 8 Using the Database Browser 121
- Browsing the Database 122
- Printing a Report 123
- Typing Items to Find 123
- Exiting the Database Browser 123
- MultiPath Testing Option 125
- 114 IQS-12004B 126
- Optimizing Power 127
- 116 IQS-12004B 128
- LabVIEW Application 129
- Starting a New Test 130
- Configuring Test Parameters 134
- Nulling Electrical Offsets 136
- 126 IQS-12004B 138
- WRM monitoring zone 139
- Connection information 139
- Calibration 139
- 128 IQS-12004B 140
- 130 IQS-12004B 142
- Performing a Test 143
- 132 IQS-12004B 144
- Viewing System Information 146
- Adjusting Result Settings 146
- Exporting Test Results 148
- 138 IQS-12004B 150
- 11 Using the Wavelength 151
- Calibration Software 151
- Initializing the Modules 152
- Preparing the Calibration 153
- Performing the Acquisition 155
- Analyzing the Results 156
- Using Calibration Tools 157
- To view a calibration report: 158
- 12 Using the Power Meter 161
- Linearity Verification Tool 161
- 150 IQS-12004B 162
- Test power meter (DUT) 162
- Initializing Hardware 166
- 156 IQS-12004B 168
- Attenuation 171
- 162 IQS-12004B 174
- 0128007-39_Increase_Ch1.rp 174
- 164 IQS-12004B 176
- Viewing Online User Guide 177
- 166 IQS-12004B 178
- 13 Automating or Remotely 179
- Controlling the System 179
- Initializing the Hardware 181
- Optimizing the Power 182
- Calibrating the System 183
- 172 IQS-12004B 184
- Referencing the System 185
- 174 IQS-12004B 186
- Testing the DUT 187
- Retrieving Results 188
- Modifying GPIB Parameters 190
- Opening a GPIB Connection 191
- Closing a GPIB Connection 193
- Editing GPIB Information 193
- Logging GPIB Information 194
- Monitoring the Power Meter 194
- Printing GPIB Information 195
- GPIB Command Structure 196
- 186 IQS-12004B 198
- Command Function 198
- 188 IQS-12004B 200
- 190 IQS-12004B 202
- 192 IQS-12004B 204
- GPIB Error Messages Format 206
- SCPI Error Messages 207
- 196 IQS-12004B 208
- Error Number Description 208
- 198 IQS-12004B 210
- PCI-GPIB. Click Next 213
- 202 IQS-12004B 214
- 204 IQS-12004B 216
- COM Objects 217
- Programming languages not 219
- 208 IQS-12004B 220
- 210 IQS-12004B 222
- Description 223
- 14 Maintenance 225
- Recalibrating the Unit 231
- Disposing of Old CKT Modules 231
- Recycling and Disposal 232
- 15 Troubleshooting 233
- 222 IQS-12004B 234
- 465 Godin Avenue 235
- Transportation 236
- 16 Warranty 237
- Service and Repairs 239
- 228 IQS-12004B 240
- A Technical Specifications 241
- Technical Specifications 242
- B SCPI Commands Reference 243
- 232 IQS-12004B 244
- General Commands 244
- Specific Commands 245
- INITialization:SIMUlation 246
- INITialization:SIMUlation? 246
- CONFiguration:CHANnel 247
- CONFiguration:CHANnel? 248
- CONFiguration:ACQuisitionType 248
- CONFiguration:KeepIL 250
- CONFiguration:KeepIL? 250
- 240 IQS-12004B 252
- CONFiguration:STARt 253
- CONFiguration:STARt? 253
- CONFiguration:STOP 254
- CONFiguration:STOP? 254
- 244 IQS-12004B 256
- CALibration:NULLing 257
- CALibration:ORLRtj 258
- CALibration:ORLRtj? 258
- CALibration:STOP 259
- CALibration:ORLMandrelrtj 260
- CALibration:ORLMandrelrtj? 260
- REFerence:IL 261
- REFerence:IL? 261
- REFerence:ILPDl 262
- REFerence:ILPDl? 262
- REFerence:ORLM 263
- REFerence:ORLM? 263
- REFerence:STOP 264
- TEST:AVAilableTests? 264
- TEST:CLeaR 265
- ACQuisition:IL 265
- ACQuisition:ILPDl 265
- ACQuisition:ORL 266
- ACQuisition:SYNChronized 266
- ACQuisition:STOP 267
- STATus:ERRor? 268
- READ:CURVe:IL? 268
- READ:CURVe:PDL? 269
- READ:CURVe:ORL? 269
- READ:CURVe:ILPDl? 270
- READ:CURVe:SYNChronized? 270
- READ:CHANnel? 271
- READ:CHannelLOcalization? 271
- READ:PowerMeter? 272
- READ:SerialNumber? 273
- READ:StateOfPolarization 274
- READ:StateOfPolarization? 274
- 264 IQS-12004B 276
- SOURce:MINimumWavelength? 277
- SOURce:MAXimumWavelength? 277
- SOURce:ON 278
- SOURce:ON? 278
- SOURce:STABilization? 279
- SOURce:WAVElength 280
- SOURce:WAVElength? 280
- C COM Objects Reference 281
- DWDMAcq Interface—Properties 282
- RawDataPath 283
- SaveRawData 283
- ComponentVersion 284
- PdlSimplifiedMethod 285
- Measures Interface—Methods 286
- AcqIlPdlDut 287
- AcqOrlMandrelDut 287
- AcqPowerSynchronized 288
- CalOrlMandrelRtj 289
- CalOrlRtj 289
- 278 IQS-12004B 290
- RefIlPdl 291
- RefOrlMandrel 291
- Measures Interface—Properties 292
- AcqIlPdlDutDone 293
- AcqOrlMandrelDutDone 293
- CalOrlMandrelRtjDone 294
- CalOrlRtjDone 294
- CalWrDone 295
- RefIlDone 296
- RefIlPdlDone 296
- RefOrlMandrelDone 297
- Modules Interface—Methods 298
- InitHardware 299
- OptimizePower 300
- OptimizePowerDone 301
- ShowPowerMeterMonitor 301
- Modules Interface—Properties 302
- ChannelLocalisation 303
- FormatedPowerAcq 304
- FormatedWrmPowerAcq 305
- InitDate 305
- InitDone 306
- MinPowerForCal 306
- MinPowerForRef 307
- MinPowerInWrm 307
- NullingDone 308
- PolarizationState 308
- PossibleTestWithHard 309
- PowerAcq 309
- PowerMeterMonitorHeight 310
- PowerMeterMonitorLeftPosition 310
- PowerMeterMonitorTopPosition 311
- PowerMeterMonitorWidth 311
- SourceActive 312
- SourceMaxWavelength 313
- SourceMinWavelength 313
- SourceStabilisationTime 314
- SourceWavelength 314
- WrmPowerAcq 315
- Results Interface—Methods 316
- Results Interface—Properties 316
- OrlCurve 317
- PdlCurve 318
- IlCurveForPolarization 319
- SynchronizedPower 320
- AnalysisRangeMax 321
- AnalysisRangeMin 322
- AnalysisRangeStart 322
- AnalysisRangeStop 323
- AutoRangeFiltering 323
- AvailableTests 324
- KeepILForAllPolarization 324
- NumberOfAcqChannels 325
- NumberOfAvailableChannels 325
- ComputerName 326
- ModuleName 327
- SerialNumber 328
- SlotNumber 328
- PmChannel 329
- PmNumber 329
- AcqCompleted 330
- AcqError 331
- AcqInProgress 331
- CalCompleted 332
- CalError 332
- CalInProgress 333
- InitCompleted 334
- InitInProgress 334
- NullingCompleted 334
- NullingInProgress 335
- OptimizePowerCompleted 335
- OptimizePowerInProgress 336
- RefCompleted 336
- RefError 337
- RefInProgress 337
- StabIQ9401 338
- Available Enumerations 340
- Public Enum EAvailableTests 341
- Public Enum EDecimalFormat 341
- Public Enum EErrNumber 342
- Public Enum MaskType 344
- Public Enum ENullingType 344
- Public Enum PdCwTrace 344
- EPolarizationState 344
- Public Enum EPowerStatus 345
- Public Enum EState 346
- Public Enum ESubStateAcq 346
- Switch Interface—Methods 347
- InitSwitch 348
- Setting Description 349
- Switch Interface—Properties 350
- OutPorts 353
- Position 353
- RefOrlDone 356
- UseCommonRefIlPdl 358
- Analysis Interface—Methods 359
- AddRefExtZeroTrace 360
- ClearRefExtTraces 361
- ClearRefExtZeroTraces 362
- ClearResults 363
- DoAnalysis 364
- GetCorrectedIlTrace 366
- GetDriftTrace 367
- 356 IQS-12004B 368
- SetUserWavelengthRange 369
- Analysis Interface—Properties 370
- CrossTalkTables 371
- PdPrecision 372
- PowerLevels 373
- UserWavelengthRangeLowerBound 374
- UserWavelengthRangeUpperBound 374
- ChannelResult Object 375
- BandPass 376
- ChannelNumber 376
- DetectedMaskType 377
- Undefined 378
- BandPass Object 379
- BandPass—Properties 380
- OrlOnAnalysisRange 381
- OrlOnUserRange 381
- PdlOnAnalysisRange 382
- PdlOnUserRange 382
- BandPassResult Object 384
- BandPassResult—Methods 386
- BandPassResult—Properties 387
- BwUpperBound 388
- CentralWavelength 388
- Flatness 389
- 378 IQS-12004B 390
- MaxCrosstalk 391
- 380 IQS-12004B 392
- 382 IQS-12004B 394
- PowerLevel 396
- TotalCrosstalk 397
- Notch Object 398
- Notch—Properties 399
- IlOnUserRange 400
- OrlOnTransmission 400
- PdlOnTransmission 401
- Rejection 404
- NotchResult Object 405
- NotchResult—Properties 406
- 396 IQS-12004B 408
- FlatnessOnAnalysisRange 412
- FlatnessOnUserRange 412
- IlOnAnalysisRange 413
- ³ bandpass 417
- ³ undefined 417
- Bandpass Notch Undefined 417
- Bandpass Filters 418
- Measured BW1 421
- Defined BW1 421
- Central Wavelength (nm) 422
- Insertion Loss (dB) 422
- Flatness/Ripple (dB) 423
- Channel Crosstalk (dB) 424
- Notch Filters 425
- Transmission Portion of Notch 426
- Undefined Filters 427
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