Agilent Technologies 8590 L-Series Spezifikationen Seite 291
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Chapter 6 291
Troubleshooting the RF Section
6b. 8592L/94L, 8594Q, and 8593E/94E/95E/96E
To check control of the A3A5 input attenuator
The A7 analog interface assembly controls the three attenuator steps and
blocking capacitor in the A3A5 input attenuator using eight control lines.
Refer to the RF section block diagram for your analyzer at the end of Chapter ,
“Assembly Descriptions and Block Diagrams.” Each attenuator step requires
two control lines, as shown in Table 6-10 and Table 6-11. The attenuator is
connected to A7J5 on the A7 assembly with the ribbon cable, W36. Locate W36
using the top view of the analyzer in Chapter 11, “Major Assembly and Cable
Locations.”
Use a digital multimeter (DMM) and the values from Table 6-10 to check the
control voltages. Measure the voltages at the A7J5 pins on the trace side of the
A7 assembly.
Table 6-10 Input Attenuator Control Output at A7J5 for 8592L and
8593E
10 dB 1st 20 dB 2nd 20 dB 3rd 20 dB
Step Step Step Step
Attenuator
Setting (dB)
Pin 2 Pin 1 Pin 9 Pin 4 Pin 8 Pin 5 Pin 7 Pin 6
0 HLHLHLHL
10 LHHLHLHL
20 HLHLLHHL
30 LHHLLHHL
40 HLLHHLLH
50 LHLHHLLH
60 HLLHLHLH
70 LHLHLHLH
H = −10 V (with the attenuator connected at A7J5)
H = 0 V (A floating output if the attenuator is disconnected.)
L = −15 V (A low at pin 2, 9, 8, or 7 indicates that the attenuator step is in the signal path.)
- Service Guide 1
- Certification 3
- Regulatory Information 3
- Warranty 3
- Limitation of Warranty 4
- Exclusive Remedies 4
- Assistance 4
- Description 6
- Documentation Options 8
- How to Order Guides 8
- How to Use This Guide 8
- Contents 10
- Introduction 13
- Repair Service Guide 14
- Service Guide Organization 15
- Analyzer Description 16
- Firmware Revision Date 18
- Reliability Considerations 19
- Adjustment Procedures 21
- Test Equipment You Will Need 23
- Adjustment 24
- Gain for Option 010 or 28
- 30 Chapter1 30
- 1a. Display 33
- 34 Chapter2 34
- 1b. Display 36
- Procedures 37
- Centering 38
- Horizontal Hold 39
- Vertical Hold 39
- Vertical Size 40
- Vertical Linearity 40
- Brightness and Contrast 41
- 2. Sampler Match 42
- Chapter 2 43 43
- 3. 10 MHz Reference 44
- 48 Chapter2 48
- GATE TIME, 10, GATE TIME 48
- Crystal Alignment 50
- LC Alignment 53
- Final LC Centering 55
- Final BW Amplitude Check 56
- 6. Cal Attenuator Error 58
- 1 dB Step Check 60
- 4 and 8 dB Step Error 61
- 7. Log and Linear Amplifier 63
- 66 Chapter2 66
- Equipment 70
- Mixer Bias DAC Initialization 73
- 12. Second Converter 79
- Second Converter Bandpass 81
- Second Mixer Match 82
- Swept Bandpass Check 83
- 84 Chapter2 84
- Bandpass 85
- Option 713 86
- 600 MHz Adjustment 88
- Characterization 88
- Chapter 2 89 89
- 90 Chapter2 90
- Chapter 2 91 91
- 14. Comb Generator 92
- Frequency 94
- Output Power 95
- 15. Frequency Response of 96
- Chapter 2 97 97
- 100 Chapter2 100
- Making Adjustments 100
- ⇓ (step down) and 103
- 8593E/94E/95E/96E, and 8594Q 106
- Equipment Required 107
- Procedure 107
- 17. Time and Date 124
- data key 125
- Option 010 or 011 126
- 010 or 011 131
- 134 Chapter2 134
- 138 Chapter2 138
- Option 009 or 010 139
- +12 dBm 141
- 144 Chapter2 144
- Chapter 2 147 147
- Fcenter = (F1 + F2)/2 149
- Accuracy for Option 050 151
- Log Fidelity 153
- Chapter 2 159 159
- Accuracy for Option 051 160
- Chapter 2 175 175
- 176 Chapter2 176
- Making Adjustments: If 177
- 3335A Source Not Available 177
- Before You Start 178
- 6a. Cal Attenuator Error 179
- 2 dB Check 182
- 4 dB Step Check 183
- 8 dB Step Check 183
- 7a. Log and Linear Amplifier 186
- Log Fidelity Adjustment 188
- Chapter 2a 189 189
- 15a. Frequency Response of 191
- (75 Ω input) 192
- ⇓ (step down) 196
- Backing Up and Reloading 199
- Correction Constants 199
- Chapter 3 201 201
- Analyzer Initialization 204
- Set the default configuration 205
- Reset the power-on units 206
- 8595E, or 8596E Band 1 211
- 8596E Band 2 212
- Band 4 (Option 026) 213
- _______________________ 214
- Troubleshooting the Analyzer 215
- Replacement assemblies 217
- After an analyzer repair 218
- Chapter 4 219 219
- PRESET is pressed 220
- If the line fuse has blown 222
- If the fan is not operating 223
- 224 Chapter4 224
- Chapter 4 225 225
- 226 Chapter4 226
- Chapter 4 227 227
- If the display is blank 228
- Chapter 4 229 229
- 230 Chapter4 230
- Chapter 4 231 231
- 232 Chapter4 232
- Chapter 4 233 233
- CAL AMPTD 233
- Chapter 4 237 237
- FREQ CAL 237
- Routines 238
- 240 Chapter4 240
- 2V REF DETECTOR 240
- Chapter 4 241 241
- GND REF 241
- Verify the main coil driver 242
- Verify the FM coil driver 243
- Verify the sweep ramp 245
- Chapter 4 247 247
- −10V REF DETECTOR 247
- Verify the YTF driver 248
- Board Assembly 249
- Perform a free-run check 250
- 252 Chapter4 252
- IF Section Information 255
- IF Power-Level Measurement 256
- Chapter 5 257 257
- 258 Chapter5 258
- CORRECT ON OFF 258
- Chapter 5 259 259
- 262 Chapter5 262
- Assembly 266
- Chapter 5 267 267
- 268 Chapter5 268
- Chapter 5 269 269
- 270 Chapter5 270
- Chapter 5 271 271
- 276 Chapter5 276
- Chapter 5 277 277
- 278 Chapter5 278
- Chapter 5 279 279
- 280 Chapter5 280
- After an Analyzer Repair 283
- 6a. 8590L, 8591C, and 8591E 284
- Connector Pin-Out Information 285
- Replacing Major Assemblies 293
- Instrument Cover 296
- Replacement 297
- A1 Front-Frame Assembly 298
- Chapter 7 299 299
- Replacing Major Assemblies 299
- 300 Chapter7 300
- A2 Display 303
- 304 Chapter7 304
- Chapter 7 305 305
- Chapter 7 307 307
- RF Assembly 308
- Chapter 7 309 309
- A3 Front-End Assembly 311
- 312 Chapter7 312
- Chapter 7 313 313
- 314 Chapter7 314
- Chapter 7 315 315
- Chapter 7 317 317
- A7 Analog Interface Assembly 318
- Chapter 7 319 319
- Chapter 7 321 321
- A8 Power Supply 322
- Chapter 7 323 323
- 324 Chapter7 324
- Chapter 7 325 325
- 326 Chapter7 326
- Chapter 7 327 327
- Chapter 7 329 329
- Memory Board Assembly 330
- Chapter 7 331 331
- 332 Chapter7 332
- 336 Chapter7 336
- A16A1BT1 Battery 337
- 338 Chapter7 338
- Chapter 7 339 339
- Chapter 7 341 341
- A25 Counter-Lock Assembly 342
- Chapter 7 343 343
- 344 Chapter7 344
- Rear-Frame Assembly 346
- Chapter 7 347 347
- 348 Chapter7 348
- If You Have A Problem 349
- 350 Chapter8 350
- Check the Basics 351
- Service Offices 352
- Chapter 8 353 353
- 354 Chapter8 354
- Chapter 8 355 355
- 356 Chapter8 356
- Diagrams 357
- 8591C Spectrum Analyzers 359
- A5 Second Converter 360
- A9 Third Converter 360
- 10 MHz Frequency Reference 361
- A25 Counterlock 361
- A25A1 Sampler 362
- A6 YIG Tuned Oscillator (YTO) 363
- A7 Analog Interface 363
- 364 Chapter9 364
- RF and LO Section 365
- 8595E, and 8596E Analyzers 365
- Chapter 9 367 367
- A9 Third Converter Assembly 368
- A25 Counterlock Assembly 369
- Chapter 9 371 371
- Output Amplifier 372
- Bias Board 372
- IF Section 373
- A12 Amplitude Control 374
- A13 Bandwidth Filter 374
- A14 Log Amplifier 375
- 376 Chapter9 376
- A130 Narrow Bandwidth 378
- Chapter 9 379 379
- 380 Chapter9 380
- 382 Chapter9 382
- 384 Chapter9 384
- 386 Chapter9 386
- 388 Chapter9 388
- 390 Chapter9 390
- 392 Chapter9 392
- Analyzer Options and Block 393
- 394 Chapter10 394
- Table 10-1 Option Table 395
- Option Descriptions 397
- Shoulder Strap (Option 015) 398
- Shoulder Strap (Option 016) 398
- Connector (Option 026) 399
- Connector (Option 027) 399
- 400 Chapter10 400
- (Option 052) 401
- (Option 053) 401
- 402 Chapter10 402
- CT2 Demodulator (Option 110) 403
- DECT Demodulator (Option 112) 403
- Noise Figure (Option 119) 403
- 404 Chapter10 404
- (Option 163) 405
- DVB-C (Option 190) 405
- 406 Chapter10 406
- Chapter 10 407 407
- 8591E Option 010, 011 408
- 8596E Option 010 410
- 412 Chapter10 412
- Chapter 10 413 413
- 414 Chapter10 414
- Chapter 10 415 415
- SGL SWP on the 8594A 415
- 416 Chapter10 416
- If there is no output power 418
- Option 009 419
- 420 Chapter10 420
- LINE switch to on 420
- Troubleshooting Tree 421
- PREAMP ON 432
- Chapter 10 433 433
- Passcode 434
- Menu 1 of 3 435
- Menu 2 of 3 436
- Menu 3 of 3 437
- Diagnostic Data 438
- Chapter 10 439 439
- Downconverter Test 440
- IQ Constellation 442
- 8591C & 8591E ONLY 443
- 444 Chapter10 444
- 446 Chapter10 446
- 448 Chapter10 448
- 450 Chapter10 450
- HARDWARE BLOCK DIAGRAM 451
- 8594Q OPTION 190 451
- 452 Chapter10 452
- Major Assembly and Cable 453
- Locations 453
- 454 Chapter11 454
- Chapter 11 455 455
- 456 Chapter11 456
- Chapter 11 457 457
- 458 Chapter11 458
- Figure 11-6 459
- 460 Chapter11 460
- Chapter 11 461 461
- 462 Chapter11 462
- Chapter 11 463 463
- Analyzers 464
- Chapter 11 465 465
- 466 Chapter11 466
- Chapter 11 467 467
- 468 Chapter11 468
- 010 and 011) 469
- 470 Chapter11 470
- Chapter 11 471 471
- 472 Chapter11 472
- Figure 11-22 473
- 474 Chapter11 474
- Chapter 11 475 475
- (Options 009 and 010) 476
- Chapter 11 477 477
- 478 Chapter11 478
- Chapter 11 479 479
- Chapter 11 483 483
- 484 Chapter11 484
- Replaceable Parts 485
- Ordering Information 487
- Direct Mail-Order System 488
- (U.S. Only) 488
- Abbreviations 490
- Chapter 12 491 491
- 492 Chapter12 492
- Chapter 12 493 493
- 494 Chapter12 494
- Chapter 12 495 495
- Table 12-6 Replaceable Cables 511
- Ordering CLIPs 521
- Front-End Assembly 534
- Generator Assembly 535
- Front Frame Assembly 535
- 538 Chapter12 538
- 540 Chapter12 540
- 542 Chapter12 542
- 544 Chapter12 544
- 546 Chapter12 546
- 548 Chapter12 548
- 550 Chapter12 550
- 552 Chapter12 552
- Softkey Descriptions 553
- Softkey Functions 554
- Chapter 13 555 555
- 556 Chapter13 556
- −37 Hz Passcode 557
- −2001 Hz Passcode 557
- Entering a Passcode 557
- Chapter 13 559 559
- CAL TIMEBASE.Analyzers 559
- Detector 560
- Amp Cor Amplitude Correction 562
- ANALYZER GAINS Analyzer Gains 562
- AUXB Auxiliary B 562
- BINARY SPAN Binary Span 563
- CAL Calibration Key 563
- CAL AMPTD Calibrate Amplitude 564
- Chapter 13 565 565
- CAL FETCH Calibration Fetch 566
- CAL FREQ Calibrate Frequency 567
- 568 Chapter13 568
- ELATED SOFTKEYS CAL AMPTD 569
- CAL MXR Calibrate Mixer 570
- CAL STORE Calibration Store 571
- ELATED SOFTKEYS CAL STORE 572
- CAL YTF Calibrate YTF 574
- CONF TEST Confidence Test 575
- 576 Chapter13 576
- Chapter 13 577 577
- 3 dB POINTS softkey 577
- Position 579
- DACS DACs 580
- . They are used on the A16 582
- SOFTKEYS 583
- 584 Chapter13 584
- ELATED SOFTKEYS CAL FREQ 587
- DROOP Droop 588
- EDIT FLATNESS Edit Flatness 589
- EXECUTE TITLE Execute Title 590
- EXIT Exit 590
- FINE TUNE DAC Fine Tune DAC 590
- FLATNESS DATA Flatness Data 591
- FM COIL DRIVE FM Coil Drive 591
- FM GAIN FM Gain 592
- ELATED SOFTKEYS DEMOD 593
- FM OFFSET FM Offset 594
- FM SPAN FM Span 595
- 596 Chapter13 596
- FRQ DISC NORM OFF Frequency 598
- Discriminator Normal/Off 598
- IDNUM Identification Number 598
- INIT FLT Initialize Flatness 599
- 26.5 GHz 600
- MAIN COIL DR Main-Coil Drive 601
- MAIN SPAN Main Span 602
- MIXER BIAS DAC Mixer-Bias DAC 602
- PRESEL DAC Preselector DAC 603
- AMPTD UNITS, dBmV 607
- AMPTD UNITS, Volts 607
- STORE FLATNESS Store Flatness 608
- STP GAIN ZERO Step-Gain Zero 608
- SWEEP RAMP Sweep Ramp 608
- SWEEP TIME DAC Sweep-Time DAC 609
- YTF DRIVER YTF Driver 610
- YTF TUNE FINE YTF Tune Fine 611
- YTF SPAN YTF Span 612
- Analyzer Messages 613
- What's in This Chapter 614
- ADC-GND FAIL (H) 615
- Chapter 14 617 617
- REF DETECTOR 617
- ADC-TIME FAIL (H) 618
- ADC-2V FAIL (H) 618
- 620 Chapter14 620
- 2v REF DETECTOR 620
- CAL:_ _ _ (M) 621
- CAL: cannot execute CALAMP 621
- CAL: DATA NOT STORED 622
- CAL AMP NEEDED (U)(H) 622
- CAL: FM SPAN SENS FAIL (H) 622
- CAL: GAIN FAIL (H) 623
- CAL: MAIN COIL SENSE FAIL (H) 624
- CAL: NBW gain failed (H) 625
- CAL: NBW width failed (H) 625
- CAL: PASSCODE NEEDED (M) 625
- CAL: RES BW AMPL FAIL (H) 626
- CAL SIGNAL NOT FOUND (U)(H) 626
- CAL: SPAN SENS FAIL (H) 627
- CAL: USING DEFAULT DATA (M) 628
- CAL YTF FAILED (U)(H) 628
- CAL: ZERO FAIL (H) 628
- CAL FREQ data (U) 629
- Cannot reach N dB points (U) 629
- Check trigger input (U) 629
- COMB SIGNAL NOT FOUND (U)(H) 630
- COMMAND ERROR:_ _ _ (U) 631
- CONF TEST FAIL (U)(H) 631
- FAIL: XXXX XXXXXXXXXX (H) 632
- The 10-Digit Failure Code 634
- File type incompatible (U) 637
- FREQ UNCAL (U) (H) 638
- Related Assemblies 639
- Troubleshooting Hints 639
- 640 Chapter14 640
- INVALID FILENAME_ _ _(U) 641
- INVALID FILE: NO ROOM (U) 641
- INVALID IB ADRS/OPERATION (U) 641
- INVALID TRACE: _ _ _ (U) 644
- INVALID TRACE NAME: _ _ _ (U) 644
- INVALID TRACENAME: _ _ _ (U) 645
- INVALID VARDEF: _ _ _ (U) 645
- LOST SIGNAL (U) 645
- LO UNLVL (U)(H) 646
- Marker Count Widen RES BW (U) 646
- MEAS UNCAL (U) 647
- No card found (U) 647
- No points defined (U) 647
- MIXER BIAS CAL FAILED 647
- OVEN COLD (M) 648
- PARAMETER ERROR: _ _ _ (U) 648
- PASSCODE NEEDED (U) 648
- POS-PK FAIL (H) 649
- REF UNLOCK (M)(H) 649
- 650 Chapter14 650
- RES-BW NOISE FAIL (H) 651
- RES-BW SHAPE FAIL (H) 651
- RF PRESEL ERROR (H) 652
- RF PRESEL TIMEOUT (H) 652
- SAMPLE FAIL (H) 653
- SETUP ERROR (U) 653
- SIGNAL CLIPPED (U) 653
- SMPLR UNLCK (U)(H) 654
- SOFTKEY OVFL (U) 654
- SRQ _ _ _ (M) 654
- STEP GAIN/ATTEN FAIL (H) 654
- SYMTAB EMPTY (U) 655
- TABLE FULL (U) 655
- TG SIGNAL NOT FOUND (U) 656
- TG UNLVL (U)(H) 656
- VID-BW FAIL (H) 658
- YTF is not available (U) 658
- Waiting for gate input…(U) 658
- Service Equipment and Tools 659
- Static-Safe Accessories 660
- Recommended Test Equipment 661
- Recommended Service Tools 662
- 664 Chapter15 664
- 666 Chapter15 666
- Safety and Regulatory 667
- Information 667
- Safety Considerations 668
- Safety Symbols 668
- Instrument Markings 669
- General Safety Considerations 670
- 672 Chapter16 672
- Test Equipment Usage and ESD 673
- 674 Chapter16 674
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