Name: Agilent Technologies 8753ET
Brand: Agilent Technologies
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13-22 Chapter 13

Replaceable Parts

Replaceable Part Listings

8753ES Option 014: Cables, Top

Figure 13-9 8753ES Option 014: Cables, Top

Item Option HP/Agilent

Part Number

Qty Description

014

08753-20951

1 CABLE, SOURCE to RF OUT

2 08753-20291

1 CABLE, R CHANNEL OUT to A3 SOURCE

014

08753-20954

1 CABLE, B SAMPLER IN to B SAMPLER

4 014 08753-20179 1 CABLE, A SAMPLER IN to A SAMPLER

5 08753-20290 1 CABLE, R CHANNEL IN to R SAMPLER

Warranty Information2
Safety Notes3
Required Tools and Equipment16
Principles of Microwave Connector Care21
Analyzer Options Available22
Option 075, 75 Ohm System Impedance (8753ES Only)23
Service and Support Options24
Option W5425
Introduction28
System Verification Procedure29
Certificate of Calibration30
Agilent 8753ES System Verification and Performance Tests31
ES Performance Tests39
Test Port Output Frequency Range and Accuracy40
External Source Mode Frequency Range43
Test Port Output Power Level Accuracy45
Test Port Output Power Linearity48
Minimum R Channel Level54
Test Port Input Noise Floor Level58
Test Port Input Frequency Response62
Test Port Crosstalk71
Uncorrected Port Performance76
System Trace Noise82
Test Port Receiver Magnitude Dynamic Accuracy85
Test Port Receiver Magnitude Compression98
Test Port Receiver Phase Compression101
Test Port Output/Input Harmonics (Analyzers with Option 002)104
Harmonic Measurement Accuracy (Analyzers with Option 002)109
Agilent 8753ET System Verification and Performance Tests113
ET Performance Tests121
Reflection Test Port Output Frequency Range and Accuracy122
External Source Mode Frequency Range124
Reflection Test Port Output Power Level Accuracy126
Reflection Test Port Output Power Linearity (Analyzers Without Option 004)128
Reflection Test Port Output Power Linearity (Analyzers with Option 004)134
Minimum R Channel Level140
Transmission Test Port Input Noise Floor Level145
Transmission Test Port Input Frequency Response148
Test Port Crosstalk153
Uncorrected Port Performance157
System Trace Noise162
Agilent 8753ES Performance Test Records167
Agilent 8753ET Performance Test Records187
Post-Repair Procedures205
A9 Switch Positions208
Source Default Correction Constants (Test 44)209
Source Pretune Default Correction Constants (Test 45)210
Analog Bus Correction Constants (Test 46)211
Source Pretune Correction Constants (Test 48)212
RF Output Power Correction Constants (Test 47)213
IF Amplifier Correction Constants (Test 51)216
ADC Offset Correction Constants (Test 52)217
Sampler Magnitude and Phase Correction Constants (Test 53)218
Power Sensor Calibration Factor Entry219
Determine the Insertion Loss of the Cable at 1 Ghz (8753ES)220
Determine the Insertion Loss of the Cable at 1 Ghz (8753ET)221
Sampler Correction Constants Routine222
Cavity Oscillator Frequency Correction Constants (Test 54)228
Spur Search Procedure with a Filter230
Spurs Search Procedure Without a Filter231
Serial Number Correction Constants (Test 55)233
Option Numbers Correction Constants (Test 56)234
Initialize Eeproms (Test 58)235
EEPROM Backup Disk Procedure236
Correction Constants Retrieval Procedure237
Loading Firmware238
Loading Firmware into a New CPU240
Fractional-N Frequency Range Adjustment242
Frequency Accuracy Adjustment245
High/Low Band Transition Adjustment249
Fractional-N Spur Avoidance and FM Sideband Adjustment251
Source Spur Avoidance Tracking Adjustment254
Unprotected Hardware Option Numbers Correction Constants256
Sequences for Mechanical Adjustments257
How to Set up the High/Low Band Transition Adjustments258
Assembly Replacement Sequence265
Having Your Analyzer Serviced266
Step 1. Initial Observations267
Step 2. Operator's Check268
Required Equipment and Tools269
Step 3. GPIB Systems Check270
If Using an External Disk Drive271
Step 4. Faulty Group Isolation272
Power Supply273
Digital Control274
Verify Internal Tests Passed275
Source276
No Oscilloscope or Power Meter? Try the ABUS277
Receiver (8753ES)279
Receiver Error Messages280
Receiver (8753ET)281
Receiver Error Messages283
Accessories284
Troubleshooting 8753ES Option 014285
Setup287
Symptom Example Plots288
Symptoms290
Power Supply Troubleshooting298
Assembly Replacement Sequence299
Simplified Block Diagram300
Start here301
Measure the Post Regulator Voltages302
If the Green LED of the A15 Is Not on Steadily303
Check the A8 Post Regulator304
Verify the A15 Preregulator306
Check for a Faulty Assembly307
Check the Operating Temperature308
Remove A8, Maintain A15W1 Cable Connection309
Briefly Disable the Shutdown Circuitry310
Inspect the Motherboard312
Error Messages313
Check the Fuses and Isolate A8314
Fan Troubleshooting315
Intermittent Problems316
Digital Control Troubleshooting319
Digital Control Group Block Diagram320
Assembly Replacement Sequence321
CPU Troubleshooting (A9)322
Checking A9 CPU Red LED Patterns323
Display Troubleshooting (A2, A18, A19, A27)324
Troubleshooting a White Display327
Troubleshooting a Display with Color Problems328
Front Panel Troubleshooting (A1, A2)329
Identify the Stuck Key330
Inspect Cables332
Run the Internal Diagnostic Tests333
If the Fault Is Intermittent335
GPIB Failures336
Source Troubleshooting339
Assembly Replacement Sequence340
Before You Start Troubleshooting341
Power342
Phase Lock Error343
A4 Sampler/Mixer Check345
A12 Reference Check349
A13/A14 Fractional-N Check357
A7 Pulse Generator Check362
A11 Phase Lock Check365
Source Group Troubleshooting Appendix367
Broadband Power Problems368
Receiver Troubleshooting371
Assembly Replacement Sequence372
Receiver Failure Error Messages373
Troubleshooting When All Inputs Look Bad374
Check the 4 Mhz REF Signal375
Check A10 by Substitution or Signal Examination376
Troubleshooting When One or more Inputs Look Good378
Check the Trace with the Sampler Correction Constants off379
Check 2Nd lo Signal at Sampler/Mixer380
Accessories Troubleshooting383
Assembly Replacement Sequence384
Inspect the Accessories385
Inspect the Error Terms386
Cable Test387
Service Key Menus392
Service Feature Menus405
Firmware Revision Softkey430
GPIB Service Mnemonic Definitions431
Analog Bus Codes432
Error Messages433
Error Terms441
Error Terms Can also Serve a Diagnostic Purpose442
Error Correction443
Error Term Descriptions444
How the Analyzer Works454
The Built-In Test Set455
A Close Look at the Analyzer's Functional Groups456
Power Supply Theory457
A8 Post Regulator458
Digital Control Theory460
A1 Front Panel462
A18 Display463
A27 Inverter464
Source Theory Overview465
A3 Source466
Source High Band Operation468
Source Operation in Other Modes and Features470
Signal Separation (8753ET)474
Signal Separation (8753ES)476
Receiver Theory478
A4/A5/A6 Sampler/Mixer480
A10 Digital if481
Replacing an Assembly484
Rebuilt-Exchange Assemblies485
Ordering Information486
Replaceable Part Listings488
ET: Major Assemblies, Top491
ES: Major Assemblies, Top493
ET: Major Assemblies, Bottom495
ES: Major Assemblies, Bottom496
ES Option 014: Major Assemblies and Cables, Bottom497
ET: Cables, Top499
ES: Cables, Top501
ES Option 014: Cables, Top503
ET: Cables, Bottom505
ES: Cables, Bottom507
ET: Cables, Front509
ES: Cables, Front511
ET/ES: Cables, Rear513
ET/ES: Cables, Source515
ET/ES: Front Panel Assembly, Outside517
ET/ES: Front Panel Assembly, Inside519
ET: Rear Panel Assembly521
ES: Rear Panel Assembly523
ET/ES: Rear Panel Assembly, Option 1D5525
ET/ES: Hardware, Top527
ET: Hardware, Bottom529
ES: Hardware, Bottom530
ET/ES: Hardware, Front531
ET: Hardware, Test Set Deck532
ES: Hardware, Test Set Deck533
ET/ES: Hardware, Disk Drive Support534
ET/ES: Hardware, Memory Deck535
ET/ES: Hardware, Preregulator536
ET/ES: Chassis Parts, Outside537
ET/ES: Chassis Parts, Inside539
Miscellaneous540
Replacing an Assembly546
Procedures Described in this Chapter547
Line Fuse548
Covers549
Front Panel Assembly551
Front Panel Keyboard and Interface Assemblies (A1, A2)553
Display, Display Lamp and Inverter Assemblies (A18, A27)555
Rear Panel Assembly557
Rear Panel Interface Board Assembly (A16)559
A3 Source Assembly561
A4, A5, A6 Samplers and A7 Pulse Generator563
A8, A10, A11, A12, A13, A14 Card Cage Boards565
A9 CPU Board567
A9BT1 Battery569
A15 Preregulator571
A17 Motherboard Assembly573
A19 Graphics Processor577
A20 Disk Drive Assembly579
A20 Disk Drive Assembly Replacement581
Test the Disk-Eject Function, and Adjust if Required582
A21, A22 Test Port Couplers (8753ES Only)583
A21 Dual Directional Coupler (8753ET Only)585
A23 LED Board (8753ES Only)587
A24 Transfer Switch (8753ES Only)589
A25 Test Set Interface (8753ES Only)591
A26 High Stability Frequency Reference (Option 1D5) Assembly593
B1 Fan Assembly595
Post-Repair Procedures596
General Information599
Shipment for Service600
Safety Symbols601
Instrument Markings602
Safety Considerations603
Servicing604
General605

Brand	Agilent Technologies
Model	8753ET
Category	Measuring Instruments
Language	English

Agilent Technologies 8753ET Service Guide

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