Name: Agilent Technologies N5161A
Brand: Agilent Technologies
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Agilent N5161A/62A/81A/82A/83A MXG Signal Generators Service Guide

Troubleshooting

Boot-up Routine

1-23

Figure 1-5 Power Supply LEDs

Front Panel

Rear Panel

Front Panel

Rear Panel

DS8

DS3

DS1

Rear Panel

DS2

DS4

DS9

DS7

DS6

DS10

DS5

深圳德标仪器 135-1095-0799

Table of Contents3
Troubleshooting11
Before Troubleshooting11
ESD Information11
Contacting Agilent Technologies12
Returning a Signal Generator for Service12
Overall Block Description13
A1 Power Supply13
A2 Vector Module (N5162A/82A Only)13
A3 RF Assembly (N5161A/62A/81A/82A Only)13
A3 RF Assembly (N5183A Only)14
A4 Internal Memory Card (N5162A/82A Only)15
A5 Cpu16
A6 Inverter Interface Board16
A7 Micro Deck (N5183A Only)16
A8 Floating BNC Bypass (N5183A)17
A9 Interface Board (N5161A/62A)17
Common Circuitry for the N5181A/82A/83A17
Getting Started with Troubleshooting21
Self Test Overview23
Running Self Test24
Run Self Test Using the Front Panel (N518Xa Only)24
Accessing the MXG Web-Enabled Page26
Self Tests Do Not Run or Self Tests Run Slowly27
Boot-Up Routine28
Troubleshooting Self Test 110533
Troubleshooting Assembly Level Problems34
A1 Power Supply34
A2 Vector Module Troubleshooting (N5162A/82A Only)37
A3 RF Assembly Troubleshooting39
A4 Internal Memory Card Troubleshooting (N5162A/82A Only)40
A5 CPU Assembly Troubleshooting41
A6 DC-AC Inverter Interface Board (N5181A/82A/83A)42
A7 Micro Deck (N5183A)44
A8 Floating BNC Bypass Troubleshooting (N5183A)46
A9 Interface Board Troubleshooting (N5161A/62A)46
No Output Power or Output Power Is Unleveled (N5183A)48
Low Output Power or no Output Power < 3.2 Ghz (N5183A)49
Low Output Power or no Output Power >= 3.2 Ghz (N5183A)54
Checking ALC Operation < 3.2 Ghz (N5183A)56
Amplitude Modulation Problems (N5183A)58
Pulse Modulation Problems (N5183A)59
LCD Display Appears to be Inoperative (Dark)60
The Signal Generator Does Not Power on60
All Front Panel Leds Are Not Functioning64
The Green Front Panel Power Switch LED or Yellow Standby LED Is Not Working65
Front Panel Hardkeys or Softkeys Are Not Functioning (N5181A/82A/83A)68
The RPG Knob Is Not Functioning (N5181A/82A/83A)68
Blank or Missing Pixels (N5181A/82A/83A)70
The Screen Saver Is Not Functioning (N5181A/82A/83A)70
Boot Time Diagnostics Mode (N5161A/62A Only)70
Exceptions - Auto-Reboot, ERROR LED Blinking (N5161A/62A Only)71
The Fans Are Not Working72
No LAN Activity72
No Front Panel USB Activity72
No Rear-Panel USB Activity72
No GPIB Activity73
Error Messages73
Troubleshooting Unlocks73
508 Frac-N Loop Unlock73
512 Reference Unlocked73
515 Reference Missing74
532 PCI Bridge FPGA DCM Unlocked74
533 RF Analog FPGA DCM Unlocked74
Troubleshooting Unlevels74
Troubleshooting the RF Path (N5161A/62A/81A/82A)76
Troubleshooting the 6 Ghz Electronic Attenuator (N5161A/62A/81A/82A)76
Troubleshooting Harmonic Spurious77
Troubleshooting Harmonic Spurious by Fundamental Frequency78
To Verify Harmonic Performance at the RF Output78
Troubleshooting Non-Harmonic Spurious79
Troubleshooting Performance Test Problems80
Manual Performance Test Problems80
Troubleshooting Adjustment Test Problems (N5183A Only)81
Automated Performance Test Problems81
Replaceable Parts83
Ordering Information83
Order Parts Fast83
Shipping a Defective Assembly Back to Agilent Technologies83
Frequency and Hardware Options84
Assemblies and Hardware Options85
Front Panel Assemblies (N5161A/62A Only)89
Front Panel Assemblies (N5181A/82A/83A Only)90
Assemblies from a Top View91
Assemblies from a Bottom View94
Cables96
Cables from a Top View98
Cables from a Bottom View101
Hardware103
Front Panel View103
Disassembled Rear Panel View103
Main Chassis with Inside Covers108
Outer Instrument Cover and Associated Parts109
Miscellaneous111
Documentation111
Electrostatic Discharge (ESD) Protective Supplies111
Abbreviations Used in Part Descriptions112
Assembly Replacement113
Before You Replace an Assembly113
After Replacing or Repairing an Assembly113
Assemblies You Can Replace113
Outer Cover116
Tools Required116
Removal Procedure116
Replacement Procedure116
Inner Top Cover118
Tools Required118
Removal Procedure118
Replacement Procedure118
Inner Bottom Cover120
Tools Required120
Removal Procedure120
Replacement Procedure120
Front-Panel122
Tools Required122
Removal Procedure122
Replacement Procedure122
USB Board124
Tools Required124
Removal Procedure124
Replacement Procedure124
LCD Display (N5181A/82A/83A Only)126
Tools Required126
Removal Procedure126
Replacement Procedure126
A6 DC-AC Inverter Interface Board (N5181A/82A/83A Only)128
Tools Required128
Removal Procedure128
Replacement Procedure128
A9 Interface Board (N5161A/62A Only)130
Tools Required130
Removal Procedure130
Replacement Procedure130
Key Pad (N5181A/82A/83A Only)132
Tools Required132
Removal Procedure132
Replacement Procedure132
Power Switch133
Tools Required133
Removal Procedure133
Replacement Procedure133
Rear Panel (N5161A/81A)134
Tools Required134
Removal Procedure134
Replacement Procedure134
Rear Panel (N5162A/82A)136
Tools Required136
Removal Procedure136
Replacement Procedure136
Rear Panel (N5183A)138
Tools Required138
Removal Procedure138
Replacement Procedure138
A1 Power Supply140
Tools Required140
Removal Procedure140
Replacement Procedure140
A2 Vector Module (N5162A with Option 012 and N5182A Option 1EM with Option 012)142
Tools Required142
Removal Procedure142
Replacement Procedure142
A2 Vector Module (N5162A/82A Without Option 012)144
Tools Required144
Removal Procedure144
Replacement Procedure144
A3 RF Assembly146
Tools Required146
Removal Procedure146
Replacement Procedure146
A3 RF Assembly (N5162A, with and Without Option 012, N5182A with Option 012, and N5182A Option 1EM, with and Without Option 012)146
A3 RF Assembly - Standard (N5181A/82A)150
Tools Required150
Removal Procedure150
Replacement Procedure150
A3 RF Assembly - N5161A and N5181A Option 1EM154
Tools Required154
Removal Procedure154
Replacement Procedure154
A3 RF Assembly (N5183A Only)158
Tools Required158
Removal Procedure158
Replacement Procedure158
A3BT1 Battery162
Tools Required162
Removal Procedure162
Replacement Procedure162
A4 Internal Memory Card (N5162A/82A Only)164
Tools Required164
Removal Procedure164
Replacement Procedure164
A5 Cpu166
Tools Required166
Removal Procedure166
Replacement Procedure166
A7 Micro-Deck (N5183A Only - Standard)168
Tools Required168
Removal Procedure168
Replacement Procedure168
A7 Micro-Deck (N5183A Only - Option 1EM)171
Tools Required171
Removal Procedure171
Replacement Procedure171
A8 Floating BNC Bypass (N5183A Only)174
Tools Required174
Removal Procedure174
Replacement Procedure174
RF Connector (N5183A Only - Standard)176
Tools Required176
Removal Procedure176
Replacement Procedure176
B1 Thru B4 Fans178
Tools Required178
Removal Procedure178
Replacement Procedure178
Post-Repair Procedures and Performance Verification181
Post Repair Procedures181
Assembly Installation and Removal Overview182
Service Procedure183
Post-Repair Overview184
Manual Performance Tests184
Adjustments (N5183A Only)186
Automated Performance Verification Tests186
Performance Verification188
I/Q Calibration (N5162A/82A Only)188
Running Self Test188
Self Test Failure189
Relative Frequency Range and Accuracy Verification (N5161A/62A 1 /81A/82A Only)190
Frequency Counter Procedure (N5161A/62A/81A/82A)190
Spectrum Analyzer Procedure191
Leveled Output Power Verification (N5161A/62A 1 /81A/82A Only)193
N5161A 1 /81A Output Power Test Procedure193
N5162A/82A Output Power Test Procedure195
Safety and Regulatory197
General Safety Considerations197
Lithium Battery Disposal198
Assistance198
Certification198
Instrument History199
How to Use this Chapter199
September 2009199
January 2009 (N5161A/62A/81A/82A/83A Only)199
August 2008 (N5161A/62A/81A/82A/83A Only)199
April 2008 (N5182A/83A Only)199
December 2007199
November 2007199
October 2007 (N5181A/82A Only)199
May 2007 (N5181A/82A Only)199
December 2006 (N5181A/82A Only)200
September 2006 (N5181A/82A Only)200

Brand	Agilent Technologies
Model	N5161A
Category	Portable Generator
Language	English

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