About this Manual
 HP Part No -90218 Supersedes
Fia Hewlett
Page
 Warranty
Certification
Regulatory Information
 Assistance
Safety Notes
 Prevent electrical shock, do not remove covers
General Safety Considerations
 How to Use This Guide
Documentation Outline
This guide uses the following conventions
 Contents
 Contents-2
 Contents-3
 Contents-4
 Contents-5
 Contents-6
 Contents-7
 Controller Section
 Contents-9
 Contents-10
 Figures
 Contents-12
 Contents-13
 Contents-14
 Tables
Contents-15
 PLL
 Serial Numbers and Repair Information
Serial Number Label Example
General Information l-1
 A21 Ocxo
Instrument Variations
Table l- 1. Instrument Variations
General Information
 General Information l-3
HP 85629B Test and Adjustment Module
 Service Kit
Table l-2. Service Kit Contents
Electrostatic Discharge
 General Information l-5
Reducing Potential for ESD Damage
 Static-Safe Accessories
Returning Instruments for Service
Static-Safe Accessories
Service Tag
 Other Packaging
 9211-6969 Outer Carton 9220-5073 Pads 9220-5072 Top Tray
 General Information l-9
Recommended Test Equipment
 Instrument Sources
Table l-4. Recommended Test Equipment
 General Information l-l
Recommended Test Equipment
 Instrument Critical Specifications Recommended Use
 Instrument Accessories
 PAV
 PAM
 Sales and Service Offices
 US Field Operations
Hewlett-Packard Sales and Service Offices
 Introduction
Adjustment Procedures
 Test Equipment
Safety Considerations
Which Adjustments Should Be Performed?
Adjustable and Factory-Selected Components
 Adjustment Tools
Instrument Service Position
8710-0033
 A5 if
Related Adjustments
 A10 Rythm
 Adjustable Components
 VCO Range
HV ADJ
FM Span
Smpl Match
 Factory Selected Components
 Adjustment Indicator
Using the TAM
 YTO
TAM Adjustments
 Required Test Equipment for TAM
Adjustment Procedures 2-l
 Front End Cal adjustment
 Related Performance Test
High Voltage Power Supply Adjustment
Assembly Adjusted
High Voltage Power Supply Adjustment
 Equipment
Procedure
 Display Adjustment
Display Adjustment
 Preliminary Adjustments
Cutoff Adjustment
Deflection Adjustments
 CRT Adjust Pattern Adjustment Procedures
 Intensity Adjustments
 A2 Display Adjustment Locations
Fast Zero Span Adjustments
 Press SAVEI, Save State ,and State
 If Bandpass Adjustment
If Bandpass Adjustment
 TAM Connector Pin Locations
LC Bandpass Adjustments
 Factory-Selected LC Filter Capacitors
Xtal Bandpass Adjustments
 A5T202 Xtal CTR
Factory-Selected Xtal Filter Capacitors
Xtal Factory-Selected Capacitor Selection
A5T200 Xtal CTR
 If Bandpass Adjustment 10. Capacitor Part Numbers
 Related Performance Tests
If Amplitude Adjustments
 If Amplitude Adjustment Locations
If Amplitude Adjustments
 A5 Reference Attenuator Adjustment
 A5 Adjustment Verification
 DC Log Adjustment Setup Adjustment Procedures
DC Log Amplifier Adjustments
 DC Log Amplifier Adjustments
A4 Limiter Phase Adjustment
 Log Amplifier Adjustments
A4 Linear Fidelity Adjustment
 Press -,a, if AlI on OFF OFF, AD3 Curr if State
A4 LOG Fidelity Adjustment
 11. Sampler Adjustment Setup
Sampling Oscillator Adjustment
 Sampling Oscillator Adjustment
Sampler Match Adjustment
Sampling Oscillator Adjustment
 Sampling Oscillator Adjustment 1. Sampling Adjustments
 YTO Adjustment
YTO Adjustment
 07SAVE Save STATE, State RECALL, Recall STATE, State
YTO Main Coil Adjustments
 14. YTO Adjustment Locations
YTO FM Coil Adjustments
 15. First LO Distribution Amplifier Adjustment Setup
LO Distribution Amplifier Adjustment
 18. TAM Connector Pin Locations
LO Distribution Amplifier Adjustment
 DAC value for 4.60 GHz =
 Frequency Response Adjustment
Automated Procedure Available
Frequency Response Adjustment
 17. Frequency Response Adjustment Setup
 MHz RF gain DAC value
 Frequency‘Response Adjustment
 Calibrator Amplitude Adjustment
Calibrator Amplitude Adjustment
 MHz Reference Adjustment-OCXO Non-Option
 19 MHz Reference Adjustment Setup and Adjustment Location
MHz Reference Adjustment-OCXO Non-Option
 OFF
 MHz Reference Adjustment-TCXO Option
MHz Reference Adjustment-TCXO Option
 Procedure
 Demodulator Adjustment
Demodulator Adjustment
 SPAN, Zero Span
 22. Demodulator Adjustment Locations Adjustment Procedures
 23. External Mixer Bias Adjustment Setup
External Mixer Bias Adjustment Non-Option
 External Mixer Amplitude Adjustment Non-Option
External Mixer Amplitude Adjustment Non-Option
 Supplied with HP 8481D
 EXT MXR REF CAL
 25. Rythm Adjustment Setup
YIG-Tuned Filter/Mixer Rythm Adjustment
 YIG-Tuned Filter/Mixer Rythm Adjustment
 Save Presel PK
 MHz PLL Adjustment
MHz PLL Adjustment
 27 MHz PLL Adjustment Location
 MHz PLL Adjustment
 MHz Reference Adjustment
 Frequency Response Adjustment Software 3-l
Frequency Response Adjustment Software
 Controller Computer
Frequency Response Adjustment Software
Getting Started
Spectrum Analyzers
 Warmup Time
Test Equipment Warmup Spectrum Analyzer Warmup
Required Test Equipment Summary
 HP-IB Cables
Computer Controller Setup
Adjustment Setups
Equipment Connections
 Using Frequency Response Adjustment Software
Loading the Program
Program Operation
 System Mass Storage File Location
Power Sensors
Conditions Menu
Test Record Header Information
 Storing and Loading the Conditions File
Setting HP-IB Addresses
 Querying the Spectrum Analyzer Serial Number
Getting to the Adjust Menu
Exiting Frequency Response Adjustment
Verifying the HP-IB
 Sensor Utilities Menu
Adding a Power Sensor Data File
 Adjust Menu
 Calibrate Power Sensor
Single Test
List Equipment
 List Files
Frequency Response Adjustment Menu Softkeys
 Single Test Cal Sensor List Equip Cond Menu
 Assemblies Adjusted
 APC 3.5 Cable 0 E’
 Error Messages Beginning with Alphabetic Characters
Frequency Response Adjustment Error Messages
 No HP-IB address listed for DUT
Power meter reads value dBm
File filename not found
Insufficient equip. to do test test number test name
 Error Messages Beginning with Numeric Characters
 Error Messages Beginning with Variables
 Assembly Replacement
Assembly Replacement
 Access to Internal Assemblies
 Required Tools
Cable Color Code
 Removal/Replacement
Procedure I. Spectrum Analyzer Cover
 Procedure 2. Al Front Frame/Al8 CRT
Procedure 2. Al Front Frame/Al8 CRT
Removal
 Procedure 2. Al Front Frame/Al8 CRT
 Instrument
Discharging High Voltage on the CRT Assembly Replacement
 A9, A18, and Line-Switch Assembly Mounting Screws
 Front frame Mounting Screws
 Installing the CRT and front frame Assemblies
Replacement
 Placing the CRT into the Front Frame
Assembly Replacement 4-l
 Procedure 2. Al Front Frame/Al8 CRT
 Procedure 3. AlAl Keyboard/Front Panel Keys
Procedure 3. Al Al Keyboard/Front Panel Keys
 Procedure 4. AlA RPG
 Procedure 5. A2, A3, A4, and A5 Assemblies
Procedure 5. A2, A3, A4, and A5 Assemblies
Assembly Replacement 4
 A2, A3, A4, and A5 Assembly Removal
 4P3
 Assembly Cables 2 Assembly Replacement
 Coaxial Cable Clip
Procedure 5. A2, A3, A4, and AS Assemblies
 10. HP-IB and AlAl Wl Cable Placement Assembly Replacement
 Procedure 6. A6 Power Supply Assembly
Procedure 6. A6 Power Supply Assembly
 Replacement
 1. A6 Power Supply Connections Assembly Replacement
 12. Power Supply Cover Assembly Replacement
 Procedure 7. A6Al High Voltage Assembly
Procedure 7. A6Al High Voltage Assembly
 13. Al6 Fast ADC and Al7 CRT Driver Mounting Screws
 Procedure 7. A6Al High Voltage Assembly
 Procedure 8. A7 through Al3 Assemblies
 14. HP 6562E Assembly Locations
Procedure 6. A7 through Al3 Assemblies
 A7 First LO Distribution Amplifier
 Assembly Replacement 4-3
A8 Low Band Mixer
A8 Low Band Mixer
 A9 Input Attenuator
 A9 Input Attenuator
 16. A10 Mounting Screws
A10 YIG-Tuned Filter/Mixer Rythm
 All YTO
All YTO
 Al3 Second Converter
 Procedure 9. Al4 and A15 Assemblies
Procedure 9. Al4 and Al5 Assemblies
 Procedure 9. Al4 and Al5 Assemblies
 19. Al4 and Al5 Assembly Cables Assembly Replacement
 20. Al6 and Al7 Mounting Screws Assembly Replacement
Procedure 10. Al6 Fast ADC and Al7 CRT Driver
 21. Al6 Cable Routing Assembly Replacement
Procedure 10. Al6 Fast ADC and Al7 CRT Driver
 Procedure 11. Bl Fan
 Procedure 12. ET1 Battery
Procedure 12. BTI Battery
 Procedure 13. Rear Frame/Rear Dress Panel
 22. Main Deck Screws
Procedure 13. Rear Frame/Rear Dress Panel
 W24, coax 5 W23, coax
 23. A6 Power Supply Cover Assembly Replacement
 Personnel and damage to the instrument
Procedure 14. W3 Line Switch Cable
 24. W3 Dress and Connection to A6 Power Supply
Procedure 14. W3 Line Switch Cable
 Screw Quantity
 Standoff
 26. W3 Cable Connector
Replacement Using Contact Removal Tool, HP part number
 Replacement without Contact Removal Tool
 27. Side Frame Mounting Screws
 Procedure 15. Eerom A2U500
Procedure 15. Eerom A2U500
 28. A21 Ocxo Mounting Screws Assembly Replacement
Procedure 16. A21 Ocxo
 Procedure 16. A21 Ocxo
 Ordering Information
Direct Mail-Order System
Replaceable Parts 5-l
 Replaceable Parts
Parts List Format
Firmware-Dependent Part Numbers
Direct Phone-Order System
 Reference Designations, Abbreviations and Multipliers
 Reference Designations, Abbreviations, and Multipliers 2
 Reference Designations, Abbreviations, and Multipliers 3
 Reference Designations, Abbreviations, and Multipliers 4
Manufacturers Code List
 Qty
 Front Frame Assembly
Front Handle ASS’Y Mount Flange
SLIDE-CHAS 25-IN-LG 21.84-IN-TRVL
 Interface Assembly
Cable Assembly Ribbon
Cable Assembly Probe POWER/LED
Controller Assembly
 Not Assigned Line Filter Assembly
CRT Driver Assembly CRT Assembly
HP-IB Assembly
Battery 3.0 V 1.2 A-HR Lithium
 If 1 Bottom
 Cable ASSEMBLY, A7/A8 Drive
Power CABLE, Ribbon
Cable Assembly Line Switch
Cable ASSEMBLY, Speaker
 Cable ASSEMBLY, Coax 6, 0 Span Video
Cable ASSEMBLY, A10 Rythm Drive
Cable ASSEMBLY, Coax 97, LO Sweep
Cable ASSEMBLY, Coax
 Cable ASSEMBLY, SEMI-RIGID, RF Input
Cable ASSEMBLY, SEMI-RIGID, 1ST LO
Cable ASSEMBLY, SEMI-RIGID, 1ST Mixer
Cable ASSEMBLY, Coax 89, CAL OUT
 Parts Identification, Assembly Mounting
 Parts List, Cover Assembly
 SPACER, CRT TUBE, CRT
Parts List, Main Chassis
 Parts List, RF Section
 Parts List, Front Frame
Probe Power Jack
00000
 Keycap Line
SCREW-MACHINE Assembly M3 X 0.5 12MM-LG
Rubber Keypad Includes Keycaps
LED-LAMP LUM-INT=560UCD IF=SOMA-MAX
 Line Filter Module
Parts List, Rear Frame
5062-7755 3 1 Battery Holder Includes Wires
Monofluoride
 \ \
 ‘v’
 FI c
 P3$CES
 ‘\‘\
 Major Assembly and Cable Locations
Major Assembly and Cable Locations
 A21OCXO
FL3 not Assigned FL4
 Cables
 Hinged Assemblies
 1W2 W52
 I T E
 Bottom View Al5 Unfolded Major Assembly and Cable Locations
 WI8 Aiai
 Al6 Fast ADC Option Major Assembly and Cable Locations
 \\\
 Rear View Major Assembly and Cable Locations 6-l
 Assembly Level Text
Block Diagrams
General Troubleshooting 7-l
 Pad
Assembly Test Points
General Troubleshooting
Ribbon Cables
 @AMPLIFIER
 Ribbon Cable Connections 1 General Troubleshooting
 Ribbon Cable Connections 2 General Troubleshooting
 Service Cal Data Softkey Menus
 PKEq
Service Cal Data Menu
 Troubleshooting to a Functional Section
 CRT
Location of Assembly Troubleshooting Text
Sloda
Rythm
 Loading the software
TAM Test and Adjustment Module
 HP-IB addresses
Data files and system mass storage files
Executing a test
 TAM Requirements
 Erroneous Results
Test Connectors
Revision Connectors
Inconsistent Results
 ADC/lnterface Check
Automatic Fault Isolation
Display/Power Supply
Controller Check
 Manual Probe Troubleshooting
LO Control Check
RF Low Band Check
 Calibration Oscillator Troubleshooting Mode
RF Path Fault Isolation
 Viewing Multiple Messages
Error Messages
 Error Message Elimination
System Analyzer Programming Errors 100 to
 System
ADC Errors 200 to
 YTO Loop Errors 300 to
Roller PLL Errors 302 to
LO and RF Hardware/Firmware Failures 300 to
 General Troubleshooting
 General Troubleshooting
 YTO Loop Errors 317 to
 Roller Oscillator Errors 321 to
 OFF Unlk Freq ACC
YTO Loop Error
 Fractional N PLL
MHz Reference Loop
YTO Leveling Loop
Sampling Oscillator
 Span Accuracy Calibration Errors 356 to
YTO Loop Settling Errors 351 to
 Automatic if Errors 400 to
 RBW
 RBW 3K
 LIN Ampl LOG Ampl
General Troubleshooting 7-3
 General Troubleshooting
 Ampl 1M
 General Troubleshooting
 General Troubleshooting
 300 MHz
 System Errors 600 to
Digital and Checksum Errors 700 to
Eerom Checksum Errors 700 to
 ROM U306 ROM U307 ROM U308 ROM U309 ROM U310 ROM U311
Program ROM Checksum Errors 705 to
 Microprocessor Error 7
Battery Problem
Model Number Error
RAM Check Errors 711 to
 System Errors 750 to
Fast ADC Error
Option Module Errors 800 to
 TG Unlvl
User-Generated Errors 900 to
 Functional Sections General Troubleshooting
Block Diagram Description
 A7 Sloda
RF Section
 A10 YIG-Tuned Filter/Mixer
Al3 Second Converter
Second if Amplifier part of A15
 Flatness Compensation Amplifiers part of AM
Third Converter part of A15
 YTO PLL A7, All, part of A14, part of A15
Synthesizer Section
Sweeping the First LO
Reference PLL part of A15
 Offset Lock Loop part of A15
Phase Lock Loops Fractional N PLL part of A14
 If Section
A4 Log Amplifier/Cal Oscillator Assembly
 A5 if Assembly
ADC/lnterface Section
Log Expand/Video Functions
 Controller Section
Triggering
Firmware
 Al7 CRT Display Driver
Display/Power Supply Section
A6 Power Supply
Display ASM
Page
Page
Page
Page
 ADC/lnterface Section
ADC/lnterface Section
 W2 Control Cable Connections
 GND RF Gain LO3 ERR LVFC-ENABLE FC ERR YTO ERR
ADC/lntetface Section
GND Scan Ramp Video Trigger DAC2
 A3 Test Connectors
Troubleshooting Using the TAM
 ADC ASM ADC MUX
Automatic Fault Isolation References
 TAM Tests versus A3 Test Connectors
 Keyboard/RPG Problems
Keyboard Interface
Keyboard Matrix
 RPG Interface
 Free RUN Video Line External
Triggering or Video Gating Problems
Counter Frequencies
Trigger MUX Truth Table
 10 ADC/lnterface Section
 Level
Yiiqx5q
 12 ADC/lntertace Section
Preselector Peaking Control Real Time DAC
 ADC/lntefface Section
Flatness Control RF Gain DACs
 14 ADC/lnterface Section
A3 Assembly Video Circuits
 Log Offset/Log Expand
 16 ADC/lnterface Section
Video MUX
 Video Filter
 Video Filter Buffer Amplifier
Latch Outputs
18 ADC/lnterface Section
 Positive/Negative Peak Detectors
Select Desectdr POS Peak mode
 Peak Detector Reset
HMUX-SELO/l versus Detector Mode
20 ADC/lnterface Section
 ADC MUX
Rosenfell Detector
 22 ADC/lnterface Section
Logic Levels at A3U108
 Track and Hold
Variable Gain Amplifier VGA
 A3 Assembly ADC Circuits
ADC Control Signals
24 ADC/lnterface Section
 ADC Start/Stop Control
 26 ADC/lnterface Section
ADC ASM
 Ramp Counter
 A3 Assembly Control Circuits
Analog Bus Drivers
28 ADC/lnterface Section
 Analog Bus Timing
 30 ADC/lnterface Section
Interface Strobe Select
10. Demultiple er A3U410 Truth Table
1. Demultiple er A3U500 Truth Table
 Video Input Scaling Amplifiers and Limiter
Al6 Assembly Fast ADC Circuits Option
 32 ADC/lnterface Section
Bit Flash ADC
 NEG
Peak/Pit Detection
Byte Static RAM
POS
 34 ADC/lntertace Section
Al6 Assembly Fast ADC Control Circuits Option
CPU Interface and Control Registers
13. Control Word at Primary Address U3 and U4
 Lloadaddr
Vtrig POL
Lsample
Ladcen
 Reference Clock
38 ADC/lnterface Section
Hswp
 Trigger
Clock and Sample Rate Generator
 Bit 32 K Circular Address Counter
Bit Post-Trigger Counter
 Video Trigger Comparator
Page
 QEL--QWa5-w---w
 If -l
If Section
 If Section
 A4 LOG AMP/CAL OSC
 Troubleshooting A5 with the TAM
Troubleshooting the Log Amplifier with the TAM
 TAM Tests versus Test Connectors
 Ifdac
Fdac
 Cal fist Troubleshooting Nude
 Troubleshooting the Cal Oscillator with the TAM
 Sweep Width Settings
Automatic if Adjustment
 Parameters Adjusted
 Requirements
 Performance Test Failures
If Gain Uncertainty Performance lest
Scale Fidelity Performance lest
 Log Amplifier P/O A4 Assembly
Resolution Bandwidths Performance Tests
Log Amplifier
 If Gain Application Guidelines ATTEN=lO dB
Linear Amplifiers
 Video Off set
 Video Output
Frequency Counter Prescaler/Conditioner
AM/FM Demodulator
 MHz if Filters
KHz if Filters
 MHz Vcxo
KHz and 10.7 MHz if Filters
 Input Switch
LO Switch
Synchronous Detector
 Log Off set/Gain Compensation
 A5 if Assembly
 KHz
If Signature
 If Adjust Signature If Section
 Detailed if Adjust Signature
 LOG Ofysets
 510 CjBm,-‘-ifTiN= dB 0 dBm II ill M P L E IIilI
Common if Signature Problems
 L3klB
 11. Region B Amplitude Variation
 500
MHz Resolution Bandwidth Problems
 KHz and 10 kHz Resolution Bandwidth Problems
KHz Resolution Bandwidth Problems
 Step Gains
15. Faulty Crystal Symmetry
 Cal Oscillator P/O A4 Assembly
 Inadequate CAL OSC Amptd Range
Cal Oscillator Unlock at Beginning of if Adjust
 Hz to 3 kHz Resolution Bandwidth Out of Specification
 16. Output Waveform, 10 kHz Resolution Bandwidth If Section
 17. Output Waveform, 3 kHz Resolution Bandwidth
 19. Output Waveform, 300 Hz Resolution Bandwidth
 Low-Pass Filter
Sweep Generator
AM/FM Demodulation, Audio Amplifier, and Speaker
 If Section
Page
Page
Page
 Controller -l
Controller Section
 2 Controller Section
MSl, MS3 through MS6, MS8
 Controller Section
A2 Test Connectors
 Display Problems
Digital Signature Analysis DSA
Line Generators
 Line Generator Output Waveforms
Blanking
 Blanking Waveforms 6 Controller Section
 Expanded Blanking Waveforms
Display Jumbled or Trace Off Screen
 IO-8 Controller Section
Switch Driver Waveform Lchar
 Distorted X/Y Line Generator Waveforms
 Intensity
Bad Characters or Graticule
Lo-10 Controller Section
 Delta X Waveform
Long Lines Dimmer Than Short Lines
 Lo-12 Controller Section
Analog Zero-Span Problems Non-Option
 Controller Section lo
Frequency-Count Marker Problems
 Frequency Counter
Gate Times
Lo-14 Controller Section
 Controller Section lo-15
State- and Trace-Storage Problems
 Lo-16 Controller Section
Keyboard Problems
Page
 Synthesizer l-1
Synthesizer Section
 Synthesizer Section
A21 Ocxo
 TAM Connector Pin Locations L. Measured Signal Line Location
Al4 and Al5 Test Connectors
 4 Synthesizer Section
 Synthesizer l-5
 YTF
6 Synthesizer Section
DAC MS7
FAV
 MS8 MS2 MS5 MS6 MS7
OFL
AGC
MS1 MS2 MS3 MS4 MS6 MS8 MS5,MS7,MS8
 YTO PLL
Troubleshooting Test Setup
Confirming a Faulty Synthesizer Section
8 Synthesizer Section
 Synthesizer l-9
Center Frequency Tuning Values
Check A3 ADC MUX Function Block steps
Check A14J301 10 MHz reference input steps
 Check First LO steps
Check Al4 frequency control assembly steps
 Synthesizer -l
YTO Loop Test Setup Check Al5 RF assembly steps
 12 Synthesizer Section
4. Sampler and Sampling Oscillator Test Setup
 Synthesizer
General PLL Troubleshooting
PLL Locked at Wrong Frequency
Sampling Oscillator Test Frequencies
 PLL Locked at Wrong Frequency Synthesizer Section
REF- \ Y
 Synthesizer l-15
Unlocked PLL
 Check 100 MHz VCXO, tripler, and doubler steps
Troubleshooting
Unlocked Reference PLL
Operation
 Check phase/frequency detector steps
Check 10 MHz reference to phase/frequency detector steps
 Check the 100 MHz lock loop integrator steps
 Check level at amplifier input steps
Third LO Driver Amplifier
 20 Synthesizer Section
Unlocked Offset Lock Loop Sampling Oscillator
Check loop references steps 1
Check levels into mixer steps
 Sampling Oscillator PLL Divide Numbers
 Check path to phase/frequency detector steps
 Unlocked YTO PLL
 7. Amplifier Polarities
 7. Troubleshooting an Unlocked YTO PLL Synthesizer l-25
Troubleshooting an Unlocked YTO PLL
 26 Synthesizer Section
Check First LO pretune frequency and amplitude steps
 Check FM loop sense steps
Check the fractional N oscillator steps
Check sampler drive output of A7 Sloda steps
Check sampler if steps
 Synthesizer Section
 Main Coil Coarse and Fine DACs Voltages
Voltages in FM Coil and Main Loop Drivers
Check main coil coarse and fine DACs steps
Check main coil tune DAC steps
 30 Synthesizer Section
 Confirming an Unlocked Condition
Unlocked Fractional N PLL
 Fractional N PLL
10. Postscaler Divide Numbers
32 Synthesizer Section
 1 1. Unlocked Fractional N Troubleshooting Areas
Vco
VCO
 0AT VOLTAGE-CONTROLLED Oscillator
 Synthesizer l-35
12. Divider and Integrator Troubleshooting
 14. Harmonic Mixing Number versus Center Frequency
Frequency Span Accuracy Problems
13. Sweep Signal Destination versus Span
Determining the First LO Span
 Synthesizer l-37
Confirming Span Problems
 38 Synthesizer Section
YTO Main Coil Span Problems LO Spans 20 MHz
YTO FM Coil Span Problems LO Spans 2.01 MHz to 20 MHz
15. Settings of Sweep Switches
 Synthesizer l-39
Fractional N Span Problems LO Spans 52 MHz
 40 Synthesizer Section
First LO Span Problems All Spans
Check span attenuator steps
Check current source steps
 16. Settings for Switches and Comparators
First LO Span Problems Multiband Sweeps
 HP 6562E Sweep and Scan Ramps Synthesizer Section
 Phase Noise Problems
Phase Noise in Locked versus Unlocked Spans
Reference versus Reference PLL Phase Noise
 Fractional N PLL Phase Noise
Fractional N versus Offset PLL or YTO PLL Phase Noise
 Sampler and Sampler if
 Sweep Generator Circuit
Set a microwave source to the following settings
 10. Simplified Synthesizer Section
 JP/O a l
 Al5 RF
 50 Synthesizer Section
A21 Ocxo
Page
Page
 RF Section
RF Section
 Al4 and Al5 Test Connectors RF Section
 Automatic Fault Isolation References
 PIN
Low Band Problems
 Low and High Band Problems
High Band Problems
 A7 LO Distribution Amplifier
‘0 0 0 0 0 0
 A8 Low Band Mixer
 A9 Input Attenuator
 Low
 RF Section
 Al4 Frequency Control Assembly
Loda Drive
RF -l
 A7 First LO Distribution Amplifier Drive
Control Latch for Band-Switch Driver
 YTF Driver Circuit
 HP 8582E Rear-Panel LO SWP Output
FE RUI
 Pbbzl Offset
Sweep + Tune Multiplier Values
 Al5 RF Assembly
Confirming a Faulty Third Converter
Confirming Third Converter Output
 Third Converter
 Control Latches
Flatness Compensation Control
 SIG ID Oscillator Option
 Q604 on
MHz Reference
 MHz Reference at A15J302 RF Section
 MHz TTL Reference at U304 Pin RF Section
 RF Section Mnemonic Table
Page
 Isplay/Power Supply Section
 @I w3
 Wl Power-Cable Connections
GND
PWR UP
 Pms Pins 41’ +28
 Al7 Test Connector TAM Tests versus Test Connectors
Blank Display Using the TAM
 Blank Display
 Probe Power Socket
Blanking Signal
 Display Distortion
 Focus Problems
 Intensity Problems
 Display/Power Supply -l
 A6 Power Supply Assembly Troubleshooting
Dead Power Supply
Check the Supply Voltages
 Buck Regulator
Kick-start/Bias
 Supply Restarting Every 1.5 Seconds Kick Start
Line Fuse Blowing
 Low Voltage Supplies
Buck Regulator Control Loop
High Voltage Supplies
 CRT Supply Dropping Out
 DC-DC Converter Control
Buck Regulator Control
 Power Up
Page
Page
 Component-Level Information Packets A-l
Component-Level Information Packets
 Component-Level Information Packets
Table A-l. HP 8562 Spectrum Analyzer Documented Assemblies
 Component-Level Information Packets A-3
Table A-l. HP 8582 Spectrum Analyzer Documented Assemblies
Page
 Index-l
Ocxo
 AFI
Index-2
 Fadc
Index-3
 Index-4
 Loda
Index-5
 Index-6
 Index-7
 Index-6