HP (Hewlett-Packard) 8560A User Manual

Service Manual

HP 8560A Spectrum Analyzer

SERIAL NUMBERS

Prefix

3207A

and Above

HEWLETT

Eiia

HP Part No. 08560-90081

Printed in USA

PACKARD

August 1992

@Copyright Hewlett-Packard Company 1990, 1992
All Rights Reserved. Reproduction, adaptation, or translation without prior written
permission is prohibited, except as allowed under the copyright laws.
1212 Valley House Drive, Rohnert Park, CA 94928-4999, USA

Certification

Hewlett-Packard Company certifies that this product met its published specifications at the
time of shipment from the factory. Hewlett-Packard further certifies that its calibration
measurements are traceable to the United States National Institute of Standards and
Technology, to the extent allowed by the Institute’s calibration facility, and to the calibration
facilities of other International Standards Organization members.

Warranty

This Hewlett-Packard instrument product is warranted against defects in material and
workmanship for a period of one year from date of shipment. During the warranty period,
Hewlett-Packard Company will, at its option, either repair or replace products which prove to
be defective.

For warranty service or repair, this product must be returned to a service facility designated

by HP. Buyer shall prepay shipping charges to HP and HP shall pay shipping charges to
return the product to Buyer. However, Buyer shall pay all shipping charges, duties, and taxes
for products returned to HP from another country.

HP warrants that its software and firmware designated by HP for use with an instrument
will execute its programming instructions when properly installed on that instrument. HP
does not warrant that the operation of the instrument, or software, or firmware will be
uninterrupted or error-free.

Limitation of Warranty

The foregoing warranty shall not apply to defects resulting from improper or inadequate
maintenance by Buyer, Buyer-supplied software or interfacing, unauthorized modification or
misuse, operation outside of the environmental specifications for the product, or improper
site preparation or maintenance.

NO OTHER WARRANTY IS EXPRESSED OR IMPLIED. HP SPECIFICALLY
DISCLAIMS THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
FOR A PARTICULAR PURPOSE.

Exclusive Remedies

THE REMEDIES PROVIDED HEREIN ARE BUYER’S SOLE AND EXCLUSIVE

REMEDIES. HP SHALL NOT BE LIABLE FOR ANY DIRECT, INDIRECT, SPECIAL,
INCIDENTAL, OR CONSEQUENTIAL DAMAGES, WHETHER BASED ON
CONTRACT, TORT, OR ANY OTHER LEGAL THEORY.

Assistance

Product maintenance agreements and other customer assistance agreements are available for
Hewlett-Packard products.

For any assistance, contact your nearest Hewlett-Packard Sales and Service

Ofice.

. . .

III

Safety Symbols

The following safety symbols are used throughout this manual. Familiarize yourself with each

of the symbols and its meaning before operating this instrument.

Caution

Warning

The caution sign denotes a hazard. It calls attention to a procedure which,
if not correctly performed or adhered to, could result in damage to or
destruction of the instrument. Do not proceed beyond a caution sign until the
indicated conditions are fully understood and met.

The

warning

if not correctly performed or adhered to, could result in injury or loss of life.
Do not proceed beyond a
understood and met.

sign denotes a hazard. It calls attention to a procedure which,

warning

General Safety Considerations

Warning

Before this instrument is switched on,

through the protective conductor of the ac power cable to a socket outlet
provided with protective earth contact.

Any interruption of the protective (grounding) conductor, inside or outside
the instrument, or disconnection of the protective earth terminal can result in
personal injury.

sign until the indicated conditions are fully

make sure it has been properly grounded

Warning

Caution

There are many points in the instrument which can, if contacted, cause personal.
injury. Be extremely careful.

Any adjustments or service procedures that require operation of the instrument
with protective covers removed should be performed only by trained service
personnel.

Before this instrument is switched on, make sure its primary power circuitry

has been adapted to the voltage of the ac power source.
Failure to set the ac power input to the correct voltage could cause damage to

the instrument when the ac power cable is plugged in.

iv

HP 8560A Spectrum Analyzer Documentation Outline

For ordering information, contact a Hewlett-Packard Sales and Service Office.

Manuals Shipped with Your Instrument

HP 8560A Installation and Verification Manual

n Tells you how to install the spectrum analyzer.

n Tells you what your analyzer’s specifications are.

0

HP

856OA/8561 B/8563A

w

Tells you how to make measurements with your spectrum analyzer.

w

Tells you how to program your spectrum analyzer.

perating

and Programming Manual

HP 8560A Quick Reference Guide

8

Is an abbreviated version of the HP

856OA/8561B/8563A

Operating and Programming

iWanua1

n Provides you with a listing of all remote programming commands.

Options

S

Option 915:

HP 8560A

ervice

Component Level Information

w

The service manual provides information to service your analyzer to the assembly-level (not

always immediately available for new products).

n The component-level information binder provides component-level information for

component-level repair of the analyzer or analyzer family (not always immediately available
for new products).

Manual and HP 8560A/6lB/63A Spectrum Analyzer

Option 910: Extra Manual Set

w

Doubles all documentation shipped with a standard instrument.

Option 916: HP 8560A Quick Reference Guide

1

Adds an extra HP 8560A Quick Reference Guide to the document package.

V

Contents

1. General Information

Manual Organization
Manual Text Conventions
Serial Numbers Covered by This Manual
Instrument Variations
HP 85629B Test and Adjustment Module
Service Kit
Recommended Test Equipment
Electrostatic Discharge

Reducing Potential for ESD Damage
Static-Safe Accessories

Returning Instruments for Service

Service Tag
Original Packaging
Other Packaging

Sales and Service Offices

2. Adjustment Procedures

Introduction

Safety Considerations
Which Adjustments Should Be Performed?
Test Equipment
Adjustable and Factory-Selected Components
Adjustment Tools
Instrument Service Position

Using the TAM

Test Equipment
Adjustment Indicator

1. High-Voltage Power Supply Adjustment

2. Display Adjustment

3. IF

4. IF Amplitude Adjustments

5. DC Log Amplifier Adjustments

6. Sampling Oscillator Adjustment

7. YTO Adjustment

8. First LO Distribution Amplifier Adjustment

9. Tracking Generator Power Level Adjustments

10. Frequency Response Adjustment

11. Calibrator Amplitude Adjustment

12. 10 MHz Reference Adjustment (Non-Option 003 only)

13. Demodulator Adjustment

14. External Mixer Bias Adjustment

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Bandpass

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Adjustment

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l-l
l-2
l-2
l-3
l-6
l-6
1-6
l-7
l-7
1-8
1-8
l-8
l-8
1-8

1-11

2-l
2-2
2-2
2-2
2-2
2-3
2-3
2-9
2-9

2-9
2-12
2-14
2-20
2-25
2-29
2-33
2-37
2-40
2-42
2-45
2-48
2-50
2-52
2-55

Contents-l

15. External Mixer Amplitude Adjustment

16. Second IF Gain Adjustment

17. Signal ID Oscillator Adjustment

18. 600 MHz Amplitude Adjustment

19. 10 MHz Reference Adjustment (Option 003)

20. Tracking Oscillator Adjustment (Option 002)

3. Assembly Replacement

Access to Internal Assemblies
Cable Color Code

Procedure 1. Analyzer Cover
Procedure 2. Al Front Frame/Al8 CRT
Procedure 3.
Procedure 4.
Procedure 5. A2, A3, A4, and A5 Assemblies
Procedure 6. A6 Power Supply Assembly

Procedure 7.
Procedure 8. A7 through Al3 Assemblies
A7 1st LO Distribution Amplifier
A8 Low Band Mixer
A9 Input Attenuator
A10 Tracking Generator (Option 002)

AllYTO

Al3 Second Converter
Procedure 9. Al4 and Al5 Assemblies
Procedure 10. Al7 CRT Driver
Procedure 11. Bl Fan
Procedure 12.
Procedure 13. Rear Frame/Rear Dress Panel
Procedure 14. W3 Line Switch Cable
Procedure 15. EEROM (A2U501)

Procedure 16. A21 OCXO (Option 003)

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AlAl

Keyboard/Front Panel Keys

AlA

RPG

A6Al

High Voltage Assembly

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BTl

Battery

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2-57
2-60
2-63
2-66
2-68

2-71

3-2
3-2
3-3
3-4

3-11
3-12
3-13
3-19

3-22
3-25
3-28

3-29

3-30

3-31

3-32
3-33
3-34
3-37
3-38

3-39

3-40
3-44
3-50

3-51

4. Replaceable Parts

Ordering Information

Direct Mail-Order System

Direct Phone-Order System
Parts List Format
Firmware-Dependent Part Numbers

5. Major Assembly and Cable Locations

Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-l

Contents-2

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4-l
4-l

4-2
4-2
4-2

6. General Troubleshooting

Introduction .............................

Assembly Level Text
Block Diagrams

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Assembly Test Points

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Pad.. .............................

Test Jack

Ribbon Cables

WR PROT/WR ENA
Troubleshooting to a Functional Section
Using the TAM

Diagnostic Functions

TAM Requirements

Test Connectors

Revision Connectors

Inconsistent Results

Erroneous Results

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Softkey

Menus

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Blank Display ...........................

Automatic Fault Isolation

Display/Power Supply
Controller Check

ADC/Interface

IF/LOG Check

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Check

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LO Control Check

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RF Check ............................

Manual Probe Troubleshooting
Cal Osc. Troubleshooting Mode

Error Messages

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Viewing Multiple Messages
Error Message Elimination
System Analyzer Programming Errors (100 to 150)

ADC Errors (200 to 299)

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LO and RF Hardware/Firmware Failures (300 to 399)

YTO Loop Errors (300 to 301)
Roller PLL Errors (302 to 316)
YTO Loop Errors (317 to 318)
Roller Oscillator Errors (321 to 329)
YTO Loop Errors (331)
600 MHz Reference Loop (333)
YTO Leveling Loop (334)

Sampling Oscillator (335)
Automatic IF Errors (400 to 599)
System Errors (600 to 651)
Digital and Checksum Errors (700 to 799)

EEROM Checksum Errors (700 to 704)

Program ROM Check-sum Errors (705 to 710)

RAM Check Errors (711 to 719)

Microprocessor Error (717)
Battery Problem (718)

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Model Number Error (719)
System Errors (750 to 757)

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6-1
6-l
6-l
6-2
6-2
6-2
6-2
6-6

6-8
6-10
6-10
6-11
6-11
6-11
6-12
6-12
6-12
6-12
6-12
6-12
6-13
6-13
6-13
6-13
6-13
6-14
6-15
6-15
6-16
6-16
6-17
6-18
6-18
6-18
6-20
6-20
6-21
6-21
6-22
6-22
6-22
6-31
6-31
6-31
6-32
6-33
6-33
6-33
6-34
6-34

Contents-3

Option Module Errors (800 to 899)
User-Generated Errors (902 to 904)

Block Diagram Description

RF Section .............................

A7 LODA ............................

A8 Low Band Mixer ........................

A9 Input Attenuator
All YTO
Al3 Second Converter

A15Al

Third Converter (P/O A15)
Flatness Compensation Amplifiers (P/O A15)

Synthesizer Section

Sweeping the First LO
Reference PLL (P/O A15)
YTO PLL (A7, All, P/O A14, P/O A15)
Offset Lock Loop (P/O A15)
Roller Oscillator PLL (P/O A14)

IF Section .............................

A4 LOG Amplifier/Cal Oscillator assembly
A5 IF Assembly

ADC/Interface

ADC ..............................

Log Expand/Video Functions (P/O A3)

Triggering ............................

Controller Section

EEROM
Firmware
Display ASM

Display/Power Supply Section

A6 Power Supply
Al7 CRT Display Driver

............................

Second IF Distribution Amplifier (P/O A15)

Section

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6-34
6-34
6-35
6-36
6-36
6-36
6-36
6-36
6-37
6-37
6-37
6-37
6-37
6-37
6-38
6-38
6-38
6-39
6-39
6-40
6-40
6-41
6-42
6-42
6-42
6-42
6-43
6-43
6-43
6-43
6-43
6-43

7. ADC/Interface Section

Troubleshooting Using the TAM

Automatic Fault Isolation

Keyboard/RPG Problems

Keyboard Interface

RPG Interface
Triggering Problems
Flatness Control (RF Gain DACs)
A3 Assembly’s Video Circuits

Log Offset/Log Expand

Video MUX

Video Filter

Video Filter Buffer Amplifier

Positive/Negative Peak Detectors

Peak Detector Reset

Rosenfell Detector

ADCMUX

Variable Gain Amplifier (VGA)

Contents-4

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7-4

7-4
7-7
7-7
7-8

7-9
7-11
7-12

7-

14
7-15
7-15
7-16
7-17
7-18
7-18
7-19

7-21

Track and Hold

A3 Assembly’s ADC Circuits

ADC Control Signals
ADC Start/Stop Control
ADC ASM

ADC ...............................

Ramp Counter

A3 Assembly’s Control Circuits

Analog Bus Drivers
Analog Bus Timing
Interface Strobe Select

8. IF Section

Troubleshooting Using the TAM

Troubleshooting A4 Log Amplifier with the TAM
Troubleshooting A5 with the TAM
Troubleshooting A4 Cal Oscillator with the TAM

Automatic IF Adjustment

Parameters Adjusted
Requirements

Performance Test Failures

IF Gain Uncertainty Performance Test
Scale Fidelity Performance Test
Resolution Bandwidths Performance Tests

A4 Assembly’s Log Amplifier Circuits

Log Amplifier
Linear Amplifiers
Video Offset
Video Output
Frequency Counter
AM/FM Demodulator

4.8 kHz IF Filters

4.8 kHz and 10.7 MHz IF Filters

10.6952 MHz VCXO
Input Switch
LO Switch
Synchronous Detector

Limiter
Isolation Amplifier
Detector/Mixer

Log Offset/Gain Compensation

Log Offset Compensation
Log Gain Compensation

Video Mux

A5 IF Section

IF Signature
Common IF Signature Problems

1 MHz Resolution Bandwidth Problems
30 kHz Resolution Bandwidth Problems
3 kHz and 10 kHz Resolution Bandwidth Problems
Step Gains

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Prescaler/Conditioner

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7-21

7-22
7-22
7-23
7-24
7-24
7-25
7-26
7-26
7-27
7-28

8-3
8-4
8-4
8-8

8-9

8-10
8-11
8-12
8-12
8-13
8-13
8-14
8-14
8-15
8-16
8-16
8-17
8-17
8-17
8-18

8-19
8-19
8-19

8-20
8-20
8-20
8-20
8-21
8-21
8-21
8-21
8-22
8-23
8-28
8-30
8-32
8-32

8-33

Contents-5

A4 Assembly’s Cal Oscillator Circuit

Cal Oscillator Unlock at Beginning of IF Adjust

Inadequate CAL OSC AMPTD Range

300 Hz to 3 kHz Resolution Bandwidth Out of Specification
Low-Pass Filter
Sweep Generator

AM/FM Demodulation, Audio Amplifier, and Speaker

9. Controller Section

Troubleshooting Using the TAM

Blank Display ...........................

Digital Signature Analysis (DSA)
Display Problems

Line Generators

Blanking

Display Jumbled or Trace Off Screen

Intensity ..............................

Bad Characters or Graticule

Long Lines Dimmer Than Short Lines
Analog Zero-Span Problems
Frequency-Count Marker Problems
Frequency Counter
State- and Trace-Storage Problems
Keyboard Problems

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:

8-34
8-35
8-35
8-36
8-40
8-40
8-40

9-l
9-2
9-4
9-4
9-4
9-5

9-7
9-10
9-10
9-11
9-12
9-13
9-14
9-15
9-16

10. Synthesizer Section

Confirming a Faulty Synthesizer Section
Troubleshooting Test Setup
Troubleshooting Using the TAM
General PLL Troubleshooting

PLL Locked at Wrong Frequency

Unlocked PLL

Frequency Span Accuracy Problems

Determining the First LO Span

Confirming Span Problems
YTO Main Coil Span Problems (LO Spans
YTO FM Coil Span Problems (LO Spans 1.01 MHz to 20 MHz)
Roller Oscillator Span Problems (LO Spans 51 MHz)

First LO Span Problems (All Spans)

Unlocked YTO PLL

Operation
Troubleshooting an Unlocked YTO PLL

Unlocked Roller Oscillator PLL

Operation

Confirming an Unlocked Condition

Offset Oscillator PLL
Transfer Oscillator PLL
Main Oscillator PLL

Unlocked Offset Lock Loop (Sampling Oscillator)

Operation
Troubleshooting

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>20

MHz)

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10-2
10-7

10-8

10-13
10-13
10-13
10-15
10-15

lo-16
lo-16

10-17

lo-18

10-21

lo-23
lo-23
lo-25
lo-32
lo-32
lo-32

10-33
10-35
10-37
10-39
10-39
10-39

Contents-6

Unlocked Reference PLL

Operation
Troubleshooting
Third LO Driver Amplifier

Sampler and Sampler IF
Sweep Generator Circuit

A21 OCXO (Option 003 only)

11. RF Section

Troubleshooting Using the TAM
Low Band Problems (50 Hz to 2.9 GHz)
Low Band Problems
A7 LODA (LO Distribution Amplifier)

A9 Input Attenuator

Al3 Second Converter

Al4 Frequency Control Assembly ....................

A7 LODA Drive

Al5 RF Assembly

Confirming a Faulty Third Converter
Confirming Third Converter Output
Third Converter
Flatness Compensation Control
Control Latches
SIG ID Oscillator
10 MHz Reference

A10 Tracking Generator (Option 002)

Block Diagram Description

Tracking Oscillator ........................

Upconverter ...........................

Pentupler ............................

Modulator ............................

Coupler .............................

Output Mixer

Output Amplifier .........................

Bias Board ............................

Output Goes Unleveled (ERR 900 or ERR 901)
Excessive Residual FM
Flatness Out-of-Tolerance
Vernier Accuracy Out-of-Tolerance
Harmonic/Spurious Outputs Too High
Power Sweep Not Functioning Properly
No Power Output

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lo-42
lo-42
lo-42

10-44
10-45
10-47

lo-52

11-2
11-4
11-5
11-6
11-7
11-8
11-9

11-9
11-10
11-10
11-11
11-11
11-13
11-13
11-13
11-14

11-18
11-18
11-18
11-18
11-18
11-18
11-18
11-18
11-19
11-19
11-19
11-20
11-21
11-21
1 l-22
11-23
11-23

Contents-7

12. Display/Power Supply Section

Troubleshooting Using the TAM

Blank Display

Blank Display

Display Distortion
Focus Problems
Intensity Problems
A6 Power Supply Assembly

Dead Power Supply
Line Fuse Blowing
Supply Restarting Every 1.5 Seconds (Kick Start)
Low Voltage Supplies
High Voltage Supplies
CRT Supply Dropping Out
Blanking Signal
Buck Regulator Control
DC-DC Converter Control
Power Up

A. Component-Level Information Packets

Index

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12-4
12-5
12-6
12-7
12-8

12-9
12-11
12-11
12-13
12-13
12-13
12-14
12-15
12-15
12-16
12-16
12-17

Contents-8

Figures

l-1. Serial Number Label Example
l-2. Example of a Static-Safe Workstation

1-3. HP 8560A Shipping Container and Cushioning Materials
2-1. High-Voltage Power Supply Adjustment Setup
2-2. Display Adjustment Setup
2-3. CRT Adjust Pattern
2-4. A2 Display Adjustment Locations
2-5. IF
2-6. IF Amplitude Adjustment Setup
2-7. IF Amplitude Adjustment Locations
2-8. Sampler Adjustment Setup
2-9. Coarse-Tune Adjustment Setup

2-10. YTO Adjustment Setup
2-11. First LO Distribution Amplifier Adjustment Setup
2-12. Tracking Generator Power Level Adjustments Setup and Adjustment

2-13. Frequency Response Adjustment Setup
2-14. Calibrator Amplitude Adjustment Setup
2-15. 10 MHz Frequency Reference Adjustment Setup
2-16. Demodulator Adjustment Setup
2-17. External Mixer Bias Adjustment Setup
2-18. External Mixer Amplitude Adjustment Setup
2-19. Location of
2-20. Signal ID Oscillator Adjustment Setup
2-21. 600 MHz Amplitude Adjustment Setup
2-22. 10 MHz Reference Adjustment (Option
2-23. Tracking Oscillator Adjustment Setup

3- 1.

3-2. Discharging the Post-Accelerator Cable
3-3. A9, A18, and Line-Switch Assembly Mounting Screws
3-4. Front-Frame Mounting Screws
3-5. Installing the CRT and Front-Frame Assemblies
3-6. Placing the CRT into the Front Frame
3-7. A2, A3, A4, and A5 Assembly Removal
3-8. Assembly Cables (1 of 2)
3-8. Assembly Cables (2 of 2)
3-9. Coaxial Cable Clip

3-10. HP-IB and
3-11. A6 Power Supply Connections
3-12. Power Supply Cover
3-13. Al7 CRT Driver Mounting Screws
3-14. Assembly Locations

Bandpass

Locations

Hinged Assemblies

Adjustment Setup

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A15Al

AlAl Wl

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Cable Placement

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003)/Setup

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................

................

....................

..................

and Adjustment Location

..........

............

l-2
1-7

l-10
2-12
2-14
2-17
2-18
2-20
2-25
2-26
2-33
2-35
2-37
2-40

2-43

2-45
2-48
2-50

2-52

2-55
2-57

2-61
2-63

2-66

2-69

2-72

3-3
3-5
3-6
3-7
3-8

3-9
3-14
3-15
3-16
3-17
3-18
3-20
3-21
3-23
3-26

Contents-9

3-15. RF Section Bias Connections . . . . . . . . . . . . . . . . . . . . .

3-16. A9 Mounting Screws at Right Frame
3-17. A10 Tracking Generator Mounting Screws
3-18. All Mounting Screws

........................

3-19. Al4 and Al5 Assembly Removal
3-20. Al4 and Al5 Assembly Cables
3-21. Al7 Mounting Screws
3-22. Main Deck Screws
3-23. A6 Power-Supply Cover

........................

.........................

.......................

....................

3-24. W3 Dress and Connection to A6 Power Supply
3-25. Line Switch Mounting Screw and Cable Dress
3-26. W3 Cable Connector
3-27. Side Frame Mounting Screws
3-28. A21 OCXO Mounting Screws

........................

.....................

.....................

4-l. Parts Identification, Assembly Mounting
4-2. Parts Identification, Cover Assembly
4-3. Parts Identification, Main Chassis
4-4. Parts Identification, RF Section

....................

4-5. Parts Identification, Front Frame
4-6. Parts Identification, Rear Frame

5-

1. Hinged Assemblies

5-2. Top View (A2 Unfolded)

.........................

.......................

5-3. Top View (A2 and A3 Unfolded)
5-4. Top View (A2, A3, A4, and A5 Unfolded)
5-5. Bottom View (Al5 Unfolded)

.....................

5-6. Bottom View (Al5 and Al4 Unfolded)
5-7. Front End
5-8. Rear View
6-l. Assembly Test Points

.............................

.............................

........................

6-2. Ribbon Cable Connections (1 of 2)
6-3. WR ENA Softkey Menu
6-4. Functional Sections
6-5. Phase Lock Loops

..........................

6-6. Simplified Block Diagram

.......................

.........................

......................

6-7. HP 8560A Overall Block Diagram (Sheet 1 of 3)
6-7. HP 8560A Overall Block Diagram (Sheet 2 of 3)
6-7. HP 8560A Overall Block Diagram (Sheet 3 of 3)
7-l. A3 Test Connectors

.........................

7-2. A3 Interface Assembly Block Diagram
8-1. A4 and A5 Test Connectors

.....................

8-2. IF Section Troubleshooting with TAM
8-3. IF Adjust Signature

.........................

8-4. Detailed IF Adjust Signature (1)
8-5. Detailed IF Adjust Signature (2)
8-6. Detailed IF Adjust Signature (3)
8-7. Detailed IF Adjust Signature (4)
8-8. Detailed IF Adjust Signature (5)
8-9. Noisy Signature

8-10. Noise with Correct Shape
8-11. Region B Amplitude Variation
8-12. Region B Amplitude Offset

...........................

......................

....................

......................

.................

...............

...................

.............

.............

................

.................

...................

...................

...................

...................

...............

................

..................

............

............

............

.................

.................

...................

...................

...................

...................

...................

3-27
3-30
3-31
3-32
3-34
3-36

3-37
3-41
3-43

3-45

3-46

3-47
3-49
3-51
4-21
4-33
4-35
4-37
4-39
4-41

5-4
5-4
5-5

5-6
5-7
5-8

5-9

5-10

6-3
6-4

6-7
6-35
6-39
6-45
6-47
6-49
6-51

7-4

7-29

8-3

8-7
8-25
8-25
8-26
8-26
8-27

8-27
8-28
8-29
8-29
8-30

Contents-10

8-13. Faulty Crystal Short
8-14. Faulty LC Pole

...........................

8-15. Faulty Crystal Symmetry

........................

......................

8-16. Output Waveform, 10 kHz Resolution Bandwidth
8-17. Output Waveform, 3 kHz Resolution Bandwidth
8-18. Output Waveform, 1 kHz Resolution Bandwidth
8-19. Output Waveform, 300 Hz Resolution Bandwidth
8-20. Failed Crystal Set Symptoms
8-21. A4 Log Amplifier Block Diagram

8-22. A5 IF Assembly Block Diagram
8-23. Cal Oscillator Block Diagram

9-l. A2 Test Connectors

.........................

9-2. Line Generator Output Waveforms
9-3. Blanking Waveforms

........................

9-4. Expanded Blanking Waveforms
9-5. Switch Driver Waveform LCHAR
9-6. Distorted X/Y Line Generator Waveforms
9-7. Expanded X/Y Line Generator Waveforms
9-8. Normal X/Y Line Generator Waveforms
9-9. Delta X Waveform

9-10.

Delta Y Waveform

9-

11.

DEFl

Synchronization

.........................

.........................

........................

9-12. A2 Controller Block Diagram
10-l. YTO Loop Test Setup

........................

10-2. Sampler and Sampling Oscillator Test Setup
10-3. Al4 and Al5 Test Connectors
10-4. PLL Locked at Wrong Frequency
10-5. Unlocked PLL

...........................

10-6. Input to YTO FM Coil Driver
10-7. Input to

Main/FM/VCO

10-8. Troubleshooting an Unlocked YTO PLL

10-9.

Simplified Sweep Generator
10-10. Simplified Sweep Generator during Retrace
10-11. Simplified Synthesizer Section
10-12. Simplified Al4 Assembly Block Diagram
10-13. Simplified Al5 Assembly Block Diagram
10-14. Frequency Control Block Diagram
10-15. RF Assembly Block Diagram

11-l. Al4 and Al5 Test Connectors
11-2. A7 LODA Drive

..........................

11-3. 10 MHz Reference at A15J302
11-4. 10 MHz TTL-Reference at

.....................

...................

....................

.....................

..................

....................

...................

...............

...............

................

.....................

..............

....................

...................

....................

Sweep Switch

................

................

.....................

...............

....................

................

................

...................

.....................

....................

....................

U303

Pin 5

.................

11-5. HP 8560A RF Section Troubleshooting Block Diagram
12-l. Simplified Section Block Diagram
12-2. Al7 Test Connector
12-3. Probe Power Socket
12-4. Buck Regulator Waveform

.........................

.........................

......................

12-5. A6 Power Supply Block Diagram
12-6. Al7 CRT Driver Block Diagram

A-l. Interconnect Diagram

........................

...................

...................

...................

............

............

............

............

.........

8-31
8-31
8-33
8-37
8-38
8-38
8-39
8-39
8-43
8-45
8-47

9-3
9-5
9-6

9-7
9-8
9-9

9-9
9-10
9-11
9-12
9-13
9-17

10-5

10-6

10-8

10-13
10-14

lo-18

10-19

lo-26

10-47

lo-48

10-49
10-50
10-51
10-53
10-54

11-2
11-10
11-15

11-16
11-25

12-2

12-5

12-7

12-12
12-19
12-21

A-7

Contents-l 1

Tables

l-l. Service Kit Contents
l-2. Static-Safe Accessories
l-3. Hewlett-Packard Sales and Service Offices

1-4. Recommended Test Equipment
2-l. Related Adjustments (1 of 2)
2-l. Related Adjustments (2 of 2)
2-2. Adjustable Components (1 of 3)
2-2. Adjustable Components (2 of 3)
2-2. Adjustable Components (3 of 3)
2-3. Factory Selected Components
2-4. TAM Adjustments
2-5. Required Test Equipment for TAM
2-6. Factory-Selected LC Filter Capacitors
2-7. LC Factory-Selected Capacitor Selection
2-8. Factory-Selected XTAL Filter Capacitors
2-9. XTAL Factory-Selected Capacitor Selection

2-10. Capacitor Part Numbers
2-11. Sampling Adjustments
2-12. Conversion Loss Data
2-13. A15U802 Values
2-14. Tracking Oscillator Range Centering

3-l. Required Tools ...........................

4-2. Reference Designations, Abbreviations and Multipliers (1 of 4)
4-2. Reference Designations, Abbreviations, and Multipliers (2 of 4)
4-2. Reference Designations, Abbreviations, and Multipliers (3 of 4)
4-2. Reference Designations, Abbreviations, and Multipliers (4 of 4)
4-3. Manufacturers Code List (1 of 3)
4-4. Replaceable Parts
6-l. Location of Assembly Troubleshooting Text
7-l. W2 Control Cable Connections (1 of 2)
7-2. Automatic Fault Isolation References
7-3. TAM Tests Versus A3 Test Connectors
7-4. Keyboard Matrix
7-5. Counter Frequencies
7-6. Trigger MUX Truth Table
7-7. A3U102 Latch Outputs
7-8.

HMUX-SELO/l

7-9. Logic Levels at A3U108
7-10. Demultiplexer A3U410 Truth Table
7-11. Demultiplexer A3U500 Truth Table

8-l. Automatic Fault Isolation References

8-2. TAM Tests Versus Test Connectors (1 of 2)

8-3. Sweep Width Settings

Versus Detector Mode

........................

........................

...............

....................

.....................

.....................

...................

...................

...’................

.....................

.........................

..................

.................

................

...............

..............

.......................

........................

........................

..........................

.................

......

......

......

......

...................

..........................

..............

.................

.................

................

..........................

.........................

......................

.......................

................

.......................

..................

..................

.................

..............

........................

l-6

l-8
1-12
1-13

2-4
2-5
2-6
2-7
2-8

2-8
2-10
2-10
2-22
2-22
2-23
2-23
2-24
2-36
2-59
2-62
2-73

3-2

4-3

4-4

4-5

4-6

4-7
4-10

6-9

7-2

7-5

7-6

7-7

7-9

7-9
7-16

7-18
7-20
7-28

7-28

8-4

8-5

8-9

Contents-12

8-4. Available Reference Level Range
8-5. Signal Level for Reference Level Display
9-l. TAM Tests Versus Test Connectors

9-2. Gate Times
10-l. Center Frequency Tuning Values
10-2. Sampling Oscillator Test Frequencies
10-3. YTO Frequency in TEST Position
10-4. Automatic Fault Isolation References (1 of 2)
10-4. Automatic Fault Isolation References (2 of 2)
10-5. TAM Tests versus Test Connectors (1 of 2)
10-5. TAM Tests versus Test Connectors (2 of 2)
10-6. Sweep Signal Destination versus Span
10-7. Harmonic Mixing Number versus Center Frequency
10-8. Settings of Sweep Switches

10-9.

Settings of Sweep Switches
10-10. Settings for Switches and Comparators

lo-

11. Amplifier Polarities
10-12. YTO Frequency Errors with A14J23 on Pins 2 and 3
10-13. Voltages in FM Coil and Main Loop Drivers
10-14. Main Coil Coarse and Fine DACs Voltages
10-15. Sampling Oscillator PLL Divide Ratios

11-1. Automatic Fault Isolation References
11-2. TAM Tests versus Test Connectors
11-3. Attenuator Pin Values
11-4. RF Section Mnemonic Table
12-1. Wl Power-Cable Connections (1 of 2)
12-1. Wl Power-Cable Connections (2 of 2)
12-2. Automatic Fault Isolation References
12-3. TAM Tests versus Test Connectors

A-l. HP 8560A Spectrum Analyzer Documented Assemblies
A-2. A4 and Al6 Assemblies Shipped with HP 8560As Serial Prefixed below 3207A
A-3. Al5 RF Assemblies Shipped with HP 8560As Serial Prefixed below 3029A .

............................

......................

......................

.........................

........................

...................

................

..................

...................

.................

..................

..............

..............

...............

...............

.................

...........

................

..........

..............

...............

................

.................

..................

.....................

.................

.................

.................

....,.............

.........

8-12
8-12

9-2

9-

14
10-3
10-7

10-8

10-9

10-10
10-11
10-12
10-15
10-15
10-17
10-19
10-22

lo-25
lo-28

10-30
10-31
10-40

11-3
11-4
11-7

11-17

12-3
12-4
12-4
12-5

A-2
A-4
A-5

Contents-13

General Information

This HP 8560A Spectrum Analyzer Service Manual contains information required to adjust
and service the HP 8560A Spectrum Analyzer to the assembly level.

For component-level information, refer to the HP

Component Level Information.

856OA/61B/63A

Spectrum Analyzer

Manual Organization

Chapter 1, General Information, contains information about service kit contents,

recommended test equipment, returning an instrument for service, and sales and service
offices.

Chapter 2, Adjustment Procedures, contains the necessary adjustment procedures to adjust

the instrument properly after repair.
Chapter 3, Assembly Replacement, contains instructions for removal and replacement of all

major assemblies.
Chapter 4, Replaceable Parts, contains the information necessary to order parts or assemblies

for the instrument.
Chapter 5, Major Assembly and Cable Locations, contains figures identifying all major

assemblies and cables.
Chapter 6, General Troubleshooting, contains instrument-level troubleshooting information,

block diagrams, and troubleshooting information covering the instrument’s six functional
areas.

Chapters 7 through 12 contain troubleshooting information covering the instrument’s six

functional areas.
Appendix contains the component-level documented assemblies matrix and the HP 8560A

Interconnect Diagram.

General Information

1-l

Manual Text Conventions

The following text conventions are used throughout this manual:

m

Softkeys

Display

Text

Serial

This service manual applies directly to HP 8560A spectrum analyzers with serial numbers
prefixed 3207A and above. For HP 8560A spectrum analyzers with serial numbers prefixed
below

Hewlett-Packard makes frequent improvements to its products to enhance their performance,
usability, or reliability. HP service personnel have access to complete records of design changes
to each type of equipment, based on the equipment’s serial number. Whenever you contact
HP about your analyzer, have the complete serial number available to ensure obtaining the
most complete and accurate information possible.

3207A, order HP Part Number 08560-90038.

Boxed text in this typeface represents a mechanical key physically located on the
instrument.

Shaded text indicates a

activated by pressing corresponding keys surrounding the display. The labels
displayed are determined by the mechanical front-panel key depressed and the

instrument’s firmware.
Text printed in this typeface indicates text appearing on the screen.

N.umbers

Covered by This Manual

softkey. Softkey labels appear on the display and can be

The serial number label is attached to the rear of the analyzer. The serial number has two

parts: the prefix (the first four numbers and a letter), and the suffix (the last five numbers).

See Figure l-l.

The first four numbers of the prefix are a code identifying the date of the last major design
change incorporated in your analyzer. The letter identifies the country in which the unit
was manufactured. The five-digit suffix is a sequential number and is different for each
unit. Whenever you list the serial number or refer to it in obtaining information about your
analyzer, be sure to use the complete number, including the full prefix and the suffix.

Figure l-l. Serial Number Label Example

l-2 General Information

Instrument Variations

The following text lists the unique assemblies contained in the HP 8560A Options 001, 002,

003, and all combinations.

HP 8560A Option 001 (Rear-Panel 2nd IF Output)

Al5 RF Assembly

w19

Rear-panel JlO

HP 8560A Option 002 (Tracking Generator)

A10 Tracking Generator
Al5 RF Assembly

Front dress-panel
w14
W16
W36
W42
w43

W46
w47
W48

unique part number
added
added

added
unique part number
unique part number
added
added

deleted
deleted
added
added
added
added

Rear-panel J 11
Front-panel
Front-panel J6

HP 8560A Option 012 (001 + 002)

Al5 RF Assembly unique part number

w19

Rear-panel JlO
A10 Tracking Generator
Front dress-panel
w14 added

W16

W36
W42 deleted
w43

53

added
deleted
added

added
added

added
unique part number

added
deleted

added

General Information 1-3

W46

added

w47
W48
Rear-panel J 11
Front-panel
Front-panel J6

HP 8560A Option 003 (Precision Frequency Reference)

Al5 RF Assembly

A21 OCXO
w49

w50

HP 8560A Option 013 (001 + 003)

Al5 RF Assembly

w19

Rear-panel JlO

53

added
added
added
deleted

added

unique part number
added
added
added

unique part number
added

added
A21 OCXO
w49

w50

HP 8560A Option 023 (002 + 003)

Al5 RF Assembly

A10 Tracking Generator

Front dress-panel
w14
W16
W36
W42

w43
W46
w47

W48

added
added
added

unique part number
added

unique part number

added
added
deleted
deleted
added
added

added
added

Rear-panel

Front-panel

1-4 General Information

Jll

53

added
deleted

Front-panel J6

added

A21 OCXO
w49 added

w50

HP 8560A Option 123 (001 + 002 + 003)

Al5 RF Assembly

w19

Rear-panel JlO
A10 Tracking Generator
Front dress-panel
w14
W16
W36

W42
w43
W46

added

added

unique part number
added
added
added

unique part number
added
added
deleted
deleted
added
added

w47
W48
Rear-panel
Front-panel J3

Front-panel J6
A21 OCXO
w49

w50

Jll

added
added

added
deleted
added
added
added
added

General Information l-5

HP 85629B Test and Adjustment Module

When attached to the spectrum analyzer’s rear panel, the HP 85629B Test and Adjustment

p

Module (TAM)

rovides diagnostic functions for the HP 8560A. Because the TAM connects
directly to the analyzer’s internal data and address bus, it controls the analyzer’s hardware
directly. It would be impossible to control the hardware to the same extent either from the
analyzer’s front panel or over the HP-IB.

The TAM measures voltages at key points in the circuitry and flags a failure whenever the
voltage falls outside the limits. The TAM locates the failure to a small functional area which
can be examined manually.

Service Kit

The HP 8560A Service Kit (HP part number 08562-60021)

contains service tools required to

repair the instrument. Refer to Table l-l for a list of items in the service kit.

Table l-l. Service Kit Contents

Description

Cable Puller
PC Board Prop
Line Filter Assembly
Line Switch Cable
Extender Cable
BNC to SMB (snap-on) Cable
Connector Extractor Tool Kit

Quantity

1
1
1
1

1
2
1

HP Part Number

5021-6773
5021-7459
5061-9032
5062-0728
5062-0737

85680-60093

8710-1791

Recommended Test Equipment

Equipment required for operation verification, performance tests, adjustments,
troubleshooting, and the Test and Adjustment Module is listed in Table l-4. Other equipment
may be substituted if it meets or exceeds the critical specifications listed in the table. Refer to
the HP 856OA Installation and Verification Manual for the performance tests.

1-6 General Information

Electrostatic Discharge

Electrostatic discharge (ESD)

can damage or destroy electronic components. Therefore,
all work performed on assemblies consisting of electronic components should be done at a
static-free workstation. Figure l-2 is an example of a static-safe work station using two kinds

of ESD protection:

w

Conductive table mat and wrist-strap combination.

n Conductive floor mat and heel-strap combination.

These methods may be used together or separately.

Bui

lding

Ground

1

MegOhm

Resistor

I /TV

hhirist

StroD\

*

5111125

Figure 1-2. Example of a Static-Safe Workstation

Reducing Potential for ESD Damage

The suggestions that follow may help reduce ESD damage that occurs during
testing and servicing.

w

Before connecting any coaxial cable to an analyzer connector for the first time each day,

momentarily ground the center and outer connectors of the cable.

n Personnel should be grounded with a resistor-isolated wrist strap before touching the center

in of any connector and before removing any assembly from the unit.

n Be sure all instruments are properly earth-grounded to prevent build-up of static discharge.

General Information

nstrument

l-7

Static-Safe Accessories

Table 1-2. Static-Safe Accessories

HP Part

Number

9300-0797

9300-0980

9300-1383

9300-l169

ESD heel-strap (reusable 6 to 12 months).

Set includes: 3M static control mat 0.6 m x 1.2 m (2 ft x 4 ft) and 4.6 cm (15 ft)
ground wire. (The wrist-strap and wrist-strap cord are not included. They must
be ordered separately.)

Wrist-strap cord 1.5 m (5 ft)
Wrist-strap, color black, stainless steel, without cord, has four adjustable links

and a 7 mm post-type connection.

Description

Returning Instruments for Service

Service Tag

If you are returning the instrument to Hewlett-Packard for servicing, fill in and attach a blue
service tag. Service tags are supplied in the back of this chapter.

Please be as specific as possible about the nature of the problem. If you have recorded any

error messages that appeared on the screen, or have completed a performance test record, or
have any other specific data on the performance of the analyzer, please send a copy of this
information with the unit.

Original Packaging

Before shipping, pack the unit in the original factory packaging materials if they are available.
If the original materials are unavailable, identical packaging materials may be acquired
through’any Hewlett-Packard Sales and Service Office. Descriptions of the packaging materials
are listed in Figure l-3.

Other Packaging
Caution

Repackage the analyzer in the original packaging materials or with commercially available
materials described in steps 4 and 5, below.

1. Attach a completed service tag to the instrument.

1-8 General Information

Analyzer damage can result from using packaging materials other than those
specified. Never use styrene pellets in any shape as packaging materials. They
do not adequately cushion the equipment or prevent it from shifting in the
carton. They cause equipment damage by generating static electricity and by
lodging in the analyzer fan.

2. Install the front-panel cover on the instrument.

3. Wrap the instrument in antistatic plastic to reduce the possibility of damage caused by
electrostatic discharge.

4. Use the original materials or a strong shipping container that is double-walled, corrugated
cardboard carton with 159 kg (350 lb)

ursting strength. The carton must be both large

b

enough and strong enough to accommodate the analyzer and allows at least 3 to 4 inches

on all sides of the analyzer for packing material.

5. Surround the equipment with at least 3 to 4 inches of packing material, or enough to
prevent the equipment from moving in the carton. If packing foam is unavailable, the best

TM

alternative is SD-240 Air Cap
Air Cap looks like a plastic sheet covered with

from Sealed Air Corporation (Commerce, CA 90001).

l-1/4

inch air-filled bubbles. Use the
pink-colored Air Cap to reduce static electricity. Wrap the equipment several times in this
material to both protect the equipment and prevent it from moving in the carton.

6. Seal the shipping container securely with strong nylon adhesive tape.

7. Mark the shipping container

“FRAGILE, HANDLE WITH CARE” to assure careful

handling.

8. Retain copies of all shipping papers.

General Information

l-9

SK1126

Item

1

2
3

Figure 1-3. HP 8560A Shipping Container and Cushioning Materials

l-1 0 General Information

Description

9211-5636
08590-80013

08590-80014

HP Part Number

Outer Carton
Pads (2)

Bottom Tray

Sales and Service Offices

Hewlett-Packard has sales and service offices around the world providing complete support for
Hewlett-Packard products. To obtain servicing information, or to order replacement parts,
contact the nearest Hewlett-Packard Sales and Service Office listed in Table l-3.

In any correspondence, be sure to include the pertinent information about model numbers,
serial numbers, and assembly part numbers.

Note

Within the USA, a toll-free phone number is available for ordering

replacement parts. Refer to the “Ordering Information” section in Chapter 4,

“Replaceable Parts,” for the phone number and more information.

General Information l-l 1

Table 1-3. Hewlett-Packard Sales and Service Offices

US FIELD OPERATIONS EUROPEAN OPERATIONS
HEADQUARTERS

HEADQUARTERS

Hewlett-Packard Company Hewlett-Packard S.A.
19320 Pruneridge Avenue

Cupertino, CA 95014, USA 1217 Meyrin

[phone]

150, Route du Nant-d’Avri1

2/Geneva

Switzerland
(41 22) 780.8111

California

Hewlett-Packard Co.

France

1421 South Manhattan Ave. Hewlett-Packard France
Fullerton, CA 92631
[phone]

1 Avenue Du Canada Blackburn, Victoria 3130
Zone

D’Activite

De Courtaboeuf (61 3) 895-2895

F-91947 Les Ulis Cedex
Hewlett-Packard Co.
301 E. Evelyn

France

(33 1) 69 82 60 60
Mountain View, CA 94041
[phone]

Colorado

Hewlett-Packard Co.
24 Inverness Place, East
Englewood, CO 80112

Germany

Hewlett-Packard

GmbH

Berner Strasse 117 Canada
6000 Frankfurt 56
West Germany
(49 69) 500006-O

[phone]

Great Britain

Georgia

Hewlett-Packard Co.
2000 South Park Place
Atlanta, GA 30339

[phone]

IlklOiS

Hewlett-Packard Ltd.
Eskdale Road, Winnersh Triangle Kanagawa 229, Japan
Wokingham, Berkshire

RGll

England
(44 734) 696622

Hewlett-Packard Co.
5201 Tollview Drive
Rolling Meadows, IL 60008
[phone]

New Jersey

Hewlett-Packard Co.

120 W. Century Road
Paramus, NJ 07653
[phone]

Texas

Hewlett-Packard Co.
930 E. Campbell Rd.
Richardson, TX 75081
[phone]

INTERCON OPERATIONS

HEADQUARTERS

Hewlett-Packard Company

3495 Deer Creek Rd.
Palo Alto, California 94304-1316
[phone]

Australia

Hewlett-Packard Australia Ltd.
31-41 Joseph Street

Canada

Hewlett-Packard (Canada) Ltd.

17500 South Service Road
Trans-Canada Highway
Kirkland, Quebec H9J 2X8

[phone]

Japan

Yokogawa-Hewlett-Packard Ltd.
1-27-15 Yabe, Sagamihara

5DZ (81 427) 59-1311

China

China Hewlett-Packard, Co.
38

Bei

San Huan Xl Road
Shuang Yu Shu

Hai Dian District

Beijing, China
(86 1) 256-6888

Singapore

Hewlett-Packard Singapore
Pte. Ltd.
1150 Depot Road
Singapore 0410
(65) 273 7388

Taiwan

Hewlett-Packard Taiwan
8th Floor, H-P Building
337 Fu Hsing North Road

Taipei, Taiwan
(886 2) 712-0404

1-12 General Information