HP 8642a, 8642b schematic

Errata

Title & Document Type: 8642A/B Synthesized Signal Generator
Operation and Calibration Manual

Manual Part Number: 08642-90224

Revision Date: 1996-03-01

HP References in this Manual

This manual may contain references to HP or Hewlett-Packard. Please note that Hewlett­Packard's former test and measurement, semiconductor products and chemical analysis
businesses are now part of Agilent Technologies. We have made no changes to this
manual copy. The HP XXXX referred to in this document is now the Agilent XXXX.
For example, model number HP8648A is now model number Agilent 8648A.

About this Manual

We’ve added this manual to the Agilent website in an effort to help you support your
product. This manual provides the best information we could find. It may be incomplete
or contain dated information, and the scan quality may not be ideal. If we find a better
copy in the future, we will add it to the Agilent website.

Support for Your Product

Agilent no longer sells or supports this product. You will find any other available
product information on the Agilent Test & Measurement website:

www.tm.agilent.com

Search for the model number of this product, and the resulting product page will guide
you to any available information. Our service centers may be able to perform calibration
if no repair parts are needed, but no other support from Agilent is available.

Errata

Title & Document Type: 8642A/B Synthesized Signal Generator Operation

and Calibration Manual

Manual Part Number: 08642-90224

Revision Date: 1996-03-01

HP References in this Manual

This manual may contain references to HP or Hewlett-Packard. Please note that Hewlett­Packard's former test and measurement, semiconductor products and chemical analysis
businesses are now part of Agilent Technologies. We have made no changes to this
manual copy. The HP XXXX referred to in this document is now the Agilent XXXX.
For example, model number HP8648A is now model number Agilent 8648A.

About this Manual

We’ve added this manual to the Agilent website in an effort to help you support your
product. This manual provides the best information we could find. It may be incomplete
or contain dated information, and the scan quality may not be ideal. If we find a better
copy in the future, we will add it to the Agilent website.

Support for Your Product

Agilent no longer sells or supports this product. You will find any other available
product information on the Agilent Test & Measurement website:

www.tm.agilent.com

Search for the model number of this product, and the resulting product page will guide
you to any available information. Our service centers may be able to perform calibration
if no repair parts are needed, but no other support from Agilent is available.

HP 8642A/B

SYNTHESIZED SIGNAL GENERATOR

(Including Options

001,

002, and 003)

Operation and Calibration Manual

SERIAL NUMBERS

This manual applies directly to instruments with

serial numbers prefixed:

2427A to 2930A and all major changes that apply to your instrument/modules.

For additional important information about serial
numbers, refer to "INSTRUMENTS COVERED BY
THIS MANUAL" in Section 1.

Third Edition

This material may be reproduced by or for the U.S.

Government pursuant to the Copyright License un­der the clause at DFARS 52.277-7013 (APR. 1988).

Copyright ©HEWLETT-PACKARD COMPANY 1989

EAST 24001 MISSION AVENUE, TAF C-34, SPOKANE, WASHINGTON,

U.S.A.

99220

Operation and Calibration Manual HP Part 08642-90224
Other Documents Available:

Microfiche Operation and Calibration Manual HP Part 08642-90225
Service Manual (Volume 1, 2, 3) HP Part 08642-90226

Microfiche Service Manual HP Part 08642-90227

Printed in

U.S.A.:

HEWLETT

m

PACKARD

March 1996

Model 8642A/B

Safety Considerations

SAFETY CONSIDERATIONS

GENERAL

This product and related documentation must be re­viewed for familiarization with safety markings and
instructions before operation.

This product is a Safety Class I instrument (provided
with a protective earth terminal).

BEFORE APPLYING POWER

Verify that the product is set to match the available

line voltage and the correct fuse is installed.

SAFETY EARTH GROUND

An uninterruptible safety earth ground must be pro­vided from the main power source to the product input
wiring terminals, power cord, or supplied power cord

set.

SAFETY SYMBOLS

Instruction manual symbol: the product will

A

be marked with this symbol when it
is necessary for the user to refer to the instruction
manual (refer to Table of Contents).

Lj Indicates hazardous voltages.

WARNING

Any interruption of the protective (ground-

ing) conductor (inside or outside the instru­ment) or disconnecting the protective earth
terminal will cause a potential shock hazard
that could result in personal injury. (Ground­ing one conductor of a two conductor outlet
is not sufficient protection).

Whenever it is likely that the protection has
been impaired, the instrument must be made
inoperative and be secured against any unin­tended operation.

If this instrument is to be energized via an

autotransformer (for voltage reduction) make
sure the common terminal is connected to the
earth terminal of the power source.

Servicing instructions are for use by service­trained personnel only. To avoid dangerous
electric shock, do not perform any servicing
unless qualified to do so.

"=r Indicates earth (ground) terminal.

WARNING

procedure, practice, or the like, which, if not correctly
performed or adhered to, could result in personal inju­ry. Do not proceed beyond a WARNING sign until the
indicated conditions are fully understood and met.

CAUTION

operating procedure, practice, or the like, which, if not
correctly performed or adhered to, could result in dam­age to or destruction of part or all of the product. Do
not proceed beyond a CAUTION sign until the indi­cated conditions are fully understood and met.

The WARNING sign denotes a
hazard. It calls attention to a

]

The CAUTION sign denotes a haz­ard. It calls attention to an

Adjustments described in the manual are per-

formed with power supplied to the instrument

while protective covers are removed. Energy
available at many points may, if contacted, re­sult in personal injury.

Capacitors inside the instrument may still be
charged even if the instrument has been dis­connected from its source of supply.

For continued protection against fire

replace the line fuse(s) only with 250V fuse(s)

of the same current rating and type (for exam-

ple, normal blow, time delay,

repaired fuses or short circuited
fuseholders.

etc.).

hazard,

Do not use

m

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
States National Bureau of Standards, to the extent allowed by the Bureau's calibration facility, and to the
calibration facilities of other International Standards Organization members.

calibration

measurements are

traceable

to the United

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
specifications for the product, or improper site preparation or maintenance.

misuse,

operation outside of the environmental

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 Office. Addresses are provided at

the back of this manual.

Model 8642A/B Contents

CONTENTS

SECTION 1

GENERAL INFORMATION

Introduction to the Operating and Service Manual 1-1

Volume I, Operating Manual 1-1

Volumes II through IV, Service Manual 1-1
Where to Find Instrument Specifications 1-1
Where to Find Safety Considerations 1-2
Hewlett-Packard Interface Bus (HP-IB) Enables 1-2

Remote Control of the Instrument 1-2

Selectingthe HP-IB Address 1-2

HP-IB Capabilities 1-2
An Explanation of On-Site Service Strategy 1-3

Hardware Features 1-3

Built-in Test Features 1-3

Firmware Features 1-3
How the Operating Fundamentals Can Help You Learn to Operate the Instrument 1-3
Accessories Supplied With the 8642A/B 1-4

Options Available With the Instrument 1—4

Electrical Options 1-4

Mechanical Options 1-4
Documentation Options 1-5

Equipment That Can Be Ordered For the Signal 1-5

Generator 1-5
On-Site Service Eats 1-5
Bench Service Kits 1-5
Signal Generator Test System, HP 8902SG 1-5
50Q to 75ft Adapter 1-5
Fiberglass Transit Case 1-5

Rack-Slide Kit 1-5
How to Use the Recommended Test Equipment Table 1-6
Instruments Covered By This Manual 1-6
Table 1-1, Specifications 1-7
Table 1-2, Supplemental Characteristics 1-13
Table 1-3, Recommended Test Equipment 1-15
Figure 1-1, 1 MHz Low Pass Filter 1-16
Table 1-4, Alternative Test Equipment 1-16
Table 1-5, HP 11801C On-Site Service Kit 1-17

rcv.l5NOV90 v

Contents

Model 8642A/B

SECTION

INSTALLATION

Introduction
Initial Inspection
Preparation

Power Requirements
Power Cables
HP-IB Address Selection
Interconnections
Mating Connectors
Operating Environment
Rack Mounting

Storage

Environment
Packaging

Figure 2-2, HP-IB Connections

Introduction to Section 3
Detailed Operating Instructions

Figure 3-1, Basic Functions

Figure
HP-IB Table
HP-TB Remote Operation
HP-IB Address

HP-IB Capabilities
Data Input
Data Output
Clear

3-24
Remote, Local
Local Lockout,
Service Request
Status Byte

Additional HP-IB Information
HP-IB Codes Summary
HP-IB Related Front-Panel Keys
HP-IB Related Terms
RF Frequency

RF Frequency Contents

RF Frequency

Relative RF Frequency

RF Frequency Sweep

Amplitude

Amplitude

Relative Amplitude

2-1

2-1

For

Use

2-1

2-1

2-3

2-5

2-5

2-5

2-5

2-5

and

Shipment

2-6

2-6

2-6

2-7

SECTION

OPERATION

3-1

3-2

4

3-2,

Rear-Panel Features

of

Contents

3-5

3-4

3-7

3-8

3-9

3-11

3-15

3-25

Set

Local

3-26

3-27

3-29

3-31

3-32

3-34

3-35

3-37

3-37

3-39

3-45

3-49

3-67

Amplitude Contents

3-67

3-69

3-77

Amplitude Sweep

3-83

2

3

3-3

vi rrr. 1:'K\()V'.)()

Model 8642A/B Contents

Modulation 3-95

Modulation Contents 3-95
Modulation, AM 3-97
Modulation, FM 3-105
Modulation, $M 3-119
Modulation, Pulse 3-127
Modulation, Oscillator 3-131

Setting Modifications 3-135

Setting Modifications Contents 3-135
Instrument Preset, Partial Preset 3-137
Knob 3-141
Step,

Increment Set 3-149

Entry Off 3-153

Recall Registers 3-155

Recall Registers Contents 3-155

Save/Recall 3-157
Sequence 3-161

Special Functions 3-165

Special Functions Contents 3-165
Special Functions 3-167

Messages 3-177

Messages Contents 3-177
Operating Messages 3-179

Apendixes 3-199

Apendix
Apendix
Apendix C: Amplitude Units Conversion
Apendix
Appendix E: Individual Instrument Identification

A:

Glossary 3-199

B:

Writing Messages to the Display 3-201

3-205

D:

Display Annunciators and Abbreviations

3-207

3-208.1

SECTION 4

PERFORMANCE TESTS

Introduction 4-1
Recommended Test Equipment 4-1
Abbreviated Performance Testing 4-1
Level Accuracy and Flatness Tests 4-3
Harmonics Tests 4-9
Pulse On/OffRatio Test 4-11
Residuals Tests 4-13

AM, FM, and SMTests 4-15
Extended FM Distortion Test 4-22
Internal Modulation Oscillator Tests 4-24
SWR 4-27
Spurious Test 4-31
Third Order Intermodulation 4-33
SSB Phase Noise Test 4-35
SSB Phase Noise Test (Optional) 4-38
Extended Pulse Tests 4-41

Optional Residual FM Test 4-43
Internal Time Base Aging Rate Test 4-45

Test Record 4-49

rcv.l»NOV90 vii

Contents

SECTION 5

ADJUSTMENTS

Model 8642A/B

Adjustments 5-2
Auto-Adjust Routines 5-2

Description 5-2
How All Auto-Adjust Procedures Begin 5-3

Correction Data Special Functions 5-5

Identifying the Contents of A20 5-5
Identifying the Contents of

A3

5-7

Interpreting Cal Data Stats 5-8

viii rn:l').\:OV90

Model 8642A/B

Section 1

GENERAL INFORMATION

1-1.

INTRODUCTION TO THE OPERATING AND SERVICE MANUAL

This manual contains information required for a qualified person to install, operate, test, adjust, and
service the Hewlett-Packard Model 8642A/B Signal Generator. The HP 8642A/B will generally be
referred to as the Signal Generator throughout the manual. The Operating and Service Manual is
comprised of four volumes as described below.

Volume 1, Operation and Calibration Manual

Product Note 8642A/B-1. This Product Note explores the HP 8642A/B features by discussing their

benefits for your application.

Section 1, General Information. General Information covers instrument specifications, options,
equipment available, recommended test equipment, and an explanation of the On-Site Service Strategy
for the HP 8642A/B.

General Information

Section 2, Installation. Installation covers initial inspection, preparation for use, and storage and
shipment.

Section 3, Operation. Operation provides HP-IB operating information (including HP-IB address
selection) and detailed operating information for either the beginning or experienced user. A glossary
and index are provided at the end of Section 3.

Section 4, Performance Tests. Performance Tests enable you to check the performance of the

instrument against the specifications listed in Table 1-1.

Section 5, Adjustments. The adjustment procedures that are normally found in this section are now
located in Section 8 with the appropriate troubleshooting procedures and schematics.

Volumes 2 through 5, Service Manual

Section 6, Replaceable Parts. Replaceable Parts lists all replaceable parts and assemblies.

Section 7, Instrument Changes. Instrument changes provide backdating information, and retrofitting

and modification information.

Section 8, Service. Service provides the information required to adjust and repair the instrument.

1-2. WHERE TO FIND INSTRUMENT SPECIFICATIONS

Instrument specifications are listed in Table 1-1. These specifications are the performance standards or
limits against which the instrument can be tested. Supplemental characteristics are listed in Table 1-2.
Supplemental characteristics are not guaranteed specifications but are typical characteristics included
as additional information.

rev.30SEP88

1-1

General Information

Model 8642A/B

1-3. WHERE TO FIND SAFETY CONSIDERATIONS

This product is a Safety Class I instrument; that is, one provided with a protective earth terminal.
Before operating or servicing the Signal Generator, service personnel should familiarize themselves with
the safety markings on the Signal Generator and the safety instructions. Safety information pertinent
to the task at hand (that is, information regarding installing, operating, performance testing, adjusting,
or servicing the HP 8642A/B) is found throughout this manual. Refer to the Safety Considerations
pages found at the beginning of Volume 1 for a summary of that information.

1-4. HEWLETT-PACKARD INTERFACE BUS (HP-IB) ENABLES REMOTE CONTROL OF

THE INSTRUMENT <Z2H>

The HP 8642A/B Signal Generator has a Hewlett-Packard Interface Bus (HP-IB) interface and can be
used with an HP-IB compatible controller for test system applications. The Signal Generator is fully
programmable via the Hewlett-Packard Interface Bus. HP-IB is Hewlett-Packard's implementation of

IEEE Standard 488 and the identical ANSI Standard MCl.l. (Refer to the HP-IB portion of Section 3

for more complete details.)

Selecting the HP-IB Address

The Signal Generator's HP-IB address is set to 19 at the factory in both internal memory and an
internal switch located inside the instrument. The decimal equivalent of the

be displayed on and changed from the front panel. Refer to HP-IB Address in the HP-IB portion of

Section 3 for information regarding changing the HP-IB address.

5-bit

address code can

HP-IB Capabilities

This Signal Generator's HP-IB capabilities are defined by the following list of interface functions. For
more information, refer to HP-IB Capabilities in Section 3.

Source Handshake
Acceptor Handshake
Talker
Extended Talker
Listener
Extended Listener
Service Request
Remote Local
Parallel Poll
Device Clear
Device Trigger
Controller

Driver Electronics

SHI
AH1
T6
TEO
L3
LEO
SRI
RL1
PPO
DC1
DTO
Cl
C2
C3
C28
E2

(Complete capability)
(Complete capability)
(No talk only mode)
(No capability)
(Complete capability including Listen Only)
(No capability)
(Complete capability)
(Complete capability)
(No capability)

(Complete capability)
(No capability)
(System controller)
(Send IFC and take charge)
(Send REN)
(Send interface messages)
(Three-state drivers)

1-2 rev.30SEP88

Model 8642A/B

1-6. AN EXPLANATION OF THE ON-SITE SERVICE STRATEGY

The objectives of the on-site service strategy are to provide the equipment and information necessary
to enable service-trained personnel to troubleshoot and repair the HP 8642A/B to the module level at

its operating site. Using the On-Site Service Kit (refer to paragraph 1-12 for a description), a service
person should be able to successfully repair 80more of Signal Generator failures within two hours after
arriving at the operating site. Repair times may be longer for individuals with no prior training or
experience on the HP 8642A/B.

The following service features have been designed into the HP 8642A/B:

Hardware Features

• Each major circuit function is physically located in a separate module.

• RF modules are arranged physically from left to right in the order of their functional sequence.

• Most intermodule connections are accessible from the top of the instrument.

• There are no RF feedback paths between modules (a feed-forward design).

• Printed on the inside top cover of the instrument is an illustrated top view of the inside of the
instrument as well as a table of cable connections.

Built-in Test Features

• A voltmeter and a power meter are built into the instrument.

• Unique service tools are stored inside the HP 8642A/B cabinet.

General Information

Firmware Features

• All RF modules are connected to a diagnostic bus which allows the controller to monitor critical
operating test points within the module.

• Critical message information concerning the operating condition of the HP 8642A/B is displayed
in numeric code on the front panel (or can be printed via an HP-IB printer without the need of
an external controller).

• Four instrument diagnostic levels help to analyze the instrument's condition: Power-Up
Check, Fault Detection Self-Check, Instrument Level Diagnostics, and Module Level Diagnostics.

1-7. HOW THE OPERATING FUNDAMENTALS CAN HELP YOU LEARN TO OPERATE

The Operating Fundamentals are abbreviated, front-panel operating instructions (included with Volume
1 as a separate booklet) which will enable you to operate the basic functions of the Signal Generator
without using the more detailed and extensive portions of the Operating Manual. However, the Detailed
Operating Instructions in Section 3 can provide more specific information, which can be easily accessed
with an Index.

Self-

rev.30SEP88 1-3

General Information

1-8. ACCESSORIES SUPPLIED WITH THE 8642A/B

The line power cable is the only accessory supplied with the Signal Generator. The line power cable is
selected at the factory according to the line power requirements specified by the customer. If the line
power cord type is not specified, it will be selected according to the voltage available in the country of
destination. For the part numbers of the power cables, refer to Table 2-1 on page 2-4, Power Cable and
Mains Plug Part Numbers. Signal Generators shipped to countries using 115 volts are also supplied
with a set of fuses for 230 volt operation.

1-9. OPTIONS AVAILABLE WITH THE INSTRUMENT

Electrical Options

Electrical option numbers can be displayed on the front panel or read via HP-IB. Refer to page 3-208.1
for more information.

Option 001 (High Stability Time Base). This optional time base improves the frequency accuracy and
stability of the internal reference oscillator. (Refer to Table 1-1 for specifications.)

Option 002 (Rear-Panel Output for All Connectors). This option places all front-panel connections

on the rear panel of the instrument.

Model 8642A/B

HP 8642A Option 003 (Increased Output Power Option). This option enables the HP 8642A

Synthesized Signal Generator to deliver the same output power as the HP 8642B (excluding band 10).

Mechanical Options

Option 907 (Front-Handle Kit). Front handles are provided when Option 907 is ordered. Order a
Front-Handle Kit as HP part number 5061-0089.

Option 908 (Rack-Flange Kit). Rack flanges are provided for the Signal Generator when Option 908
is ordered. (When rack mounting the Signal Generator, ensure the instrument is supported properly by
using the system cabinet's support rails. Due to the weight of the HP 8642A/B, not using the support
rails could cause damage to the instrument and/or the system cabinet.) Order a Rack-Flange Kit as
HP part number 5061-0077.

Option 909 (Rack-Flange and Front-Handle Combination Kit). This is not a Front-Handle Kit and
a Rack-Flange Kit packaged together; it is a unique part that combines both functions. Combination
kits are provided for the Signal Generator when Option 909 is ordered. (When rack mounting the
Signal Generator, ensure the instrument is supported properly by using the system cabinet's support
rails.

Due to the weight of the HP 8642A/B, not using the support rails could cause damage to the
instrument and/or the system cabinet.) Order a Rack-Flange and Front-Handle Combination Kit as
HP part number 5061-0083.

Rack-Slide Kit information is listed on the following page under paragraph 1-10, Equipment That
Can Be Ordered for the Signal Generator. If you are planning to take advantage of the On-Site
Service Strategy for the HP 8642A/B, we suggest you use the Rack-Slide Kit when rack mounting
the instrument.

1-4

rev.30SEP88

Model 8642A/B General Information

Documentation Options

Option 910 (Extra Manual). This option provides an additional Operating and Service Manual
(Volumes I through IV). Order the additional manual as HP part number 08642-90012.

Option 710 (On-Site Service Manual). The On-Site Service Manual is a service tool directed at speedy

troubleshooting and repair of the HP 8642A/B to the module level. The manual provides a systematic
approach to troubleshooting which directs the technician through instrument checks, module-group
checks, and then specific module checks. The On-Site Service Manual is designed for use with the

On-Site Service Kits. (Refer to paragraph 1-10 below.) Order the On-Site Service Manual as HP part
number 08642-90020. (It is not necessary to order option 710 if an On-Site Service Kit is ordered.)

1-10. EQUIPMENT THAT CAN BE ORDERED FOR THE SIGNAL GENERATOR

On-Site Service Kits

Each of these kits contains an On-Site Service Manual in addition to all HP 8642A/B modules and
interconnecting cables required for on-site, module-level repair. Each kit also includes a set of tools (not
normally found in a standard tool box) necessary to service the HP 8642A/B. Order the HP 11801A
to service the HP 8642A. Order the HP 11801B to service the HP 8642B. Order the HP 11801C to
service both instruments. Refer to Table 1-5, on page 1-17, for a complete parts listing of the On-Site
Service Kit. (Although two part numbers are listed for modules in the On-Site Service Kit, only the
new or the restored module will be included in the kit.)

Bench Service Kit

This kit, in conjunction with the HP 8642A/B Service Manual, is directed at component-level repair
and module calibration of the HP 8642A/B. The kit contains special tools and troubleshooting aids
such as a Torx torque wrench and Torx bits, test adapters, and special cables and cable adapters,
etc.

Order the Bench Service Kit as HP part number 11802A. Refer to Figure 1-2 on page 1-19 for a

complete parts listing of the Bench Service Kit.

Signal Generator Test System, HP 8902SG, including HP 11808A software

This test system provides the necessary equipment for automated performance testing of the HP
8642A/B.

50 Ohm to 75 Ohm Adapter

This adapter is an impedance-matching network required for testing with 75 ohm cabling and/or loads.
Order the adapter with HP part number 11687A.

Fiberglass Transit Case

Order this protective case for shipping and transporting the HP 8642A/B Signal Generator as HP part
number 9211-2661.

Rack-Slide Kit

This heavy-duty, rack-slide kit is the kit recommended for the HP 8642A/B Signal Generator. Order
the Rack-Slide Kit for instrument cabinet frames assembled with metric hardware as HP part number
08642-80059. Order the Rack-Slide Kit for instrument cabinet frames assembled with English hardware
as HP part number 08642-80058. (Note that if metric hardware is used, the rear panel of the instrument
mentions that fact.)

rev.30SEP88

1-5

General Information

1-11.

HOW TO USE THE RECOMMENDED TEST EQUIPMENT TABLE

Table 1-3 lists the test equipment required for testing, adjusting, and servicing the Signal Generator.
The critical specification column describes the essential requirements for each piece of test equipment.
Other equipment can be substituted if it meets or exceeds these critical specifications.

Alternate models are suggested in Table 1-4. Some reasons for recommending an alternate model might
be its HP-IB compatibility or its ability to replace two or more single models.

1-12. INSTRUMENTS COVERED BY THIS MANUAL

Serial Numbers.

Attached to the instrument is a serial-number plate. The serial number is in the form: 0000A00000.
The first four digits and the letter are the serial prefix. The last five digits form the suffix that is unique
to each instrument. The contents of this manual apply directly to instruments having the same serial
prefix(es) as those listed at the beginning of Volume 1.

Manual Updates.

An instrument manufactured after the printing of this manual may have a serial prefix that is not listed
at the beginning of Volume 1. An unlisted serial prefix number indicates that the instrument differs in
some way from those documented in this manual.

Model 8642A/B

A "MANUAL UPDATES" packet is shipped with the manual when necessary to provide you with the
most current information available at the time of shipment. These packets consist of replacement and
addition pages which should be incorporated into the manual to bring it up to date.

Hewlett-Packard offers a Documentation Update Service that will provide you with further updates as
they become available.

If you operate or service instruments of different serial prefixes, we strongly recommend that you join
this service immediately to ensure that your manual is kept current. For more information refer to the
Documentation Update Service reply card included with this manual or contact:

Hewlett-Packard Company
Spokane Division
Technical Writing Department
24001 E. Mission - TAF C-34
Spokane, WA 99220

[phone]

1-6

rev.30SEP88

Model 8642A/B

General Information

Table 1-1. Specifications

Electrical Characteristic Performance Limits

FREQUENCY

Range

HP8642A
HP 8642B

Carrier Frequency

1

Band

10 (8642B only)

9
8
7

6
5
4
3
2

1

HET

Resolution

100 kHz to 1057.5 MHz
100 kHz to 2115 MHz

1057.500001-2115.000000 MHz

528.750001-1057.500000 MHz

264.375001-

132.187501-

66.093751-

33.046876- 66.093750 MHz

16.523438- 33.046875 MHz

8.261717- 16.523427 MHz

4.130860- 8.261718 MHz

0.100000- 4.130859 MHz

0.100000- 132.187500 MHz

1 Hz (0.1 Hz with Special Function 240

or 241)

528.750000 MHz

264.375000 MHz

132.187500 MHz

(1

of 6)

Conditions

2

Stability

INTERNAL REFERENCE
OSCILLATOR

Standard
Option 001 Aging Rate

SPECTRAL PURITY

SSB Phase Noise

Band

10

9
8
7

6
5
4

3

2

1

HET

Same as reference oscillator

See Supplemental Characteristics

<l0~9/day

SSB Phase

Noise, 20 kHz
offset from
carrier

-125 dBc/Hz

-134dBc/Hz

-137 dBc/Hz

-141 dBc/Hz

-144 dBc/Hz

-145 dBc/Hz

-146 dBc/Hz

-147 dBc/Hz

-148 dBc/Hz

-134 dBc/Hz

-125 dBc/Hz

SSB Phase
Noise Floor,
200 kHz offset
from carrier

-134 dBc/Hz

-143 dBc/Hz

-144 dBc/Hz

-144 dBc/Hz

-145 dBc/Hz

-145 dBc/Hz

-147 dBc/Hz

-148 dBc/Hz

-149 dBc/Hz

-135 dBc/Hz

-137 dBc/Hz

After 8-day warm-up

CW, AM, or Angle Modulation

<1/60 Maximum Peak Deviation

Both generators cover their ranges in one continuous span. However, many other specifications are dependent on carrier

frequency. To simplify such specifications, the 8642A and 8542B carrier frequency ranges are divided into bands.

Band 9, 8642B carrier frequency ranges is 528.7500005 MHz to 1057.500000 MHz.

rei:.10JAN91

General Information

Model 8642A/B

Electrical Characteristic

SPECTRAL PURITY (Cont'd)

Residual FM

Band

10 (8642B only)

9
8

1-7

HET

Residual AM

Spurious Output Signal

Harmonics

Sub-harmonics
Non-harmonics

OUTPUT

Level Range

Maximum Level Available

Table 1-2. Specifications

Performance Limits Conditions

Post Detection Bandwidth

0.3 to 3.0 kHz
<5 Hz rms
<2 Hz rms
<1.2 Hz rms
<1 Hz rms
<3.5 Hz rms

<0.01%

8642A/B,
Bands 1-9, HET

-30dBc

-20 dBc
none

-100 dBc

From Maximum Level Available to

-140 dBm (0.023 /j.V into 50 ohms)

+20 dBm (2.24V)
+19 dBm(2.00V)
+18dBm(1.78V)
+17 dBm (1.59V)
+16 dBm (1.41V)

3

0.05 to 15.00 kHz

AM rms

8642B,

Band 10

(2

of 6)

<9 Hz rms
<5 Hz rms
<2 Hz rms
<1.2 Hz rms
<5 Hz rms

-25 dBc

-20 dBc

-45 dBc

-94 dBc

CW.AM or Angle Modulation
< V3 Maximum Peak Deviation

0.3 to 3.0 kHz
Post Detection Bandwidth

Output level < +10 dBm

Output level < +16 dBm

>10 kHz from the carrier

8642A (except

Opt. 003)

bands 1 thru 7
DNA
band 8, HET
n/a
band 9

8642B and

8642A Opt.003

bands 1 thru 7
band 8
HET
band 9
band10(8642B)

Resolution

Absolute Level Accuracy

Flatness
Impedance
SWR

Reverse Power Protection

Third Order Intermodulation

Available Calibration Units

Not specified in HET band.

1

Absolute output accuracy consists of allowances for detector linearity, temperature, flatness, and attenuator accuracy.

4

0.1 dB
±1 dB
< ±0.75 dB
50 ohms nominal

<1.5:1

<2.0:1
50W, 25 VdC, 8642A
25W, 50 VdC, 8642B

< -50 dBc at + 10 dBm. Typically

decreases 10 dB for every 5 dB

of combined level decrease

dmb,

V, mV, pV, dB^V, EMF V,
EMF mV, EMF /zV, dB EMF /iV.
REL ZERO or REF SET can be
used to obtain settings such as

dbV or dBf.

Output levels > -127 dBm
Output level, +10 dBm

Output levels <0 dBm

Output levels <0 dBm

Two signal generators

spaced 25 kHz apart into a

resistive combiner

1-8

with

frequencies

rev.l8MAR91

Model 8642A/B

General Information

Table 1-1. Specifications (part of 3 of 6)

Electrical Characteristics

AMPLITUDE MODULATION

Depth
Resolution
Indicator Accuracy

(1 kHz rate, up to 90% AM)

AM Distortion at 1 kHz Rate

AM 3 dB Bandwidth

(Depth <90%)

Incidental *M

(1 kHz rate and 30% AM)

5

AM bandwidth is increased to 100 kHz in these bands by using Special Function 8 (prefer HET band).

0% to 99.9%

0.1%
±(3.5%

±(5%

8642A Bands 1-8, HET;

8642B Bands 1-9

8642A Band 9, HET;
8642B Band 10, HET

dc to 100 kHz
20 Hz to 100 kHz

dc to 20 kHz
20 Hz to 20 kHz

<0.2 radians peak

Performance Limits

of setting +1% AM)

of setting +1% AM)

<1%
<2%
<4%

<2%
<4%
<6%

Conditions

Output level <+10 dBm

8642A Bands 1-8, HET;
8642B Bands 1-9, HET

8642A Band 9,
8642B Band 10

0% to 30% AM
30%

to 70% AM

70%

to 90% AM

0% to 30% AM
30%

to 70% AM

70%

to 90% AM

External dc, bands 1, 5 thru
External ac and internal,

bands 1, 5 thru 10
External dc, bands5 2, 3, 4
External ac and internal,

bands5 2, 3, 4

10

rev.07JUNE85

1-8.1

Model 8642A/B General Information

Table

1-1.

Specifications (part

of 3 of 6)

Electrical Characteristics

FREQUENCY MODULATION

Maximum

FM

Deviation

Band

10 (8642B only)

9
8
7
6
5
4
3
2

1

HET

10 (8642B only)

9
8
7
6
5
4
3

2
1

HET

Resolution

Indicator Accuracy

(Rates

20 Hz to 100 kHz)

FM Distortion

(Rates

20 Hz to 100 kHz)

FM

3 dB

Bandwidth

Performance Limits

3

MHz

1.5

MHz

750

kHz

375

kHz

187.5 kHz

93.75 kHz

46.875 kHz

23.437 kHz

11.718 kHz

93.75 kHz

1.5

MHz

(the smaller
3

MHz or f

1.5

MHz or f
750
375

187.5

93.75

46.875

23.437

11.718

93.75

1.5

MHz or f

0.7%

6
6

6

kHz or f
kHz or f

kHz or f
kHz or f

kHz or f
kHz or f
kHz or f

kHz or f

of

setting

6
6
6

of:)

X 2160

mod

X 1080

mod

X 540

mod

X 270

mod

mod
mod

mod
mod
mod

mod

X 1080

mod

or

X 135
X

67.5

X

33.75

X

16.875

X

8.4375

X

67.5

0.0004%
maximum deviation, whichever
larger

±(5%

of

setting

+10 Hz)

4%

2%

0.4%
dc

to

200

kHz

20

Hz to

200

kHz

20

Hz to 100 kHz

Conditions

External

External

6

6

6

6
6

6

dc

ac

coupled

coupled

or

internal

of

is

For maximum dc-coupled deviation
For

1/2 max

For

1/15 max

External
External

dc-coupled deviation

dc-coupled deviation

dc

source

ac

source

Internal source

6

Maximum deviation may

than

the

values shown here.

rev.07JUNE85

be

increased up

HET

band

to tha

can als

shown

for

o

be

the HET band (0.1 MHz

selected with Special Function

to

132.1875

8.

Hz carrier frequency)

M

by

selecting deviation larger

1-9

General Information

Table 1-1. Specifications (4 of 6)

Electrical Characteristics

FREQUENCY MODULATION (Cont'd)

Incidental AM

Carrier Frequency Offset

When Entering FM or

PM Modes

PHASE MODULATION

Maximum Phase Deviation

Band

10 (8642B only)

9
8
7
6
5
4
3
2

1

HET

Resolution

Indicator Accuracy
$M Distortion
$M 3 dB Bandwidth

PULSE MODULATION

8

Pulse On/Off Ratio

Rise/Fall Time
Maximum Repetition Frequency
Minimum Pulse Width
Nominal Input Threshold Level

INTERNAL MODULATION
OSCILLATOR

Frequency Range
Frequency Resolution
Frequency Accuracy
Output Level Range
Output Level Resolution
Output Distortion (>0.5 Vpk)

Output Level Accuracy
Output Impedance

7

Maximum deviation may be increased up to that shown for the HET band
than the values shown here. HET band can also be selected with Special Function 8.

8

Output level accuracy is typically ±3 dB.

0.3%

none
<500 Hz
<1 kHz

200 radians

100 radians
50 radians
25 radians

12.5 radians

6.25 radians

3.125 radians

1.5625

0.78125 radians

6.25 radians

100 radians

0.7% of setting or 0.0004% of

±(5%

<0.4%
20 Hz to 15 kHz

dcto 15 kHz

2509A to 2550A

>30dB

>45dB

<3.5 MS
50 kHz

6 MS

1.5V

20 Hz to 100 kHz

1

% of setting

2%

0 to 3.3 Vpk
4 mV

<0.02%

<0.15%

±(4%
600 ohms ±10%

Performance Limits

7
7

7

radians

maximum deviation, whichever is
larger

of setting +0.09 radians)

of setting

+15 mV)

7

7

7

2551A and above

>40dB
>80dB

<400 ns
100 kHz

2 MS

1.5V

(0.1

MHz to 132.1875 MHz carrier frequency) by selecting deviation larger

Model 8642A/B

Conditions

20 kHz peak deviation, 1 kHz rate,
>400 kHz carrier frequency, output
level <+15dBm

ac and internal
dc, 8642A/B Bands 1-9, HET
dc, 8642B Band 10

1 kHz rate
1 kHz rate
Internal and external ac

External dc
Output levels <+15 dBm

8642A/B Bands 1-9, HET
8642B,

Band 10

10%

to 90%

External dc

Into 600 ohms

0.02 kHz to 15.8 kHz
>15.8 kHz

Within 1s

1-10

rev.!6MAY86

Model 8642A/B

Electrical Characteristics

GENERAL

Operating Temperature Range
Storage Temperature Range

Power Requirements

Line Voltage
Line Frequency
Power Dissipation

Electromagnetic Interference

(Leakage)

Net Weight
Shipping Weight
Dimensions

Height
Width
Depth

HP SYSTEM

II

Module Size

Electrical Characteristics

FREQUENCY SWEEP

Digitally Stepped Sweep

Start

and

Stop Sweep

Time

Table 1-1. Specifications (5 of 6)

Performance Limits

0°

to

55°C

-55°

to

+75°C

100V,

120V,

220V,

or

240V

47.5

to 440 Hz

300

VA max

MIL

STD 461B and FTZ 1115

+5%,

-10%

Conducted
is within
STD
RE02.

the

461B

Interference
the standards
Also

RF

leakage

duced

in a
diameter, held
any surface,

<0dBm.

32.7

kg (71.5 lb)

43

kg (95 lb)

133

mm (5.25 in.)

425

mm

(16.75

617

mm (23.8 in.)

51AH

X 1W X 23D

nominal

in.)

nominal

nominal

Features

Sweeps between
End-points
In AUTO sweep mode, sweep must stay within
through

9, or

Maximum sweep time: 999s. Minimum sweep time:

number

of

end-points

two

selected end-points

can be

anywhere within

band

1, or

band

10, or the HET

distinct frequency points

and

sweep time.

in a

linear, step-wise manner.

the

frequency range

the

band.

is

automatically selected based

General Information

Conditions

and

radiated interference

requirements

methods CE03

is

set by FTZ 1115.

of <0.5

two-turn loop

2.5 cm

for

output levels

of the

range

275 ms. A

of MIL
and

also within

MV

2.5 cm in

away from

instrument.

of

bands

maximum

is in-

2

on the

Phase Continuous Sweep

Start-Stop Sweep

Maximum Sweep Span

Band

10 (8642B only)

9
8
7
6
5
4
3
2

1

HET

9

Maximum sweep span

span larger than

may be

the

span shown here.

increased

up to

HET

Instrument sweeps between

continuous manner.

End-points

can be

outside

the

(Start Frequency + Stop Frequency)

800

kHz

400

kHz

200

kHz

100

kHz

can

9
9

9

kHz

for the HET

also

be

9
9

9

band (0.1

selected with Special Function

MHz to

50 kHz

25 kHz

12.5 kHz

6.25 kHz

3.125 kHz
25 kHz
400

that shown

band

two

selected end-points

band,

but

4- 2

must

be

132.1875 MHz carrier frequency)

8.

in a

within

linear, phase

the

band.

by

selecting a frequency

1-11

General Information

Model 8642A/B

Table 1-1. Specifications (6 of 6)

Electrical Characteristics

FREQUENCY SWEEP (Cont'd)

Phase Continuous Sweep (Cont'd)

Sweep Time

X-Axis Output

Z-Axis Output

REMOTE OPERATIONS

HP-IB (IEEE 488-1978) Capability

Interface

Functions Controlled

HP-IB Address Select Code

Interface Function
IEEE-488 Functions

Implemented

Features

Maximum sweep time: 999s. Minimum sweep time: 5 ms. Maximum and
minimum sweep time are also dependent on end-point separation and
quency band selected.

0 to 10 Vdc, ±10%

TTL positive true for crt display blanking during retrace.

Hewlett-Packard Interface Bus (HP-IB). HP-IB is Hewlett-Packard's imple­mentation of IEEE Standard 488-1978.

All functions controlled from the front panel, with the exception of the

power switch and the knob, are programmable with the same accuracy

and resolution as in manual mode.

Settable via the front panel or over HP-IB from 00 to 30 (5-bit decimal
equivalent). (A listen-only mode is also available as 31.)

Listener, talker, and controller
SH1,

AH1, T6, TE0, L3, LEO, SR1, RL1, PP0, DC1, DT0, C1, C2, C3,

C28,

E2

fre-

1-12

Model 8642A/B

General Information

Table 1-2. Supplemental Characteristics (1 of 2)

Supplemental characteristics are typical, but non-warranted performance parameters, intended to be useful in instru­ment applications.

FREQUENCY
Underrange: 10 to 100 kHz.
Heterodyne Mode (HET, Special Function 8): The 8642A/B

can derive its output through a heterodyne mode in the
carrier frequency range from 0.1 MHz to 132.1875 MHz.
This improves modulation and some frequency sweep
characteristics at lower carrier frequencies.

Frequency Switching Time to Within 100 Hz of Final
Frequency:

Processor Delay

20 ms

Frequency Settling

65 ms

Total Time

85 ms

SPECTRAL PURITY

SSB Phase Noise at 1 GHz Carrier Frequency (dBc in 1 Hz
bandwidth):

10
Hz

-40

100

-75

Hz

1

kHz

-98

10

kHz

-131

20

kHz

-138

100
kHz

-146

200
kHz

-147

1

MHz

-147

10

MHz

-154

Measured SSB Phase Noise at 1 GHz:

0

_ -20

N

■

!-«

B -60

1-

■

CO

-160
10 100 Ik 10k 100k 1

Offset Frequency, Hz

. .

1 1 """

..1

. .

\ J

..1

. . ..-

M 1( MM

Mixed Modulation Types: Any two modulation types can
be simultaneously selected except for FM + *M and
AM + pulse modulation.

FREQUENCY MODULATION

Carrier Stability in FM Mode:

AC FM: Same as CW.
DC FM: <4 kHz/hour, 8642A/B bands 1-9, HET.

<8 kHz/hour, 8642B band 10.

FM Stereo Separation, Ext de-Coupled, HET Band (Special
Function 8): >50 dB, 1 kHz rate, 75 kHz deviation.

Low Distortion FM/$M (Special Function 5 or

112):

Distortion
in either FM or $M can be reduced with this function.
FM stereo separation unaffected.

FM Distortion in Special Function 7: <0.03% THD, <1/15
maximum deviation, external rates <50 kHz and inter­nal rates <15.8 kHz.

FM Pre-emphasis (Special Function 6): Provides pre­emphasis in FM with a 750

us

time constant. This is

useful when testing FM communications receivers.

AMPLITUDE MODULATION

(for V0R, ILS, Avionics Applications)

AM Phase Shift, DC Coupled, for Carrier Frequencies From
108

MHz to

118

MHz:
30 Hz rate: <±0.01°.
30 Hz to 10 kHz rate: <±3°.
Difference from 9 kHz to 11 kHz rates: <2°.

AM Flatness, DC Coupled External AM:

<0.04 dB, 90 to 150 Hz, 108 to 118 MHz and 329

to 335 MHz. (<0.00092 DDM @ 20% AM and

<0.0019 DDM @ 40% AM.)
<0.1 dB, 9 to 11 kHz, 108 to 118 MHz.

SSB AM Noise Floor at 200 kHz Offset, +16 dBm:

<-157 dBc/Hz, band 2 through 9.

<-150 dBc/Hz, band 10.

MODULATION

External Input Impedance: 600 ohms, ±10%.

External Input Level Required: 1 Vpeak for specified accu-

racy. Front-panel annunciators indicate application of
1V peak signal ±5%, 20 Hz to 100 kHz. When greater
accuracy is required, modulation drive voltage should
be monitored externally.

Modulation Source Capability: All modulation types can be
driven with either an internal or external modulation
source. AM, FM, and $M can also be driven simultane­ously by both internal and external modulation sources.

OUTPUT

Absolute Accuracy: ±3 dB, output level <-127dBm.
Output Level Switching

Time:

<100 ms from receipt of last

controller command.
Amplitude Sweep, in CW and Angle Modulation Modes:

Range: 20 dB log (or linear with Special Function 122)

sweep (10 dB underrange available).

Sweep Time: 20 ms minimum, 999s maximum.
Accuracy:

± 1

dB over highest 10 dB. ±3 dB over sec-

ond highest 10dB.

Attenuator Range Hold (Special Function 9): The internal
step attenuator can be fixed and the electronic level
vernier varied up to 30 dB for monotonic level setting.
This is useful in measuring of receiver squelch
hysteresis.

1-13

General Information

Model 8642A/B

Table 1-2. Supplemental Characteristics (2 of 2)

Supplemental characteristics are typical, but non-warranted performance parameters, intended to be useful in instru­ment applications.

INTERNAL REFERENCE OSCILLATOR EXTERNAL REFERENCE

Characteristic
Aging rate

Temperature

Line voltage

Output, rear panel:

Frequency: 10 MHz.

Level:

>1.4 Vp-p into 50 ohms.

Impedance: 75 ohms.

±2 ppm/year
±4 ppm, 0° to 55°C

±0.1 ppm,

Standard

+5%,

-10%

High Stability

(opt. 001)

See Table 1-1

±7 x 10~9,

0° to 55°C

±3 x 10-9,

+5%,

-10%

Input, rear panel:

Frequency: 1, 2, 5, or 10 MHz, ±25 ppm.

Level:

<6 Vp-p.

Impedance: 50 ohms.

rev.l8MAY89

Model 8642A/B

Instrument

Table

1-3.

Recommended Test Equipment

Critical Specification

(1 of 2)

Recommended Model

General Information

1

Use

Attenuator, Fixed

Digital Voltmeter

(DVM)

Frequency Standard

Low-Noise Amplifier

Low-Pass Filter

Measuring Receiver

Mixer

Mixer

Oscilloscope

Service Accessory

Kit

Signal Generator

Spectrum Analyzer

1

P = Performance Testing,

2

HP 11801A services

the HP

Attenuation:
Frequency Range:

Accuracy:

SWR:
Accuracy:

Range:
Sensitivity:

Frequency:
Long Term Stability:

As

±0.1 dB

<1.3

41/2

10 mV to

10 /A/

10 MHz

required

100

by

kHz-2115

digit, ±0.05% reading

600V

<1 X

Input/Output Impedance:
Frequency Bandwidth:
Noise Figure:
Gain:

40 ±1 dB

Bandwidth:

Impedance:

<3 dB

1 MHz

50

ohms

1 kHz to 1 MHz

Modulation:

Accuracy:
AM Rejection:

FM Rejection: <0.2%

±2% of

(3

kHz BW)

reading

<30 Hz at 50% AM

AM (50 kHz FM)

Power:

Frequency Range:
Power Range:

Accuracy:

±0.2 dB

0.1 to 2115 MHz

+20 to -20 dBm

Tuned Power:

Frequency Range:
Power Range:

Accuracy:

±0.5 dB

2.5 MHz to 1300 MHz

0 dBm to -127 dBm

Frequency:

Resolution:

10 Hz

Audio Distortion (Typical Residual):

<-60

dB

Frequency:

Type:

Frequency:

Type:
Vertical Sensitivity:

Bandwidth:
Required

See Table

Frequency:
Output:

0.2 to 500 MHz

Double Balanced

500 to 2115 MHz

Double Balanced

10

mV/division

100 MHz

for

servicing

1-5 for

and

parts listing

.1 to 2115 MHz

-50 dBm to +18 dBm

SSB Phase Noise: same

specification

Frequency Range:
Resolution Bandwidth:
Dynamic Range:

A =

Adjustments,

8642A,

HP

for the

90 dB

T =

Troubleshooting

11801B services

Generator under test.

100 Hz to

<10 Hz

the HP

performance test

MHz

±1

10"10/24 hours

50

ohms

troubleshooting.

and

description.

or

better than

6345

MHz

8642B,

and HP

11801C services

digit

the

HP 8491A

HP 3456A

HP 5065A

HP 08640-60506

Requires

19-25 Vdc

Power Supply

See Figure

1-1

HP 8902A

Opt.

002

(Opt.

003 for

Optional Residual

FM

HP 10514A

Watkins-Johnson

M94C

HP 1980B/HP 19860A

(see Table

1-4)

HP 11801A/B/C

HP 8642B

(see Table

1-4)

HP 8566A/B

both.

Test)

2

A,

P,

P,

P,

A, T

A,

P,

A, T

P,

A, T

p

T

A

P

P

A

P

P

T

1-15

General Information

Instrument

SWR Bridge

Function Generator

Table 1-3. Recommended Test Equipment (2 of 2)

Critical Specification
Directivity: >40 dB
Max. Rate: >50 kHz

Min.

Pulse Width: <6 ^sec

Rise Time: <100 nsec

Recommended Model

Wiltron 60NF50

HP 8116A

Model 8642A/B

1

Use

P
P

Signal Generator
(optional)

Short, Type N

Feedthrough Termination,
BNC

1

P = Performance Testing, A = Adjustments, T = Troubleshooting

Residual SSB phase noise in 1 Hz BW

(320 MHz < fc < 640 MHz) with an offset
from the carrier of:

-100 dBc at 10 Hz,

-121 dBc at 1 kHz, and

-131 dBc at 10 kHz

z0 = 600 ohms ±1%

HP 8662A (for

Optional Residual FM Test)

HP 11512A
HP 11095A

(see Table 1-4)

P

P
P

Instrument

Digital Voltmeter (DVM)

Signal Generator

Oscilloscope

Feedthrough Termina-

tion,

BNC

1-16

Figure 1-1. 1 MHz Low-Pass Filter

Table 1-4. Alternative Test Equipment

Recommended Model

HP 3456A

HP 8642B

HP 1980B/HP 19860A

HP 11095A

Suggested Alternative

HP 3455A

HP 8340A
HP 8341A
HP 8663A
HP 8662A

HP 1740A

HP 0757-1100

Advantage of Alternative

Satisfies the requirements for testing
the Signal Generators.

Satisfies the requirements for testing
the Signal Generator except:

1.

Third Order Intermodulation Test re-

quires +18dBm at 1050 MHz.

2.

Optional Phase Noise Test requires

phase noise less than or equal to the
unit under test.

3. The 8662A satisfies the RF frequency
range for 8642A testing.

Satisfies the requirement for testing the
Signal Generator.

Satisfies the requirement for testing the
Signal Generator.

Model 8642A/B

HP

Part

Number

08642-60889

08642-69889
08642-60890

08642-69890
08642-60891

08642-69891
08642-60892

08642-69892

08642-60893
08642-69893

08642-60894
08642-69894

08642-60895
08642-69895

08642-60896
08642-69896

08642-60897
08642-69897

08642-60898
08642-69898

08642-60899

08642-69899
08642-60842

08642-69842
08642-60843

08642-69843

08642-60844
08642-69844

. 2110-0010

2110-0002

2110-0036
2110-0004

08642-60845

08642-69845

08642-60133
08642-69133

08642-80019

2110-0003
5021-0844

1250-0832
1250-1697
1250-0827
8710-0033
9222-0779
9222-0698
8710-1465
8710-1493

8710-1541
08662-60080
08662-60075

1400-0249

Check Digit

7
5

0
8

1
9

2
0

3
1

4
2

5

3

6

4

7
5

8
6

9
7

2
0

3

1

4
2

9
9
9
1

5
3

4
2

7
0

1
8
5

1

2

1

3

8

2

1
4
7

0

Table 1-5. HP 11801C On-Site Service Kit (1 of 1)

Quantity

5

10

5
5

8
8

1
5
2

2
2
4

1

15

8
1
1
1
4
1

10

Keyboard/LCD Display Module
Keyboard/LCD Display Module (Restored)

Modulation Module
Modulation Module (Restored)

Processor/Memory Module
Processor/Memory Module (Restored)

Latch Module
Latch Module (Restored)

FM Loop/Counter/Timebase Module
FM Loop/Counter/Timebase Module (Restored)

SAWR Loop Module
SAWR Loop Module (Restored)

IF Loop Module
IF Loop Module (Restored)

Reference Loop Module
Reference Loop Module (Restored)

Sum Loop/Divider Module
Sum Loop/Divider Module (Restored)

Output Filters/ALC Module
Output Filters/ALC Module (Restored)

Heterodyne Module
Heterodyne Module (Restored)

Attenuator Module—8642A Only
Attenuator Module (Restored) 8642A Only

Power Supply Regulators/Attenuator Drivers Module

Power Supply Regulators/Attenuator Drivers Module

(Restored)

Power Supply Rectifier/Filter Module
Power Supply Rectifier/Filter Module (Restored)

'Fuse 5A 250V NTD 1.25 X .25 UL

Fuse 2A 250V NTD 1.25 X .25 UL
Fuse 8A 125V NTD 1.25 X .25 UL
Fuse .25A 250V NTD 1.25 X .25 UL

Doubler/Attenuator Module—8642B Only
Doubler/Attenuator Module (Restored) 8642B Only

Calibration Module
Calibration Module (Restored)

Fan Assembly
Fuse 3A 250V NTD 1.25 X .25 UL
Adapter, BNC to Banana Plug

Adapter, Coax STR Female BNC to Female SMC
Adapter, Coax STR Male SMA to Female SMC
Adapter, Coax STR Male SMC to Male SMC
Alignment Tool, Screwdriver .075
Bag,

Anti-static 16 x 0 inch Opening

Bag,

Anti-static 4x0 inch Opening
Bit, Torx T10
Bit, Torx T15
Bit, Torx T5
Cable Assembly, Short
Cable Assembly, Service Kit, Long
Cable Tie, .062-.625 Dia. .091 Wd Nylon

Description

General Information

Reference

Designation

A1

A2

A3

A4

A6

A7

A9

A11

A12

A13

A14

A16

A17

A18

A18F1

A18F2/F4

A18F3
A18F5

A19

A20

B1
F1

1-17

General Information

HP

Part

Number

Table 1-5. HP 11801C On-Site Service Kit (2 of 2)

Check Digit

Quantity

Description

Model 8642A/B

Reference

Designation

11801-90201

11801-90203

1251-8601
1251-8248
1251-8105
1251-8823

08642-20041

11801-90202
11801-90204
08642-40073

9300-0980
2140-0536

08642-90020

9320-3944

11801-90001

34118A

08642-00070

8730-0012
9300-0985

1250-0781

1250-0837

08642-80053

1251-5653

0
2
7
8
6
5
9

1
3
9
2

7

1

6

8

0

2

1

7

6

3

9

3

10

Case,

Large

Case,

Small
Connector, Ribbon Cable, 34 Pin
Connector, Ribbon Cable, 26 Pin
Connector, Ribbon Cable, 16 Pin

Connector, Ribbon Cable, 14 Pin
Extender Post
Foam,

Top and Bottom (for large case)

Foam,

Top and Bottom (for small case)
Fuse Puller
Grounding Strap, Anti-Static
Lamp,

Incand. 5 Vdc, 115 mA, T-1 Bulb
On-Site Service Manual
Storage Box, Plastic, 1 Compartment
Storage Box, Plastic, 10 Compartments
Tag,

Blue Stripe

Tag,

Defective
Test Lead Kit
Wrench,

Wrench,

Wristband,

BNC Tee (f, m, m)

• SMC Tee (m, m, m)
Power Supply Test Connector

Connector, Ribbon Cable, 50 Pin

RF Connector

Torque

Antistatic

1-18