HP 8642A User manual

HP 8642A/B
SYNTHESIZED SIGNAL GENERATOR
(Including Options 001, 002 and 003)
This manual applies directly to instruments with
serial numbers prefixed:
2427A to 2613A and all MAJOR changes that apply to your instrument
rcv.30A PRKd
For additional important information about serial
numbers, refer to “INSTRUMENTS COVERED BY
THIS MANUAL” in Section I.
@HEWLETT-PACKARD COMPANY 1985
EAST 24001 MISSION AVENUE, TAF C-34, SPOKANE, WASHINGTON, U.S.A. 99220
Operation/Calibration Manual Part Number 08642-90224
Service Manual 08642-90226
Microfiche Operating and Service Manual Part Number 08642-90109 Printed: August 1986
HEWLETT
PACKARD

COPYRIGHT AND DISCLAIMER NOTICE
Copyright - Agilent Technologies, Inc. Reproduced with the permission of Agilent
Technologies Inc. Agilent Technologies, Inc. makes no warranty of any kind with regard
to this material including, but not limited to, the implied warranties of merchantability
and fitness for a particular purpose. Agilent Technologies, Inc. is not liable for errors
contained herein or for incidental or consequential damages in connection with the
furnishing, performance, or use of this material or data.

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 Bureau of Standards, to the extent allowed by the Bureau’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 Office. Addresses are provided at
the back of this manual.

Model 8642A/B Safety Considerations
SAFETY CONSIDERATIONS
GENERAL
This product and related documentation must be re-
viewed 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 pro-
vided from the main power source to the product input
wiring terminals, power cord, or supplied power cord
set.
SAFETY SYMBOLS
A
, Instruction manual symbol: the product will
* be marked with this symbol when it
is necessary for the user to refer to the instruction
manual (refer to Table of Contents).
f Indicates hazardous voltages.
1, Indicates earth (ground) terminal.
The WARNING sign denotes a
hazard. It calls attention to a
procedure, practice, or the like, which, if not correctly
performed or adhered to, could result in personal inju-
ry. Do not proceed beyond a WARNING sign until the
indicated conditions are fully understood and met.
The CAUTION sign denotes a haz-
ard. It calls attention to an
operating procedure, practice, or the like, which, if not
correctly performed or adhered to, could result in dam-
age to or destruction of part or all of the product. Do
not proceed beyond a CAUTION sign until the indi-
cated conditions are fully understood and met.
Any interruption of the protective (ground-
ing) conductor (inside or outside the instru-
ment) or disconnecting the protective earth
terminal will cause a potential shock hazard
that could result in personal injury. (Ground-
ing 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 unin-
tended 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 fw use by service-
trained personnel only. To avoid dangerous
electric shock, do not perform any servicing
unless qualified to do so.
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, re-
sult in personal injury.
Capacitors inside the instrument may still be
charged even if the instrument has been dis-
connected from its source of supply.
For continued protection against fire hazard,
replace the line fuse(s) only with 250V fuse(s)
of the same current rating and type (for exam-
ple, normal blow, time delay, etc.). Do not use
repaired fuses or short circuited
fuseholders.

Model 8642A/B Contents
TABLE OF CONTENTS
Section I
GENERAL INFORMATION
Introduction to the Operating and Service Manual
l-1
Volume I, Operating Manual ................... l-1
Volumes II through IV, Service Manual ......... l-1
Where to Find Instrument Specifications ........... l-l
Where to Find Safety Considerations .............. l-2
Hewlett-Packard Interface Bus (HP-IB) Enables
Remote Control of the Instrument .............. 1-2
Selecting the HP-IB Address ................... l-2
HP-IB Capabilities ............................ l-2
An Explanation of the On-Site Service Strategy .... 1-3
Hardware Features ............................ l-3
Built-In Test Features ......................... 1-3
Firmware Features ............................ l-3
Quick Reference Manual Information .............. l-3
How the Operating Fundamentals Can Help You
Learn to Operate the Instrument ............... l-3
Accessories Supplied With the 8642A/B ............ l-4
Options Available With the Instrument ............ l-4
Electrical Options ............................. l-4
Mechanical Options ........................... l-4
Documentation Options ........................ l-5
Equipment That Can Be Ordered for the Signal
Generator .................................... l-5
On-Site Service Kits .......................... l-5
Bench Service Kit ............................ l-5
Signal Generator Test System, HP 89528 ....... l-5
50 Ohm to 75 Ohm Adapter ................... l-5
Fiberglass Transit Case ........................ l-5
Rack-Slide Kit ............................... l-5
How to Use the Recommended Test Equipment
Table ........................................ l-
5
Instruments Covered By This Manual ............. l-6
Section II
INSTALLATION
Introduction
Initial Inspection
Preparation for Use
Power Requirements
Power Cables
HP-IB Address Selection
Interconnections
Mating Connectors
Operating Environment
Rack Mounting
Storage and Shipment
Environment
Packaging
2-l
2-l
2-l
2-l
2-3
2-5
2-5
2-5
2-5
2-5
2-6
2-6
2-6
Section Ill
OPERATION
Introduction to Section III ....................... 3-l
Operating Information ........................... 3-3
HP-IB Table of Contents ........................ 3-5
HP-IB Remote Operation ........................ 3-7
HP-IB Address .................................. 3-8
HP-IB Capabilities .............................. 3-9
Data Input .................................... 3-11
Data Output ................................... 3-15
Clear .......................................... 3-24
Remote, Local ................................. 3-25
Local Lockout, Set Local ........................ 3-26
Service Request ................................ 3-27
Status Byte .................................. ..3-2 9
Additional HP-IB Information ................... 3-31
HP-IB Codes Summary ......................... 3-32
HP-IB Related Front-Panel Keys ................ 3-34
HP-IB Related Terms .......................... 3-35
RF Frequency
RF Frequency Contents ...................... 3-37
RF Frequency ............................... 3-39
Relative RF Frequency ....................... 3-45
RF Frequency Sweep ......................... 3-49
Amplitude
Amplitude Contents .......................... 3-67
Amplitude ................................... 3-69
Relative Amplitude ........................... 3-77
Amplitude Sweep ............................ 3-83
Modulation
Modulation Contents ......................... 3-95
Modulation, AM ............................. 3-97
Modulation, FM ............................ 3-105
Modulation, @JM ............................ 3-119
Modulation, Pulse ........................... 3-127
Modulation Oscillator ....................... 3-131
Setting Modifications
Setting Modifications Contents ............... 3-135
Instrument Preset, Partial Preset ............. 3-137
Knob .................................... ..3-14 1
Step, Increment Set ......................... 3-149
Entry Off ................................ ..3-15 3
Recall Registers
Recall Registers Contents .................... 3-155
Save/Recall ................................ 3-157
Sequence ................................... 3-161
Special Functions
Special Functions Contents .................. 3-165
Special Functions ........................... 3-167
Messages
Messages Contents .......................... 3-177
Operating Messages ......................... 3-179
Appendixes
Appendix A: Glossary ....................... 3-199
Appendix B: Writing Messages to the Display 3-201
Appendix C: Amplitude Units Conversion ...... 3-205
Appendix D: Display Annunciators and
Abbreviations ............................ 3-207
Appendix E: Individual Instrument
Identification ........................... 3-208.1
V
- -...--- --..-~ .

Contents Model 8642A/B
CONTENTS
SECTION 4 SECTION 5
PERFORMANCE TESTS ADJUSTMENTS
Introduction ................... 4-3
Recommended Test Equipment ........ 4-3
Test Record ................... 4-3
Abbreviated Performance Testing ....... 4-4
Level Accuracy and Flatness Tests ....... 4-6
Harmonics Tests ................. 4- 12
Pulse On/Off Ratio Test ............. 4- 14
Residuals Tests .................. 4- I6
AM, FM, and (PM Tests ............. 4- 18
Extended FM Dist.ortion Test ......... 4-25
Internal Modulation Oscillator Tests ...... 4-27
SWR ........................ 4-30
Spurious Test ................... 4-35
Third Order Intermodulation .......... 4-37
SSB Phase Noise Test .............. 4-39
SSB Phase Noise Test (Optional) ........ 4-42
Extended Pulse Tests .............. 4-46
Optional Residual FM Test ........... 4-49
Internal Time Base Aging Rate Test ...... 4-51
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
vi

HP 8642A/B
SYNTHESIZED SIGNAL GENERATOR
OPERATION AND CALIBRATION MANUAL
(Including Options 001, 002 and 003)
SERIAL NUMBERS
This manual applies directly to modules with serial
numbers prefixed:
2427A to 2647A and all MAJOR changes that apply to your instruments operations.
rev.14 JAN87
For additional important information about serial
numbers, refer to “INSTRUMENTS COVERED BY
THIS MANUAL” in Section I.
@HEWLETT-PACKARD COMPANY 1985
EAST 24001 MISSION AVENUE TAF C-34, SPOKANE, WASHINGTON, U.S.A. 99220
Opsmtion/Calibratlon Manual Part No. 06642-90224
Other Documents AvaIlable:
Microfiche Operstlon/Calibratlon Manual Part Number (Volume 1) 08642-90225
Service Manual Part Number (Volume 2, 3, 4) 08642-90226
Microflche Servlce Manual Part No. 08642-90227 Printed in the USA: JANUARY 1985
c!a
HEWLETT
PACKARD
.-

Model 8642A/B
SECTION I
GENERAL INFORMATION
General Information
l-l. 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 Model 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 I, Operating Manual
Operating Fundamentals. This booklet provides operating exercises to enable you to easily
operate the instrument’s basic functions.
Section I General Information.
----L--------- 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.
Section II, Installation. Installation covers initial inspection, preparation for use, and storage
___-
and shipment.
Section III Operation. Operation provides HP-IB operating information (including HP-IB
--A
address selection) and detailed operating information for either the beginning or
experienced user. A glossary and index are provided at the end of Section Ill.
Volumes II Through IV, Service Manual
Section IV Performance Tests. Performance Tests enable you to check the performance of
A--------
the instrument against the specifications listed in Table I- 1.
Section V, Adjustments. The adjustment procedures that are normally found in this section
are now located in Section VIII with the aDpropriate troubleshooting procedures and
schema tics.
Section VI, Replaceable Parts Replaceable Parts lists all replaceable parts and assemblies.
Section VII Instrument Chaa Instrument changes provide backdating information, and
----i-------
retrofitting and modification information.
Section VIII, Service. Service provides the information required to adjust and repair the
Lrument.
1-2. WHERE TO FIND INSTRl’hlk:NT SPECIFICA’I’~0~S
Instrument specifications are listed in Table 1- 1 (IT*~‘ZCl-7). These specifications are the
pcrfc~rniallie standards or limits against which the I’~’(, ;Iruent can be tested. Supplemental
characteristics are listed in Table l-2 (page 1- 13). Supplemental characteristics are not
t:u;lranteed specifications but are typical characteristics included as additiorlal information.
l-1

General Information Model 8642A/B
1-3. WHERE TOFINDSAFETYCONSIDERATIONS
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 I for a summary of
that information.
1-4. HE~LETT-PA~KARDINTERFA~EBUS(HP-IB)ENABLESREMOTECONTROLOF
THEINSTRUMENT-
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 HP Interface Bus. HP-IB is Hewlett-Packard’s
implementation of IEEE Standard 488 and the identical ANSI Standard MCl.1, (Refer to the
HP-IB portion of Section III 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 j-bit address code
can be displayed on and changed from the front panel. Refer to HP-IB Address in the HP-IB
portion of Section III for information regarding changing the HP-IB address.
HP-IB Capabilities
This Signal Generator’s HP-IB capabilities are defined by the following list of interface
functions. For more information, refer to page 3-9.
Source Handshake
Acceptor Handshake
Talker
Extended Talker
Listener
Extended Listener
Service Request
Remote Local
Parallel Poll
Device Clear
Device Trigger
Controller
Driver Electronics
SHl
AH1
T6
TEO
L3
LEO
SRI
RLl
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)
l-2