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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
Any interruption of the protective (ground-
instructions before operation. ing) conductor (inside or outside the instru-
This product is a Safety Class I instrument (provided ment) or disconnecting the protective earth
with a protective earth terminal). terminal will cause a potential shock hazard
that could result in personal injury. (Ground-
BEFORE APPLYING POWER ing one conductor of a two conductor outlet
Verify that the product is set to match the available is not sufficient protection).
line voltage and the correct fuse is installed.
Whenever it is likely that the protection has
SAFETY EARTH GROUND been impaired, the instrument must be made
inoperative and be secured against any unin-
An uninterruptible safety earth ground must be pro-
vided from the main power source to the product input tended operation.
wiring terminals, power cord, or supplied power cord
set. If this instrument is to be energized via an
autotransformer (for voltage reduction) make
SAFETY SYMBOLS sure the common terminal is connected to the
earth terminal of the power source.
,
Instruction manual symbol: the product will
A*be marked with this symbol when it
is necessary for the user to refer to the instruction Servicing instructions are fw use by service-
manual (refer to Table of Contents). trained personnel only. To avoid dangerous
electric shock, do not perform any servicing
unless qualified to do so.
Indicates hazardous voltages.
f
Adjustments described in the manual are per-
1, Indicates earth (ground) terminal.
formed with power supplied to the instrument
while protective covers are removed. Energy
The WARNING sign denotes a
available at many points may, if contacted, re-
hazard. It calls attention to a
sult in personal injury.
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 Capacitors inside the instrument may still be
indicated conditions are fully understood and met. charged even if the instrument has been dis-
connected from its source of supply.
The CAUTION sign denotes a haz-
ard. It calls attention to an For continued protection against fire hazard,
operating procedure, practice, or the like, which, if not replace the line fuse(s) only with 250V fuse(s)
correctly performed or adhered to, could result in dam- of the same current rating and type (for exam-
age to or destruction of part or all of the product. Do ple, normal blow, time delay, etc.). Do not use
not proceed beyond a CAUTION sign until the indi- repaired fuses or short circuited
cated conditions are fully understood and met. fuseholders.
Model 8642A/B Contents
TABLE OF CONTENTS
Section I Section Ill
GENERAL INFORMATION OPERATION
Introduction to the Operating and Service Manual l-1 Introduction to Section III ....................... 3-l
Volume I, Operating Manual ................... l-1 Operating Information ........................... 3-3
Volumes II through IV, Service Manual ......... l-1 HP-IB Table of Contents ........................ 3-5
Where to Find Instrument Specifications ........... l-l HP-IB Remote Operation ........................ 3-7
Where to Find Safety Considerations .............. l-2 HP-IB Address .................................. 3-8
Hewlett-Packard Interface Bus (HP-IB) Enables HP-IB Capabilities .............................. 3-9
Remote Control of the Instrument .............. 1-2 Data Input .................................... 3-11
Selecting the HP-IB Address ................... l-2 Data Output ................................... 3-15
HP-IB Capabilities ............................ l-2 Clear .......................................... 3-24
Remote, Local ................................. 3-25
An Explanation of the On-Site Service Strategy .... 1-3
Local Lockout, Set Local ........................ 3-26
Hardware Features ............................ l-3
Service Request ................................ 3-27
Built-In Test Features ......................... 1-3
Status Byte .................................. ..3-2 9
Firmware Features ............................ l-3
Additional HP-IB Information ................... 3-31
Quick Reference Manual Information .............. l-3 HP-IB Codes Summary ......................... 3-32
How the Operating Fundamentals Can Help You HP-IB Related Front-Panel Keys ................ 3-34
Learn to Operate the Instrument ............... l-3 HP-IB Related Terms .......................... 3-35
Accessories Supplied With the 8642A/B ............ l-4 RF Frequency
Options Available With the Instrument ............ l-4 RF Frequency Contents ...................... 3-37
Electrical Options ............................. l-4 RF Frequency ............................... 3-39
Mechanical Options ........................... l-4 Relative RF Frequency ....................... 3-45
Documentation Options ........................ l-5 RF Frequency Sweep ......................... 3-49
Equipment That Can Be Ordered for the Signal Amplitude
Generator .................................... l-5 Amplitude Contents .......................... 3-67
On-Site Service Kits .......................... l-5 Amplitude ................................... 3-69
Bench Service Kit ............................ l-5 Relative Amplitude ........................... 3-77
Signal Generator Test System, HP 89528 ....... l-5 Amplitude Sweep ............................ 3-83
50 Ohm to 75 Ohm Adapter ................... l-5 Modulation
Fiberglass Transit Case ........................ l-5 Modulation Contents ......................... 3-95
Rack-Slide Kit ............................... l-5 Modulation, AM ............................. 3-97
How to Use the Recommended Test Equipment Modulation, FM ............................ 3-105
Table ........................................ l- 5 Modulation, @JM ............................ 3-119
Instruments Covered By This Manual ............. l-6 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
Section II Save/Recall ................................ 3-157
INSTALLATION Sequence ................................... 3-161
Special Functions
Introduction 2-l Special Functions Contents .................. 3-165
Initial Inspection 2-l Special Functions ........................... 3-167
Preparation for Use 2-l Messages
Power Requirements 2-l Messages Contents .......................... 3-177
Power Cables 2-3 Operating Messages ......................... 3-179
HP-IB Address Selection 2-5 Appendixes
Interconnections 2-5 Appendix A: Glossary ....................... 3-199
Mating Connectors 2-5 Appendix B: Writing Messages to the Display 3-201
Operating Environment 2-5 Appendix C: Amplitude Units Conversion ...... 3-205
Rack Mounting 2-5 Appendix D: Display Annunciators and
Storage and Shipment 2-6 Abbreviations ............................ 3-207
Environment 2-6 Appendix E: Individual Instrument
Packaging 2-6 Identification ........................... 3-208.1
V
- -...--- --..-~ .
Contents Model 8642A/B
CONTENTS
SECTION 4 SECTION 5
PERFORMANCE TESTS ADJUSTMENTS
Introduction ................... 4-3 Adjustments . . . . . . . . . . . . . . . . . . . 5-2
Recommended Test Equipment ........ 4-3 Auto-Adjust Routines . . . . , . , , . . , , . . 5-2
Test Record ................... 4-3 Description . . . . . . . . . . . . . . . . . 5-2
Abbreviated Performance Testing ....... 4-4 How All Auto-Adjust Procedures Begin . 5-3
Level Accuracy and Flatness Tests ....... 4-6 Correction Data Special Functions. . . . . . . 5-5
Harmonics Tests ................. 4- 12 Identifying the Contents of A20 . . . . . 5-5
Pulse On/Off Ratio Test ............. 4- 14 Identifying the Contents of A3 . . . . . . 5-7
Residuals Tests .................. 4- I6 Interpreting Cal Data Stats . . . . . . . 5-8
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
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
HEWLETT
c!a PACKARD
.-
Model 8642A/B General Information
SECTION I
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
----L--------- 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.
Section II, Installation.
___- Installation covers initial inspection, preparation for use, and storage
and shipment.
Section III Operation.
--A 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 Ill.
Volumes II Through IV, Service Manual
Section IV Performance
A-------- Tests. Performance Tests enable you to check the performance of
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
----i------- VII Instrument Chaa Instrument changes provide backdating information, and
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 SHl (Complete capability)
Acceptor Handshake AH1 (Complete capability)
Talker T6 (No talk only mode)
Extended Talker TEO (No capability)
Listener L3 (Complete capability including Listen Only)
Extended Listener LEO (No capability)
Service Request SRI (Complete capability)
Remote Local RLl (Complete capability)
Parallel Poll PPO (No capability)
Device Clear DC1 (Complete capability)
Device Trigger DTO (No capability)
Controller Cl (System controller)
c2 (Send IFC and take charge)
c3 (Send REN)
C28 (Send interface messages)
Driver Electronics E2 (Three-state drivers)
l-2