HP8648A
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About this Manual
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HP References in this Manual
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Hewlett-Packard's former test and measurement, semiconductor products and
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the company name prefix: where a product number/name was HP XXXX the
current name/number is now Agilent XXXX. For example, model number
HP8648A is now model number Agilent 8648A.
HP 8920A & HP 8920B
RF Communications Test Set,
Application Handbook
POWE
OF O
!
MAX POWER
SCREEN CONT ROL
CONFIHELPMSSG HOLD PRINT
DUPLETXRX PREV TESTS
USER
DATA FUNCTIONS
k1’
REF
METER
AVG
INCR
INCR
INCR
LO HI
CURSOR CON-
PUSH TO
CANCE
!
ANT INDUPLEX OUTRF IN /OUT
MAX POWER 200
ASSIG
RELEA
SHIFT
k1
k2’
k2
k3’
k3
k4
k5
MIC/
HP Part No. 08920-90126
Printed in U. S. A.
April 1996
Rev C
INSTRUMENT STATE
ADRS
SAVE
LOCAL
RECAL
DATA
789
456
123
+
0
YES
NO
ON/OFF
AUDIO SQUELCVOL-
MAX
!
_
MEAS
ENTER
dB
GHz
%
MHz
s
kHz
Hzms% Ωppm
AUDIO IN
!
PRESE
MEMO
LOHI
MAX
1
Copyright © Hewlett-Packard Company 1994
Notice Information containe d in this doc ument is subj ect t o chang e without no-
tice.
All Rights Reserved. Reproduction, adaptation, or translation without
prior written permission is prohibited, e xcept as allowe d under t he copyright laws.
This material may be reproduced by or for the U.S. Government pursuant to the Copyright License under the clause at DFARS 52.227-7013
(APR 1988).
Hewlett-Packard Company
Learning Products Department
24001 E. Mission
Liberty Lake, WA 99019-9599
U.S.A.
2
Manufacturer’s
Declaration
This statement is provided to comply with the requirements of
the German Sound Emission Directive, from 18 January 1991.
This product has a sound pressure emiss ion (at the operator
position) < 70 dB(A).
• Sound Pressure Lp < 70 dB(A).
• At Operator Position.
• Normal Operation.
• According to ISO 7779:198 8/EN 27779:1991 (Type Test).
Herstellerbeschei
nigung
Diese Information s teht im Zusammenh ang mit den Anforderunge n der
Maschinenlärminform ationsverordnung vom 18 Januar 1991.
• Schalldruckpegel Lp < 70 dB(A).
• Am Arbeitsplatz.
• Normaler Betrieb.
• Nach ISO 7779:1988/EN 27779:1 991 (Typprüfung).
3
Safety
Considerations
GENERAL
This product and related documentation must be reviewed for familiar-
ization with safety marking s and inst ructions before operation.
This product is a Safety Class I instrument (provided with a protective
earth terminal).
SAFETY EARTH GROUND
A unterruptible safety earth ground must be provided from the main
power source to the product input wiring te r minals, power cord, or s upplied power cord set.
CHASSIS GROUND TERMINAL
To prevent a potent ial shock h azard, always c onnect the rear-panel chas-
sis ground terminal to earth g round when opera ting thi s instrument from
a dc power source.
SAFETY SYMBOLS
Indicates inst rument damage can occur if indicated operating limits are
!
exceeded.
Indicates hazardous voltages.
Indicates earth (ground) terminal
WARNING A WARNING note 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 injury. Do not proceed
beyond a WARNING sign until the indicated conditions are fully
understood and met.
4
CAUTION A CAUTION note denotes a hazard. It calls attentionto an operation
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 an CAUTION note until the
indicated conditions are fully unders tood and met.
Safety Considerations for this Instrument
WARNING Any interruption of the pr otective (grounding ) c onductor (i nside
or outside the instrument) or disconnection of the protective
earth terminal will cause a potential shock hazard that could
result in personal injury. (Grounding one connector of a two
conductor outlet is not sufficient protection.)
Whenever it likely that the protection has been impaired, the
instrument must be made inoperative and be s ecured against any
unintended operation.
If this i nstru me nt is to be en ergi zed via an a uto tran sfor mer (for
voltage reduction), make sure the common terminal is connected
to the earth termi nal of the pow er source.
Servicing instructions are for 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 performed with power
suppli ed to the in strumen t while pro tective co vers are re moved.
Energy available at many points may, if contacted, result in
personal injury.
Capa cito rs in sid e th e ins tru men t ma y st ill be cha rge d ev en if the
instrument has been disconnected from its source of supply.
For Continued protection against fire hazard, replace the line
fuse(s) only with 250 V fuse(s) or the same current rating and
type (for example, normal blow or time delay). Do not use
repaired fuses or short circuited fuseholders.
5
CERTIFICATION Hewlett-Packard Company cer tifies that this product met its published
specifications at the ti me of shipment from the factory. Hewlett-Packard
further certifies that its c alibration measurements are traceabl e to the
United States Natio nal Inst itut e of St andards and Te chnology, t o th e ex-
tent allowed by the Instit ute’s calibrati on facility, and to the calibration
facilities of other International Standards Organization members
WARRANTY This Hewlett-Packard instrument product in warranted against defects
in material and workmanship for a per iod of one year from date of shi pment. During the warranty pe riod, Hewlett-P ackard Company will at its
option, either repair or repla ce products which prove to be defective.
For warranty servi ce or repair, thi s product m ust be returne d to a servic e
facility designated by HP. Buyer shall prepay shipping charges to HP
and HP shall pay shipping charges, duties , and taxes fo r products returned to HP from another country.
HP warrants that its software and Firmwar e designa ted by HP for use
with an instrument will execute its programming instructions when
properly install ed on that ins tr ument. HP does not warran t that the ope ration of the instrument, or software, or firmware will be uninterrupted
or error free.
6
LIMITATION OF
WARRANTY
The foregoing warranty shall not a pply to defects resulting from improper or inade quate maintenance by B uyer, Buyer-supplie d software or
interfacing, unauthorized modification or misuse, operation outside of
the environmental speci fications for the product, or improper site pr eparation or maintenance.
NO OTHER WARRANTY IS EXPRESSED OR IMPLIED. HP SPECIFICALLY DISCLAIMS THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTIDCULAR
PURPO SE.
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 BASE ON CONTRACT, TORT, OR
ANY OTHER LEGAL THEORY.
ASSISTANCE Product maintenance ag reements and ot her custome r assis tance agree-
ments are available for Hewlett- Packard produc ts. For any assi stance ,
contact your nearest Hewlett-Packard Sales and Service Office.
7
DECL AR AT ION OF CONFORMITY
Manufa ctu rer’ s Name: Hewlett-P ack ar d Com pan y
Manufa ctu rer’ s Address: Spokane Division
24001 E. Mission Ave.
Liberty Lake, WA 99019-9599
Declares that the product(s):
Product Name: RF Communications Test Set
Model Number(s): HP 8920A, 8920B
Product Options: All
Conforms to the following product specifications.
Safety: HD 401/IEC 348
EMC: EN 55011 (1991) /CISPR 11 (1990): ‘Group 1,
Class A
EMC: EN 50082-1 (1992)/IEC 801-2 (1991): 4 kV CD, 8
kv AD
/IEC 801-3 (1991): 3 V/m
/IEC 801-4 (1991): 1k V Power
Lines
0.5 kV Sig-
nal Lines
Supplementary Information:
The product herewith compli es wit h the requirements of the Low Volt-
age Directive 73/23/EEC and EMC Directive 89/336/EEC.
Spokane, Washington
Date Vince Roland, SKD Quality Man-
ager
European Contact: Your local Hewlett-Packard Sales and Service Office or
Hewlett-Packard GmbH. Dept. ZQ/Standards Europe, Herrenberge r St arBe
130, D-7030 Bobling en (Fax: +49-7031-14-3143).
8
In this Book This book is a guide for performing common radio tests using the Test
Set. This guide contains the foll owing chapters and appendices.
Chapter 1, Getting Started With The Test Set
This chapter contains a description of the manual contents, a general
description of the Test Set, and a general description of the front and rear
panel controls, indicators, and connectors.
Chapter 2, Measurement Considerations
This chapter contains a description of guidelines that must be adh ere to
when performing the measurements with the Test Set.
Chapter 3, Testing FM Radios
This chapter contains the information require d to use the Test Set to
perform FM Tr ansmitter and Receiver me asurements.
Chapter 4, Testing AM Radios
This chapter contains the information require d to use the Test Set to
perform AM Transmitter and Receiver measurements.
Chapter 5, Testing SSB Radio s
This chapter contains the information require d to use the Test Set to
perform SSB Transmitter and Receiver measurements.
Chapter 6, Spectrum Analyzer Measurements
This chapter contai ns the informati on about system measure ments using the
Spectrum Analyzer and Tracking Generator.
Chapter 7, Spectrum Analyzer Measurements
This chapter contai ns the informati on about system measure ments using the
Spectrum Analyzer and Tracking Generator.
Chapter 7, Oscilloscope Measurements
This chapter contai ns the informati on about system measure ments using the
Oscilloscope.
9
Chapter 8, Configuring For Measure ments
This chapter contains the information required to insta ll the Test Set in
preparation of performing measurements. Information provided includes
instructions for power and printer connection, and initial power-up and
configuration.
Chapter 9, References
This chapter li st s any manuals, applicati on notes, specificati ons, and
standards reference d in this gui de.
Chapter 10, HP 8920A Specifications
This chapter provides abbre viated specifications for the HP 8920A.
Chapter 11, HP 8920B Specifications
This chapter provides abbre viated specifications for the HP 8920B.
Glossary
This i nformatio n lists the acron yms, abb reviat ions, and common te rms used
in this guide.
10
Contents
1 Getting Started With The Test Set
Conventions Used In This Manual 24
Product Description 25
The Test Set’s Features 28
11
Contents
2 Measurements Considerations
Measurement Guideline 1 44
Measurement Guideline 2 45
Measurement Guideline 3 46
Measurement Guideline 4 48
12
Contents
3 Testing FM Radios
Introduction 50
List of Tests 51
FM Transmitters 52
FM Receiv ers 79
13
Contents
4 Testing A M Radios
Introduction 116
List of Tests 117
AM Transmitters 118
AM Receivers 136
14
Contents
5 Testing SSB Radios
Introduction 160
List of Tests 161
SSB Transm itt ers 162
SSB Receiv er s 173
15
Contents
6 Spectrum Analyzer Measurements
Introduction 188
List of Measurements 189
Using the Spectrum Analyzer 190
Using the Tracking Generator 205
16
Contents
7 Oscilloscope Measure ments
Introduction 234
Using the Oscilloscope 235
17
Contents
8 Configu ring fo r Mea s ur em en ts
Preparing the Test Set for DC Operation 244
18
Contents
9 References
Manuals 250
Application Note 251
Specifications and Standards 252
19
Contents
10 HP 8920A Specifications
Signal Generator Specifications 255
Audio Source Specifications 261
RF Analy zer Specifications 262
AF Analyzer Specifications 268
Oscilloscope Specific ations 271
Spectrum Analyzer Specific ations (Option 102) 272
Signaling (Option 004) 276
20
DC Current Meter (Option 103) 277
Remote Programming (Option 103) 278
Reference Oscillator Spec ifications 279
Save/Recall Registers 280
General Sp ec if ic ation s 281
Contents
11 HP 8920B Specifications
Signal Generator Specific a tions 285
Audio Source Specifications 291
RF Analyzer Specifications 292
AF Analyzer Specifications 297
Oscilloscope Specifications 300
Spectrum Analyzer Specifications (Option 102) 301
Signaling (Option 004) 304
DC Current Meter 305
Remote Programming 306
Memory Card Specifications 307
Reference Oscillator Specifications 308
General Specificat ions 309
21
Contents
22
1
Getting Started With The Test Set
This chapter provides the user with a gener al introduction to the
instrument. Information provided includes a general description of the
Test Set, and a general description of the front and rear panel features.
23
Conventions Used In This Manual
Conventions Used In This Manual
The Test Set keys, screen titles, fields, and shif ted functions are shown
using the following conventions: (Refer to the RX TE ST screen and
the instrument front panel.)
• Screen titles are s hown in bold upper-case type −RX TEST
• Field names and some measurements (such as AC Level) are indicate d in
lowercase bold type −RF Gen Freq
• The contents of a field, and some measur ements (such as SINAD) are
show n in italics – − 100.000000 or underlined – RF In
• Key caps are shown in all capital letters − PRESET
• The SHIFT key i s pre ssed and rele ased t o a ccess the bl ue-la beled functi ons
printed above the keys. When a SHIFTed function is call ed-out in this manual, the use of th e SHIFT key is assumed and is not usually indicated. The
function to be accessed is shown in boxed italics text upper-case letters:
MSSG.
24
Product Description
The Test Set is a single instrument that combines the features of 22
individual radio tes t instr uments. The Test Set is designed to meet the
communication test needs of both service and manufacturing
environments, and the capabil ity to test land mobile radios, cellular
phones, and various other communications systems.
Test and troubleshooti ng time is decr eased by simplifying standard
measurement tasks and providi ng the required measurement capability
in a single instrument. Transmitters and receivers are character ized
with single-k ey RX, TX and duplex te sts. Each of these tests displays a
specialized screen that provides access to the necessary controls and
measurement results. Measured results may be displayed as digital
readouts and/or bar graphs. All settings and measurements are easily
accessed and changed using the front-panel knob and keys. If desired,
all settings can be saved in nonvolatile save/recall registers for future
access.
Product Description
The various ports on the Test Set allow the receiver/transmitter being
tested to be quickly connected. A receiver with 2
(typically <1 µV) is available through the ANT IN port, for off-the-air
monitoring of low-level signals. Transmitter measurements of highpower signals of up to 100 W intermittentl y (for 10 seconds) or 60 W
continuous can be performed with out the use of external attenuators.
µV sensitivity
25
Product Description
Features
The features currently available for the Test Set include:
• Synthesized AM/FM signal generat or to 1000 MHz
• Function generator (HP 8920A option)
• AM/FM modulation analyzer
• Duplex offset generator
• Signalling encoder and decoder (HP 8920A option)
• SSB demodulator
• RF power meter
• RF frequency counter/frequency error meter
• Audio frequency counter
• AF power meter
• AC/DC voltmeter
• DC current meter (HP 8920A option)
• SINAD meter
• Distortion meter
• Two variable audio sources
• Digital oscilloscope
• Spectrum analyzer and tracking generator (optional)
V sensitivi ty (typically <1 µV)
•2 µ
• Cellular- phone test capability (op tional)
• Built-in I-BASIC controller
• HP-IB/RS-232 interface buses for remote programming (optional)
• R ad io te s t so f tw are (optional)
• Radio interface card (HP 8920A option)
• Adjacent channel power
26
Specifications
Product Description
Abbreviated specifications for the Test Set are provided in "HP 8920A
Specifications" on page 253
and "HP 8920B Specifi cations" on page 283.
See the HP 8920A /B RF Communications Test Set Assembly Level
Repair Guide for a complete list of specifi cations.
27
The Test Set’s Features
The Test Set’s Features
This section contains a brief descr iption of the Test Set’s keys,
connectors, controls, and screens. Additional operati ng information for
all keys, connectors, controls, and screens can be found in the Test
Set’s user guide.
Feature Contents
"The Test’s Sets Front-Panel Fea t u res" on page 29.
• "Screens" on page 29.
• "Data Function Keys" on page 33.
• "Knobs" on page 34.
• "Scr ee n C ontrol Keys" on p a ge 35 .
• "Instrum ent State Keys" on page 36.
• "Data Keys" on page 37.
• "Connectors" on page 38.
• "Non-Bracketed Keys and Memory Card Slot" on page 39.
28
"The Test Set’s Rear-Panel Features" on page 40
• "Connectors" on page 40.
• "Key and Fuse Holders" on page 41.
The Test’s Sets Front-Panel Features
The Test Set’s Features
POWER
OFF ON
MAX POWER 60 W
!
CONTINUOUS
!
ANT INDUPLEX OUTRF IN/OUT
MAX POWER 200 mW
SCREEN CONTRO L
CONFIGHELPMSSG HOLD PRINT
DUPLEXTXRX PREV TESTS
DATA FUNCTIONS
USER DATA
REF SET
METER
INCR
INCR
: 10
SET
CURSOR CONTROL
PUSH TO SELECT
AVG
INCR X10
k1’
k1
k2’
k2
k3’
k3
ASSIGN
k4
RELEASE
k5
SHIFT
LO LIMIT HI LIMIT
CANCEL
INSTRUMENT STAT E
ADRS
SAVE
LOCAL
RECALL
789
456
123
+
0
ON/OFF
YES
Ω
NO
%
ppm
dBµV
W
AUDIO O UTSQUELCHVOLUMEMIC/ACC
MAX
!
12 v Pk
_
MEAS
RESET
ENTER
dB
GHz
dBm
%
MHz
V
s
kHz
mV
ms
Hz
µV
AUDIO IN
MAX
!
42 v Pk
PRESET
MEMORY
CARD
LOHI
Screens
The CRT displays the various test scree ns, measurement results,
waveforms, and messages. The a brief description is provided in the
following:
• “Screens that are Standard to the Test Set” on page 30.
• “Screens that Require an Option” on page 31.
• “Screens that Require an Optional Instr u ment” on page 31.
29
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