Contents
Main
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HP 8920A & HP 8920B
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AUDIO SQUELCVOL-
RF Communications Test Set, Application Handbook
HP Part No. 08920-90126 Printed in U. S. A. April 1996 Rev C
SCREEN CONTROL
INSTRUMENT STATE
DATA FUNCTIONS
Notice
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Safety Considerations
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Safety Considerations for this Instrument
CERTIFICATION
WARRANTY
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DECLARATION OF CONFORMITY
In this Book
Set. This guide contains the following chapters and appendices.
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Contents
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Conventions Used In This Manual
Product Description
Features
The features currently available for the Test Set include:
V sensitivity (typically <1 V
Specifications
The Test Sets Features
Feature Contents
29
The Tests Sets Front-Panel Features
Screens
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These keys are used to access several instrument control and information screens.
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Data Keys
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DATA FUNCTIONS
CURSOR CONTROL
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Non-Bracketed Keys and Memory Card Slot
AUDIO IN LOHI
456
Slot for memory cards that are inserted to load software, or to record test results.
CURSOR CONTROL
123 0
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AUDIO OUTSQUELCHVOLUMEMIC/ACC ANT IN DUPLEX OUTRF IN/OUT
The Test Sets Rear-Panel Features
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Measurement Guideline 1
Connector Considerations
Measurement Guideline 2
Cabling and Adapter Considerations
Measurement Guideline 3
Special Test Considerations
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Measurement Guideline 4
Additional Measurement Considerations
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FM Off The Air Monitoring/Determining Unknown Transmitter Carrier Fre- quency
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FM Output Power, Deviation, and Frequency/Frequency Error Measurement
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FM Deviation and Symmetry Measurement
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FM Microphone Sensitivity and Modulation Limiting Measurement
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FM CTCSS Encoder Frequency and Deviation Measurement
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FM CDCSS Coding and Deviation Measurements
50 COXIAL
(RF OUT)
AF ANALYZER DECODER
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70
FM DTMF Encodes and Deviation Measurement
DECODER
50 COXIAL
(RF OUT)
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73
Tone Frequency
145.890058 0.587 0.10354
0.980 Tone Deviation
DTMF Tone Sequence
FM Audio Distortion Measurement
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FM Harmonics and Spurious Output Measurement
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FM Audio Output Power Measurement
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FM SINAD, Receiver Center Frequency, and Modulation Acceptan ce Band- width Measurement
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On the Test Set modulation acceptance bandwidth is displayed as AFGen1 To Deviation as shown.
Modulation Acceptance Bandwidth
FM Variation Of Sensitivity With Signal Frequency Measurement
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FM 20 dB Quieting Sensitivity Measurement
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FM Critical and Maximum Squelch Sensitivity Measurement
3Knob Keys
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FM CTCSS Sensitivity and Bandwidth Measurement
50 COXIAL
(AUDIO
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FM CDCSS Sensitivity Measurement
ENCODER
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FM Audio Frequency Response Measurement
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FM Audio Distortion Measurement
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FM Spurious Response Attenuation Measurement
50 COX- IAL
COMBINER
(AUDIO OUTPUT)
SHEILDED ADUIO
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119
AM Off The Air Monitoring/Determining Unknown Transmitter Carrier Fre- quency
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AM Output Power, Deviation, and Frequency/Frequency Error Measurement
50 COXIAL
SHEILDED ADUIO CABLE
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AM Microphone Sensitivity and Modulation Limiting Measurement
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127
28.310176 18.3 0.99852
31.2
Microphone Sensitivity
AM Audio Distortion Measurement
This procedure is used to measure an AM Transmitters audio frequency harmonic distortion level.
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AM Harmonics and Spurious Output Measurement
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AM Envelope Display Measurement
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AM Audio Output Power Measurement
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AM Sensitivity Measurement
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AM AGC Measurement
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AM Squelch Sensitivity Measurement
3Knob Keys
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149
AM Audio Frequency Response Measurement
ANTENNA (RF OUT)
50 COXIAL
(AUDIO
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152
AM Audio Distortion Measurement
ANTENNA (RF OUT)
50 COXIAL
(AUDIO
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AM Spurious Response Attenuation Measurement
50 COX- IAL
COMBINER
(AUDIO OUTPUT)
SHEILDED ADUIO
biner (HP 11636A).
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SSB Frequency or Frequency Error Measurement
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SSB Rated Output Power/Carrier Suppression Measurement
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SSB Harmonics and Spurious Output Measurement
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SSB Audio Output Power and Distortion Measurement
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SSB Sensitivity Measurement
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SSB Squelch Sensitivity Measurement
50 COXIAL
(AUDIO
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List of Measurements
Using the Spectrum Analyzer
191
Measuring Transmitter High/Low Power Signals
ANTENNA (RF OUTPUT)
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Field Strength Measurements
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Analyzing External Transmitter Inter-modulation Distortion
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Using the Tracking Generator
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Basic Measurements with the Tracking Generator
DEVICE UNDER TEST
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Antenna Return Loss (VSWR) Measurement & Tuning
Source
Reflected
Return Loss Bridge or Directional Coupler
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212
Load
Return Loss Bridge or Directional Coupler
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1/4 Wave Coaxial Filter Tuning (Swept)
TEE
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Cable Fault Locations
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222
Passive Cavity Insertion and Return Loss Measu rement
Adapter
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Repeater System Effective Sensitivity Measuremen t
1
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Using the Oscilloscope
Oscilloscope Overview
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The Delta marker function is performed by:
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Preparing the Test Set for DC Operation
Connection/Configuration for DC Power
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Preparing the Test Set for Operation
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Signal Generator Specifications
RF Frequency
Output
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Spectral Purity
SSB Phase Noise:
FM
AM
TDMA Signal Generator
(HP 8920D or 8920A with Option 050 and HP 83201A)
Audio Source Specifications
(These specifications apply to both internal sources)
Frequency
Output Level
RF Analyzer Specifications
RF Power Measurement
RF Frequency Measurement
FM Measurement
AM Measurement
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TDMA Analyzer
(HP 8920D or 8920A with Option 050 and HP 83201A)
AF Analyzer Specifications
Frequency Measurement
AC Voltage Measurement
DC Voltage Measurement
Distortion Measurement
SINAD Measurement
Audio Filters
Audio Detectors: RMS, RMS*SQRT2, Pk+, Pk Pkmax, Pkmaxhold
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Spectrum Analyzer Specifications (Option 102)
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Adjacent Channel Power
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Signaling (Option 004)
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Remote Programming (Option 103)
Reference Oscillator Specifications
TCXO (Standard)
OCXO (Option 001)
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General Specifications
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Output
Spectral Purity
FM
AM
TDMA Signal Generator
HP 8920B Option 500 (includes HP 83201B)
Audio Source Specifications
(These specifications apply to both internal sources)
Frequency
Output Level
RF Analyzer Specifications
RF Power Measurement1
RF Frequency Measurement
FM Measurement
AM Measurement
SSB Measurement
TDMA Analyzer
HP 8920B Option 500 (includes HP 83201B)
AF Analyzer Specifications
Frequency Measurement
AC Voltage Measurement
DC Voltage Measurement
Distortion Measurement
SINAD Measurement
Audio Filters
Oscilloscope Specifications
Spectrum Analyzer Specifications (Option 102)
Tracking Generator
Adjacent Channel Power
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Signaling (Option 004)
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Remote Programming
Memory Card Specifications
Reference Oscillator Specifications
TCXO (Standard)
OCXO (Option 001)
General Specifications
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Glossary
