The Radioman's Manual of RF Devices, Principles and Practices
Dealing with the RF aspects of radio communication, this is an indispensable book for anyone involved in land mobile radio, ham radio, marine radio or aviation radio.
TABLE OF CONTENTS The Radioman's Manual of RF Devices, Principles and Practices
Chapter 4: Test and Measurement Instruments
There are many pieces of test equipment that are used in test and measurement work in RF communications. Some of the more important ones deserve some special attention. This chapter covers the main instruments with which a technician or other interested persons should be familiar.
4.1 The Communications Analyzer
A communications analyzer (or service monitor in some circles) provides multiple test features, i.e., although some of these boxes are quite large and heavy, this is better than having to deal with several different pieces of equipment. There are many different pieces of test equipment used in the testing and repair of radio equipment. Dragging all of them around in the field would be too cumbersome. Many years ago, the manufacturers of test equipment finally integrated the most frequently used test equipment into a single box.
Photo 4 1 shows a communications analyzer. This instrument is quite versatile. Some of the features are:
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Spectrum analyzer
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Tracking generator
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SINAD meter
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Distortion analyzer
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Audio frequency meter
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RF frequency meter
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FM deviation meter
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AM modulation meter
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Digital oscilloscope
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RF Signal generator
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Audio signal generator
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Encoder
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Decoder
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RF power meter
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Audio power meter
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Special options
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Aural monitoring of the demodulated signal
Photo 4 1: The Hewlett-Packard Model HP8920B Communications Analyzer provides a multitude of features, including a spectrum analyzer and tracking generator.
These are just a few of the features of this instrument. Although the spectrum analyzer feature is not...
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