Ceyear 4992A, User Manual

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Chapter I Overview
3
4 Typical application
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Field installation, commissioning and maintenance of radio device
4992A Radio Test Set is highly integrated with various test instruments. On the premise that
various functions are realized, the maximum size is 295mm (width)×195mm (height)×70mm
(depth), and the weight is less than 2.5kg. This instrument is equipped with the high-capacity
rechargeable battery, which can work in a long time after charging. Therefore, this instrument is
suitable for field installation, testing and maintenance of radio transmitters/receivers. As the
multimeter in the RF measurement field, this instrument will become an essential tool for radio
engineers.
■ Performance test of batch production of radios and intercoms
With the popularization of radio communication, military and civilian radios and
communication tools will be applied widely. Their development/batch production require various
test devices, such as the signal generator, spectrum analyzer, power meter, frequency meter,
oscilloscope, audio meter, etc. A complete set of radio/intercom generally includes the transmitter
and receiver. To test all performance indicators, various instruments should be switched frequently,
which will result in the consumption of a lot of labor, materials and time. 4992A Radio Test Set
with integration of various instruments is suitable for full performance tests of various
on-board/commercial radios, wireless intercoms, etc. The test process will be simplified, the costs
will be reduced, and the work efficiency will be improved. This instrument is equipped with the
built-in diagnosis module. The acceptable range can be set for specific test objects. Finally, test
data will be outputted in different colors according to the built-in limits, to remind the user of
current test results. This function has strong advantages in large-scale production, conventional
performance maintenance, etc.
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Antenna/feeder performance maintenance
From the perspective of conventional radio repair, data show that many faults are actually
caused by feeder cables and antenna rather than the radio itself. The high return loss arising from
cables, connectors or antennas can be expressed as the large VSWR value. Therefore, the test of
the standing wave ratio of the feeder cable and antenna is necessary, as the fault can be isolated on
the feeder, connector or antenna. With the built-in standing wave ratio test module, 4992A Radio
Test Set can be applied to test the standing wave performance of cable ports. Moreover, the fault
point can be positioned in the test according to the actual transmission rate of the tested cable. In
this case, the return of radios for repair is not required, thus reducing the downtime of the radio
system and improving the maintenance efficiency.