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1-Port Cable Loss Testing
Introduction
This chapter provides instructions on how to perform 1 Port Cable Loss measurements that are used to
quantify signal loss in a cable or other device without connecting both ends of the cable or device to the
instrument. Topics discussed in this chapter are as follows:
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Introducing 1-port cable loss measurements
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Preparing for a measurement
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Making a measurement
Introducing 1-port cable loss measurements
The 1 Port Cable Loss measurement checks the signal attenuation level of the cable. The frequency band
to measure the characteristics of a cable must be calibrated before performing the cable loss
measurement. This measurement can be especially useful in measuring the loss of feed line connected to
the antenna. By placing a short at the end of the cable or leaving it open, the signal is reflected back and
the energy lost in the cable can be computed. Cables with larger diameter generally have less insertion
loss and better power handling capabilities than cables with smaller diameter.
1 port cable loss measurement screen
Содержание CAA06M
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Страница 71: ...Smith Chart Testing 62 ...
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