B-12 PN: 10580-00343 Rev. H S820E UG
B-5 Standard Line Sweep Measurements Measurement Review
Distance To Fault – Load Sweep
A measurement is made with the antenna disconnected. The antenna is
replaced with a 50 Ω precision load at the end of the transmission line. This
measurement allows analysis of the various components of the transmission
feed line system in the DTF mode.
Cable Loss – Cable Loss Sweep
A Cable Loss Sweep is a measurement made when a short is connected at the
end of the transmission line. This condition allows analysis of the signal loss
through the transmission line. This measurement identifies problems in the
system. High insertion loss in the feed line or jumpers can contribute to poor
system performance and loss of coverage.
This whole process of measurements and of testing the transmission line
system is called Line Sweeping.
Advanced measurements are described in Section 3-6 “Advanced
Measurements” on page 3-23. They including Transmission (2-Port),
Transmission (External Sensor), Smith Chart, and 1-Port Phase.
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