R&S FSH
Distance-to-Fault Mode (R&S FSH-K41)
Vector Voltmeter (R&S FSH-K45)
Operating Manual 1173.6275.12 - 30
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Distance-to-Fault Mode (R&S FSH-K41)
Equipped with firmware option R&S FSH-K41 (order no. 1304.5612.02), you can
perform distance-to-fault measurements with your R&S FSH.
The distance-to-fault (DTF) mode provides functionality to measure cables for
mechanical defects in the system that cause a deterioration of the transmission quality.
The figure below shows some typical defects in a transmission system, including
defects on the cable.
The R&S FSH provides the necessary functionality to test the system equipment for its
characteristics and identify faults when it is being installed or maintained.
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on page 216
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Distance to Fault Measurements
on page 217
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on page 217
Test setup
A typical test setup to test cables and antennas includes the R&S FSH, an RF cable
(e.g. R&S FSH-Z320, order no. 1309.6600.00), a calibration standard (R&S FSH-Z28
or R&S FSH-Z29, order no. 1300.7804.03 and 1300.7504.03) and the cable under test.
Cable and antenna tests also require a tracking generator and VSWR bridge. The
tracking generator transmits a reference signal through the internal VSWR bridge to
the test port.
► Connect the RF cable to the RF input (port 1 or 2).
► Connect the test cable to the RF cable.
