3-20 PN: 10580-00343 Rev. H S820E UG
3-5 Distance-To-Fault (DTF) Cable and Antenna Measurements
Example 2 – DTF Transmission Line Test
The Distance-To-Fault transmission line test verifies the performance of the
transmission line assembly and its components and identifies the fault
locations in the transmission line system. This test determines the return
loss value of each connector pair, cable component and cable to identify the
problem location. This test can be performed in the DTF-Return Loss or
DTF-VSWR mode. Typically, for field applications, the DTF-Return Loss
mode is used. Figure 3-10 on page 3-20 shows the failure with the antenna
still attached.
To perform this test, disconnect the antenna and connect the load at the end
of the transmission line (Figure 3-11 on page 3-21).
Figure 3-10. DTF Return Loss Measurement (Antenna at 15 m)
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