1-2 Option 100 Fault Location and SRL
Introduction and Measurement Theory
Fault Location Measurement Theory
Fault Location Measurement Theory
This section describes basic fault location measurement theory, how the
analyzer converts frequency-domain data to distance-domain data, and
the relationship between start distance, stop distance and frequency
span.
Fault location measurements are designed to quickly and easily locate
faults, or discontinuities, in either 50 ohm or 75 ohm transmission lines.
Refer to Figure 1-1 for the following discussion.
The network analyzer has an RF signal source that produces an incident
signal that is used as a stimulus to locate and measure discontinuities in
your transmission line or cable. Each fault or discontinuity responds by
reflecting a portion of the incident signal and transmitting the remaining
signal.
The analyzer measures the frequency response of the cable and then
transforms the frequency data to distance data.
Figure 1-1 Fault Response to an RF Signal
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