Measuring Distance to Fault

---

A signal is transmitted from the RF Out/SWR port of the test set to the cable-under-test. The signals reflected from faults in the cable are received by the test set.
In performing this measurement, the test set uses frequency domain reflectometry. The changing interference of the transmitted and reflected signals contains information about the distance to one or more faults. This information can be used to find the physical distance to the faults. The distance displayed on the test set is the physical distance to the probable faults, corrected for the cable loss and velocity propagation factor of the cable.