Triple-Play Service Deployment

Chapter 5: Troubleshooting the Premises Wiring
Toning and Tracing
It is often necessary to trace to the far end of a data, voice, or coax cable run to
determine its location and to which CPE device it should be connected. Two
methods are commonly used. One is to use a tone generator to produce a low
voltage tone that can be traced through the cable jacket with a simple inductive
tone tracing probe. Some tone generators have multiple functions such as builtin
continuity tests and the ability to generate signals that will work through coax
splitters and filters so that a video system can be traced while it is active and
carrying video signals. Other tone generators have special power levels that allow
the technician to trace cables through walls and under flooring.
Tone Generator
Wiremap Example
Another, even faster, way to discover the far end of a cable run is to use remote
identifiers that emit a unique signature when a main unit is attached at the near
end. These identifiers are numbered and display this number on simple-to-use
testers.This method allows a single technician to wiremap, log, and label unknown
cable systems from one end.
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