Triplett Fox 2 & Hound 3 – PN: 3399 - Manual (Page 34)

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LED to flash, helping differentiate the actual tone from 60Hz
Noise (which causes the LED to light continuously).
8.1.9: Wire Tracing, Identification, and Open Faults:
The uses of the FOX 2 Tracer Tone mode can usually be di-
vided into three categories . . . tracing, identification, and
locating open faults.
8.1.9.1: Wire Tracing Methods:
There are two basic wire tracing methods . . . “floating” and
“grounded”.
In the floating method (also called Line to Line), the tracer
tone is applied to two wires (a pair) in the cable or wire har-
ness to be tested. See Figure 5. The FOX 2’s red clip is con-
nect to one wire and the green clip is connected to the other
wire. This method is often used on telephone, intercom, or
alarm wires. The floating method tends to cancel out some
of the tracer tone, so the HOUND 3 usually works best when
the user has access to the wires, and can place the HOUND
3 right against the wires. This method identifies the wires as
a pair. It will not identify which wire is connected to the FOX
2’s green clip or which wire is connected to the red clip.
For positive identification of the pair, momentarily short the
pair to active the True Trace feature. If this is the target pair,
the cadence of the tracer tone will change.