Triplett Hound 3 – PN: 3392 - Manual (Page 17)

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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 3. The FOX or FOX 2’s red clip
is connect to one wire and the green clip is connected to the
other wire. This method is often used on telephone, inter-
com, or alarm wires. The floating method tends to cancel
out some of the tracer tone, so a 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 con-
nected to the FOX or FOX 2’s green clip or which wire is
connected to the red clip.
If using a FOX, identify the target wire using the “Remote
Tone Kill” technique. When the wire or wires (pair) that the
FOX is connected to, are shorted out, locally or remotely,
the TONE signal from the FOX is “killed”.
In situations where it is difficult to identify the target wire,
because of crosstalk from other wires, the target wires can
be identified by shorting out the wire pair with the TONE on
it. If you have found the correct wires, the TONE will be com-
pletely killed. If the TONE is still heard, but reduced some-
what in level, you have not found the target wires. This
method is not foolproof, and experimentation, common
sense, and experience must be used to apply it properly.
However, in many instances, it will provide trace verifica-
tion. A caution . . . if you are at a location where the only
wires are not the target wires, but they have a signal on them
due to crosstalk . . . it may appear that you have killed the