Triplett Fox & Hound 3 – PN: 3397 - Manual (Page 26)

26
The FOX’s tracer tone can be shorted out by any loads on
the target wire. All loads must be disconnected from the tar-
get wire.
Crosstalk may occur in multiwire cables, in wires bundled
together into a harness, or in wires that run parallel to each
other for long distances . . . making identification of the tar-
get pair difficult.
Crosstalk is the bleeding of the tracer tone from the target
wire onto adjacent wires. A tracer tone applied to a target
wire or wires may crosstalk onto adjacent wires. Some wires/
cables are constructed to reduce the crosstalk, but other wire/
cables crosstalk readily. So much crosstalk can occur that
the tracer tone on the adjacent wires can be almost as large
as the original tone on the target wire. This can make it dif-
ficult to identify the target wire with the HOUND 3. A method
of trying to determine if the tone being received is the origi-
nal tone, or is crosstalk, is to short out the wires with the
tone at the location where the HOUND 3 is being used. The
FOX supports the Remote Tone Kill method. Shorting the
output of the FOX, anywhere along the length of the target
wire, kills the tone everywhere along the wire. If shorting
the wires only reduces the tone’s level, but does not com-
pletely kill it, then the shorted wires have crosstalk on them,
and are not the target wires. If shorting the wires completely
kills the tone, then its likely that the wires are the target wires.
Unfortunately, this test is not 100% effective.