Triplett Fox 2 – PN: 3382 - Manual (Page 32)

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that at approximately the midpoint between the wires, the
tracer tone becomes very weak. This is the “null point”......
the place where the signal from one wire cancels the signal
from the other wire. Notice how this null differs from simple
loss of signal...... that is, there’s a very narrow zone where
the null occurs, and the signal gets stronger quite rapidly on
either side of the null. By waving the HOUND or HOUND 2
back and forth while slowly moving along the length of the
wire, the path of the null point can be followed between the
wires. These wires can be thought of as being on either side
of the open fault........ so by using this technique, it will be
possible to localize the area in which the fault occurs.
Figure 7
TRACER TONE
VISUAL CONT. TALK
OFF / POLARITY
AUDIBLE CONT.
WARBLE PULSE
CORDLESS
INTERFACE
OVERLOAD PROTECTED
UNLOCK BATTERY TEST
AC / RING
TRIPLETT
REV NORM
PU SH ON /O FF
– VO LU M E +
STRONG
SIGNAL
NULL
SIGNAL
FADES