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16
USER MANUAL
Figure 5
– The level of the responding signal depending
on the Tracer displacement from the utility axis
The «sharp peak» method provides high accuracy of the utility
tracing since the signal peak near the line axis is on the abrupt area
of the graph (see Figure 5, left display). When the antenna is
arranged right over the axis of the utility, the responding signal will be
on its peak. The signal gain in this point shall be set so tha
t ¾ of the
scale were lighted; the sound volume shall be adjusted at the level,
comfortable for the operator. The «
» button may be used
to adjust the optimum gain of each specific signal automatically.
The indicator barograph will grow down when the Tracer moves
away from the axis. Further displacement of the Tracer will result in
disappearing of the linear scale. The «
--.-
» icon will appear instead of
the signal level indication.
If the signal is weak or the depth of utility is sufficient, the indication
on the Peak scale may be unstable or missing. In this case you shall
use the «broad peak» method which demonstrates higher sensibility
to weak signals.
The indicator scale readings do not depend directly on the location of
the Tracer
towards the utility at the «broad peak» method since the
signal peak is within the broadarea of the graph (see Figure 5, right
display). However, this method provides maximum sensitivity of the
Tracer.
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