TDI
Pr o
Owner ’s Gui de 11
Never assume that the higher the Gain is set, the deeper the detector
will go. Although environmental noise EMI (electromagnetic interference)
can affect the level of Gain that can be used, the ground mineralization
has the greatest infl uence on how high the Gain can be set for optimum
performance.
By attempting to use more Gain than the ground minerals will allow, the
detector circuit can go into overload and in that condition will not be able
to perform properly. In that situation, reducing Gain will allow the detector
to effectively balance the ground and operate with increased performance
and improved penetration.
When operating the Pulsescan TDI Pro with a Threshold that is as smooth
as possible, the clarity of a true target signal will not be confused or hid-
den by false signals, chatter, or blanking of the Threshold, often the result
of too high a Gain setting. Keeping the detector ground balanced is very
important, however, the best way to maintain smooth stable operation is to
use the appropriate amount of Gain for the area conditions.
Inability to maintain a reasonable Threshold and/or Ground Balance, er-
ratic operation, false signals, or noisy, are all signs the Gain is set to high
for the area.
Vol ume -
What i t does
The Volume control increases or decreases the loudness of the audio
infl uencing both target responses and the Threshold level.
