Another method is to create a test field with “Air Targets”. You
create “Air Targets” by placing ferrous and non-ferrous metals
directly on top of the ground. The targets should be 6 to 10 feet
apart.
Being in Automatic Mode, stop over one of your targets. In few
seconds the detector will tune itself to this metal object. You’ll
then be aware of that through the ticking rate, which has already
become normal, as set by the manufacturer for the Automatic
Mode. Move aside. Pass over the same target, this time not
stopping your movement over it, and the detector will register it
again. So, don’t stop the search coil’s movement over a metal
target while operating your detector in Automatic Mode.
While testing the detector, please note the following:
- Try to keep a constant operational height of the search coil.
- The detector is very stable while in its Automatic Mode of
operation. SDP successfully compensates the effects of the
changes of the search coil’s operational height, and retunes
automatically to the changes in the ground conditions and to the
slowly changing external electromagnetic fields.
- The Discriminator is a typical motion detector. This means that
the search coil should be moved over and through the metal target,
if you stop your movement, then the detector will automatically
retune itself and you’ll loose the target.
-The loss of depth during the operation in the Automatic Mode
could be due to incorrect tuning of the detector.
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