C-SCOPE CS1220XD Instructions Manual page 12

to get maximum depth without problems associated with keeping the search head a constant
height above the ground surface.
When a target object has been located, note the location of the signal and take the search head to
one side of the object (at least two to three feet), but ensuring you do not raise the search head
from the ground. Select the Discriminate Mode (GD1 or GD2) by operating the
DISCRIMINATE push button and then releasing it.
Carefully rescan the target object, ensuring that the search head is kept level with the ground.
Effect of Discriminate control Position Set to Approximately 7 in GD1
The target can be analysed if the DISCRIMINATE rotary control had been set to a known level.
For instance, at the beginning of the search if the control was set to just reject small items of foil
then a rejected object will give a swing to the left on the meter and a decrease in audio response;
a worthwhile target will give a swing to the right on the meter and an increase in audio response.
The discriminate level may be fine tuned in each of the GD1 or GD2 modes by varying the
DISCRIMINATE level control, if unwanted objects are found. Always retune the detector if the
DISCRIMINATE level is altered.
The sensitivity level may also be varied but midway is recommended.
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