IN
THE
FIELD
TECHNIQUES
-
Pinpoint
Mode
6.If the detector emits sound with the coil over the ground in STEP 56, further adjustment of the ground balance KNOB is required as follows:
•Lift the search coil waist high
•Rotate the ground balance KNOB clockwise 1/16 of a turn
•Press PINPOINT
•Lower the search coil to the ground again
If the detector still emits a tone, repeat the procedure. You are searching for the ground balance knob positiion where the detector is just silent.
It is important to move the knob in small increments in order to find the first setting (moving clockwise) at which the detector remains silent. To insure yourself of the optimal adjustment, move the KNOB slightly counterclockwise from a
If the KNOB is
As your search takes you to different areas, verify the ground balance set- ting periodically using the above procedure. Within a geographical area, ground conditions can change. Varying elevation, proximity to water, and concentration of rock, sand or clay can all affect ground condition and sometimes require recalibrating with the ground balance knob.
•If the detector remains silent with the search coil 1/2 inch over the ground, no further adjustment is necessary; the detector is “GROUND BALANCED”
If the KNOB is
As your search takes you to different areas, verify the ground balance setting periodically using the above procedure. Within a geographical area, ground conditions can change. Varying elevations, proximity to water, and concentrations of rock, sand or clay can all affect ground condition and sometimes require recalibration with the ground balance knob.
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