Step 3 Test Piece - Minelab F3 compact Operation Manual

F3 COMPACT Version 2 Operations Manual
and repeat this procedure. If there is metal in the ground under the
coil whilst Ground Balancing, the detector will not Ground Balance
correctly. Move the detector and repeat the Ground Balance over
After the Ground Balance procedure is completed the detector will
automatically cancel interference from the ground under the coil. If
ground conditions change (changing mineralisation in the ground)
For operator training purposes, once Ground Balance has been
successfully completed, the detector can be made to 'forget' the
Ground Balance conditions by pressing and holding the green
Ground Balance button for five seconds. This will allow the operator
to practise the Ground Balance procedures against the same

STEP 3 Test Piece

4.2.3
Ensure the operator's hands and arms are free of metallic objects
(watches, rings etc), and that no other metallic objects are near the
coil.
a. Ensure Sensitivity is set to Position 4 (default).
b. Remove the Test Piece from its stowed position on the
Armrest by extending the Armrest and rotating the Test Piece
clockwise. Hold the Test Piece above the middle of the coil
with the end containing metal AWAY from the coil.
c. Move the Test Piece towards the centre of the coil until it
lightly touches the surface then move it sideways off the coil
(the Test Piece should be moved slowly and smoothly during
this procedure).
A faint but clear response (rise in volume) should be heard
indicating the sensitivity of the detector is correct.
With the LED display enabled, the Test Piece Procedure will
result in the illumination of at least one additional LED.
If the Test Piece cannot be heard, conduct an Audio Reset and
recheck. If the Test Piece fails to be detected the detector must
be considered faulty and must not be used.
ground that is free of metallic objects.
this procedure may need to be repeated.
mineralised ground.
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