Step 3 Test Piece - Minelab F3 Compact Operation Manual

STEP 3 Test Piece

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.
Maximum sensitivity is only available 30 seconds after the completion of the Start-
Up Tones. Do not test the detector with the Test Piece until 30 seconds after the
The Test Piece not only ensures that the performance of the detector is correct but
also gives the operator an example of how a minimum metal mine might sound when
deeply buried; for example Type 72A at 150 mm. (Sensitivity knob set to Position 4)
F3 Compact Operations Manual
NOTES
completion of the Start-Up.
Figure 18: Test Piece procedure
Operating Procedures | 25