F3 Operations Manual
26
c. 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. The orientation of the Test Piece during the
test is dependent on which Sensitivity Endcap is connected to
the detector.
NOTE
Maximum sensitivity is only available 30 seconds after the Threshold
Tone is heard. Do not test the detector with the Test Piece until 30
seconds after the Threshold Tone is heard.
• Black Sensitivity Endcap:
Hold the Test Piece above the middle of the coil with the
rounded end (containing metallic target) AWAY from the coil.
Move the Test Piece towards the centre of the coil until it lightly
touches the coil then move it sideways off the coil (the Test
Piece should be moved slowly and smoothly during this
procedure). A faint but clear response (change in Threshold
Tone volume and pitch) should be heard indicating the sensitivity
of the detector is correct.
P0647-A
Figure 18: Test Piece Procedure
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