F3 COMPACT Service Manual
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11
Note
Maximum sensitivity is only available 30 seconds after the threshold tone is heard. Do not test
the F3 COMPACT with the test piece until 30 seconds after the threshold tone is heard.
•
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.
Figure 8: Test Piece Procedure
•
Confirm a faint but clear response (change in threshold tone and pitch) is heard.
•
If the test piece is not heard conduct an audio reset and repeat the test.
Note
The test piece test can only be conducted with the sensitivity control in the green position
(Sensitivity No 4). When the sensitivity control is not set to the green position it is the
responsibility of the user to provide an appropriate target with which to confirm the sensitivity of
the detector satisfies operational requirements.
k.
Sensitivity Control Test.
This test confirms the sensitivity control allows the operator to
make adjustments to the sensitivity of the F3 COMPACT. The test is conducted as follows:
•
Set the sensitivity to the default position 4.
•
Turn on the detector.
•
Conduct the test piece test (refer to Section 2.2.j). Check that a faint but clear audio tone
is heard and that more than one LED illuminates.
•
Decrease the sensitivity of the F3 COMPACT by rotating the sensitivity knob counter
clockwise to position 2. A single low pitched beep will be heard to prompt the operator
that the sensitivity is being decreased.
•
Conduct the test piece test again and ensure no audio or LED response occurs.
•
Move the sensitivity knob to position 4 and confirm a double beep occurs. This prompts
the operator that default sensitivity (position 4) has been selected.
