Minelab F3 Manuel de service télécharger pdf (Page 19)

F3 INSTRUCTOR NOTES

Minelab Countermine Division Safety Through Excellence

P0647-A

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Red Sensitivity Endcap:

Hold the Test Piece above the middle of the Coil with the

rounded end (containing the metallic target) TOWARDS 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 clear response (change in

Threshold Tone volume and pitch) should be heard

indicating the sensitivity of the detector is correct.

NOTE

The Test Piece not only ensures the sensitivity 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 15cm . (Black Endcap only).

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Seventeen

Optional Procedures

• If after Step ONE the Threshold Tone is not low and steady, conduct one or

both of the following:

o Noise Cancel. If the Threshold Tone is noisy or uneven when the

coil is stationary, conduct Noise Cancel.

NOTE

The detector cannot be used for clearing operations during the Noise Cancel

procedure.

The coil should not be moved during this procedure nor should

metallic objects be brought near the coil during this procedure.

Holding the coil stationary and at least 600mm (24ins) above the

ground press and immediately release the Noise Cancel button

(Black Button located behind the handle).

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Minelab F3 Manuel de service Page 19