Minelab F1A4 Manuel de service télécharger pdf (Page 25)

Operations Manual

Page 25

c. Ground Noise - is an irregular broad noise that is difficult or

impossible to pinpoint when moving the coil over the ground.

d. If ground noise is affecting the operator“s performance, rebalance

the detector as described in the Ground Balance procedure.

5.4 Testing Procedure / Using the Test Piece

The F1A4 test piece is used to ensure that when the following test is

performed, operators can have full confidence that the detector is

working to its optimum performance. It should also be noted that under

ideal conditions (detector correctly noise cancelled and ground

balanced within a quiet background) the test piece will register a clear

signal from a greater distance from the centre of the coil.

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Minelab F1A4 Manuel de service Page 25