Minelab F1A4 Servisní příručka stáhnout pdf (Strana 22)

Operations Manual

Page 22

5.2.2 Noise Cancel Procedure

When the detector gives a repetitive warble without the coil being

moved, perform the following electromagnetic Noise Cancel procedure:

CAUTION

Keep the detector very still; do not handle the detector during this

procedure. It can take some time and any movement can upset the

process, as will any metallic objects being moved in the vicinity of the

coil. Also ensure that there are no metallic objects near the coil during

this procedure.

a. Place the detector coil flat on the ground and press the blue Noise

Cancel button.

b. The detector will take 70 seconds to scan the locality and adjust the

detector to a quiet setting. During this time, a continuous, steady

tone can be heard.

c. The detector sounds four beeps once scanning is completed.

d. When this procedure is completed it may again be necessary to

follow the Audio Reset and Ground Balance procedures to

readjust the audio threshold and Ground Balance.

e. If all other settings have been established, test the detector with the

test piece (as described in section 5.4). If the detector test is

satisfactory it is now ready for use.

CAUTION

The F1A4 cannot detect targets while the Noise Cancel procedure is

being performed.

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Minelab F1A4 Servisní příručka Strana 22