Minelab GP 3500 Service Manual download pdf (Page 15)

THE MINELAB ‘GP extreme’

CONTROLS

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Tone

Figure 4.15

Adjusts the tone of the threshold. The user may set this to the

preferred tone, e.g. the tone at which the operator

’s hearing is

most sensitive.

At minimum position, threshold is set at a low tone. Turning

clockwise increases the tone to higher pitch.

Signal Pitch

Figure 4.12

Adjusts the pitch response of the target signal.

In Figures 4.13 and 4.14 the curving line represents the high/low

pitch response to a target. The dotted line represents the

threshold tone.

• At minimum position the high/low pitch variance to a target is

reduced.

• At maximum position the high/low pitch variance to a target is

increased.

CONTROL FUNCTIONS

Figure 4.12 Signal control

Audio

Figure 4.13 Reduced pitch variance

Figure 4.14 Increased pitch variance

P0522-A

P0510-A

P0510-B

Audio

Figure 4.15 Tone control

P0523-A

THE MINELAB ‘GP extreme’

CONTROLS

Front Panel

Figure 4.16

Figure 4.16 Rear Panel

CONTROL FUNCTIONS

P0510-A

Tune

Figure 4.17

Reduces the effects of electromagnetic interference from sources

such as power lines, radio transmitters and other metal

detectors.

Automatic tuning is started by pressing and releasing the Tune switch.

The tuning process takes approx. 60 sec. and completion is

indicated by three sharp

‘beeps’.

Figure 4.17 Tune control

P0524-A

1 2 ... 10 11 12 13 14 15 16 17 18 19 20 ... 33 34

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Minelab GP 3500 Service Manual Page 15

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