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UNDERWATER

The IMPULSE is waterproof to 250 feet, and it operates the same

underwater as on land. However, some differences in search

technique should be noted.

1. Tune your IMPULSE underwater, on the bottom.

You may want to run your threshold tone and

volume slightly higher than you would on land. If

you’re wearing a hood, you’ll probably have to

turn the volume control to maximum.

2. Keep the coil as far away from you (and your

dive gear) as possible. Sweep the search coil back

and forth in a wide semi-circle in front of you to

cover the bottom in a methodical manner.

3. Keep the coil parallel and as close to the bottom

as possible. Overlap your sweeps at least 50 percent.

4. Because your IMPULSE is a no-motion detector,

you can detect buried metallic objects in cracks,

crevices and out-of-the-way places without

having to move the coil back and forth.

5. Remember, observe all the rules of safe diving.

7. Take your time. If

you walk too fast you

can’t overlap your

sweeps, and you’ll

miss a lot of ground.

NOTE: Your threshold tone will

probably go up and down as you

search. This is a perfectly normal

response since the distance

between your coil and the ground

varies as you sweep the coil back

and forth. You may want to readjust your threshold level slightly to

maintain a comfortable “average” threshold volume. You will also

have to readjust it if the ground mineralization changes sufficiently

or if you enter or leave wet sand.

The LCD

indicates signal

strength and

continuously

monitors

battery

conditions.

SEARCHING

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Visual Land Impulse Istruzioni per gli Interventi Pagina 14