For Diving - Fisher Labs CZ-21 QuickSilver Operating Manual

SETTING UP
3. You should now be able to move into your "search"
SETTING UP FOR DIVING
Unlike most VLF metal detectors, the CZ-21 works well in salt
water. This capability, along with its deep-seeking sensitivity, makes
it ideal for underwater treasure hunting and wreck diving. The CZ-21
is waterproof to a depth of 250 feet. Remember, always practice
safe diving methods.
When diving with your CZ-21, use the shortest stem length
possible, with the extra cable wrapped tightly around the stem,
as closely as possible to the control housing. Never hipmount your
control housing while diving.
1. Adjust the stem length as short as you can without having
the search coil detect your diving gear.
2. Adjust the search coil parallel to the sea bed, river or
lake bottom.
3. Make sure extra cable is coiled tightly on the upper stem
as closely as possible to the control housing, with just
enough slack near the search coil to allow it to swivel
as far as it can in either direction. Too much loose cable
near the search coil may generate false signals.
4. Remove the tethered earphone plugs for rapid pressure
equalization as you dive and return to the surface.
Control housing
Figure 5.
position by leaning slightly forward and raising the
search coil no more than 2 inches above the ground.
Your arm should still be straight, and the coil should
be parallel to the ground, about 12 inches in front
of your foot. The coil angle may have to be slightly
readjusted at this point.
Shortened stem length
Extra, coiled
cable
7