Fisher 1280-X Aquanaut - Searching Techniques

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SEARCHING
Good search techniques remain the same whether you’re using
your 1280-X in the desert or on the bottom of the ocean.
1. Decide how much discrimination you want to use.
a. In relatively non-trashy areas you may wish to search
at zero discrimination. In this manner, your 1280-X is
at its most sensitive and will detect all metal targets
within its range. Once an object is detected, you
can increase the discrimination level for further target
identication.
b. In trashy areas, it is generally easier to search at a higher
level of discrimination (at the pull tab discrimination
point for example). This way you will detect mostly
good targets and can lower the discrimination level
for pinpointing (zero discrimination will produce the
strongest signal on small or deep targets).
2. Search slowly and systematically, sweeping in a tight
semi-circle.
3. Keep the coil parallel to, and as close to the ground as
practical.
4. Overlap your sweeps at least 50%
5. Search in a methodical manner. Pay close attention to
where you’re going and where you’ve been.
6. Keep the searchcoil moving at a comfortable rate.
NOTE:
Other motion detectors may require a very rapid sweep for
Figure 6. Keep the
coil parallel and as
close to the ground
at all times
BATTERY REPLACEMENT
3. If you have removed the gasket, see page 23 for installation
instructions.
An improperly installed gasket = a water leak!
4. Submerge the detector in water for 1/2 hour.
a. Remove from water.
b. Dry off the detector
c. Remove the battery door
d. Verify that no water has entered.
This step is necessary to insure that you are applying
enough force to the screws.
5. If you cannot tighten the screws securely by hand, then use a
screwdriver.
a. Tighten the screw a maximum
additional rotation of 15° beyond the
hand-tightened position.
6. Lithium grease is installed between the
contact surfaces of the thumb-screw and
insert in the case.
a. Do not wipe off the grease.
b. With usage, the grease may wear off.
c.Without grease, the thumb-screw may seize up after
tightening. If this happens, reapply a small amount of
lithium grease between the contact surfaces.
VERY IMPORTANT
Follow these instructions carefully to avoid getting water in the
battery compartment.
1. Tuck in the wires. Do not pinch them in the seal when closing.
2. Tighten the knobs SECURELY.
a. Use a coin.
b. Tighten by hand FIRMLY.
Use maximum MANUAL force.
c. Do Not use a tool.
d. Do Not use a screwdriver.
Torque Specication is 8 in-pounds.
1280Xmanual-8702460000-2014.indd 10 1/5/15 3:52 PM