Uniden Clock - Manual (Page 18)

SHALLOW WATER SENSITIVITY
The Shallow Water Sensitivity controls a circuit in the depth sounder that
affects the first 10 feet of water. It alters the system’s response time in
this area only, and can be used to compensate for installation
imperfections.
Example:
•
SHALLOW READINGS: If your instrument occasionally displays
random, false shallow readings such as 3.1’, 2.8’, and 4.3’, you
may need to adjust this control.
•
DEEPER READINGS: If your unit is reading false echoes which
are deeper than the actual depth, you may not have enough
sensitivity, which can also be corrected by using this control.
•
“0.0” READINGS: Adjusting this control too far in either direction
could affect your readings. For example, if the adjustment is at an
extreme, it could actually cause the unit to give a “0.0” reading at
a deeper depth. The true depth could be 30 feet, and if the
control is too far counterclockwise, the readout could be “0.0”.
This adjustment fine tunes the installation of your gauge to the location of
the transducer on your boat and to the waters where you do your
boating. It is typically an adjustment that is made by the boat owner
since it is performed while the boat is in the water.
Each depth gauge is tested at the factory with a transducer located in a
water tank. The Shallow Water Sensitivity is then factory preset.
However, after installation for your local waterways, you may need to
perform this minor adjustment so that the depth gauge operates at its
maximum potential on your boat.
With Inside-the-Hull Transducer installations, it is especially important
to perform this adjustment. It is impossible to control the many types of
hull configurations on the many varieties of boats available today. Since
fiberglass hulls are generally hand-layered, the hull thickness can vary
from boat-to-boat even though they may be the same model. Thickness
of the fiberglass combined with the many types of bottom conditions
(sandy, rocky, muddy) can affect the readings on your digital depth
sounder. This control enables you to tune your gauge more precisely so
that the unit reads properly. Unless major changes take place in your
boating environment, you should not need to adjust this setting again.
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