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Situations occur, however, when it becomes necessary to increase or
decrease sensitivity. This typically happens when you wish to see more
detail, so an increase in sensitivity is needed. Or when wave action and
boat wakes create tiny air bubbles that clutter much of the water
column. In that case, a decrease in sensitivity is necessary to reduce
some of the clutter.
The control bar used to adjust sensitivity up or down is the same
whether the unit is in the automatic or manual mode. In automatic, you
can adjust sensitivity up to 100 percent but the unit will limit your
minimum setting. In auto, the unit will continue to make small
adjustments, allowing for the setting you selected.
In manual mode, you have complete control over sensitivity, with the
ability to set it anywhere from zero to 100 percent. Once you select a
level in manual, the unit will continue to use that exact sensitivity
setting until you change it or revert to auto mode.
To adjust sensitivity in auto mode:
1. Press
MENU|ENT.
2. The Sensitivity Control Bar appears. Press ↓ to decrease sensitivity;
press ↑ to increase sensitivity. When it's set at the desired level, press
EXIT. (When you reach the maximum or minimum limit, a tone sounds.)
Sonar Menu with Sensitivity command selected (left).
The Sensitivity Control Bar (right).
To adjust sensitivity in manual mode:
1. First, turn off Auto Sensitivity: from the Sonar Page. Press
MENU|↓
to
AUTO SENSITIVITY|ENT.
2. Press ↑ to
SENSITIVITY|ENT and the Sensitivity Control Bar appears.
Press ↓ or ↑ to pick a different sensitivity setting. When it's set at the
desired level, press
EXIT.
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