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Automatic Sensitivity
The default sensitivity mode is automatic. The unit bases the
sensitivity level on water depth and conditions. When the unit is in
automatic mode, sensitivity is automatically adjusted to keep a solid
bottom signal displayed, plus a little more power. This gives it the
capability to show fish and other detail.
Situations occur, however, that may make it necessary to increase or
decrease the sensitivity. This typically happens when you wish to see
more detail, so an increase in sensitivity is necessary. When wave
action and boat wakes create tiny air bubbles that clutter much of the
water column, a decrease in sensitivity will 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 mode, 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).