Sensitivity Setting - Raymarine FishFinder L265 Instruction Manual

Sensitivity Setting

The sensitivity adjusts the ability of the unit to tell the differences between
echoes of different strengths. In general, the sensitivity should be as high
as possible, to detect the fish and show the detail on the bottom. How-
ever, if the sensitivity is too high, the unit will begin to see bubbles in the
water, debris, and other "background noise." Use a higher sensitivity
setting for deeper water, and a lower setting for shallower water.
If you adjust the sensitivity while you are looking at the Sidelooker display,
this will affect the sensitivity for the Sidelooker feature only.
From the menu item for the range setting, press the
control pad. The next menu item will allow you to set the sensitivity. See
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Fig. 4-3. Use the and
Manual sensitivity.
Auto sensitivity
The FishFinder can be set to select the sensitivity by itself,
automatically. The unit chooses the sensitivity setting
which will detect fish, but will also show a minimum of
background noise. If the amount of background noise
changes (due to changing depth or water conditions), the
FishFinder will change the sensitivity to adjust. (You can
adjust the sensitivity of the unit while it is using Auto
sensitivity. Once Auto sensitivity is selected, use
the arrow on the Page control pad to go to the next line,
then use the
fine-tune the setting. When the FishFinder is turned off,
then on again, the Auto sensitivity setting will return to the
normal or default setting.)
48
Fig. 4-3
Sensitivity
Setting
arrows on the Page control pad to select Auto or
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and arrows on the Page control pad to
arrow on the Page
Setup Instructions