Cancel Navigation (Only When Navigating); Down Sensitivity - Humminbird 398ci SI Combo Operation Manual

Cancel Navigation discards the current route and exits Navigation Mode. This
menu option will only appear when you are currently navigating a route. This
will not delete a previously-saved route.
Down Sensitivity controls how the sonar returns are displayed on the Down
Imaging® Views.
Increase the Down Sensitivity to reveal weaker returns that may be of interest,
especially in very clear water or greater depths. A high sensitivity setting shows
more sonar returns from small baitfish and suspended debris in the water;
however if the sensitivity is adjusted too high, the display may become too
cluttered.
Decrease the Down Sensitivity to eliminate the clutter from the display that is
sometimes present in murky or muddy water. If the sensitivity is adjusted too
low, the display may not show many sonar returns that could be fish.
Down Imaging® X-Press™ Menu
Cancel Navigation
(only when Navigating)
Settings: Press the RIGHT Cursor key and follow screen
instructions.

Down Sensitivity

Settings: 1 to 20, where Low = 1, High = 20;
Default = 10
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