Humminbird 4087301 Marine GPS System User Manual


 
Structure ID® represents weak returns as light pixels and
strong returns as dark pixels. This has the benefit of
ensuring that strong returns will be clearly visible on the
display.
Black (Bottom Black [monochrome models only]) displays
all pixels below the bottom contour as black, regardless of
signal strength. This has the benefit of providing a high
contrast between the bottom and other sonar returns on
the display.
WhiteLine™ highlights the strongest sonar returns in
white resulting in a distinctive outline. This has the
benefit of clearly defining the bottom on the display.
Inverse (monochrome models only) is a method where
weak returns are shown with dark pixels and strong
returns with lighter pixels. This has the benefit of
ensuring that weak signals will be clearly visible on the
display.
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Set Up the Control Head