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Imaging Sensitivity
Settings: Auto, 1 to 20, where Low = 1, High = 20;
Default = 10
Imaging Sensitivity
controls how the sonar returns are displayed on the
Down Imaging™ Views.
Increase the Imaging Sensitivity
to reveal weaker returns that may be of
interest, especially in very clear water or greater depths. A high imaging
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 Imaging 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.
Upper Range
(Advanced)
Settings: 0 to 990 ft or 0 to 397 m [International models
only], Default = 0
Upper Range
sets the shallowest depth range that will be displayed on the
Down Imaging™ Views. Upper Range is often used with Lower Range.
NOTE:
A minimum distance of 10 feet will be maintained between the Upper and
Lower Range regardless of the manual settings entered.
Lower Range
Settings: Auto, 10 to 1200 ft, 3 to 400 m [International
Models only]; Default = Auto
Lower Range
sets the deepest depth range that will be displayed by the unit.
For example, if you are only interested in the area between 20 and 50 feet deep,
you should set the Upper Depth Range to 20 and the Lower Depth Range to 50.
The Sonar View will then show the 30 foot area between 20 and 50 and will not
show the surface or the bottom (assuming the bottom is deeper than 50 feet).
Greater detail will be shown for the area between 20 and 50 feet.
Down Imaging
™
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