11
DSI
Contrast
Adjusts the brightness ratio between light and dark
areas on the screen, making it easier to distinguish
suspended objects from the background.
DSI units do not have a Sensitivity setting like tradi-
tional sonar units. Contrast functions as the sensi-
tivity setting for DSI units.
Adjust
Accesses the Contrast adjustment
scrollbar, allowing you to adjust
contrast settings.
Range
Selects the deepest range shown on the
display. Range settings display the sec-
tion of the water column from the water
surface to the selected depth range.
Custom Range — Upper and Lower Limits
Used to select the upper limit and lower limit of
a section of the water column. That allows you to
view a section of the water column that does not
include the water surface.
Upper and lower limits must be at least 6.5 ft (2m)
apart.
Contrast set
to 40
Contrast set
to 60
Contrast set
to 80
DSI only.indb 11
9/14/2011 7:17:50 PM
