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17.8.0 Auto Mode
Allows the Fish Finder to automatically adjust receiver Gain depending on water depth.
17.8.1 Manual Mode
Allows the user to change the Gain manually to fine tune the Fish Finder's receiver.
17.9
RANGE MENU
17.9.0 Range Mode
Selects among Manual, Auto Range and Bottom Lock.
· Manual Mode
Used to set the depth Range (from the surface) the Fish Finder display will show.
· Auto Range
The Fish Finder automatically determines the Range to keep the bottom visible in the
lower bottom of the screen. In this mode, Shift is always set to 0.
· Bottom Lock
The Bottom Lock function keeps the screen display locked onto a certain Range around
the bottom. Let's say the bottom is 400Ft and the Bottom Lock Range is set to display
30Ft around the bottom, the screen (instead of displaying from 0Ft to e.g. 450Ft) will
display only a Range of 30Ft around the bottom, e.g. from 380Ft to 410Ft.
17.9.1 Depth
Moves the display from showing the bottom to the depth value entered.
17.9.2 Shift
Shifts the display from the bottom of the transducer to the depth value entered.
Example: Your vessel is in about 57Ft of water, however there is fish suspended in 35Ft
of water. You want to display to 10Ft area around the fish. Shift would be set
to 30Ft and Depth would be set to 40Ft shown in the following example.
CP390i and CPF390i
Figure 17.9 - Range Menu
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