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Backlight Level
The unit defaults to the maximum backlight level. To adjust the
display's backlight level:
Press
MENU|MENU|↓ to BACKLIGHT LEVEL|ENT. The BACKLIGHT LEVEL slider
bar appears. Press ↑ or ↓ to move the bar. At The lower end of the scale
backlighting is turned off; the upper end is maximum backlight level.
The Backlight Level control bar appears automatically whenever you
turn on the unit.
Calibrate Speed
The speed sensor can be calibrated to compensate for inaccuracies.
Before you change the setting, first calculate the percentage that the
speed is off. You will enter this percentage in a moment.
For example, if you figure the sensor is reading 10 percent faster than
actual speed, you will enter – 10 in the calibration window. If the
sensor is reading 5 percent slower than true speed, you will enter + 5 in
the window.
Perform your test in relatively calm water free of current, if possible.
(Unless, of course, you are taking the current speed into consideration
when making your calculation.) After you have a correction figure,
here's how to enter it:
1. Press
MENU|MENU|↓ to CALIBRATE WATER SPEED|ENT.
2. Enter the number you calculated earlier: press ↑ or ↓ to change the
displayed number. Continue until the percentage is correct, then press
EXIT.
Chart Speed
The rate that echoes scroll across the screen is called the chart speed.
The default is maximum; we recommend that you leave the speed set
there for virtually all fishing conditions.