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. Be- fore 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 sen- sor is reading 5 percent slower than true speed, you will enter + 5 in the window.
When you make a run to compare your ground speed to speed sensor speed, perform your test in relatively calm water free of current, if pos- sible. (Unless, of course, you are taking the current speed into consid- eration when making your calculation.) After you have a correction fig- ure, here's how to enter it:
1. Press MENUMENU↓ to CALIBRATE WATER SPEEDENT.
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