Section 4
Speedometer Function
The speedometer measures speed over the water using a paddle wheel sensor.
Speedometer Calibration
The analog speedometer displays the speed of the boat through the water. The speedometer is calibrated at the factory; however, significant variations can occur due to changes in installations. The speedometer can be easily calibrated to a known reference such as a radar gun, measured course or GPS.
When the unit is in digital speed display mode, push and release M to put the speedometer in the calibration mode. Push and hold M down for at least two seconds; the LCD will show “AdJUST.”
Calibration Display
CORC117
Run the boat at a constant 30 MPH as measured by the GPS, radar, or closed course. Adjust the speedometer pointer by pressing s and t until the speedometer matches the known speed.
When finished, press M to exit the adjustment screen. The operator has the option of saving or canceling the adjustment procedure. The options can be selected using s and t. To save the calibration setting, press and hold M for two seconds when the display shows “SAVE.”
Save Display
CORC118
