Operation Manual

Configuration | 49
Calibrate by speed over ground
With a GPS connected to the system, the speed may
be automatically set identical to the speed over ground
value.
This adjustment should be made in calm sea with no
effect from wind or tidal current.
Bring the boat up to cruising speed (above 5 knots)1
Select 2 Calibrate w/SOG and press the Menu/
Enter key to start the calibration
When the calibration is completed the 3 SPD
Correction factor is set to 1.00
Manually adjust the speed value
If you experience an incorrect speed reading this can be
manually re-adjusted as follows:
Compare the speed reading with that on another -
boat
Run the boat at constant speed over a known -
distance in both directions and average the speed
reading
Then adjust the SPD Correction factor to get the
correct speed reading.
Range Change per step Default value
-0.50 - +1.50 0.01 1.00