Remote Display
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4.4 Compass Calibration and Alignment
To ensure that inaccuracies caused by metallic and magnetic objects on
the boat are kept to a minimum it is necessary to calibrate or swing the
compass. A deviation caused by surrounding objects will be
compensated for and the compass reading may be set to the correct
heading.
Press and hold the button for two seconds to enter Setup.
Press the button repeatedly to select the Sensors chapter.
Press the button to enter the Sensors chapter.
Press the button repeatedly to select the Compass page.
Press the button to enter the Compass page.
To Complete a deviation correction turn:
Press the button to advance to the DEV parameter.
Press the button to enter Compass Calibration Mode.
Turn the vessel slowly keeping the speed below 4 knots and
taking approximately 2 minutes to complete 360 degrees.
Keep turning the vessel until the display changes to show a
new value (usually about 1.25 turns)
Note: If the rate of turn of the vessel is too fast the display will show
TURN HIGH. It is not necessary to abandon the turn at this stage but
do lessen the rate of turn by reducing speed or widening the turning
circle.
If required, press the button to cancel Compass Calibration Mode,
the system will revert to its previous value.
Then, to align the heading:
Steer the vessel on a known heading.
Note: Only use the main steering compass as a known heading if you
are certain it has been checked and compensated.
Press the button repeatedly to display the HDG +/-nnn (heading
angle) parameter.
Press the button to enter Edit Mode.
Press the and buttons to change the displayed
heading (in small text) to the known correct value. The
display will show the offset entered.
Press the button to exit Edit Mode.
Press and hold the button to exit Setup and return to normal
operation.
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