Speed Calibration - Raymarine mn100 User Manual

mn100 Digital Display
4.2

Speed Calibration

To ensure that the boat speed (and distance) is accurate it is necessary
to calibrate the speed to take into account variations in water flow
between different hulls. Adjustment is made by multiplying the speed
through the water (V) by a percentage calibration factor.
It is essential to carry out this procedure at a time where little or no tide
is flowing.
T o enter a Log Calibration Factor
With the vessel under power, steer a straight course allowing the boat
speed reading to settle to a constant value. Check the GPS is showing
a constant SOG.
Press and hold the
Press the
Press the
Press the
normal operation.
Should you be unable to carry out this procedure due to strong tidal
conditions or poor GPS information there is further information regarding
Speed Calibration using a measured distance on the Raymarine website
at www.raymarine.com.
30
button for 2 seconds to enter Setup
button repeatedly to scroll to the SETUP SPEED chapter
button to advance to the Speed Calibrationpage
button to enter Edit Mode
Press the and
factor until the speed reading displayed matches the GPS
SOG reading
Press the button to exit Edit Mode
Press and hold the
buttons to change the calibration
button to exit Setup and return to
www.raymarine.com