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Calibration 31
Speed
To calibrate the speed functions:
1. With the User calibration entry screen displayed, press the speed key.
2. Referring to the User calibration - speed illustration, carry out the
calibration procedure. Use the speed key to cycle from screen to
screen and the trip and reset keys to set the required values at each
screen (except Adjust to SOG display).
Set speed units
Select either KTS (knots),MPH (miles per hour) or KMH (kilometres per
hour), as required.
Set speed resolution
Select resolution of either 0.01 or 0.1as required.
Set log units
Select either NM (nautical miles), SM (statute miles) or KM (kilometres),
as required.
Setting the correct speed
Set the displayed (current) speed using one of the following methods:
• Usethe Adjust to SpeedOver Ground (SOG)screen to automatically
setthecurrentspeed toSOG(ifavailablefrom SeaTalk).Youmustbe
running in slack tide conditions to successfully use this method.
• Manually apply a calibration factor by means of the Cal factor adjust
screen, to set the displayed speed value to your best estimate of the
vessel’s speed.
81040_1.book Page 31 Thursday, November 7, 2002 10:21 AM