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44 GPSMAP 400/500 Series Owner’s Manual
Conguring the Chartplotter
Calibrate Water Speed—use this menu to calibrate a speed-sensing
device. Follow the on-screen directions for calibration. If you do not
have a speed-sensing device, this menu does not appear.
NOTICE: If the boat is not moving fast enough or the speed sensor
is not registering a speed, a “Speed Too Low” message appears.
Select OK, and safely increase the speed of the boat. If you get the
message again, stop the boat and make sure the speed-sensor wheel
is not stuck. If the wheel turns freely, check the cable connections. If
you continue to get the message, contact Garmin Product Support.
Fuel Capacity—enter the total fuel capacity of your boat.
Conguring Other Vessels
To congure settings for boats other than your own, from the Home
screen, select Congure > Other Vessels.
To congure AIS or DSC information for other boats, your unit must
be connected to an external AIS or DSC device.
AIS
—turn AIS (Automatic Identication System) on or off. AIS
alerts you to area trafc by providing boat IDs, position, course,
and speed for boats that are within range and equipped with a
transponder.
DSC
—turn DSC (Digital Selective Calling) on or off.
AIS Alarm
—turn a safe zone around your boat on or off. This is
used for collision avoidance, and the zone can be customized.
To customize safe-zone settings:
From the Home screen, select Congure > Other Vessels > AIS
Alarm.
Range—change the measured radius of the safe-zone ring to
a specied distance from 500 ft. to 2.0 nm (or from 150 m to
3.0 km, or from 500 ft. to 2.0 mi).
Time to (Safe Zone)—sounds an alarm if AIS or MARPA
determines that a target will intersect the safe zone within the
dened time interval (from 1 to 24 minutes).
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