Garmin GMI 20 - Manual (Page 10)

10 GMI 10 Quick Start Manual
True—sets true north as the
heading reference.
User Mag Var—allows you to
set the magnetic variation value.
Beeper—set when the GMI 10
makes audible sounds.
Auto Power—select if the unit
powers on with the NMEA 2000
network.
Language—select the on-screen
language.
Operating Mode—set the GMI 10
for normal operation or for a store
demonstration.
Position—specify how the GMI 10
handles coordinates and maps.
Position Format—change the
coordinate style in which a given
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location reading appears.
Map Datum—change the
coordinate system in which the
map is structured.
CAUTION: Do not change
the position format or map
datum unless you are using a
map or chart that specifies a
different position format or
map datum.
Time—specify how the GMI 10
handles time information.
Time Format—select a 12 hour,
24 hour, or UTC time format.
Time Zone—set the time
zone you want to use for time
readings.
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