Position
There are three POS screens in the CDU. The POS func-
tions are highly interactive with a number of CFG1 menu
selections.
The following CFG1 menus directly impact the POS func-
tions:
COG SOG • - sets the filtering time for the displayed
values.
Datum • - sets the reference datum for your present
position.
DGPS • - sets the internal or external control for RTCM
SC-104 corrections which affect your position accu-
racy.
GPS • - sets an offset for calculating the GPS antenna
position if you can’t physically locate the antenna ex-
actly where you want it (i.e. over the centerline of the
boat); sets the minimum elevation angle to look for
satellites; and in 6 channel models, it also controls the
satellite selection process.
Navigation • - sets a variety of important functions and
alarms (used in other function screens), but only the
Range units:
nautical miles (Nm) -
nautical miles and meters (Nm/mtrs) -
nautical miles and feet (Nm/ft) -
statute miles (Sm) -
statute miles and meters (Sm/mtrs) -
statute miles and feet (Sm/ft) -
kilometers (Km), or -
kilometers and meters (Km/mtrs), affect the - POS
screens.
Position • - sets Lat/Lon or UTM, Grid (optional) and
some alarm limits.
Time • - sets appropriate offsets, and 12 or 24 hour
clock mode.
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