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48 GPSMAP 400/500 Series Owner’s Manual
Conguring the Chartplotter
Heading—sets the reference used in calculating heading
information.
Auto Magnetic
—automatically sets the magnetic declination for
your location.
True—sets true north as the heading reference.
Grid
—sets grid north as the heading reference (000º).
User Magnetic—allows you to set the magnetic variation value.
Position Format
—change the coordinate style in which a given
location reading appears. Do not change the position format unless
you are using a map or chart that species a different position
format.
Map Datum
—change the coordinate system in which the map is
structured. Do not change the map datum unless you are using a map
or chart that species a different map datum.
Time—set the time options.
Time Format
—select 12-hour, 24-hour, or UTC time format.
Time Zone—set the time zone you want displayed for time
readings. If Auto is selected for the Time Zone, the DST option
is not available and is automatically set to Auto.
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DST (Daylight Saving Time)—select Off, On, or Auto. The
auto setting automatically turns daylight saving time on or off,
depending on the time of year.
Baro. Ref. Time
—specify the reference time (from 30 minutes
to 24 hours) used to calculate the barometric pressure trend.
The trend is displayed on the wind gauge when ground wind is
selected (page 36) or on the Cruising data bar (page 9).
Changing the System Language
To change the system language, from the Home screen, select
Congure > Preferences > Language. Select the language.
Conguring Navigation Preferences
To change navigation preferences, from the Home screen, select
Congure > Preferences > Navigation.
Route Labels—for saved routes, this determines whether route
turns are indicated by number (Turn 1, Turn 2, and so on) or by
waypoint name, or whether the description of turns is hidden.
Turn Transition—set how much time or how far before a turn in a
route that you transition to the next leg.
Speed Sources—specify the sensor used for wind numbers and fuel
economy. Select Wind or Fuel Economy to toggle between water
(from a water-speed sensor) and GPS (from the calculated GPS
speed).
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