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74 GPSMAP 76CSx Owner’s Manual
MAIN MENU > SETUP MENU
Map Datum—describes geographic locations for
surveying, mapping, and navigation and are not actual
maps built in the unit. The default setting is WGS 84.
The unit automatically chooses the best datum based
on your chosen position format.
For more information about selecting Position
Formats and Map Datums, see page 95 in the
Appendix.
WARNING: Selecting the wrong map datum
can result in substantial location errors. You
should only change the position format if you are
using a map or chart that specifies a different
position format or map datum or want to use
a format you are familiar with.When in doubt,
use the default WGS 84 datum for best overall
performance.
Distance/Speed—select the unit of measurement to
show your speed and distance traveled.
Elevation (Vert. Speed)
—select the unit of
measurement (Feet (ft/min), Meters (m/min), or
Meters (m/sec)) to show your altitude.
Depth—select the unit of measurement (Feet,
Fathoms, or Meters) to show the depth.
Temperature
—select the unit of measurement
(Fahrenheit or Celsius) to show temperature.
Pressure
—select the unit of measurement (Inches,
Millibars, or Hectopascals) to show pressure.
Heading Setup
Use the Heading Setup Page to specify the type of
heading display and the type of North reference used
to calculate your heading.
NOTE: Unless you have a working knowledge
of Headings and North Referencing, it is
recommended that you use the default values.
To access the Heading Setup Page:
On the Setup Menu Page, highlight the
Heading icon, and press ENTER.