Press the
button to highlight the Map Datum Type and
then press
or
to select the desired Map Datum.
The following list shows the GPS map datums contained
within the
Precedus
. Each map datum represents a
mathematical model of the earth used for the purpose of
establishing precision in charting various areas of the earth.
Since each datum relies on a different mathematical model,
inconsistencies exist in defining the location of charted
points between datums. For this reason, it is important to
verify that you have selected the correct map datum for the
area where you navigate and the chart you use.
Note
WGS-1984 is the default datum until you change
it.
52
Function Reference
Datum Name
Ellipsoid
(Model)
ARC 1950
Clarke 1880
ARC 1960
Clarke 1880
Australian Geodetic 1966
Australian National
Australian Geodetic 1984
Australian National
Bogota Observatory
International
Campo Inchauspe
International
Cape
Clarke 1880
Carthage
Clarke 1880
Chatham 1971
International
Chua Astro
International
Corrego-Allegre
International
European 1950 West Europe
International
European 1950 Cyprus
International
European 1950 Egypt
International
European 1950 Iran
International
Содержание Apollo Precedus
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