Selecting Map Datum; Selecting Elevation Mode - Magellan GPS 315 User Manual

Selecting Map Datum

You can change the datum the receiver uses to compute
position coordinates. You will want your receiver's datum to
match the datum on the map or chart you are using. Use
the map "legend" to determine the datum required for the
map or chart. If you are not using a map or chart or are
unsure which datum to use, select WGS84.
Default setting: WGS84

Selecting Elevation Mode

You have the option of changing your elevation mode to 2D
(2-Dimensional) or 3D (3-Dimensional). You may find 2D
useful if you know the elevation of your position and the
elevation will not change. Your receiver will compute
elevation in 3D mode but will not in 2D mode.
FIG
E
If you select 3D, the receiver will return to SETUP. If 2D is
selected, the receiver will ask for elevation.
.
FIG
F
Default setting: 3D
Magellan SporTrak
Select
SETUP
.
FIG
D
Select
datum
Select
SETUP
.
Select
3D or 2D
Input
elevation
Select
MAP DATUM
Select primary
or secondary
Select
ELEV MODE
WPT NAMES MAP DATUM WPT NAMES WPT NAMES
OFF OFF OFF PRIMARY
SECONDARY ON ON ON
Figure D. Be sure
the map datum
matches the datum
required for the
maps or charts you
are using.
WPT NAMES ELEV MODE WPT NAMES WPT NAMES
3D
OFF OFF OFF
2D
ON ON ON
Figure E. You can
choose from 2D
or 3D.
ELEVATION WPT NAMES WPT NAMES WPT NAMES
OFF OFF OFF
0000FT
ON ON ON
Figure F. If you
are at sea level, you
can use 2D
because your
elevation is zero.
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