Garmin GPS 38 - Manual (Page 52)

Units of Measure
The GPS 38 lets you select statute (default), nautical or
metric units of measure for all speed and distance fields.
To change the unit of measure:
1. Highlight the ‘UNITS’ field and press the E key.
2. Select the desired unit of measure.
3. Press the E key to confirm the selection.
Magnetic Heading Reference
The GPS 38’s heading information can be displayed ref-
erencing magnetic north (auto or user-defined), true north
or calculated grid headings. The default setting is automatic
magnetic north, which is suitable for most applications.
To select a heading reference:
1. Highlight the ‘HEADING’ field and press E .
2. Select the desired heading preference.
3. Press the E key to confirm the selection.
To enter a custom magnetic heading:
. 1. Select the ‘USER MAG’ option and press E .
2. Enter the degrees and direction of magnetic
variation.
3. Press the E key to confirm the magnetic
variation value.
Map Setup and Orientation
The map setup page lets you select map orientation and
specify what items are displayed. The map may be oriented
to north up, the direction of current travel (track up) or the
direction of an active route leg (desired track up). The
default setting is track up.
To change the map orientation:
1. Highlight the ‘ORIENTATION’ field and press E .
2. Select the desired setting and press E .
Magnetic Heading
To enter a user- d e f i n e d
magnetic variation, select
the ‘User Mag’ option and
enter the desired direction
and value.
Map Setup Page
The map orientation can be
set to track up, north up, or
desired track up. The plot-
ted items options let you
define what appears on the
map display.
R E F E R E N C E
Navigation
Setup
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GPS 38 Man Rev B 7/23/98 4:34 PM Page 48