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The Satellite Page shows a bird’s eye view of the posi-
tion of each satellite relative to the unit’s last known posi-
tion. The outer circle represents the horizon (north up); the
inner circle is 45º above the horizon; and the center point
is directly overhead. You can use the sky view to help
determine if any satellites are being blocked, and whether
you have a current position fix (indicated by a ‘2D NAV’ or
‘3D NAV’ in the status field.
Once sufficient signals have been acquired, the Satellite
Page will be replaced with the Position Page, provided you
have not pressed any other buttons.
Position Page
The second page in the GPS 38’s primary page sequence
is the Position Page. The Position Page shows you where
you are, what direction you’re heading and how fast you
are going, and is particularly helpful when you do not have
an active destination selected. The graphic display at the
top of the page indicates your heading (only while you’re
moving) with the track and speed indicated below.
The graphic compass tape reflects your heading
only while you are moving.
The rest of the page shows your current position in
three dimensions: latitude, longitude and altitude. The
GPS 38 uses this basic information to mark exact positions
as waypoints, which help guide you from one place to
another. A trip odometer and 12/24 hour clock are also
provided.
Once satellites have been
found, hollow signal strength
bars will be displayed while
data is being collected. The
hollow bars can be used to
help determine if satellites
are being shaded.
Position Page
In addition to displaying
your position coord i n a t e s ,
the Position Page shows
your track and speed over
the ground. Speed and alti-
tude data may fluctuate due
to Selective Availability.
G E T T I N G
S TA R T E D
Sky View &
Position Page
10
Status
Battery
Indicator
Satellite
Sky View
Horizontal
Accuracy
Signal Strength
Indicators
Satellite
Number
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GPS 38 Man Rev B 7/23/98 4:32 PM Page 10