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Position Page
The GPS 45XL’s position page shows you where you are,
what direction you’re heading and how fast you are going
(up to 99.9 mph), and is most useful when you are travel-
ling without an active destination waypoint. A graphic com-
pass tape at the top of the page displays your cardinal head-
ing (while you’re moving), with your current track and
speed over the ground indicated below. The rest of the page
shows your present position in three dimensions (latitude,
longitude and altitude). The units of measure for speed,
distance, position and altitude are all user-selectable
through the navigation setup menu (see pages 47-48). The
12/24 hour clock and time offset options are available from
the system setup menu (see page 46).
Trip Odometer
The position page also features a resettable trip odome-
ter to measure the total distance travelled while navigating.
To reset the trip odometer:
1. Press the
D
key until the trip field is highlighted.
2. Press
E
,
followed by
L
.
3. Press
E
to finish.
Altitude Display
When the GPS 45XL is acquiring satellites or navigating
in the 2D mode, the last known altitude will be used to
compute your position. If the altitude shown is off by sev-
eral hundred feet, you can manually enter your altitude for
greater accuracy. Note that GPS altitudes can fluxuate due
to errors.
1. Press the
D
key until the altitude field is highlighted.
2. Press
E
to begin entry of your altitude.
3. Use the
U
and
D
keys to enter a value in each char-
acter field, and use the
L
and
R
keys to move to the next
character position.
4. Press the
E
key to confirm the altitude.
20
Reference
Position Page
The speed displayed on the
position page may fluctuate
at slow speeds (or when
you’re standing still).
To reset the trip odometer,
highlight the trip field and
p ress ENTER. Use the
LEFT arrow key to clear the
distance field and pre s s
ENTER to confirm.
GPS 45XL Manual C 8/4/98 3:06 PM Page 20