Garmin GPS 48 - Manual (Page 36)

Marking a Position
The GPS 48 allows you to mark and store up to 500
position as waypoints. A waypoint can be entered by
taking an instant electronic fix, by manually entering
coordinates (pg. 35), or by using the bearing and dis-
tance to a known position (pg. 35).
To mark your present position:
1. Press
M
. The mark position page will appear,
showing the captured position and a default three-
digit name.
2. To save a default name and symbol, press
E
to
confirm the ‘SAVE?’ prompt.
Position Averaging Function
The GPS 48 positioning averaging function will help
reduce the effects of selective availability upon position
error when marking a waypoint.
1. After you have pressed the
M
key, highlight the
‘AVERAGE?’ field and press
E
. The Figure of Merit
(FOM) field will display the value reflecting estimated
accuracy of the averaged position. Note: As the GPS
48 calculates the FOM, it will rapidly change before it
stabilizes on one number.
2. The unit will continue averaging until you have high-
lighted ‘SAVE?’ and pressed
E
.
To enter a different waypoint name:
1. Highlight the waypoint name field, and press
E
.
2. Make the appropriate changes, and press
E
.
3. Highlight ‘SAVE?’, and press
E
.
Note: To enter a different waypoint symbol or com-
ment, see pg. 23.
To add this waypoint to a route:
1. Highlight the ‘Add to route number’ field, and press
E
.
2. Enter a route number, press
E
to confirm the route
number, and
E
again to save the waypoint.
Marking a
Position
REFERENCE
32
After initiating the posi-
tion averaging function, a
Figure of Merit value will
be displayed, and the
‘SAVE?’ field will auto-
matically be highlighted.
The GPS 48 will save new
waypoints with a default
three-digit name. To add
the waypoint to a route,
enter the desired route
number, highlight ‘SAVE?’
and press ENTER.
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