Garmin GPS III Plus - Manual (Page 41)

your present position) also appear on the Position Page (as default selections). Units of
measure and the position readout are selectable from the Main Menu, as outlined on page
74-75. ‘Trip Computer’ functions—such as average speed, max speed, trip odometer and
trip timer—can each be reset from the Main Menu, as described on page 74.
Many features of the GPS III+ are menu driven. Each of the main pages has an
options menu, allowing you to custom tailor the corresponding page to your preferences
and/or select special features which specifically relate to that page.
To display the Position Page Options, press MENU (with the Position Page
displayed).
The following options are available:
Average Position— allows you to average position samples over time and save the
averaged result as a waypoint. Averaging reduces the effects of selective availabili-
ty on position error and results in a more accurate position reading.
To average position samples and save the result as a waypoint:
1. Highlight ‘Average Position’ and press ENTER. The Average Position Page will appear.
Observe the ‘Estimated Accuracy’ and ‘Measurement Count’ fields.
2. When the ‘Estimated Accuracy’ and/or ‘Measurement Count’ figures reach the desired
value(s), highlight ‘Save’ and press ENTER. (To cancel the averaging function, highlight
‘Discard’ and press ENTER.)
3. The New Waypoint Page appears with a three-digit number assigned as a name
for the new waypoint. To save the waypoint with this name, highlight ‘Done’ and
press ENTER. Or,
4. To change the waypoint name, highlight the waypoint name field and press ENTER.
Use the rocker keypad to enter a new name for this waypoint and press ENTER when
finished. Highlight ‘Done’ and press ENTER to save the waypoint.
The Position Page Options
allow you to average position
samples and save the result as
a waypoint, change data fields
or restore factory defaults.
When averaging positions to
create a waypoint, observe
the ‘Estimated Accuracy’ and
‘Measurement Count’ figures.
When they reach the desired
value(s), highlight ‘Save’ and
press ENTER.
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REFERENCE
Position Page Options