Garmin GPS III Plus - Manual (Page 16)

This usually provides a position fix in 1 minute. You’ll know you have a fix when
the unit automatically transitions from the Satellite Page to the Map Page, unless you
have manually changed pages (shown left). Your receiver is now ready to use!
To turn the unit off:
1. Press and hold the red power key for 1 second.
Troubleshooting
If you have trouble initializing or getting a position fix, check the following:
• Does the receiver have a clear view of the sky?
If there are large buildings or mountains, or if there is heavy tree cover, the receiver
may not be receiving enough satellite signals to calculate a fix. Also, if you’re using
the GPS III+ on a car dash, make sure the unit is placed so that it has the clearest
possible view of the sky. Your GPS will only be able to detect satellites that it can
“see” through your vehicle’s windshield. Depending on the slope of your dash or
the overall surface area of the window, it may be necessary to mount an external
antenna on your vehicle’s roof or trunk in order to give the unit a better view of the
sky. (Contact your local GARMIN dealer or GARMIN Sales and inquire about the
GA 26C low-profile remote antenna, part number 010-10052-04.)
• Have you selected the right area when initializing?
Check for the correct approximate position on the Map Page (press PAGE
until the Map Page appears; see pages 7 and 10), or reselect your approximate
location to restart the initialization.
• Have you moved more than 500 miles from the last calculated position
with the receiver off?
Reinitialize the receiver by selecting your approximate position on the map, or
select ‘AutoLocate’ from the Satellite Status Page options (see page 29).
Once the GPS III+ has a posi-
tion fix, it will automatically
transition from the Satellite
Status Page to the Map Page.
If powering the III+ with
external power, and the exter-
nal power is lost, the unit will
automatically turn off after 30
seconds.
6
GETTING STARTED
Initialization