Garmin GPS III Plus Owner's Manual - Page 16

GETTING STARTED Initialization Once the GPS III+ has a position fix, it will automatically transition from the Satellite Status Page to the Map Page. If powering the III+ with external power, and the external power is lost, the unit will automatically turn off after 30 seconds. 6 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).