Garmin GPSMAP 78s Owner's Manual - Page 41
Maximizing Battery Life, Using the Battery Save Option, Decreasing the Backlight, Timeout
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Radio frequency/ protocol GPS accuracy DGPS Altimeter Compass 2.4 GHz/ANT+ wireless communications protocol < 33 ft. (10 m) 95% typical use GPS is subject to accuracy degradation to 100 m 2DRMS under the U.S. DoD imposed Selective Availability (SA) Program when activated. From 10 to 16 ft. (from 3 to 5 m) 95% typical (WAAS accuracy in North America) The barometric altimeter is available only with the GPSMAP 78S and GPSMAP 78Sc. The three-axis compass is available only with the GPSMAP 78S and GPSMAP 78Sc. Appendix Maximizing Battery Life Using the Battery Save Option Use the battery save option to save battery power and prolong battery life. From the main menu, select Setup > Display > Battery Save > On. Decreasing the Backlight Extensive use of screen backlighting can significantly reduce battery life. You can adjust the backlight brightness and decrease the backlight timeout to maximize battery power. 1. Quickly press to open the backlight status page. 2. Use the Rocker to adjust the brightness. Adjusting the Backlight Timeout From the main menu, select Setup > Display > Backlight Timeout. GPSMAP 78 Series Owner's Manual 37