Astro Dog Tracking System Owner’s ManualGetting StartedTurning the Astro 220 OnTo turn the Astro 220 on, press and hold the Powerkey.The first time you turn the Astro 220 on, a messageappears followed by a prompt. Thereafter, when you turnthe Astro 220 on, the Garmin Logo appears, followed bythe Dog Tracker page.Garmin Logo Dog Tracker PageTo adjust the backlight level:1. Press and quickly release the Power key.2. Press the Rocker up arrow or down arrow to adjustthe brightness levels. Or, press and quickly releasethe Power key to cycle through the brightnesslevels.3. Press ENTER to select a brightness level.See page 45 to change the display colors and backlighttimeout.Charging the DC 30Fully charge the DC 30 before using it on a hunt. DC 30charging temperature range is 32°F-113°F (0°C-45°C).To charge the DC 30:1. Connect the vehicle power cable or the AC adapter toan appropriate electrical source.2. Slide the connector into the battery charging port onthe side of the DC 30.Blue LEDBattery charging port