Garmin aera 660 Pilot’s Guide190-02017-20 Rev. A25OverviewOverview Navigation Flight Planning Hazard Avoidance Additional Features Appendices IndexCHART COLOR MODEAdjusting the chart color mode:1) From the Main Menu, touch Tools > Setup > Display.2) Touch the 'Chart Color Mode' Data Option Button, and touch the desiredoption from the list (Auto, Day, or Night).ENABLING SCREENSHOTSEnabling/disabling screenshots:1) From the Main Menu, touch Tools > Setup > Display.2) Touch On or Off in the 'Screenshot' field. An SD card is required.AIRCRAFT POSITIONShowing/hiding the aircraft position:1) From the Main Menu, touch Tools > Setup > Display.2) Touch Show or Hide in the 'Aircraft Position' field.SOUNDSound is broken down into ‘Master’, ‘Alert’, and ‘Message’. 'Master’ controls ALLsound. ‘Alerts’ and ‘Message’ are a percentage of the ‘Master’ sound. ‘Alerts’ refersto navigation phrases (e.g. "Pull Up"). The Terrain Alerts and Key Tones can also betoggled enabled or disabled.Sound Setup