58GPSmap 76CSGPS NavigationInterface SetupInterface SetupThe Interface Setup Page allows you to control the input/outputformat used when connecting your unit to a computer, external NMEAdevices, a DGPS beacon receiver, etc. using a USB or Serial Port CableThe following settings are available:GARMIN - The proprietary format used to exchange waypoint, route,track log and MapSource data with a PC.GARMIN DGPS - The proprietary format used with Garmin dif-ferential beacon receivers. Provides for tuning of the beacon receiverdirectly from the GPSmap 76CS.NMEA In/NMEA Out - Supports input and output of standardNMEA 0183 version 3.01 data.Text Out - Allows ASCII text output of location and velocity informa-tion. No input.Interface SetupPageData FormatOptionsDisplay Setup Display SetupThe Display Setup Page allows you to select a screen display colorscheme for day and night viewing. You can set the backlight timeout andthe level of brightness which can significantly save on battery power.To change a System Setup feature:1. Use the ROCKER and ENTER keys to select the feature fi eldand setup options menus.2. With an option for a feature fi eld highlighted, press ENTERto select. Use the ROCKER key to slide the brightness levelselector.Color SchemeOptionsBacklightTimeoutOptions Display Setup PageLevelSelector