2-2GTN 725/750 Pilot’s Guide 190-01007-03 Rev. CForewordGettingStartedAudio &Xpdr CtrlCom/NavFPLDirect-ToProcChartsWpt InfoMapTrafflcTerrainWeatherNearestServices/MusicUtilitiesSystemMessagesSymbolsAppendixIndexActive XPDRXPDR 1XPDR 2ModeStandbyGroundOnAltitude ReportingVFR1200IdentFlight IDFigure 2-2 XPDR Functional Diagram2.1.1 Select Transponder1. Touch the Active XPDR key to activate the desired transponderby stepping through the available transponders.Active TransponderFigure 2-3 Active Transponder Indication2. The active transponder will be shown on the key.2.1.2 IDENT1. Touch the IDENT key once to reply with an identifying squawkcode.2. The IDENT key will show a green “ID” in the top right cornerof the key to indicate active Ident.2.1.3 StandbyTouch the Standby key to place the transponder into Standbymode. The transponder will still be powered, but will nottransmit information. The active transponder indication andIdent annunciation will be grayed to show they are disabled.Active XPDR and IDENT DisabledTransponder Operation "Standby" ModeFigure 2-4 Transponder Mode "Standby" Indication
