10-37190-01007-03 Rev. C GTN 725/750 Pilot’s GuideForewordGettingStartedAudio &Xpdr CtrlCom/NavFPLDirect-ToProcChartsWpt InfoMapTrafflcTerrainWeatherNearestServices/MusicUtilitiesSystemMessagesSymbolsAppendixIndex4. Touch the Enter key to accept the selected value. The selectedvalue will be shown in the Field Elevation key.5. Touch the Use DEST APT key to automatically use the fieldelevation of the destination airport of the active flight planfor traffic reporting.NOTE: Activating the Use DEST APT feature automatically uses theelevation for the current destination airport for the TCAD. If no destinationairport is present in the GTN system, the TCAD will not receive a fieldelevation and therefore not automatically enter approach mode.En Route, Standard, or Terminal Shield Type1. While viewing the TCAD Control menu, touch the Shield Typekey and touch the desired Shield Type: Enroute, Standard, orTerminal.Touch To Shield RangeTouch To ManuallySet Shield HeightTouch To SelectShield Type:Approach orStandardFigure 10-33 TCAD 9900BX Shield Setup for En Route, Standard, and Terminal2. Touch the Shield Height key and use the keypad to selectthe Shield Height value. The selected value will be shown inthe Shield Range key.3. Touch the Shield Range key and use the keypad to selectthe Shield Range value. The selected value will be shown inthe Shield Range key.10.8.3.3 Approach Mode1. While viewing the Traffic menu, touch the Approach key toactivate Approach Mode TCAD traffic.2. Touching the Approach key toggles Approach Mode betweenSet, Armed, or Active.10.8.3.4 Ground Mode1. While viewing the Traffic menu, touch the Ground key toactivate Ground Mode TCAD traffic.2. Touching the Ground key toggles Ground Mode between Onand Off.