190-00356-03 Rev. D AFMS, Garmin GNS 4XXW GPS/SBAS SystemPage 4 of 19 FAA APPROVEDSection 1. GENERAL1.1 Garmin 4XXW Series GPS/WAAS Nav ComThe Garmin GNS Series GPS/WAAS Navigator is a panel-mounted product thatcontains a GPS/WAAS receiver for GPS approved primary navigation underTSO-C146a, (plus optional VHF Com and VHF Nav radios) in an integrated unitwith a moving map and color display. The 4XXW Series unit features agraphical display which may also be used to depict traffic, weather, or terraindata.The navigation functions are operated by dedicated keys and graphical menuswhich are controlled by the buttons and the dual concentric rotary knob along thebottom and right side of the display.Optional VHF Com and VHF Nav radio functions are controlled via dedicatedbuttons and knobs on the left side of the display and adjacent to frequencies theyare controlling.OBSKeyPower and ComVolume/SquelchPhotocellfor Auto-Dimming Graphic MovingMap Display andNavigation InfoProcedure KeyRange KeysEnter KeyDirect-To KeyMenu KeyFunction andPage NumberClear KeyComm FreqFlip/FlopNav RadioFlip/FlopNav RadioVolumeSmall KnobCom/VLOCFreq (kHz)Com FreqWindowSmall Knob(Cursor - Pressto activate)Large KnobDataCardsFlight PlanKeyMountingScrew MessageKeyCDIKeyNavigationSource: GPS,VLOC, orGPS-PTKNav FreqWindowLarge KnobCom/VLOCFreq (MHz) Terrain, FlightPhase, andGPS IntegrityAnnunciatorFigure 1 - 430W Series Control and Display Layout