Garmin G3X Touch Pilot’s Guide190-01754-00 Rev. E265AFCSSystemOverviewFlightInstruments EISCNSInterfaceGPSNavigationFlightPlanningHazardAvoidanceAdditionalFeatures AFCS Annun/Alerts Appendix IndexCHANGING THE ALTITUDE REFERENCEWhen operating in Altitude Hold Mode, the Altitude Reference can beadjusted in the following ways:• The Altitude Reference can be adjusted up or down in 10-footincrements by Nose Up or Nose Down or rolling the NOSE UP/DNWheel (GMC 305). Using this method, up to 200 feet of altitudechange can be commanded. To change the Altitude Reference bymore the 200 feet, use the CWS button (if equipped) as describedbelow, or climb/descend using another vertical mode (PIT, VS) tocapture the desired Selected Altitude.• If the aircraft is equipped with a CWS Button, pressing the CWS Buttonallows the aircraft to be hand-flown to a new Altitude Reference.When the CWS Button is released at the desired altitude, the newaltitude is established as the Altitude Reference.Altitude Hold ModeAltitude HoldMode Active AltitudeReferenceVERTICAL SPEED MODE (VS)In Vertical Speed Mode, the flight director acquires and maintains a Vertical SpeedReference. Current aircraft vertical speed (to the nearest 100 fpm) becomes the VerticalSpeed Reference at the moment of Vertical Speed Mode activation. This mode may beused for climb or descent to the Selected Altitude (shown above the Altimeter) sinceSelected Altitude Capture Mode is automatically armed when Vertical Speed Mode isselected.When Vertical Speed Mode is activated by pressing the VS Key (GMC 305) ortouching VS, ‘VS’ is annunciated in green in the Autopilot Status Box along with theVertical Speed Reference. The Vertical Speed Reference is also displayed above theVertical Speed Indicator. A Vertical Speed Reference Bug corresponding to the VerticalSpeed Reference is shown on the indicator.
