Garmin G3X Pilot’s Guide 190-01115-00 Rev. K80Flight InstrumentsSystemOverviewFlightInstrumentsEISCNSInterfaceGPSNavigationFlightPlanningHazardAvoidanceAdditionalFeaturesAFCSAnnun/AlertsAppendixIndexVERTICAL SPEED INDICATOR (VSI)The Vertical Speed Indicator displays the aircraft vertical speed using a non-movingtape labeled at 500, 1000 and 2000 fpm with minor tick marks every 100 feet up to1000 fpm. The current vertical speed is displayed using a white arrow along the tape.Vertical Speed IndicatorSelected AltitudeCurrent Vertical SpeedAltimeter Indicated AltitudeVERTICAL DEVIATION INDICATOR AND VNAV INDICATORNOTE: An external navigator (i.e., SL30 Nav/Comm Transceiver and/or theGTN or GNS Series Units) must be configured to receive glideslope and/orglidepath vertical deviation indications.GLIDESLOPE - ILS SOURCEThe Vertical Deviation (Glideslope) Indicator (VDI) appears to the left of the altimeterwhenever an ILS frequency is tuned in the active NAV field of an external navigator.A green diamond acts as the VDI Indicator, like a glideslope needle on a conventionalindicator. If a localizer frequency is tuned and there is no glideslope signal, “NO GS”is annunciated.
