Garmin G3X Touch Pilot’s Guide190-01754-00 Rev. A41Flight InstrumentsSystemOverviewFlightInstruments EISCNSInterfaceGPSNavigationFlightPlanningHazardAvoidanceAdditionalFeatures AFCS Annun/Alerts Appendix IndexVERTICAL 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.Vertical Deviation Indicator(Glideslope-ILS Source)VerticalDeviationIndicatorVerticalDeviationSource
