Garmin G3X Pilots Guide - Page 87

System Overview Flight Instruments Flight Instruments VERTICAL SPEED INDICATOR (VSI) The Vertical Speed Indicator displays the aircraft vertical speed using a non-moving tape labeled at 500, 1000 and 2000 fpm with minor tick marks every 100 feet up to 1000 fpm. The current vertical speed is displayed using a white arrow along the tape. Selected Altitude Altimeter Current Vertical Speed Indicated Altitude EIS CNS Interface GPS Navigation Flight Planning Hazard Avoidance Additional Features Integrated Autopilot Annun/Alerts Vertical Speed Indicator VERTICAL DEVIATION INDICATOR AND VNAV INDICATOR NOTE: An external navigator (i.e., SL30 Nav/Comm Transceiver and/or the GTN or GNS Series Units) must be configured to receive glideslope and/or glidepath vertical deviation indications. GLIDESLOPE - ILS SOURCE The Vertical Deviation (Glideslope) Indicator (VDI) appears to the left of the altimeter whenever 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 conventional indicator. If a localizer frequency is tuned and there is no glideslope signal, "NO GS" is annunciated. 190-01115-00 Rev. F Garmin G3X Pilot's Guide 69 Appendix Index