Garmin G3X Pilots Guide - Page 211
Terrain
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System Overview Hazard Avoidance a) Press the MENU Key. b) Select 'Animate Weather' and press the ENT Key to begin animation. 4) To stop animation, deselect the ANIMATE Softkey. Or: Press the MENU Key, turn or move the FMS Joystick to select 'Stop Animation', and press the ENT Key. 7.2 TERRAIN Flight Instruments EIS CNS Interface GPS Navigation Flight Planning Hazard Avoidance Additional Features WARNING: Do not use Terrain information for primary terrain avoidance. Terrain information is intended only to enhance situational awareness. NOTE: Terrain data is not displayed when the aircraft latitude is greater than 75° North or 60° South. NOTE: Terrain depicted in the Profile View is always "ahead" of the aircraft, and will change as ground track changes. The Terrain Page displays altitudes of terrain and obstructions relative to the aircraft position and altitude with reference to a database that may contain inaccuracies. Terrain and obstructions are shown only if they are in the database. Terrain and obstacle information should be used as an aid to situational awareness. They should never be used to navigate or maneuver around terrain. Note that all obstructions may not be available in the terrain and obstacle database. No terrain and obstacle information is shown without a valid 3-D GPS position. The G3X GPS receiver provides the horizontal position and altitude of the aircraft. Aircraft GPS altitude is derived from satellite position. GPS altitude is then converted to a mean sea level (MSL)-based altitude (GPS-MSL altitude) and is used to determine terrain and obstacle proximity. GPS-MSL altitude accuracy is affected by satellite geometry, but is not subject to variations in pressure and temperature that normally affect pressure altitude sensors. GPS-MSL altitude does not require local altimeter settings to determine MSL altitude. It is a widely-used MSL altitude source. 190-01115-00 Rev. F Garmin G3X Pilot's Guide 193 Integrated Autopilot Annun/Alerts Appendix Index