Garmin G3X Pilots Guide - Page 212
Synthetic Vision, Terrain Information, Enabling/Disabling Terrain Shading on the Map
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Overview System Instruments Flight EIS CNS Interface GPS Navigation Flight Planning Hazard Avoidance Terrain and obstacle databases are referenced to MSL. Using the GPS position and altitude, the Terrain feature portrays a 2-D picture of the surrounding terrain and obstacles relative to the position and altitude of the aircraft. GPS position and GPSMSL altitude are used to calculate and predict the aircraft's flight path in relation to the surrounding terrain and obstacles. In this way, the pilot can view predicted dangerous terrain and obstacle conditions. Alert windows appear on all pages (except the Terrain (TER) Page) to inform the pilot of proximity to the terrain and obstacles, as well as an unsafe descent rate. These alerts depend on user-defined parameters in the Terrain Page setup. SYNTHETIC VISION Terrain is integrated within Synthetic Vision (when active) to provide land contours (colors are consistent with those of the topographical map display), large water features, towers, obstacles over 200' AGL, as well as visual and auditory alerts to indicate the presence of terrain and obstacle threats relevant to the projected flight path. Synthetic Vision terrain information is displayed in red and yellow shading on the PFD. Refer to section 8.1 (Synthetic Vision) for more information. TERRAIN INFORMATION The areas of the terrain shaded red are predicted to be within 100 feet below or above the aircraft. The yellow terrain areas are between the user-defined Caution Elevation and 100 feet below the aircraft. By default, the Caution Elevation is 1,000 feet; therefore, the areas in yellow are between 1,000 feet and 100 feet below the aircraft. The black areas are further than the Caution Elevation. A projected point of impact is marked with an "X" symbol. Enabling/Disabling Terrain Shading on the Map Page: From the Map Page with the VFR Map displayed, press the TERRAIN Softkey. Or: 1) From the Map Page, press the MENU Key. 2) Turn or move the FMS Joystick to highlight 'Set Up Map', and press the ENT Key. Hazard Avoidance Additional Features Integrated Autopilot Annun/Alerts Appendix Index 194 Garmin G3X Pilot's Guide 190-01115-00 Rev. F