Garmin G3X Touch Pilot's Manual page 283

Obstacles are represented on the synthetic vision display by standard two-
dimensional tower symbols found on the Inset Map (GDU 46X Only) and Navigation
Map. Obstacle symbols appear in the perspective view with relative height above
terrain and distance from the aircraft. Unlike the Inset Map and Navigation Map
display, obstacles on the synthetic vision display do not change colors to warn of
potential conflict with the aircraft's flight path until the obstacle is associated with an
actual terrain alert. Obstacles greater than 1000 feet below the aircraft altitude are
not shown. Obstacles are shown behind the airspeed and altitude displays.
Arrows indicate the
obstacle is outside the
Synthetic Vision field
of view.
During unusual attitude conditions or when the terrain gradient is great enough
to completely fill the display, a brown (earth) or blue (sky) colored bar at the top or
bottom of the screen is displayed to prevent the pilot from losing sight of the horizon.
Blue Sky Bar with Full Display Terrain
190-01754-00 Rev. L
Obstacle Outside the Synthetic Vision Field of View
Synthetic Vision Obstacle Alerts
Garmin G3X Touch Pilot's Guide
Additional Features
Blue Band
Terrain
Completely
Fills Display
263