Garmin G300 Pilot’s Guide 190-00921-00 Rev. E158Hazard AvoidanceSystemOverviewFlightInstrumentsEISCOMInterfaceGPSNavigationFlightPlanningHazardAvoidanceAdditionalFeaturesIntegratedAutopilotAnnun/AlertsAppendixIndexUnlightedObstacleLighted Obstacle PotentialImpactPointsObstacleLocation< 1000’AGL> 1000’AGL< 1000’AGL> 1000’AGLWARNING: Redobstacle is above orwithin 100’ belowcurrent aircraftaltitudeCAUTION: Yellowobstacle is between100’ and 1000’(default) belowcurrent aircraftaltitudeTerrain Obstacle Colors and SymbologyTERRAIN SETTINGSUse the terrain settings to set levels for terrain alerts as well as obstacles inor near your flight path.• Caution Elevation—The G300 will provide an alert if the terrain or obstacle iswithin the default Caution Elevation or user-defined Caution Elevation.• Look Ahead Time—Determines the maximum time when an alert annunciationoccurs. For example, if 120 seconds is selected, the G300 provides an alert upto 120 seconds before you reach the terrain or obstacle.• Alert Sensitivity—The three Alert Sensitivity settings (Terrain, Obstacle, andDescent Rate) determine what level of alerts are annunciated. The G300defaults to ‘High’ sensitivity, which annunciates all red and yellow alerts atthe time set in Look Ahead Time. ‘Medium’ sensitivity annunciates all ofthe red and the highest priority of yellow alerts. ‘Low’ only annunciates redalerts. ‘Off’ disables the alert.
