2-14Garmin G500 Pilot’s Guide 190-01102-02 Rev. EForewordSec 1SystemSec 2PFDSec 3MFDSec 4HazardAvoidanceSec 5AdditionalFeaturesSec 6Annun.& AlertsSec 7SymbolsSec 8GlossaryAppendix AAppendix BIndex2.4.2 Altitude AlertingThe Altitude Alerting function provides the pilot with visual and auralalerts (if interfaced to an audio panel) when approaching the Selected Altitude.Whenever the Selected Altitude is changed, the Altitude Alerter is reset.NOTE:The Altitude Alerter function may be disabled in some installations.When the Altitude Alerter is disabled, pressing the ALT key will result inan "ALT KEY INOP" message.The following occur when approaching the Selected Altitude:• Upon passing through 1000 feet of the Selected Altitude, the SelectedAltitude (shown above the Altimeter) changes to black text on a light bluebackground, and flashes for five seconds. An audio alert may be generated,if configured.• When the aircraft passes within 200 feet of the Selected Altitude, the SelectedAltitude changes to light blue text on a black background and flashes forfive seconds and an aural tone may be generated, if configured.• After reaching the Selected Altitude, if the pilot flies outside the deviationband (beyond ±200 feet of the Selected Altitude), the Selected Altitudechanges to yellow text on a black background, flashes for five seconds, andan aural tone is generated.Within 1000 ft Within 200 ft Deviation of ±200 ftFigure 2-21 Altitude Alerting Visual AnnunciationsNOTE:The aural tone when approaching the selected altitude may beconfigured at installation for either 200 feet or 1000 feet. The tone whendeviating from the selected altitude always occurs at 200 feet.
