Altitude Alerting; Changing Barometric Setting - Garmin G500 Pilot's Manual

2.4.2

Altitude Alerting

The Altitude Alerting function provides the pilot with visual and aural
alerts (if interfaced to an audio panel) when approaching the Selected Altitude.
Whenever the Selected Altitude is changed, the Altitude Alerter is reset. The
Altitude Alerter is independent of any autopilot installed in the aircraft. The
following occur when approaching the Selected Altitude:
• Upon passing through 1000 feet of the Selected Altitude, the Selected
Altitude (shown above the Altimeter) changes to black text on a light blue
background, flashes for five seconds.
• When the aircraft passes within 200 feet of the Selected Altitude, the Selected
Altitude changes to light blue text on a black background and flashes for
five seconds and an aural tone is generated.
• After reaching the Selected Altitude, if the pilot flies outside the deviation
band (beyond ±200 feet of the Selected Altitude), the Selected Altitude
changes to yellow text on a black background, flashes for five seconds, and
an aural tone is generated.
Within 1000 ft
Figure 2-18 Altitude Alerting Visual Annunciations
2.4.3

Changing Barometric Setting

The Barometric Setting affects the altitude values shown on the unit.
Barometric pressure units may be displayed as either inches (in) or hectopascals
(hpa). See System Display Units in Section 3 for more detail.
1) Press the BARO key to activate Baro mode.
2) Turn the PFD knob to increase or decrease the altimeter setting. OR
3) Press the PFD knob while in Baro mode to toggle between Standard Pressure
(29.92 in) and the currently selected barometric setting.
2-10
Within 200 ft
PFD Knob Selected
Baro Setting
Figure 2-19 Barometric Setting
Garmin G500 Pilot's Guide
Deviation of ±200 ft
Baro Setting shown
in Altimeter window
190-01102-02 Rev. B