Pilot's Guide

2-30
Garmin G500H Pilot’s Guide
190-01150-02 Rev. F
Foreword
Sec 1
System
Sec 2
PFD
Sec 3
MFD
Sec 4
Hazard
Avoidance
Sec 5
Additional
Features
Sec 6
Annun.
& Alerts
Sec 7
Symbols
Sec 8
GlossaryAppendix A
Appendix B
Index
NOTE: Not all Radar Altimeters have the TEST function.
1) Turn the large MFD knob to Aux mode and then turn the small MFD knob to
the System Setup page.
2) Press the RA TEST key . "RA TEST" will be annunciated above the Radar
Altimeter value. The Radar Altimeter value will show a certain number to
indicate that communication is taking place between the Radar Altimeter and
the GDU. See your Radar Altimeter documentation for the appropriate value.
Figure 2-42 Radar Altimeter Test Annunciation
3) Press the RA TEST key again to stop the self-test .
4) If the unit fails the self-test, the RA value will not match the expected value. The
"RA FAIL" annunciation will appear on the PFD when the GDU is not receiving
any Radar Altimeter data. "RA FAIL" is not related to the self-test.
Figure 2-43 Radar Altimeter Failure Annunciation
Radar Altimeter Only Configuration
There is an installer configuration option for the type of minimums alerting
that is presented to the pilot. When this option is set by the installer to RA ONLY
then the following differences are seen by the pilot:
1) The minimums alerting value is defaulted ON with a setting of 200 feet.
2) BARO MINIMUMS cannot be selected by the pilot, only RAD ALT mins.
3) The callout upon reaching the selected altitude is a unique tone rather than the
aural “minimums, minimums” callout.
4) The altitude required to arm the alerting is 50 feet above the selected altitude
instead of 150 feet.
5) The display radar altitude will always be green when the aircraft is ON GROUND
as indicated by the air ground input.