Garmin G500 Pilot's Manual page 80

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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 soft key
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.
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 2-48 Radar Altimeter Failure Annunciation
Radar Altimeter Configurations
Depending on the installation, the pilot will have one of the following
options: BARO or RAD ALT minimums altitude alert (pilot selectable).
• The minimums alerting value is defaulted OFF with a setting of 0 feet.
• The pilot can select alerts ON or OFF and can select the alert altitude
based on either barometric or radar altitude.
• The alert upon descending through the selected altitude is the aural
"minimums, minimums" callout.
• The altitude required to arm the alerting is 150 feet above the selected
altitude.
2-34
"RA TEST" will be annunciated above the Radar
.
Figure 2-47 Radar Altimeter Test Annunciation
Garmin G500/G600 Pilot's Guide
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190-00601-02 Rev. J