Garmin GNS 480 Installation Manaul page 62

Installation Procedures
2.8.7.10 Terminal Mode Annunciation
P5-67 Terminal Mode Annc
The Terminal Mode Annc output is grounded when not in Approach mode, but navigating within 30 nmi
of the departure or arrival airport, or on a SID or STAR.
If an external annunciator is used for terminal mode annunciation, it is recommended that the terminal
mode annunciator be labeled "TERM" in green text.
2.8.7.11 Altitude Alert Annunciation
P5-69 Altitude Alert Annc
The Altitude Alert Annc output is grounded when all of the following conditions are true:
•
performing a GPS/WAAS approach with vertical guidance;
•
on the approach inbound to the final approach fix (FAF); and
•
ownship WAAS altitude more than (50 meters plus the vertical protection limit (VPL)) below the
altitude at the FAF
If an external annunciator is used for altitude alert annunciation, it is recommended that the altitude alert
annunciator be labeled "ALT" in amber text.
2-30 560-0982-01 Rev L GNS 480 (CNX80) Installation Manual