Garmin GNS 480 Installation Manual page 58

Installation Procedures
If an external annunciator is used for back course annunciation, it is recommended that the back course
annunciator be labeled "BC" in amber text.
2.8.7.3 Dead Reckoning Annunciation
P5-60 Dead Reck Annc
The Dead Reck Annc output is grounded whenever the GNS 480 is in dead reckoning mode (i.e.
whenever the GPS position is lost and the last-known groundspeed is > 3kts).
If an external annunciator is used for dead reckoning annunciation, it is recommended that the dead
reckoning annunciator be labeled "DR" in amber text.
2.8.7.4 Approach Annunciation
P5-61 Approach Annunciate
The Approach Annunciate output is grounded when performing approach navigation and approach is
active.
If an external annunciator is used for approach annunciation, it is recommended that the approach
annunciator be labeled "APPR" in green text.
2.8.7.5 Parallel Track Annunciation
P5-62 Parallel Track Annc
The Parallel Track Annc output is grounded whenever the parallel track mode has been selected.
If an external annunciator is used for parallel track annunciation, it is recommended that the parallel track
annunciator be labeled "PTK" in white text.
2.8.7.6 Suspend Annunciation
P5-63 Suspend Annunciate
The Suspend Annunciate output is grounded when automatic sequencing of waypoints in the active flight
plan has been suspended (either manually by the user or automatically by the GNS 480).
If an external annunciator is used for suspend annunciation, it is recommended that the suspend
annunciator be labeled "SUSP" in white text.
2.8.7.7 Message Annunciation
P5-64 Message Annunciate
The Message annunciator flashes when a new status message is available. If a status message has been
acknowledged but is still effective, the Message annunciator illuminates continuously.
If an external annunciator is used for message annunciation, it is recommended that the message
annunciator be labeled "MSG" in white or amber text.
2-28 560-0982-01 Rev A GNS 480 (CNX80) Installation Manual