Installation manual

Installation Manual
GPS/FMS Navigators Setup P/N 600-00175-000 Rev 04
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5.5.6 GPS/FMS Installation-Specific Issues
● Garmin Installation—Some Garmin units provide two RS-232 formats for GPS data, “aviation”
and “plotting.” “Aviation” format provides a “King” format 9600 baud output at a higher repetition
rate and is the preferred RS-232 output. Consult the specific Garmin GPS installation manual for
full details.
● Garmin GNS480 Installations—Garmin GNS480 units should be wired and configured for RS-
232 instead of Arinc 429 since the GNS480 does not output all of the necessary Arinc 429 labels.
● Northstar Installations—Many Northstar units have a hidden setup screen to change
configuration parameters to make it difficult to change in flight. See the Northstar installation
manual for the specific codes to open the setup screen.
● Trimble 2000A Installations—This unit has a hidden setup screen documented in the installation
manual to change configuration parameters to make it difficult to change in flight. See the Trimble
Installation manual for the specific codes to open the setup screen.
Nav Source: Can't Open Port Another device is configured for the
same port.
Check the Setup page for all devices.
Typically the GPS/FMS is configured
for Port1 (for RS-232) or ARINC1 (for
ARINC 429). If a second GPS/FMS is
being used it is configured for Port2 or
ARINC2.
Heading Data is Not Valid Heading data is no longer available
from the GPS/FMS.
Will only appear if the GPS/FMS is
being used as your heading source.
Heading Data is Valid Heading data has been restored. —
!
Trimble units have been observed to sometimes lose configuration when the aircraft
battery is discharged
Table 13: GPS/FMS Communications Messages (Continued)
Message Meaning/Action Action