
EX5000 Installation Manual
P/N 600-00073 Rev 24
- 38 -
5.5.4 Dual GPS Setup with RS-232
The MFD can interface with two RS-232 GPS units, or with a combination of one RS-232 GPS unit
along with one ARINC 429-capable GPS unit. Connect the MFD ports as appropriate, using Appendix
J:
. Follow the set up instructions in Section 5.5.1and Section 5.5.3.
5.5.5 GPS/FMS Communications Check (Messages)
After the MFD has been restarted, any of the following messages may appear in the main viewing
screen or in the message bar and Aux or Setup Page.
Table 15: GPS/FMS Communications Messages
Message
Meaning/Action
Action
Nav Source: Is Not Communicating No RS-232 or ARINC 429 GPS data is
being received.
Check wiring and COM port setting.
Nav Source: Data is Not Valid
Data is being received from the external
GPS. However, insufficient information
is available to determine position.
Aircraft could be in the hanger or the
GPS may not have determined its “fix”
or location.
Nav Source: Data is Valid
The MFD is receiving valid position data
from the GPS/FMS.
—
Nav Source: Data Format Error
Data is being received, however the
MFD does not recognize the data as the
format selected.
May indicate a baud rate or receiver
type error.
Nav Source: No Port selected
The RS232 port setting in the GPS
setup dialog is set to NONE.
To correct this, choose the port to
which the GPS is connected, typically
RS232 1.
Nav Source: Reconnecting
This message is displayed when data
between the MFD and the GPS is being
synchronized.
—
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.
—
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