Garmin G3X Touch Pilot's Manual page 361

Message
AHRS magnetic anomaly - check
mag installation
AHRS magnetic field model
invalid
AHRS IGRF data out of date
Network communication error
[LRU name] Network address
changed
[GDU name] software version
mismatch
[GDU name] obstacle database
mismatch
[GDU name] obstacle database
missing
[GDU name] terrain database
mismatch
190-02472-00 Rev. D
Comments
An anomaly has been detected in the
magnetometer data. Heading may or may not
be flagged invalid.
The data being communicated by the GMU
to the specified AHRS is invalid. Heading is
flagged invalid and the AHRS will use GPS for
backup mode operation.
The AHRS Earth magnetic field model is out
of date. Update magnetic field model when
practical by updating the GDU to the latest
software version.
Two or more LRUs may have the same network
address. Check wiring and configuration.
One or more LRUs on the CAN bus have an
indeterminate network address. This likely
indicates a wiring issue or an intermittent
connector pin. If the problem persists, the G3X
Touch system should be serviced.
The PFD and MFD do not have the same
software version installed. Display crosstalk is
disabled. Ensure all installed display software
matches.
The PFD and MFD have different obstacle
database versions installed. Install the correct
obstacle database on all displays for proper
terrain/obstacle alerting.
The obstacle database is missing. Install the
correct obstacle database on all displays for
proper terrain/obstacle alerting.
The PFD and MFD have different terrain
database versions installed. Install the correct
terrain database on all displays for proper
terrain/obstacle alerting.
Garmin G3X Touch ™ Pilot's Guide for Certified Aircraft
Annunciations & Alerts
339