Post Installation Calibration Procedures - Garmin G3X Installation Manual
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Also See for G3X:
- Installation manual (849 pages) ,
- Pilot's manual (470 pages) ,
- Maintenance manual (134 pages)
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The ADAHRS may not be able to provide valid heading/pitch/roll data for the following reasons:
1. If an "ADAHRS not Calibrated" message is displayed, the GSU 73 configuration module in the
harness (that stores the installation configuration parameters) is either not present or not wired
properly. In this case, either:
•
The GSU 73 configuration module is inoperative.
OR
•
The external installation configuration parameters are not calibrated and the ADAHRS and/
or Magnetometer calibration needs to be performed. If either of these is not calibrated, the
ADAHRS heading, pitch, and roll may all be flagged as invalid. Calibrate the unit to the
installation.
2. There is not sufficient or valid sensor information being provided to the ADAHRS for it to
compute valid attitude information.
33.7 Post Installation Calibration Procedures
The calibration procedures in
Section 32.4.5.3
and
Section 32.4.5.5
troubleshooting.
Table 31-2
GDU 45X/46X systems) list the status box requirements for each calibration procedure. The
Magnetometer Interference Test may be used to determine if the location of the GMU 22 is susceptible to
magnetic interference. The Engine Run-Up Vibration Test can be used to determine if the mounting of the
ADAHRS and GMU 22 are susceptible to aircraft vibration.
NOTE
Passing the Engine Run-Up Vibration test does not remove the requirement to rigidly
mount the ADAHRS to the aircraft primary structure. The Engine Run-Up Vibration Test
is intended to help discover mounting issues but successful completion of the test does not
validate the mounting of the ADAHRS and GMU, and does not account for all possible
vibration profiles that may be encountered during normal aircraft operation
190-01115-01
Rev. AA
Section 31.4.3.3
and
Section 31.4.3.5
(for GDU 45X/46X systems) may be performed during
and
Table 31-3
(for GDU 37X systems) or
G3X/G3X Touch Installation Manual - Troubleshooting
(for GDU 37X systems) or
Table 32-2
and
Table 32-3
(for
Page 33-7
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Troubleshooting
