190-01115-01 G3X/G3X Touch Installation Manual - GDU 37X Config and Post Install Checkout
Rev. AC
Page 33-9
Table 33-1 describes the calibration procedures accessed from the ADAHRS Calibration Page.
For each Calibration Procedure, Table 33-2 lists the LRUs that require valid calibration data.
Table 33-3 lists the type of valid calibration data required to be output by each LRU for the Calibration
Procedures listed in Table 33-2.
Table 33-1 Post Install Calibration Procedure Summary for ADAHRS Calibration Page
Procedure Name
Procedure Description
Installations Requiring Procedure
Unit Orientation
Configure ADAHRS
installation orientation
Required for all installations
Pitch/Roll Offset
Compensation
Level aircraft
Required for all installations
Engine Run-Up
Vibration Test
Validate vibration
characteristics of installation
Required for all installations
ADAHRS Static
Pressure
Calibration
Altitude re-calibration
Only used when an ADAHRS has failed a periodic
altimeter test
Table 33-2 Data Validity Requirements for ADAHRS Calibration Procedures
ADAHRS Calibration
Procedure
Valid Status Required for
GSU 25 Calibrations
Valid Status Required for
GSU 73 Calibrations
ADAHRS Mounting Orientation
Identification
None
None
Pitch/Roll Offset
None
GPS and Air Data
Engine Run-Up
None
GPS or Air Data
ADAHRS Static Pressure
Calibration
None
None
Table 33-3 Configuration Mode ADAHRS Page Status Boxes
Status Box
Valid Status
ADAHRS
ADAHRS LRU status valid
GPS Data
3D or 3D Differential GPS solution available
Air Data
True Airspeed (TAS) available. NOTE: A valid outside air temperature (OAT)
measurement is required for TAS to be valid.
