G1000 / GFC 700 System Maintenance Manual - 300/B300 Series King Air
Page 3-17
190-00716-01
Revision 1
The GRS 77 and GDC 7400 configuration modules function differently than the rest of the system. The
GDC 7400’s configuration file is loaded directly to GDC internal memory. A copy of the file is stored in
the GDC configuration module.
The GRS 77 configuration module does not store any configuration settings. Instead, it stores calibration
data recorded during installation calibration procedures.
GRS 77 Config Module
(located in GRS backshell connector)
Stores a copy of AHRS / magnetometer
calibration values that are recorded upon
completion of post-installation calibration
procedures.
GDC 7400 Config Module
(located in GDC backshell connector)
Stores a copy of the GDC 7400
configuration file
GRS 77 AHRS
The GRS stores calibration data internally.
The GRS 77 also stores factory calibration data internally.
Should internal memory or the configuration module fail, AHRS
output data flags invalid.
GRS Internal Memory
Contains internal sensor calibration data
that is not installation-specific. Data is
stored from factory calibrations.
GDC 7400
The GDC 7400 stores GDC configuration file internally.
The GDC 7400 also stores factory calibration data internally.
Should internal memory or the configuration module fail, loss
of some or all air data outputs will result.
GDC Internal Memory
Contains internal sensor calibration data
that is not installation-specific. Data is
stored from factory calibrations.
Figure 3-15, GRS/GDC Configuration Settings Storage
Summary of Contents for Cessna Caravan G1000
Page 2: ...This page intentionally left blank...
Page 89: ......
