Unit Installation - Garmin G3X Installation Manual

6.3.1.1 GDU 37X PFD Configuration Module
The GDU 37X PFD 1 display uses a configuration module designated as the master system configuration
module. The master system configuration module stores configuration data identical to the PFD
configuration data stored in the PFD memory. The PFD cross-checks the configuration module data
against internal PFD memory and self-configures to match the master system configuration module. The
PFD also maintains control of other LRUs' configuration and calibration settings except for GSU 73
AHRS calibration settings which are stored in the GSU 73 configuration module. This allows critical data
to be retained with the airframe even if the PFD 1 display is replaced.
6.3.2 Additional Equipment Required
A 3/32" hex drive tool is required to secure the GDU 37X to the panel as described in Section 6.6.1 Unit
Installation.
Figure 6-2 GDU 37X Mounting Accessories
190-01115-01 G3X/G3X Touch Installation Manual - GDU 37X Installation
Rev. AA Page 6-3