Unit Installation - Garmin G3X Installation Manual

Table 7-2 Contents of GDU 45X Connector Kit (011-01921-00)*
Sub-Assy, bkshl w/Hdw, Jackscrew
Conn, Rcpt, D-Sub, Crimp Socket
Contact, Sckt, D-Sub, Crimp, Size 20
7.3.1.1 GDU 45X PFD Configuration Module
The GDU 45X 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 (the GSU 25 does not
have a configuration module). This allows critical data to be retained with the airframe even if the PFD 1
display is replaced.
7.3.2 Additional Equipment Required
A 3/32" hex drive tool is required to secure the GDU 45X to the panel as described in
Installation and shown in

7.4 Unit Installation

Fabrication of a wiring harness is required. Sound mechanical and electrical methods and practices are
recommended for installation of the GDU 45X. Refer to
Section 23.4 for pinouts.
Connector kits include backshell assemblies. Garmin's backshell connectors give the installer the ability
to quickly and easily terminate shield grounds at the backshell housing. The instructions needed to
assemble the backshell connector w/Shield Block grounding system are located in
190-01115-01
Rev. AA
Item
Figure 7-4.
GDU 45X GDU 45X
SIGNAL GROUND SIGNAL GROUND
Figure 7-2 Grounded Connector Shell
G3X/G3X Touch Installation Manual - GDU 45X Installation
Garmin P/N
011-01855-04
330-00625-50
336-00094-00
Section 2.3 for wiring considerations, and to
P4502 P4502
35 35
GARMIN SHIELD GARMIN SHIELD
BLOCK GROUND BLOCK GROUND
Quantity
1
1
20
Section 7.6.1 Unit
Section 22.
Page 7-3