190-01115-01
G3X/G3X Touch Installation Manual - LRU Pinouts
Rev. AC
Page 25-24
Configure the GDU 4XX units per the following tables.
A GDU 4XX can be manually placed in reversionary mode by wiring Pin 25 to a two pole switch that
toggles between open and ground. When the switch is open, the display will operate normally. When the
switch is grounded, the display changes to reversionary mode, showing the engine bar at the top of the
display and a split screen PFD and MFD below. Other displays in the system will not be affected by
manually placing a display into reversionary mode.
Do not connect a switch to ground for pins 9 or 10, doing so can cause communication errors.
Grounding pin 42 will place the GDU 4XX in Demo mode, which is for in-store demonstration use only,
never ground pin 42 in an aircraft installation
.
25.4.7
Configuration Module
Connect the configuration module to the PFD1 unit; do not connect a config module to PFD2, MFD1 or
MFD2.
CDU SYSTEM ID
PROGRAM* 1,
P4X02 Pin 10
CDU SYSTEM ID
PROGRAM* 2,
P4X02 Pin 9
GDU Mode
Open
Open
MFD1
Ground
Open
PFD1
Open
Ground
PFD2
Ground
Ground
MFD2
CDU SYSTEM ID
PROGRAM* 3
P4X02 Pin 25
GDU Mode
CDU SYSTEM ID
PROGRAM* 4
P4X02 Pin 42
GDU Mode
Open
Auto Reversionary
Open
Normal Operation
Ground
Forced Reversionary
Ground
Demo Mode
Pin Name
Connector
Pin
I/O
CONFIG MODULE POWER OUT (3.3V, very low current)
P4X02
17
Out
CONFIG MODULE CLOCK
P4X02
33
I/O
CONFIG MODULE GROUND
P4X02
49
--
CONFIG MODULE DATA
P4X02
50
I/O