190-01115-01
G3X/G3X Touch Installation Manual - LRU Pinouts
Rev. AC
Page 25-33
25.5.8
Digital Inputs
GEA 24 digital inputs are capable of sensing either an AC voltage with a peak to peak value of greater than
1 V, or an open collector type digital input. These inputs are configured by the GDU, refer to
(for GDU 37X systems) and
(for GDU 4XX systems)
NOTE
There are 2 Fuel Flow Input Channels (channels 1 & 2) on J243 and 2 Fuel Flow Input
Channels on connector J244. As both channel 1 inputs are connected internally, and both
channel 2 inputs are connected internally, the GEA 24 effectively has only 2 two Fuel Flow
input channels. Use Channel 1 and/or Channel 2 inputs as desired, but only connect
inputs from one connector (either the 37 pin connector or the 50 pin connector) for each
channel.
Pin Name
Connector
Pin
I/O
FUEL XDCR +12V_2
J243
25
Out
FUEL FLOW (shared with Pin 36, J244 connector)
J243
23
In
FUEL XDCR GND_2
J243
22
--
FUEL XDCR +12V_1
J243
24
Out
FUEL RETURN (shared w/Pin 37, J244 connector)
J243
21
In
FUEL XDCR GND_1
J243
20
--
FUEL XDCR +12V_3
J244
34
Out
FUEL FLOW (shared with Pin 23, J243 connector)
J244
36
In
FUEL XDCR GND_3
J244
38
--
FUEL XDCR +12V_4
J244
35
Out
FUEL RETURN (shared with Pin 21, J243 connector)
J244
37
In
FUEL XDCR GND_4
J244
39
--
RPM 1
J243
8
In
RPM XDCR GND_1
J243
7
--
RPM 2
J243
6
In
RPM XDCR GND_2
J243
5
--
RPM XDCR +12V_1
J243
9
Out
RPM XDCR +12V_2
J243
10
Out
FUEL QTY +5V_1
J244
5
Out
FUEL QTY 1
J244
6
In
FUEL QTY 1 GND
J244
7
--
FUEL QTY +5V_2
J244
8
Out
FUEL QTY 2
J244
9
In