190-01115-01
G3X/G3X Touch Installation Manual - LRU Pinouts
Rev. AC
Page 25-63
25.14.3 Power I/O
25.14.3.1 Aircraft Power
The GSU 73 has four inputs for aircraft power bus inputs of 14/28 Vdc, and can operate using power from
one or both inputs (AIRCRAFT POWER 1 AND AIRCRAFT POWER 2). The pins are internally
connected using diodes to prevent current from flowing between the two power inputs. AIRCRAFT
POWER 2 is for connecting to an alternate power source, such as on aircraft with two electrical buses. The
two aircraft power inputs may optionally be used to monitor aircraft bus voltage (see
configuration).
58
+10 VDC TRANSDUCER POWER OUT
Out
59
CONFIG MODULE POWER OUT
Out
60
CHT 4 HI
In
61
CHT 1 HI
In
62
EGT 4 HI
In
63
EGT 1 HI
In
64
FUEL 2 HI
In
65
MAN PRESS HI
In
66
POS 4 / GP 4 / FUEL 4 HI
In
67
POS 1 / GP 1 / TIT 1 LO
In
68
SHUNT 2 LO
In
69
OIL PRESS HI
In
70
SHUNT 1 HI
In
71
VOLTS 1 HI
In
72
POS 5 / MISC TEMP HI
In
73
CHT 5 HI
In
74
TRANSDUCER POWER OUT LO (GROUND)
--
75
+5 VDC TRANSDUCER POWER OUT
Out
76
FUEL SENSOR PULL-UP 2 (FUEL 2)
Out
77
FUEL SENSOR PULL-UP 1 (FUEL 1)
Out
78
CONFIG MODULE GROUND
--
Pin
Connector
Pin Name
I/O
47
J731
AIRCRAFT POWER 1
IN
49
J731
AIRCRAFT POWER 2
IN
59
J731
POWER GROUND
--
61
J731
POWER GROUND
--
Pin
Pin Name
I/O
*Indicates Active Low