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 Section
for
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
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