Garmin G3X Installation Manual page 353

Pin
58 +10 VDC TRANSDUCER POWER OUT
59 CONFIG MODULE POWER OUT
60 CHT 4 HI
61 CHT 1 HI
62 EGT 4 HI
63 EGT 1 HI
64 FUEL 2 HI
65 MAN PRESS HI
66 POS 4 / GP 4 / FUEL 4 HI
67 POS 1 / GP 1 / TIT 1 LO
68 SHUNT 2 LO
69 OIL PRESS HI
70 SHUNT 1 HI
71 VOLTS 1 HI
72 POS 5 / MISC TEMP HI
73 CHT 5 HI
74 TRANSDUCER POWER OUT LO (GROUND)
75 +5 VDC TRANSDUCER POWER OUT
76 FUEL SENSOR PULL-UP 2 (FUEL 2)
77 FUEL SENSOR PULL-UP 1 (FUEL 1)
78 CONFIG MODULE GROUND
*Indicates Active Low
23.13.3 Power I/O
23.13.3.1 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).
Pin Connector
47 J731
49 J731
59 J731
61 J731
190-01115-01
Rev. AA
Pin Name
Pin Name
AIRCRAFT POWER 1
AIRCRAFT POWER 2
POWER GROUND
POWER GROUND
G3X/G3X Touch Installation Manual - LRU Pinouts
I/O
Out
Out
In
In
In
In
In
In
In
In
In
In
In
In
In
In
--
Out
Out
Out
--
Section for
I/O
IN
IN
--
--
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