190-01115-01
G3X/G3X Touch Installation Manual - LRU Pinouts
Rev. AC
Page 25-64
25.14.3.2 Transducer Output Power
The GSU 73 supplies output power for engine/airframe sensors that may require supply voltage excitation.
The GSU 73 outputs voltage levels of +5, +10, and +12 Vdc, these outputs may be spliced to allow
connection to multiple sensors if needed. Max current specs are listed in the following table.
Transducers that require more current (such as Princeton capacitive fuel quantity converters) must be
supplied from aircraft power instead of GSU 73 transducer power output pins.
25.14.3.3 Magnetometer Power
The GSU 73 outputs supply voltage to the GMU 22 via pins 38 & 39.
Power Supply Output
Maximum Continuous Output Current
+5VDC Transducer Power Out
125 mA
+10VDC Transducer Power Out
100 mA
+12VDC Transducer Power Out
150 mA
Pin
Connector
Pin Name
I/O
55
J732
+12VDC TRANSDUCER POWER OUT
OUT
56
J732
TRANSDUCER POWER OUT LO (GROUND)
--
58
J732
+10VDC TRANSDUCER POWER OUT
OUT
57
J732
TRANSDUCER POWER OUT LO (GROUND)
--
75
J732
+5VDC TRANSDUCER POWER OUT
OUT
74
J732
TRANSDUCER POWER OUT LO (GROUND)
--
Pin
Connector
Pin Name
I/O
38
J731
MAGNETOMETER POWER OUT
OUT
39
J731
MAGNETOMETER GROUND
--