190-01639-00
GSU 75 ADAHRS Installation Manual
Rev. 6
Page 4-4
4.2 Power Functions
4.2.1 Aircraft Power
The GSU 75 has inputs for the two Aircraft Power busses of 14/28VDC. AIRCRAFT POWER 1 and
AIRCRAFT POWER 2 are “diode ORed” to provide power redundancy.
4.2.2 GSU 75 Magnetometer Power
The Mag Power out pin must be used to supply power to the GMU 44.
4.2.3 GSU 75 OAT Probe Power
Refer to
and
for OAT Power (pin 6, J751) information.
Table 4-3 GSU 75 Aircraft Power
Pin Name
Pin
I/O
AIRCRAFT POWER 1
14
In
AIRCRAFT POWER 2
16
In
POWER GROUND
34
--
POWER GROUND
36
--
AIRCRAFT PWR1 and AIRCRAFT PWR2 are “diode ORed” to provide power redundancy
Table 4-4 GMU 44 Input Power
Pin Name
Pin
I/O
+12 VDC POWER
9
In
POWER GROUND
6
--
Table 4-5 GSU 75 Magnetometer Power
Pin Name
Pin
I/O
MAGNETOMETER POWER OUT
13
Out
MAGNETOMETER GROUND
33
--
340095
The document reference is online, please check the correspondence between the online documentation and the printed version.
