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3.2.3
RS-232 and RS-422 connectors
The GMU has two RS-232 and one RS-422 connector for control information to and from
the ACU. See section To connect the ADU, ACU and GMU on page 2-29 for details how
to connect the ACU to the GMU.
Outline (on the GMU)
1
Table 3-9: RS-232 connector, male, outline and pin assignment, GMU
Outline (on the GMU)
1
Table 3-10: RS-422 connector, male, outline and pin assignment,
Pi
n
1
Not connected
2
BUC TXD
5
3
BUC RXD
4
Not connected
5
GND
6
9
6
Power good
7
GMU reset
8
Temperature out of range
9
Core module RSS
Pin
1
2
5
3
4
5
6
9
6
7
8
9
GMU
Pin function
Pin function
GND
Keyline P
Reset P
GND
GND
Not connected
Keyline N
Reset N
Not connected
:
Interfaces of the GMU
3-7
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