NION Hardware Manual
September 30, 2010
Version 1.6.1.0
75
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Serial communications
NION supports serial communications via two female DB-9 connectors on the rear of the unit.
The first connector supports RS-232 and the second supports both RS-422 full duplex and
RS-485 half-duplex.
Follow the pinout drawings and charts below for terminating the different protocols.
Note:
Only one protocol can be used on a particular port at any one time.
RS-232 serial port
Pin Function
1 N.C.
2 RX
data
3 TX
data
4 N.C.
5 Ground
6 N.C.
7 N.C.
8 N.C.
9 N.C.
Note:
Transmit (TX) and Receive (RX) are from the point of view of the MediaMatrix device.
Connect them to the opposite port of the remote unit.
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