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5.3 Operation via RS-232 Machine Control
Operation using RS-232 protocols is possible. The technical information needed is
provided in the two charts which follow but if you are not technically inclined, seek help
from an appropriately trained individual since cables will have to be constructed and
programs written to use the RS-232 capabilities.
5.3.1 Connector Pin Outs
5.3.2 Communications Protocol
Baud Rate: 115200 bps
Data Structure: 8 Bits
Parity: None
Stop Bit: 1 Bit
5.3.3 Command Set
The table on the following page contains the command set that is available for control of
the 1T-SX-644. You should adhere to this structure when controlling the unit via a
computer or a hardwired controller.
HDMI Switcher
Control Unit
PIN Definition
PIN Definition
1 NC
1 NC
2 TxD
2 RxD
3 RxD
3 TxD
4 NC
4 NC
5 GND
5 GND
6 NC
6 NC
7 NC
7 NC
8 NC
8 NC
9 NC
9 NC
