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5.3 Switcher Operation via RS-232 Machine Control
The 1372 and 1374 HDMI Switchers may be operated using RS-232
protocols. The technical information needed is provided in the two charts
below. A system using RS-232 control should be wired and programmed
by a qualied custom integrator.
Pin Denitions
HDMI Switcher Control Unit
PIN Denition PIN Denition
1 NC 1 NC
2 Tx 2 Rx
3 Rx 3 Tx
4 NC 4 NC
5 GND 5 GND
6 NC 6 NC
7 NC 7 NC
8 NC 8 NC
9 NC 9 NC
5.2.1 RS-232 Commands
Command Action
“I” + “1” Port 1 On
“I” + “2” Port 2 On
“I” + “3” Port 3 On
“I” + “4” Port 4 On
“S” + “1” Enable Signal Enhance
“S” + “0” Disable Signal Enhance
“P” + “1” Power On
“P” + “0” Power Off