Audio Authority 1372A User Manual
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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 qualified custom integrator.
Pin Definitions
HDMI Switcher
Control Unit
PIN Definition
PIN Definition
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