10
HDMI 4x4 Matrix Switcher User Guide
Communication protocol and command
codes
Through the RS232 communication port, you can control a device with a baud rate of
2400, 4800, 9600, 19200, 38400, 57600 or 115200.
Communication protocol
: RS232 communication protocol
Baud rate: 9600 Data bit: 8 Stop bit: 1 Parity bit: none
Table 3: RS232 command types and codes
Command
types
Command codes
Functions
System
command
/*Type;
Inquire the models information.
/%Lock;
Lock the front panel buttons on the matrix.
/%Unlock;
Unlock the front panel buttons on the matrix.
/^Version;
Inquire the version of firmware.
/:MessageOff;
Turn off the feedback command from the COM port. It will
only show “Switch OK.”
/:MessageOn;
Turn on the feedback command from the COM port.
Demo.
Switch to Demo mode, 1->1, 2->2, 3->3 … and so on. The
switching interval is two seconds.
Undo.
To cancel the previous operation.
Operation
command
[x]All.
Transfer signals from the input channel [x] to all output
channels.
All#.
Transfer all input signals to the corresponding output
channels, respectively.
All$.
Switch off all the output channels.
[x]#.
Transfer signals from the input channel [x] to the output
channel [x].
[x]$.
Switch off the output channel [x].
[x]@.
Switch on the output channel [x].
All@.
Switch on all output channels.
[x1] V[x2].
Transfer the AV signal from the input channel [x1] to the
output channel [x2].
[x1] B[x2].
Transfer the AV and IR signal from the input channel [x1] to
the output channel [x2].
Status[x].
Inquire [x] output statues.
Summary of Contents for CM-MT4420-HD
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