4.21 Switching channels by sending RS232 data
You can switch the SmartView XPro remotely by sending RS232 data to the serial communications port (located on the rear panel adjacent to the power connectors). All data should be sent using the following RS232 protocol.
Baud: 19200, bits: 8, stopbits: 1, parity:none
No handshaking is implemented but valid command characters will be echoed back to the sender.
The top nibble (4 bits) of the command byte defines the user port that is to be switched (1=port 1, 2=port 2, 3=port 3 and 4=port 4). The bottom nibble defines the computer port that the user port is to be switched to (e.g. 0=port 1, 1=port 2, E=port 15, F=port 16).
For example:
Hexadecimal code 14 switches user port 1 to computer port 5 Hexadecimal code 38 switches user port 3 to computer port 9 Hexadecimal code 4D switches user port 4 to computer port 14
Special codes are:
Hexadecimal code 71 switches user port 1 to computer port 0 (off) Hexadecimal code 72 switches user port 2 to computer port 0 (off) Hexadecimal code 73 switches user port 3 to computer port 0 (off) Hexadecimal code 74 switches user port 4 to computer port 0 (off)
The
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