Control is done by means of an RS-232C connection to a four pin RJ11 modular jack on the back of the unit (an adapter to a standard DB9 connector is supplied by Broadcast Tools with the unit). Serial port parameters should be set to 2400 baud rate, no parity, 8 data bits, 1 stop bit, CR/LF termination.

The 8x2 should be configured to use 'Mix' mode. This can be done by holding down the F1 button on the switcher while powering up.

Operation in 'multidrop' mode is not supported.