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 speed on the SS 4.1 should be set to 9600 (DIP switches SW6-4 and SW6-5 set to 'off'). Serial port parameters in RDAdmin should be set to 9600 baud rate, no parity, 8 data bits, 1 stop bit, CR/LF termination.

The SS 4.1 should be configured to use unit ID '0', with DIP switches SW6-1, SW6-2 and SW6-3 all set to 'off'.

Operation in 'multidrop' mode is not supported. If you wish to use GPI (referred to as 'PIP', for 'Parallel Input Port' in the Broadcast Tools documentation), then you will also need to be sure that DIP switch SW6-7 is ON.