From the DLS 5800 injector screen requires the user to turn on the injector channels before you generate the noise output. In the DLS 5800 you would select 1 of 3 injectors depending on the configuration used as you can have from 1 to 3 DLS 5410DC injectors. In the injector screen you would turn on the required channels by selecting the on check box. Once this is done the noise generated on the DLS 5800 channel will be directed to the output for Side A and Side B of the DLS 5410DC injector..