> Thank you for your answer Dieter
> but if the switch is in the position 2 ( or 3 or 4 ) it became a logical module , using the input signal plug and the BC
> cv input .
> is my original mail more understandable
>
> Thank you
>
> GEORGES

It's a while ago that the module was designed and I do not remember exactly the features of the AND, OR and XOR modes. As far as I
remember the incoming signal and the BC signal are both AD converted into 8 bit digital signals which are AND/OR/XOR combined and
the result is sent to the output DAC (i.e. the single bits are AND/OR/XOR combined). To be on the safe side please contact Christian
Assall ( software@... ). He programmed the firmware of the A-189-1 and knows details.

Best wishes
Dieter Doepfer