The trimming pot on the A-198 pcb can be used to adjust the pressure CV
offset. But I'm not sure if the range is sufficient to compensate the offset
in case of a 15V supply. You have to try out.

Best wishes
Dieter Doepfer

> -----Ursprüngliche Nachricht-----
> Von: Doepfer_a100@yahoogroups.com [mailto: Doepfer_a100@yahoogroups.com ]
> Gesendet: Dienstag, 22. November 2016 23:48
> An: Doepfer_a100@yahoogroups.com
> Betreff: 1 A-198 Ribbon pressure offset (zero)
>
>
> I am using the A-198 with a frac setup, originally powering from
> a +/-12V supply but now trying to run it off of the +/-15V
> supply. It does work fine with just one exception. The pressure
> voltage now has a 3V offset. No finger on ribbon, panel pot fully
> clockwise, I get 3V. More if I press. How can I adjust this Is
> that what the trim pot is for
>
> Thank you
>
> Steve B