> Hello Tim, the wiper of my prototype is connected to pin 2 of the
> LM324 and an 100pF cap! Actually I thought the prototype would be
> technically the same as the A101-2 in production. (If Dieter "sneaks",
> it reads "Pr. 2" on the back of the frontpanel).

Sorry - we do not keep the technical documents of prototypes but only of the
regular modules. The prototypes are sold "as they are". They are preliminary
versions of the final products and may differ in some details.

Best wishes
Dieter Doepfer