Doepfer

Hi,
as sayed in the title i like to calibrate my A-185-2 precission adder.
It is not exactly 1V and not all Voltage adders are exactly 1V.
( no, this is no critsm )


I must calibrate my VCOs and i like to have the precision adder as a
reference.
I see there are only two trimmers.
some explanations would be appreciated.
thanks