> dieter, i've just received an a156 which needs calibrating. putting 1v
> into it (from an a155) produces less than an octave. adjusting P4
> downwards has the expected effect of reducing the interval between 0v
> and 1v, but turning P4 clockwise seems to level out at a little under
> 11 semitones and won't reach the octave despite further (careful)
> turning. any ideas
>
> seems to be a good week for tuning problems :)
>
> stu

Please refer to my message vom June 18th. First of all P4 has to be adjusted
for exact 1.00V jumps of the outputs independent of the exact input voltages
(e.g. with an A-176 as continuous CV source). Not until the output scale is
adjusted the input scales have to be adjusted (P1, P2) so that an 1V jump at
the corresponding input generates the 1V changes at the outputs.

Best wishes
Dieter Doepfer