Hi deepsound

> I'm the owner of an A-100 system for only one week, so as i've got
> some theorical knoledge on synthesis i'm new to the modular experience :)
> My problem is that I would like to know how i can have one vco playing
> the tone and the other transposed at 3rd or 5th.
> I'm sorry for this newbie question but i tried many things and cannot
> get any good result.

I assume, you use A-110 as VCO. There are two possibilities:
1.) detune the both VCOs. A 5th should be just in the range of the tune
potis.
2.) Take a fixed voltage (e.g. always one of the outputs of the A160/161
is at +5V if ther is no Cclock sent to the module) and feed it to the
CV2 Input. The amount of the CV2-poti will set the detune.

Florian