Doepfer

Speaking of being *very* useful, what is this thing exactly? Just a 
precise mixer intended for CV? What is the main application? Adding 
pitch modulation to a keyboard CV?

Thanks,
Doug


--- In Doepfer_a100@yahoogroups.com, "hemi_ch" 
<modulardudeldidum1@...> wrote:
>
> my A-185-2 has a difference of 2cents ( tonal) between the 
different
> switches.
> this seems to be too mutch for me to name it "precision" Adder.
> I hoped that i can trim this difference away.
> 
> when i think that 1 Volt is divided by 12 to get semitones,
> 2 cents (of a Semitone) is not much in Volts.
> I think this 0,1% matching is then not enough.
> 
> The Module is _very_ useful for me.
> Matching to 0,01% and paying finally a littlebit more would be the
> better Deal at the end,
> IMHO.
> 
> 
> thanks
> H.
> 
> 
> --- In Doepfer_a100@yahoogroups.com, <hardware@> wrote:
> >
> > > 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
> > 
> > P2 on top right edge of the pcb is used to adjust the 1V coming 
from the
> > switches if nothing is connected to the sockets.
> > P1 in the lower section of the pcb is used to adjust the overall
> > amplification. There is no trimming potentiometers for each 
inputs
> as the
> > resistors in the input stages are manually selected to 0.1% by 
our
> > manufacturer. Consequently the difference between the different 
inputs
> > should be less than 0.1%.
> > 
> > Best wishes
> > Dieter Doepfer
> >
>