From yahoo Sent Mon, Mar 23rd 2015, 14:21
From yahoo Sent Mon, Mar 23rd 2015, 14:21
> I think I'm going insane! I've soldered the 330K resistor this time.
>
> Again the upper Quantizer is used.
>
> CV In = 1.000 volt, CV Out 0.923 volt. But sometimes (very sometimes, rare is better) it reads 1.006 volt again.
> At that moment only when I unplug the CV In it reads 0.85 volt.
>
> Next.
>
> CV In = 0 volt
> Transpose CV IN = 1.000 volt, CV Out = 1.006 volt.
> Transpose CV IN = 2.002 volt, CV Out = 2.002 volt.
> I can reproduce this over and over.
>
> So, this time the transpose function is OK, but the CV In isn't.
>
> During the tests I've adjusted P3 so probably it isn't in the original setting anymore.
>
> Best regards,
> Karel.
The CV In scales are adjusted by means of the 3 trimming potentiometers P1 (CV1 In), P2 (CV2 In) and P3 (Transpose In). The
difference between 1.006 and 0.923V is 0,083V which is exactly one semitone (1/12V). After the re-adjustment of P1 the CV output
should read stable 1.006V without toggling. But it's better to adjust for a higher CV difference (e.g. 0/4.00V or 0/5.00V).
Best wishes
Dieter Doepfer
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