Am 29.10.2012 01:53, schrieb ohmstudiste:

> Hi,
>
> I got a mp4 that I recently recalibrated and is working very nicely. Tuning/scaling is very good.
> I checked all the voltage and got good and steady readings on the power supply and keyboard CV voltages.
>
> But when it comes to measure the VCO offset in the klm398 I don't get the 0.000v +/- 1mv. Instead I read voltages bretween 1v and 3v and they change if I play notes on the keyboard. The voltages are responsive to the different VR on the board but I can't make them 0.000v.
>
> So question are:
> - Am I reading the good points i connected to J12 and to the respective 4 colour wires mentionned in the manual (and corrected here for new version)
> - Is there a key to press while reading
> - Is it dangerous for the OSC to have these readings As i mentionned my mp4 is really nice tuned and scaled, for every oscillators.

Others may correct me, but I think you misunderstood the adjustment
description: As far as I understand it right this is not a trimming to
absolute 0.000V +/- 1mV, but the voltages should not vary more than 1mV
in relation to each other.

Florian
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