Actually that is not the case. If you make the video full screen you
can see the output of the Z3000 is being used. when he changes
waveforms you can see him re-patch the output cord to the other
waveform jack. Also there is nothing plugged into the External in for
the frequency counter so it is reading the internal VCO and not an
external one. T Cwejman that is in the patch looks like the MMF-1, a
multi-mode filter that is used in the demo also. Maybe it does not
pass a unfiltered signal when set to it's extreme "open" settings. I
would love to see the Z3000 straight into a scope. Don Kim's video
shows similar looking square waves etc. when they are not being
modulated. I am going to check the AS and Doepfer VCOs in me system.

-James

On Nov 24, 2008, at 8:28 AM, Andreas Wetterberg wrote:

> He's mainly using the - very expensive - cwejman oscillator in that
> demo, and using the tiptops as frequency counters.
>
>
> ;)
>
> Andreas...
>
> James Husted skrev:
>> I was hot for the Tiptop VCO till I saw this video made about
>> it. - http://vimeo.com/2206614
>> That is one of the worst sine waves I've seen and the spectrum
>> display shows many harmonics that shouldn't be there. I count at
>> least 7 on the spectrum display. . All I can hope is the
>> distortion is caused by something downstream between the VCO and
>> the scope. Does anyone who has a z3000 and a scope and can tell me
>> if this setup was just faulty or does the unit make sines as shown
>> in the vid The other waveforms shown are not to good on this demo
>> either - the sawtooth and triangles look like they sag and the
>> square waves are not square with flat tops and bottoms.
>> -James
>>
>>
>



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