Re: Digest Number 1991
2014-06-24 by S V G
Sounds like a call to Rex is in order.
Stephen
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On Tuesday, June 24, 2014 2:06 AM,
"SergeModular@yahoogroups.com" <SergeModular@yahoogroups.com> wrote:
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Digest #1991
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Mon Jun 23, 2014 8:14 pm (PDT) . Posted by:
dave.hamelin
Hello, i recently acquired an Animoo panel from 2013.
The problem:
In several different locations the VCO's pitches change when i move the power cables coming out of the panel, or when i touch the panel, or move around the panel. Basically the whole thing becomes an antenna and the VCO's cannot stay one one precise pitch. I've tried three different PSU's, tried without a PSD, tried replacing the power cables coming out of the panel. When the interference gets really bad, moving the VC Portamento pot on the NTO changes the pitch, as does changing the variable wave from full square (full CW) to less than full CW.
It does not exhibit this behaviour everywhere. In some places it is fine. but in many places it is not. I even had an electrician come to my house to make sure my power was ok and it was.
The pitches of both the NTO and PCO move together when they do. When i self-oscillate the filter though nothing interferes with its pitch.
I had a tech check all the grounds for continuity and according to him they all tested fine according to his calculations.
Any ideas?
The problem:
In several different locations the VCO's pitches change when i move the power cables coming out of the panel, or when i touch the panel, or move around the panel. Basically the whole thing becomes an antenna and the VCO's cannot stay one one precise pitch. I've tried three different PSU's, tried without a PSD, tried replacing the power cables coming out of the panel. When the interference gets really bad, moving the VC Portamento pot on the NTO changes the pitch, as does changing the variable wave from full square (full CW) to less than full CW.
It does not exhibit this behaviour everywhere. In some places it is fine. but in many places it is not. I even had an electrician come to my house to make sure my power was ok and it was.
The pitches of both the NTO and PCO move together when they do. When i self-oscillate the filter though nothing interferes with its pitch.
I had a tech check all the grounds for continuity and according to him they all tested fine according to his calculations.
Any ideas?
Keep on Patchin'!