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SVCO -B calibration issue
MUFF WIGGLER Forum Index -> Oakley Sound Systems  
Author SVCO -B calibration issue
Pav
Hi,
I have completed build of my 10 module Oakley ..picture to follow.

Am trying the Tune calibration - with switch on 8' and Freq 12 oclock and it appears to be 2 octaves too low.
Cermet will only tuning up to 112Hz so cannot get 220hz.

Only by switching to 2' can i reach 220.

Should I suspect a bad value for a resistor ? Trimpot ?


FYI This old entry appears to be asking similar question but i wasnt sure if the recommendations were for vco or svco-b so didnt append to it

Thanks

https://www.muffwiggler.com/forum/viewtopic.php?t=136058
Synthbuilder
Is your midi interface putting out 5V when C4 (middle C or midi note number 60) is pressed? If not there may be some problems getting the SVCO to behave as I have described.

Tony
Pav
aha! Yarns is giving me 2V d'oh! . the manual states its calibration voltage range between -3V and +7V. er 5 + -3 = 2 right

midiDac is giving me 4.17V when i take a reading from pitch out and
4.94 VRMS from VCO sine out. C4 pressed

So i have to tweak some more.

Thanks for the response.
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