Re: [AH] Serge Frequency shifter carrier vco board (calibration needed?)

From John P
Sent Tue, Apr 1st 2008, 04:17

wild guess - bad ground?

Bakis Sirros wrote:
> hello list,
>
> i got, few days ago, a brand new carrier vco board (quo) for my Frequency shifter module and my tech installed it to my FS module.
> now the two vco outputs work (and the module works), but it seems that the carrier vco board needs calibration probably?
> the symptoms:
> the (carrier) vco frequency knob is only effective from 12 o'clock to max(5 o'clock), but not at all from 12 o'clock to min (7 o'clock).
> also the 1volt/oct input does not work at all.
> the vcf input works, but it seems that it affects the carrier vco's frequency in the opposite direction...? (when it is in the negative territory)
>
> any ideas what the problem could be? 
> the carrier vco board is new so it should work fine.
> probably needs some calibration, as there are about 6 trimmers on the quo board...
> any help on this?
>
> thanks in advance,
> best regards,     :-)
> Bakis.
>
>
>
> Bakis Sirros 
> Parallel Worlds / Interconnected / Memory Geist
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