[sdiy] (OT) Doepfer MIDI-CV oddity

[Ingo Debus]

Am 18.01.2011 um 17:21 schrieb Justin Owen:

> I recently acquired a Doepfer A-190-1 MIDI-CV module which,  
> initially I thought was faulty. It regularly drops/misses/ignores  
> MIDI Note On/Off/Gate info - or at least fails to output it at the  
> Gate Out.
>
> Today, just as a test, I ran out of my normal M-Audio MIDI  
> interface, into another MIDI-CV unit, out of the MIDI Thru of that  
> and then into the A-190-1... which seemed to fix the problem. Odd.

Sounds familiar. Many years ago I had a similar problem with a self- 
made MIDI device. It worked with all MIDI Outs I could get hold of,  
exept one. It was someone from this list who advised me that the  
CNY17 I was using is just too slow for MIDI. I replaced it with a  
PC900 (not pin-compatible!!) and all was fine.

Looking at the picture of the A-190-1 on Doepfer's homepage I see  
that there's a CNY17-2 on the circuit board....

Ingo