Hi Jari,

At roughly the same settings as you give, my A-137 gives a very
similar trace to yours. Because of the 4 stages acting one after the
other, it is quite hard to see the effect of each stage and/or
controls in isolation. I suspect the diagrams in the manual are
rather diagrammatic of what is going on, rather than the literal
truth, but I'll study the circuit a little, and see if I can answer
some of your other questions.

Tim

--- In Doepfer_a100@yahoogroups.com , "jalmari3" <jari.jokinen@...>
wrote:

>
> I can't duplicate the folded triangle waveforms shown in the A-137
> manual (chapter 2). The shown waveforms consist of straight lines,

but

> I get rounded waveforms.
>
> Here is an example oscilloscope view:
> http://www.esnips.com/doc/278f44e2-ce2a-4ff1-8f17-1f7ef5d795d7/A-
> 137_weirdness_1
> (I hope the link isn't too long for Yahoo.)
> The settings are:
> - All CV inputs at full counter clockwise and unplugged
> - Input level at 12'o clock
> - Multiples at 9'o clock
> - Folding level at 12'o clock
> - Symmetry at 12'o clock
> - Harmonics at full counter clockwise
>
> Questions:
> - Is this the expected output on these settings
> - Why does a triangle input get rounded
> - What settings should give the straight line waveforms shown in

the

> manual
>
>
> Best regards and thank you for your time
> Jari Jokinen
>