[sdiy] Odyssey square wave not square?

[Chris Kay]

Hi,  I have an Ody MKII (2813) which I 've been trying to calibrate. If I
set it up as follows:

osc. 1 keyboard tracking on
osc. 2 sync off
PW slider fully down
filter freq. slider fully up
VCA gain slider fully up
osc. 1 (or 2) to audio fully up
all other sliders down

I've noticed that when I monitor the high gain output with a scope and send
a square wave from one of the osc's, I don't get a square wave out. I get
something that resembles a shark's tooth pattern and doesn't sound square,
it's sort of buzzy, not hollow. I've calibrated both square wave ouputs from
board B(II) using the osc. PW trimmers to get nice looking 50% pulse waves.

Further more, when I select the sawtooth on either osc. and monitor the high
gain, I don't really get the classic ramp, rather an initial spike followed
by an exponential downward curve with some small 'wobbles' on the tail.
Again the sawtooth output from board B looks like a nice classic sawtooth.

Clearly something's happening to the signal in board C(II). Does anybody
have any ideas? All suggestions gratefully accepted.

Cheers
Chris
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