Casio CZ/ VZ/ FZ - Pro Series

>Is there anyone here who knows how such a sustainpedal actually
>work? - is it simply a switch that makes a connection, or is it more
>complicated, like theres a specific resistance needed. And if it is a
>switch is it working in latch or unlatched mode?

As I understand it, sustain pedals are just switches, but they can be 
normally open or normally closed.  I'm not sure which Casios use.  I think 
Yamaha pedals won't work and Ensoniq ones will, not that it really helps to 
know that.


>But the Volumepedal that goes into the CZ1 obviously can't work like
>that. I guess it must be either someting like a variable CV source,
>or perhaps just a potentiometer working in series with the main
>volume slider. Unfortunately the manual don't give any specs of the
>interface, if its analog or digital, passive or active.
>
>It could be very interesting if it was a simple interface using
>resistance or CV, as you then, somehow, could interface it with other
>stuff like analog synths - to make tremolo or gating effects on the
>CZ1 sync to a LFO, envelope or evelope follower on a analog synth
>like my Korg MS20.

The foot pedals that I've seen are just potentiometers connected between 12 
V and ground with a TRS jack, providing a CV output (though this doesn't 
indicate anything for the Casio pedals).  Some older Yamaha CV pedals 
actually have a lightbulb inside, moving the pedal actually moves a tinted 
glass thing between the light and a photoresistor (or something like that, I 
didn't get a good look).  But probably the basic principle of operation is 
the same.