A good place to start is here:
http://www.clavia.se/nordmodular/Modularzone/
You just need to know 1 thing about the Clavia modular synths and that
is that the envelopes all have a build in vca, that could be confusing
at first.
This picture shows that:
http://www.clavia.se/nordmodular/Modularzone/Basics/Basic1.gif
Between the red input and output of the envelope you'll see the symbol
of a vca modulated by the envelope.

Also the A-190 outputs not just cv, but gate and clock signals to.
CV is (mainly) for frequency things like oscillators and filters.
Gate is the timing signal. So sound on sound off, and mainly used to
trigger envelopes.
Clock signals produce midi synchronised gate signals. This can be used
to sync sequencers to midi.
These are just global uses of CV/Gate/Clock signals, much more is
possible with this.

--- In Doepfer_a100@yahoogroups.com , "techmaster242" <techmaster@...>
wrote:

>
> I'm trying to make sense of how everything generally wires together in
> a modular. Obviously, anything is possible, and the experimentation
> is where the fun comes in, but I would like to understand the
> "typical" way that a synth is wired, so that I can know what I'm doing
> when I deviate from it. I'm just not 100% sure of how the signal
> flows from one device to another to form a complete synth. I've
> pieced together bits and pieces, and just wanted to put it all down in
> front of you guys, and see if I'm on the right track. So, here goes.
>
> basic synth:
> midi gets converted to cv by a-190
> cv goes into VCO, which puts out audio signal
> audio signal from VCO goes into VCA, which puts out audio signal
> audio signal from VCA goes into your mixer, recorder, or DAW
>
> a bit fancier:
> gate signal from a-190 goes into VC splitter
> one VC goes into ADSR then VCA to control volume envelope
> another VC goes into VCO sync so wave starts cleanly on every midi note
>
> for a moog type of sound:
> cv from a-190 goes into a cv splitter
> cv's go into same setup as above, but into 2 or 3 chains of
> VCO->ADSR/VCA, slightly detuned from one another, mixing wave shapes,
> etc to fatten up sound...
> all VCA's audio outputs go into an audio mixer, which mixes down to
> one signal going into your DAW.
>
> LFO's can then basically be plugged into any VC input in any above
> setup to provide modulation, or introduce some variance to your sound.
>
>
>
> Am I thinking about this in the right way Obviously, you can run
> VCO's or LFO's into each other's sync inputs and get some chopped up
> waves with weird harmonics and stuff, but I'm just trying to
> understand the absolute basics of how this works before I really start
> tearing up the sound and see what this beast is truly capable of. :)
>