Doepfer

hello rich,

the behaviour you described (regarding the state of
the eor output) is normal. the eor output is high
until the envelope is started again and that makes
perfect sense to me, since it is a gate output and
not a trigger output. you can turn the gate into
a trigger by sending the eor output to a
trigger delay module (a162).

also i have tried the patches shown in the manual and
they worked as described (on both of my a143/2).
but on certain occasions, f.e. when the decay time
on one envelope is very long while the decay time on
the second envelope is very short (or vice versa),
it may happen that the envelopes are not triggered in
the order you'd expect, but i don't think that this is
a malfunction, it is just a technical idiosyncrasy.

it is best to try the patches in the manual with
the range switches all up (mid range frequencies),
short attack, sustain and release at zero and decay at
12 o'clock. before patching the end-of outputs the
envelopes should all be stopped to maintain the
correct order when the envelopes are fired.

i hope this helps.

best wishes

ingo 




--- In Doepfer_a100@yahoogroups.com, "richyho@..." <richyho@...> wrote:
>
> Hi 
> 
> I've also posted this on Muffwiggler's Forum, but as it's so Doepfer-specific (and Dieter's probably/hopefully around here somewhere!) I'm posting here too...
> 
> I've just got a Doepfer A-143-2 Quad ADSR and have a question about using the EOA/EOD/EOR outputs. 
> 
> Imagine a simple setup utlising just the top two ADSR units. The 'EOR' (end of release) output for the top unit is connected to the 'gate in' of the second one. Until a gate is received by unit #1, its EOR output is high. On my unit this high at the gate input of ADSR #2 means that the output of unit #2 remains high (the output LED remains lit) until unit #1 starts to generate its envelope. In other words, if unit 2 is controlling a vca, the vca is outputting whatever sound is at it's input even when I would expect it to be silent. 
> 
> The 'problem' as I see it is when the first ADSR unit hasn't yet been triggered. At this point, its EOR is high so ADSR#2 is constantly outputting high. I would've expected EOR to be low until EOR is reached, at which point it goes high and triggers ADSR #2's envelope.
> 
> Is this expected behaviour? The manual (page 2) would seem to suggest that this is correct as far as the high/low states of the EOR is concerned, but then later example on page 6 shows a cyclically triggered generator that does not works as expected when I patch it up due to the EODs remaining high. 
> 
> It's probably me, not the module but as the first one of these modules was DOA and this one's not doing what I expect I just need to make sure.
> 
> Thanks
> 
> Rich
>