Doepfer

hi ringmod,
as far as i understand,the a154 pwm controls are for
the on-board vc clock source ONLY.so,you can't shape
the a190 50% pulse wth the a154.
bakis.



--- ringmod45 <ringmod45@yahoo.com> wrote:
> --- In Doepfer_a100@y..., "Joe Buechler"
> <buechlerjoe@t...> wrote:
> > Okay, I think the A154 as currently proposed
> doesn't do variable 
> step 
> > length and midi sync at the same time, I believe
> the clock input 
> jack 
> > shorts out the clock generator.
> 
> hi Joe, judging by the A190 manual, the A190 already
> has a divisor 
> built in and it also reponds to Program Change n.
> the chart is also 
> there at this url.
> 
> http://www.doepfer.de/a100_man/a190_man.htm
> 
> logically speaking, the A190 sends out a 50% PW duty
> cycle. the step 
> time would be based on the divisor you set the A190
> to be at. so the 
> A154 would probably accept the duty cycle as is. now
> the Variable 
> pulse shaper on the A154 would shape the A190 pulse
> cycle plus or 
> minus from its 50% PW duty cycle. once it is shaped
> manually or by 
> voltage control, the newly shaped pulse cycle, which
> is the same 
> length as the A190 50% pulse duty but with a
> different pulse shape, 
> would clock the A155's thru the buss connectors. 
> > 
> > Now I'm back to thinking about buying an A163 VC
> divider for to get 
> > variable step length with midi sync. But ringmod's
> question got me 
> > thinking. The A163 doesn't have a reset input like
> the A160 clock 
> > divider does. Won't it end up in an indeterminate
> state when you 
> reset 
> > the master clock? 
> 
> you could avoid this problem by simply multing the
> clock output from 
> the A190 so it goes to the A154 and the A163 , so
> that if you reset 
> the A190 then the A154 and A163 would always be in
> sync(or phase). 
> the A154 would accept the reset pulse from the A190
> to do the stop 
> and start functions and the A163 will always sync
> itself to the clock 
> out of the A190 regardless of the A190 reset output.
> 
> now it would be a wise option to use a buffered
> multiple for multing 
> the clock from A190 to clock the A154, A160/161 and
> the A163. i would 
> use the Analogue Solutions MX224 Mixer / Inverter /
> Buffer, which is 
> a 4hp module(small and has 2 inverted and 4 normal
> buffered outputs), 
> to do the multing to have precise voltages to avoid
> any delays and 
> keep things tight and in sync. the plus side to this
> module is, it 
> has inverted outputs, as well, to do ping pong style
> panning and 
> delays. hope this helps.
> 
> regards,
> RM
> 
> 
> That would mean the clock pulses from the A163 could
> 
> > be as much as 180 degrees out of phase with the
> master clock, a 
> > half-step delay.
> > 
> > Has anyone tried this? Is there any way to do what
> I want to do?
> > 
> > Joe
> 
> 


=====
synthfreak(parallel worlds)
athens-greece
[Doepfer_a100] group owner-moderator

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