--- In Doepfer_a100@y..., bakis Sirros <synth_freak_2000@y...> wrote:

> 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.

hi Bakis, i am sure doepfer could build the shaper to perform the
function on the A190 clock. but if the A154 can not shape the Clock
Duty cycle of the A190, would you be able to use the Analoge Systems
RS50 Trigger, Voltage Controlled Pulse Shaper & Voltage Controlled DC
Level Shifter to do the job look at the url below.

http://www.analoguesystems.co.uk/modules/rs50.htm

i hope the A154 has the Pulse Shaper on board to shape the clock's
input, as well as its own clock.

Regards,
RM

>
>
> --- ringmod45 <ringmod45@y...> 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
> 1 group owner-moderator
>
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