Doepfer

Re my last post on this.

I still can't get the MIDI interface to trigger gate and CV via the 
bus. Works fine when patched. I've made sure the links on the MIDI 
interface are OK and that the jumpers are powering the whole bus. 

Looking inside, I found one of the bus junctions (the one after the 
MIDI interface) had a small plug with what looks like a 
diode/transistor on a heatsink. Removing this stopped the interface 
recieving gate input.

I'm stuck

Regards

Stephen Bennett. Composer and sound design. (UK)

henry fool & The Fire Thieves 

www.chaosstudios.co.uk

Author of 'The Fast Guide To Logic' and 'Making Music with E-Magic 
Logic Audio'

www.pc-pubs.demon.co.uk

> Looking inside, I found one of the bus junctions (the one after the 
> MIDI interface) had a small plug with what looks like a 
> diode/transistor on a heatsink. Removing this stopped the interface 
> recieving gate input.

Hi Stephen,
   The little gizmo supplies 5V to the bus - without it, the A-190
won't work. Previous posts seem to have covered most possibilities,
but I can see one that isn't. To summarise:

You can stop the A-190 putting gate and CV on bus by removing links on
the A-190 board - I think you've checked this (its buried in the A-190
manual).
You can prevent the A-140 from receiving gate from the bus with a
jumper on its board - again, its buried in the manual entry for the A-140.
Bakis mentioned the same applies to the A-110 - couldn't find it after
a quick scan of the manual, but careful scrutiny of the board will
reveal this or not.
You need to have jumpers connecting the gate and CV signals on the
left and right halves of the system busboard - looks like you've
checked these too.

*In addition* if you have a G6 case, i.e. 2 rows of modules, you will
need a lead connecting the gate and CV bus signals between both top
and bottom busboards. I think the standard Doepfer one connects to the
jumper pins mentioned above - the one I have just connects 2 unused
connectors on each board. If you have a G6 case, and A-110/A-140
modules are on other row to A-190, this could be it(?!).

Also, the A-141 *doesn't* take gate from the bus anyway, just in case
you have one of these!

If it's none of the above, then it looks like you'll have to get a
multimeter out and start measuring what voltages appear where!

Tim

[The views expressed above are entirely those of the writer and do not
represent the views, policy or understanding of any other person or
official body.]

hi stephen,
it's time to contact dieter doepfer or roland mayer,i
think...
bakis.


--- stephenbennettchaos <chaosstudios@hotmail.com>
wrote:
> Re my last post on this.
> 
> I still can't get the MIDI interface to trigger gate
> and CV via the 
> bus. Works fine when patched. I've made sure the
> links on the MIDI 
> interface are OK and that the jumpers are powering
> the whole bus. 
> 
> Looking inside, I found one of the bus junctions
> (the one after the 
> MIDI interface) had a small plug with what looks
> like a 
> diode/transistor on a heatsink. Removing this
> stopped the interface 
> recieving gate input.
> 
> I'm stuck
> 
> Regards
> 
> Stephen Bennett. Composer and sound design. (UK)
> 
> henry fool & The Fire Thieves 
> 
> www.chaosstudios.co.uk
> 
> Author of 'The Fast Guide To Logic' and 'Making
> Music with E-Magic 
> Logic Audio'
> 
> www.pc-pubs.demon.co.uk
> 
> 
> 
> 
> 
> 
> 


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

__________________________________________________
Do You Yahoo!?
Yahoo! Health - your guide to health and wellness
http://health.yahoo.com

hello tim,thank you for all the help you give to the
group members!!!,
about the a110 ,i must be mistaken,you're right,there
are no jumpers for not letting the a110 receive cv's
from the system board...as far as i remember...
bakis.


--- stinchcombe_t <tstinchcombe@qinetiq.com> wrote:
> 
> > Looking inside, I found one of the bus junctions
> (the one after the 
> > MIDI interface) had a small plug with what looks
> like a 
> > diode/transistor on a heatsink. Removing this
> stopped the interface 
> > recieving gate input.
> 
> Hi Stephen,
>    The little gizmo supplies 5V to the bus - without
> it, the A-190
> won't work. Previous posts seem to have covered most
> possibilities,
> but I can see one that isn't. To summarise:
> 
> You can stop the A-190 putting gate and CV on bus by
> removing links on
> the A-190 board - I think you've checked this (its
> buried in the A-190
> manual).
> You can prevent the A-140 from receiving gate from
> the bus with a
> jumper on its board - again, its buried in the
> manual entry for the A-140.
> Bakis mentioned the same applies to the A-110 -
> couldn't find it after
> a quick scan of the manual, but careful scrutiny of
> the board will
> reveal this or not.
> You need to have jumpers connecting the gate and CV
> signals on the
> left and right halves of the system busboard - looks
> like you've
> checked these too.
> 
> *In addition* if you have a G6 case, i.e. 2 rows of
> modules, you will
> need a lead connecting the gate and CV bus signals
> between both top
> and bottom busboards. I think the standard Doepfer
> one connects to the
> jumper pins mentioned above - the one I have just
> connects 2 unused
> connectors on each board. If you have a G6 case, and
> A-110/A-140
> modules are on other row to A-190, this could be
> it(?!).
> 
> Also, the A-141 *doesn't* take gate from the bus
> anyway, just in case
> you have one of these!
> 
> If it's none of the above, then it looks like you'll
> have to get a
> multimeter out and start measuring what voltages
> appear where!
> 
> Tim
> 
> [The views expressed above are entirely those of the
> writer and do not
> represent the views, policy or understanding of any
> other person or
> official body.]
> 
> 


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

__________________________________________________
Do You Yahoo!?
Yahoo! Health - your guide to health and wellness
http://health.yahoo.com