Doepfer

I have a P9 suitcase and bought some A-100BC CV/Gate bus connection cables
but they're too short to connect the bottom to the top bus rail. Also,
although there are three bus rails in the P9, it seems it's only possible to
connect two of them together with the CV/Gate cables.

Does anyone have a suggestion of where I can find ready-made cables of a
suitable length to connect the bottom to the top rail & how I could connect
all three rails?

Otherwise does anyone know a UK source for the connectors (what are they
called?) and which sort of cable I should buy to solder my own connector
cables?

Thanks, Matt


[Non-text portions of this message have been removed]

No reply here but, for future seekers after the same information, James Husted of Synthwerks replied on another forum that the bus rails can be connected between the CV & Gate pins of any unused headers using the A-100BC cable.

A doepfer cable long enough to reach from the top to the bottom bus rail in a 9U case would be useful though.

Matt

--- In Doepfer_a100@yahoogroups.com, Matt <matt.fretton@...> wrote:

>
> I have a P9 suitcase and bought some A-100BC CV/Gate bus connection cables
> but they're too short to connect the bottom to the top bus rail. Also,
> although there are three bus rails in the P9, it seems it's only possible to
> connect two of them together with the CV/Gate cables.
> 
> Does anyone have a suggestion of where I can find ready-made cables of a
> suitable length to connect the bottom to the top rail & how I could connect
> all three rails?
> 
> Otherwise does anyone know a UK source for the connectors (what are they
> called?) and which sort of cable I should buy to solder my own connector
> cables?
> 
> Thanks, Matt
> 
> 
> [Non-text portions of this message have been removed]
>

> No reply here but, for future seekers after the same information,
> James Husted of Synthwerks replied on another forum that the bus
> rails can be connected between the CV & Gate pins of any unused
> headers using the A-100BC cable.
>
> A doepfer cable long enough to reach from the top to the bottom
> bus rail in a 9U case would be useful though.
>
> Matt

So far nobody was asking for a longer A-100BC. That's why we do not offer
the A-100BC with longer cables. Of course it would be easy to use longer
cables for the A-100BC if required.

For the A-100BC cable open jumpers are used. The wires are simply soldered
to the jumpers. One has to pay attention that not too many solder is used.
Otherwise the jumpers are filled with solder and cannot be used any more. I
don't think that you will find such a cable elsewhere. But you may use two
A-100BC to transmit the CV and/or gate signal. Simply use free terminals of
one of the bus board pin headers (usually not all pin headers are used). The
upper pin pair is gate, the second pair is CV.

In addition I'd recommend active bus buffers (A-185-1/2) over A-100BC
because of the possible voltage loss if the CV is connected to many
oscillator CV inputs.

Best wishes
Dieter Doepfer

Thank you Dieter. I also understand that two bus boards can be connected by using a 16 pin ribbon cable between unused headers on each board - do you see any problems with that method? Matt

--- In Doepfer_a100@yahoogroups.com, <yahoo@...> wrote:

>
> > No reply here but, for future seekers after the same information,
> > James Husted of Synthwerks replied on another forum that the bus
> > rails can be connected between the CV & Gate pins of any unused
> > headers using the A-100BC cable.
> >
> > A doepfer cable long enough to reach from the top to the bottom
> > bus rail in a 9U case would be useful though.
> >
> > Matt
> 
> So far nobody was asking for a longer A-100BC. That's why we do not offer
> the A-100BC with longer cables. Of course it would be easy to use longer
> cables for the A-100BC if required.
> 
> For the A-100BC cable open jumpers are used. The wires are simply soldered
> to the jumpers. One has to pay attention that not too many solder is used.
> Otherwise the jumpers are filled with solder and cannot be used any more. I
> don't think that you will find such a cable elsewhere. But you may use two
> A-100BC to transmit the CV and/or gate signal. Simply use free terminals of
> one of the bus board pin headers (usually not all pin headers are used). The
> upper pin pair is gate, the second pair is CV.
> 
> In addition I'd recommend active bus buffers (A-185-1/2) over A-100BC
> because of the possible voltage loss if the CV is connected to many
> oscillator CV inputs.
> 
> Best wishes
> Dieter Doepfer
>

> -----Ursprüngliche Nachricht-----
> Von: Doepfer_a100@yahoogroups.com
> [mailto:Doepfer_a100@yahoogroups.com]Im Auftrag von mfretton
> Gesendet: Dienstag, 22. März 2011 18:02
> An: Doepfer_a100@yahoogroups.com
> Betreff: [Doepfer_a100] Re: CV/Gate bus connection cables question
>
>
> Thank you Dieter. I also understand that two bus boards can be
> connected by using a 16 pin ribbon cable between unused headers
> on each board - do you see any problems with that method? Matt

That's another solution. Pay attention to the correct polarity of both
connectors! Otherwise the PSU and even modules may be destroyed.

Best wishes
Dieter Doepfer