Doepfer

Florian, thanks a lot, I will try to analyse and to use your indications one by one 
You surely are more useful than an encyclopaedia !
:-))
Cheers

> Il giorno 29 giu 2018, alle ore 09:48, Florian Anwander fanwander@mnet-online.de [Doepfer_a100] <Doepfer_a100@yahoogroups.com> ha scritto:
> 
> Hi Diego
> 
> Am 29.06.2018 um 07:43 schrieb Diego Ragnini diegora@free.fr <mailto:diegora@free.fr> [Doepfer_a100]:
> >
> > So, if I use brand new mono Doepfer cables and the R2M black box is 
> > connected via these cables to A-100 systems which are properly 
> > grounded then everything should be fine, right?
> >
> Yes.
> 
> > What happens if one provides an external wire to connect the black box 
> > to the ground/earth (not too differently from what I will do for the 
> > A-100LC3 cases)?
> I cannot judge at the moment, whether the housing is connected to the 
> signal ground. Basically there is no need for that, as there is no 
> connection between the (signal- and housing-) ground and the 
> earth/ground of your wall outlets. There is no need for because the R2M 
> uses a wall wart. There is no hi voltage inside the device.
> 
> > Does the ground uses the “tip” of the cable?
> It does not use the tip, but either the "shaft" or the "ring". In fact: 
> It is defined as to use the shaft, but it assumes the shaft of a mono 
> jack, which reaches up to the "ring" position of the stereo jack. Some 
> Doepfer modules are equipped with Cliff sockets. Those sockets have 
> there shaft-contact at the position, where a stereo-jack has its "ring". 
> There is nothing wrong with it, as it relies on using mono-cables.
> 
> >
> > The MS20 also shows a 1/4 female jack labelled “GND": how do I use 
> > this? And is it always the tip providing the connection?
> This is a big misunderstanding opf the MS-20. This symbol means, that 
> the socket will switch the tip to ground, when the corresponding 
> function is active.
> Example: https://www.muziker.de/image/2/0039/9lan.ms20mini_detail4_jpg.jpg <https://www.muziker.de/image/2/0039/9lan.ms20mini_detail4_jpg.jpg>
> In the low right corner is a socket which is connected to the push 
> button aside the keyboard. The "GND"-symbol means: "The tip of a cable 
> that is plugged in here will be shortcut to ground, as soon as you press 
> the button". This is the function of a so called switched trigger. 
> (connect this socket with the MS-20s trigger-in-socket and you will be 
> able to trigger a note).
> 
> Florian
> 
> http://www.florian-anwander.de <http://www.florian-anwander.de/>
> 
>