ESD, was : RE: [sdiy] midi optocoupler isolation voltage?

[Ingo Debus]

> Also, regarding connection to the shield:
> 
> "Pin 2 of the MIDI In connector should also be left unconnected."
> 
> In essence there must be _no_ electrical connection between the MIDI jacks
> of any two devices, otherwise you'll have an earth loop (Bad Karma).

Often Pin 2 of MIDI In is connected to ground via a capacitor. I've 
seen this on Yamaha and Roland devices.

Ingo