On Sunday 01 November 2009 19:23:27 you wrote: > Arnold Krille wrote: > > Why do you want to carry 5V? According to my docs, Midi is just Signal+ > > and Signal- and shield. Which, when carried over Cat5, should be all on > > the shield. > any midi has to carry 5v iirc. and midi is not balanced, so there is no > signal+ and signal-. would be cool if there was - then 100m would be no > problem :)
Actually midi seems to be something that drives an led inside the opto- coupler. So it doesn't matter if that signal is 5V to ground or 2.5V to -2.5V. As long as the two "signals" are not connected to anything besides the opto- coupler in the receiving device, all is well. The book on my desk with electronic-nifties for studios labels the two pins used by midi as signal+ and signal-... Have fun, Arnold
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