[sdiy] Midi opto isolation

[Roy J. Tellason]

On Tuesday 01 January 2008 13:09, Sean Ellis wrote:
> Over the years I have picked up some modules that have trouble with complex
> midi signals. I'm considering ways to fix them like improving the midi
> inputs stage but I'm curious, why have the signal isolated? Surely using
> the isolation lowers the quality of the signal with very little benefit, is
> it really needed?

The isolation has absolutely no effect whatsoever on the quality of the 
signal,  and yes,  it's needed because it's part of the MIDI spec...

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