Antichambre

6N137 on MIDI8 and MIDI-IO Boards

3 posts in this topic

It's about 6N137 optocoupler as replacemant for 6N138 on MIDI8 and MIDI-IO Boards.

Differences is that the 6N137 is a CMOS level output.

midi-in-optocoupler-choice_zpsk5hx3xrh.p

More than that the 6N137 will allow you to significantly increase the speed between two MIDIbox.
From datasheet maximum speed is 10 MBaud/s instead of 100KBaud/s for the 138.

On the MIDI board you just have to remove the 4K7 resistor and replace 1K pull-up for a 10K. Done!

Best regards
Bruno
 

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thanks for that! :cheers:

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yup, good info! very nice! :cheers:

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