1. Rick
  2. MIDI Specifications
  3. Sunday, 21 July 2019
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A member of the MIDI Controllers FB group asked the following question and I thought the resolution would be good info to have going forward:

[Does anyone know] how to convert the new midi 3,3volt (midi out) signal so it can be read by a Tyros 4 that only reads the ‘old’ type 5volt signal?
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The Tyros 4 has a very standard MIDI implementation:

Tyros4 MIDI A.png

The 6N137's output side uses a 5 V supply, but its input works with any 5 mA current at a forward voltage of about 1.5 V. Any standard-compliant MIDI output is able to drive that, even when using 3.3 V.

Why are you asking this question? Is there an actual problem?
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  1. more than a month ago
  2. MIDI Specifications
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I was asking for a fellow member of the MIDI Controllers Facebook group. He has since returned the unit to the seller. I just now asked if there was a problem with the unit. Awaiting response.
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  1. more than a month ago
  2. MIDI Specifications
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