What about the other phenomenon mentioned in the undermentioned topic:viewtopic.php?f=101&t=28506&p=312422#p312422
You, as creator of the YPbPr adaptor, perhaps measured the sync signal using oscilloscope. Shall we use a resistor to protect our devices, or it is unnecessary/useless? Or does it depend on the actual core?
Something similar would be nice and composing (the Enterpise 128 has also TTL level sync signals):https://enterpriseforever.com/hardware/ ... art-cable/