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My apologies for not starting this discussion sooner.
I understand the there is a lot of push-back for a 50G interface 32dB@14Ghz.
I would guess the reason is power related.
My argument is that if the limit is 25dB or 28dB, a significant amount of retimers will be required. And therefore the power per link will be almost double anyway. So power isn’t an argument.
However, I would conceded to a lower loss level if we all agreed to completely define the retimer block and recognize it as a valid block function.
Take care
Joel
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