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DS90UH941AS-Q1: Acquiring FPD-Link Jitter Measurements

Part Number: DS90UH941AS-Q1

Hi Team,

For the 947 serializer, in order to evaluate the FPD-Link, there is a diagram in the datasheet that shows how to take the appropriate measurements:

However, in the 941AS datasheet, the diagram seems to have changed:

Can you please help me understand why the two diagrams are different. It looks like 947 is taken differentially while 941AS is taken single-ended, but why is that?

Thanks!

Jared