Hi there. Thanks for joining and responding. The test is very different. It is capturing jitter and analyzing, not the signal itself as you showed. I can share the project file with you.
We indeed used a different method, I guess similar method as per APx jitter documention and to what you're typically doing for all DAC I guess e.g. Jitter Noise & Spectrum (E.g. below). Not sure how to get that specific new measurement as we haven't seen it before..