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Dynamic Accuracy Plot - Need Help Reading

Question asked by VNA123 on Jul 9, 2015
Latest reply on May 4, 2016 by Andrew003
Hi,

I'm using the VNA uncertainty excel tool to get a glimpse of the uncertainty of the VNA I'm using. It's the N5245A Option 400 VNA. Using N4691B ECAL. I'm having trouble understanding why there are multiple lines in the dynamic accuracy graph. This seems sort of like a Pout/Pin graph that they used in college to show 1dB compression points. But why are there multiple lines? Does each line represent the power level at calibration? I've attached the graph I'm looking at. If you could give me a short simple breakdown of how to read this graph I would greatly appreciate it. And fyi, I've looked in Dr. Joel's book and other resource to try and figure it out and I'm just not sure.

Thanks,
KTB  

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