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measure waves at Reference Plane

Question asked by jhujhujhu on Jan 25, 2010
Latest reply on Jan 25, 2010 by Dr_joel

I'm trying to do receiver measurements, but using the 2-port calibrations to correct the raw R/A/B data to be the actual waves at the reference plane.
(as for the reason for doing this rather than the S-param measurements, I can explain if it'll help solve my problem)

But currently, applying the CAL to correct the R/A/B data is not allowed. The VNA complains that CAL is needed, eventhough I just done it. (in PNA-L N5230A)
As far as I know, the VNA saves the CAL data, which contain the error correction model, ie. 10-term error coeff at each sweep point.
It seems to me that it should be possible to correct the R/A/B data upto the reference plane.

I tried to view the CAL data saved in the VNA, ie. the .csa and .pcs file. (see attached file)
They seem to be encrypted, but the format indicates they might be the error coeff.

Thanks in advance.