AnsweredAssumed Answered

Updating error terms after measurement

Question asked by jem on Sep 5, 2012
Latest reply on Sep 27, 2012 by Dr_joel
Hi everyone,

I am trying to do something very simple I thought but I don't seem to get it to work and I wonder if their is things that I am not aware off.

I do a 1 port calibration using an E-Cal then I request (via GPIB) and save the 3 error terms on .txt files. (Directivity, Reflection Tracking and Source Match) 

I take a reflection coefficient measurement of a device, save the data (R,I format), then I turn the correction OFF and I save the uncorrected data. 

Finally in Matlab I use the uncorrected data and I apply the error terms based on 1 port error model but I do not get the same result as the corrected one.

Does the PNA do something more than the 1port error correction?
Are the error terms given by the PNA exactly the same one that it uses?

Thanks for your help.

Jeremie  

Outcomes