I've been looking at scikit-rf to do the TRL calibration and it mentions using the 'switch terms' to improve the calibration. I'm just wondering, how do i read the switch terms from the HP8510C, which appear to be for source port 1: ratio a2/b2 and for source port 2: a1/b1?
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During measurement i can get the s-parameters ok, but it's not clear how you can measured these ratios, or measure a1, b1, a2, b2 seperately and calculate the ratios in the PC. If i can get that right i'll be able to do all calibratoin in the PC, which would be much faster than in the HP8510C.
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Thanks, N
