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What effect would a bad cal kit device have on my measurements?

Question asked by crow on Dec 23, 2013
Latest reply on Dec 27, 2013 by drkirkby
Hey all,

So, I have an 85032B cal kit that was returned from calibration by an outside vendor.  They measured the phase of the female open and it failed above 1 GHz.  Now I'm doing a reverse trace to see what I used this kit for, but I have to find a way to quantify how an error in the phase of the open device effects the accuracy of any amplitude measurements (VSWR, insertion loss, etc).

In my very basic understanding of VNAs, I know the readings on the display are all derived from the raw readings taken (real/imaginary numbers) and have both a phase and magnitude component.  So from what I can tell, a bad device in a cal kit would effect a number of different measurements.  What I can't figure out at this point is to what extent.

Any help or further education anyone here can provide would be greatly appreciated.

Thank you!