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On Sun, Mar 5, 2023 at 11:56 AM, <btomek@...> wrote:

By the way, can I find somewhere a simple formula, one for the dummies, how to
calculate this calibration correction?
I simply have uncalibrated S parameters for 4 measurements:
- Open, Short, Load
- DUT
I want to correct the DUT measurement using these OSLs.
I looked through the file "NanoVNA traces and formulas.doc" and did not find
this there. Maybe there is a newer version of this file somewhere that
contains this, or is it somewhere else?

The calibration algorithm takes a bit of effort to understand. It was discussed in a previous series of posts.
/g/nanovna-users/topic/68975032?p=Created%2C%2C%2C20%2C1%2C0%2C0

There is also a paper by Rytting that describes the one port SOL calibration. You need to solve 3 equations with 3 unknowns and then use the error terms to adjust the measured gamma to get the actual gamma.

Roger