Re: T-Check for my nanoVNA - Results look excellent below 150 MHz and acceptable up to 300 MHz
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Hi Rudi
Super you are on the way now. I just did a T-Check for some N cal kit work presently working on and it was below 1 % all the way. That is the magic of 12 term error correction (actually 10 term as isolation not done) Regarding the listType= lin I loaded into a text editor a s2p file I had saved long ago from the VNWA to study the header of the Touchstone file and there it was. It is just a comment line so why it had any impact I do not know I checked the Touchstone specification version 1.1 and it is not part of the specification at all. Kind regards Kurt -----Oprindelig meddelelse----- Fra: [email protected] <[email protected]> P? vegne af reuterr@... Sendt: 6. november 2019 16:34 Til: [email protected] Emne: Re: [nanovna-users] T-Check for my nanoVNA - Results look excellent below 150 MHz and acceptable up to 300 MHz ! ListType=Lin (This addition was probably not needed)Hello Kurt, This 'ListType=Lin' parameter was necessary :-) Question: where did you found that parameter 'ListType=Lin'? I looked in specification touchstone_ver2_0.pdf, and in VNWA_HELP_36.7.8.pdf and in How to perform a T-Check for a VNWA Calibration.pdf and did not found it. Now it works, see attached screen shot VNWA_nanoVNA-Saver_T-Check.png Thank you very much for this hint and you help. 73, Rudi DL5FA |
Kurt Poulsen