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Hi Rudi
I did export a s2p file from latest version 1.5 of the NanoVNA-saver and it was imported right away in the VNWA
It is in the format RI meaning real Imaginary S parameter so why you have no success with the VNWA is a big question mark
I have made a note yesterday about a T-Check file with an extra S at the end of the # line but that is not the case here.
I have a comment about calibration when doing a T-Check.
When the two test cables are connected to the Ch0 and Ch1 it must be S11 reflection calibrate calibrated with the SMA male SOL standards connected to the female female adaptor so it constitutes a female calibration kit and in the NanoVNA-saver the female kit data entered. This way the reflection calibration plane is identical to the male SMA on the Ch0 test cable. In addition the delay of the female female adoptor must be entered in the nanoVNA-saver for thru calibration.
If this methos is not followed the exist serious phase errors between the reflection and transmission measurements and a T-Check will look crazy.
Did you follows those guide lines ??
I will do a test with the R&S T-Check software else as you have the VNWA it is much simpler. Import the S11 and S21 s2p file and copy S11 to S22 as well S21 to S12. The open a custom trace and in the Expression line and do a right click, then the T-Check formula is ready to be loaded and after pressing OK then set the trace to linear magnitude reference to 1 and reference position to 5 and the scale to e.g. 0.1/div which means one division equal to 10% and 0.01 equal to 1% / div
Give the custom trace a Caption name as T-CHK so the trace is name accordingly. You may save the Custum trace for later use
Kind regards
Kurt


-----Oprindelig meddelelse-----
Fra: [email protected] <[email protected]> P? vegne af reuterr@...
Sendt: 6. november 2019 07:08
Til: [email protected]
Emne: Re: [nanovna-users] T-Check for my nanoVNA - Results look excellent below 150 MHz and acceptable up to 300 MHz

On Tue, Nov 5, 2019 at 11:40 PM, Kurt Poulsen wrote:

UPS about the R&S TR-Check have you tried to run in W95 compatibility
mode and as administrator ?

Hello Kurt,

After reading T-Check.pdf from you from 2010-01-31, I tried under Windows 10-64 The Installation files are from 1997.
When trying to start SETUP.EXE it was not possible.
Next I started the MS compatibility check, Windows 8 was recommended, and set.
That does not work too.
Next with administrator rights, no success.

Next try was to install under Windows 7-32. That works.
A test with the provided data file ZVR.S2P works.
But my from NanoVNA-Saver exported, extended S2P file was not accepted.
I could not figure out, what was wrong with the format.

Next I tried VNWA version 36.7.8.1 after reading your text from 2014-01:
How to perform a T-Check for a VNWA Calibration.pdf A test with data file ZVR.S2P works.
But my from NanoVNA-Saver exported, extended S2P file was not accepted.
I could not figure out, what was wrong with the format.

Next I found the spreadsheet from Erik:
Thread: Trying to understand the T-Check outcome of the nanoVNA
/g/nanovna-users/message/3020
T-Check.xlsx (199 KB)
I could not make it to work with my data file.

Then I posted in /g/nanovna-users/message/6502,
asking for help.
Erik provided a new version of his spreadsheet T-Check.xlsx (220 KB)
/g/nanovna-users/message/6505

I imported my data file T-CheckR31.S2P and it worked, see
/g/nanovna-users/message/6517

I will optimise this spreadsheet to accept direct NanoVNA-Saver exported S2P files, without modification.
I read, that in case of a symmetric T-Check hardware setup you could copy to fill last 4 columns:
copy C2-S11Real to C8-S22Real
copy C3-S11Imag to C9-S22Imag
copy C4-S21Real to C6-S12Real
copy C5-S21Imag to C7-S12Imag

73, Rudi DK5FA