Hello,
i found several threads on TDR with the VNA6000, but not really what i am looking for.

On the VNA6000-B itself i can setup the TDR measurement on a PCB nicely. But i can not reasonable scale the plot. I can set "reference position" to 0, and "scale/div" = 10Ohm.
then i see the 50ohm trace in the center, but with a bad resolution. if i set "scale/div" to 5 ohm the trace is shifted up and 50ohm is not visible any more.
is there any chance to display a 50 ohm trace with an resolution of e. g. 3Ohm / div?

in the VNA-QT software i did not find any way to display a TDR. There is a "Time to Fault", but i found no way to make a TDR in the VNA-QT software.
Chat GPT is sure this feature is in the Software ... but it seem not in my version (downloaded v1.1 from the official site).

for the nanoVNA-Saver i get a TDR plot, but can not scale at all and can not set a marker on it.

So any help on how to make a reasonable TDR measurement with any setting or software is highly appreciated.

thanks a lot

Hermann