Probing question
Do you have a probe that can plug into a VNA and test/record the impedance of traces on a PCB? One with very small tips on one end and an “SMA” connector, “APC” connector, “N” connector, or even a “BNC” connector?
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A VNA is capable, but using 2 measurements, short and open. See this article:
https://www.edn.com/simple-trick-to-measure-plane-impedance-with-a-vna/
A TDR is a more direct measurement, using our J2154A and an oscilloscope:
https://www.signalintegrityjournal.com/articles/1852-the-goldilocks-tdr