On Tue, Dec 10, 2024 at 10:09 AM, <jskinner58@...> wrote:

Looking to measure inductance but most interested in self resonance frequency.
Resonance will be about 2 MHz I am guessing. Have it across Port1/S11 as seen
in the videos but don't have display of anything like in the videos.

In order to make a measurement of an inductor's parameters like inductance, reactance and resistance vs frequency and self-resonant frequency the easiest method is the S11 shunt method using just CH0 (Port 1) on the NanoVNA. You need to do the following:
- Construct a suitable test jig for the type of device you are measuring (SMD, leaded part, large part etc.)
- Connect a short cable from CH0 on the NanoVNA to the test jig
- Calibrate right at the test jig where the device under test (DUT) is attached to the test jig
- Measure the parameters of interest. For an inductor the self resonant frequency is where the reactance X=0

Measuring inductors and capacitors has been discussed many times in this group and if you search the archives you will find all kinds of discussions about ways to build test jigs, calibration loads for the test jig and how to interpret the results. To get you started here is one I wrote some time ago.

https://groups.io/g/nanovna-users/message/20848

Roger