The NanoVNA will measure inductance over a frequency range, which you
configure in the sweep settings, just like with other measurements.
In theory, the inductance does not depend on the frequency, but the
inductive reactance does.
I'd like someone to correct me if I'm wrong, but from what I can see, VNAs
can't actually directly measure inductance (is there anything that can?),
and instead measures impedance, and then estimates inductance from
impedance. Since everything is an RLC circuit (in coils, don't forget the
resistance of the conductor, and the capacitance between the turns, which
affects the coil's self-resonant frequency), the estimate of the inductance
will change with frequency, sometimes drastically (again, keep the
self-resonant frequency in mind).
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Its a fact, that inductance value, vary according to frequency.
How does the nanovna measure ?
Does it use the saved selected frequency range inside the nano ?
