A recent discussion online on the use of this facility in some model or other NanoVNA/firmware combination quickly ran to over 100 posts, and you might think it is really difficult, or plain does not work.
Let me say I am leery of built in features that invite users to perform something they do not understand, and may misinterpret the outcome.
Lots of the discussion ran to explaining why measurement of a sample of coax would be out by 5% or more, lots of pseudo tech discussion about age related, contamination related, quality related explanations for the measurement, things which might cause the measurer to condemn the sample, to discard it.
Well, you would want to be pretty confident in yourself to make that call, given that the explanation might well be measurement error.
I don’t use this facility, so I am quite unfamiliar with it, and there is no documentation, so one make make an informed guess as to how to use it.
Let’s measure… Continue reading NanoVNA – trying the DiSlord built in cable length measurement feature