UNI-T UT210E offset adjustment part 1: The theory behind it

If you have a UT210E clamp meter, you may have wondered what the 3 trim pots inside the meter do and how they can be used to reduce the offset displayed by the meter when doing DC current measurements. In this, part 1 of a two-part video, I'll explain how the current measurement in the UT210E works, and what role the trim pots play. In the second part I present 2 procedures for adjusting the trim pots

00:00 intro 01:06 inside the clamp 03:23 measuring current 05:29 simple simulations 10:41 earth magnetic field 13:14 complex simulations 22:19 wrap-up ... https://www.youtube.com/watch?v=nGJ65PrxkFs