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EEVblog #933 - Keysight U1272A EMC Issue

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EEVblog:
A viewer found an EMC issue with the Keysight U1272A multimeter
Dave confirms both conducted and coupled issues and finds some spooky action at a distance!
Comparisons with other meters confirm they don't have the same issue.

Barny:
That explains the funny readings at my bench, when my mill is running or the LED - benchlight is running.
I always thought some of the EM-crap is inducting into the unshielded wires.

Thanks for the information.

riyadh144:
Okay, I am probably wrong but from the proximity when you were moving the wire around and from the data sheet the frequency response and the THD, I think MAX4611 is the problem, and there is probably an antenna below it.

https://datasheets.maximintegrated.com/en/ds/MAX4610-MAX4612.pdf

station240:
Disappointed Dave didn't whip the cover off to figure out which component is most sensitive to EMC.

EEVblog:

--- Quote from: Barny on October 12, 2016, 06:24:56 am ---That explains the funny readings at my bench, when my mill is running or the LED - benchlight is running.
I always thought some of the EM-crap is inducting into the unshielded wires.

--- End quote ---

Interesting, can you reproduce it?

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