Hi Min/Robert, Hopefully I don't ask something very stupid... but I just bought a DSA815 to get some grip on EMI on my boards and also for the fun of learning. I know near field measurement is only an indication of E/H fields and a measured apparent higher (less negative) dB signal is not always a sign of something bad happening. But can we say for signals with a specific +x dB (compared to 'normal' ) the likelihood of it being a bad sign is high in case of a specific height Y above the PCB? gr Rémy

Hi Remy, Great to see you here. Well, it is not a stupid question at all. I would guide you to this article. See <a href="http://emccompliance.co.uk/wp-content/uploads/2022/03/The-magic-Loop-3.pdf" target="_blank">http://emccompliance.co.uk/wp-conten...gic-Loop-3.pdf</a> , section 4. and <a href="https://www.ramayes.com/Data%20Files/Credence%20Technology/NearField_Test_Methods.pdf" target="_blank">https://www.ramayes.com/Data%20Files...st_Methods.pdf</a>

Hi Min, thank you very much! It’s clear to me now <img src="https://designhelp.fedevel.com/core/images/smilies/smile.png" border="0" alt="" title="Smile" smilieid="1" class="inlineimg"> Both articles are very interesting.

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