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
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
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