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EVLVIPGAN65DF radiated EMI

Gaston
Senior

EVLVIPGAN65DF application note states that the provided reference design is compliant with IEC55022 Class B conducted EMI. How about radiated EMI? Is there any measurement in this regard? 

4 REPLIES 4
Gaston
Senior

Any feedback from ST support?

Thanks in advance,
Gaston

Gaston
Senior

I assume that no tests have been carried out for radiated emissions.

Will there be any?

Hi,

What you expect from radiated emissions on a open development board?

As this kind of measurement is usually done on finished product, enclosed and screened and ready for the market.

Did you ever check the radiation on an open board on the table?

I did.... having one SPI connection, 20cm long to the connected TFT, setting the CPU PIN to high speed: with H743 CPU see full and strong output to > 1.5 GHz.

Reduced pin speed and a damping resistors in the connection reduces it a lot.

So as long as the product is not in final state and in the enclosure, not much sense in measurement of radiated emissions.

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What you expect from radiated emissions on a open development board?

I wouldn't expect anything if it weren't for the fact that the document AN6240 states that EVLVIPGAN65DF is compliant with IEC55022 Class B conducted EMI. I just wonder why it doesn't say anything about radiated EMI.