EMC compliance...

FORD

Hello All,
Just wondering if any testing has been done for EMC compliance at different clock speeds on the propeller.
Cheers,
Chris, West Oz

Paul Baker

Chip and/or Jeff can more fully answer this, but as of a week ago no formalized EMI characterizations have been made. In theory it should put off quite abit, since the slew rate is very high (I think pin transition is ~1 ns), but it doesn't seem to cause much real world interference (no interference was caused on a television adjacent to the board). But the demo board is a 4 layer PCB which helps to minimize EMI.

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·1+1=10

FORD

Thanks Paul,
My·concern is, that here in Australia, before any elctrician etc can install any new equipment, it must have a current EMC certification. We have to submit·any new·equipment to testing authorities where very detailed performance tests are undertaken. (They don't just put it next to a telly, but I wish they would).

With our application, we dont need super high speed, si I guess we could quiten it down a bit.

I look forward to some actual figures.

Cheers,

Chris, West Oz.