On Fri, 16 June 2000, [email protected] wrote:
 
> Can someone explain to me why a ground plane is required in the test setup for
> EN 61000-4-8 (power frequency magnetic fields)?
> 
> Thanks,
> Bob Heller
> 3M Company
-----------

Bob,

Good question! The ground plane is described in the EN 61000-4-8 standard, but 
not used in many EMC testing labs. People cannot figure out the difference if 
using it in real test. However, there must be a reason to use it when the 
standard was written. 



Thanks.
Best Regards,
Barry Ma    <[email protected]>
ANRITSU    www.anritsu.com
Morgan Hill, CA 95037
Tel. 408-778-2000 x 4465
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