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Senior EMC Engineer
Ericsson Wireless Communications Inc.
San Diego
CA
-Original Message-
From: Russell [mailto:r@totalise.co.uk]
Sent: Wednesday, February 27, 2002 1:41 AM
To: emc-pstc
Subject: EMC Emissions Safety Margins
What safety margin below the statutory limits for emc emiss
[mailto:owner-emc-p...@majordomo.ieee.org]On Behalf Of Russell
Sent: Wednesday, February 27, 2002 1:41 AM
To: emc-pstc
Subject: EMC Emissions Safety Margins
What safety margin below the statutory limits for emc emissions should one
aim
to achieve to ensure all product samples are likely to pass when a
: John Barnes [mailto:jrbar...@iglou.com]
Sent: Thursday, February 28, 2002 12:39 PM
To: emc-p...@majordomo.ieee.org
Subject: Re: EMC Emissions Safety Margins
Russell,
At IBM and Lexmark, our EMC department was comfortable if one unit
showed at least a 3dB margin between the measured emissions and the
Russell,
At IBM and Lexmark, our EMC department was comfortable if one unit
showed at least a 3dB margin between the measured emissions and the
specified test limits. If we were a little closer than that, and unable
to improve the margin for whatever reason, they would have us test two
more units
What safety margin below the statutory limits for emc emissions should one aim
to achieve to ensure all product samples are likely to pass when a single,
peraps two, samples only have been tested.
Are there any hard and fast rules?
Is being just below the limits considered good enough?
Thanks
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