Robert,
Reference and therefore preferred test distance for measurements
to CISPR 22 is 10 meters for both classes A and B.
Measurements at closer distances, including 3 meters are acceptable.
In a case of dispute results from 10 meters will take precedence.
Mirko Matejic
Coauthor of CISPR 22, Editions 1 and 2
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From: robert.m...@engineers.com
To: emc-p...@ieee.org
Subject: Distance of Measurements
List-Post: emc-pstc@listserv.ieee.org
Date: Wednesday, June 11, 1997 4:11PM
For measuring emissions per CISPR 22B what is the proper distance for
the placement of the antenna?
Is it 3m? or 10m?
[I'm running across reputable labs that claim there is nothing wrong
with measuring everything at 3m, just like FCC B.]
- Robert -
robert.m...@engineers.com
AJM Electronics
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