The distance is measured to the closest point (rotated) of the EUT
periphery (including cables) and the mid-point of the antenna.
References:
* CISPR 16-2, clause 2.6.2.3
* FCC 47 CFR, Part 15, clause 15.31(f)
Bob Heller
3M Product Safety, 76-1-01
St. Paul, MN 55107-1208
Tel: 651- 778-6336
Fax: 651-778-6252
===========================================================================
Alex McNeil
<alex.mcneil@ingenicofort To:
"'emc-p...@majordomo.ieee.org'" <emc-p...@majordomo.ieee.org>
ronic.com> cc: (bcc: Robert E.
Heller/US-Corporate/3M/US)
Subject: EN55022
Radiated Test Set up
06/13/2001 03:27 AM
Please respond to Alex
McNeil
Hi Guys,
I have a query regarding how the 3M or 10M emissions set up should be
measured.
EMC Test Houses seem to appply the measurement of the 3M/10M differently
e.g. measurement can be to the front (or rear) edge of the EUT, peripherals
and cables setup with Turntable at 0 degrees. This means that at some point
during Turntable revolutions the EUT will violate the 3M or 10M rule i.e.
the EUT with peripherals and cables will be less than the initial measured
distance during turntable movement.
Should the 3M/10M be measured to the periphery of the EUT after monitoring
the turntable revolution? This would mean that during Turntable movement
the
3M or 10M is not violated with peripherals or cables, but also that the
centre of the setup is always more than 3M/10M.
Any Ideas or better still any simply explained documents (for all EMC test
procedures) that spells this out very precisely.
Best Regards
Alex McNeil
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