Richard,
Further clarification to this question was provided by the addition of the
following note at the end of article 3.6 of CISPR 22:1997 as part of
Amendment 2 which was published in October of last year.
"NOTE A port generally intended for interconnection of components of an ITE
system under test (e.g. RS-232,
IEEE Standard 1284 (parallel printer), Universal Serial Bus (USB), IEEE
Standard 1394 ("Fire Wire"), etc.) and
used in accordance with its functional specifications (e.g. for the maximum
length of cable connected to it), is not
considered to be a telecommunications/network port under this definition."
I haven't seen an EN version of this amendment yet, but CENELEC should be
coming with it one of these days.
You can purchase a copy of the entire amendment, which adds information on
"multifunction equipment", from the IEC web page at http://www.iec.ch .
Ghery Pettit
Intel
From: richwo...@tycoint.com [mailto:richwo...@tycoint.com]
Sent: Thursday, January 30, 2003 10:32 AM
To: emc-p...@majordomo.ieee.org
Subject: EN55022:1998 and telecom ports
EN55022:1998 defines telecommunication ports as " Ports which are intended
to be connected to telecommunications networks (e.g. public switched
telecommunication networks, integrated services digital networks), local
area networks (e.g. Ethernet, token ring) and similar networks."
Since "similar networks" are included, it would seem that dissimilar
networks are excluded. What distinguishes a similar network to a dissimilar
network? What are some examples of dissimilar networks that are not
included?
Richard Woods
Sensormatic Electronics
Tyco International
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