Hello,
For Emisssions, I think the standard you may want to look at is
EN55022(1998) which defines telecommunicaiotns ports as those connected to
telecommunications networks(POTS, ISDN, ETC) and Local Area Networks. As for
the Surge tests, there is a subnote under 55024 that applies surge tests to only
those cables that leave the building. I hope this helps.
David Heald
Guy Story wrote:
I am looking to see what the general conception is on I/O port conducted
emissions and surge immunity is. The company I work for manufactures
various types of network cards. Some of these tie to the outside word
(public network) and others are LAN based. I can see performing the testing
on ISDN and other style devices but not to a device, say and Ethernet card
or a device, that does not access the public network directly. I have not
read over the CISPR 24 document yet but based on what I have been told, the
spec is vague on the areas of I/O ports and the outside world.
Regards,
Guy Story, KC5GOI
Compliance Technician
Interphase Corporation
Dallas Texas
phone: 214.654.5161
fax: 214.654.5406
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