Remember that if the product can be deployed at or on the customer premises and needs to meet NEBS, that the 10/100 baseT intra-building port is a Type 4 interface and must pass section 4.5.16 of GR-1089-CORE which applies a 120V 25 amp power fault to the leads.
Jim Jim Wiese NEBS Project Manager/Compliance Engineer ADTRAN, INC. 901 Explorer Blvd. P.O. Box 140000 Huntsville, AL 35814-4000 256-963-8431 256-963-8250 fax [email protected] -----Original Message----- From: Andy White (EWU) [mailto:[email protected]] Sent: Monday, July 22, 2002 5:51 PM To: 'Muhammad Sagarwala'; [email protected] Subject: RE: NEBS compliance for 100baseT / 1000base T Ethernet usually does not connect to telecommunications outside plant/serve 'off premises' equipment. Hence 'Intra-building' surge can be applied to the ENET lines. AC power cross does not apply for Intra-building cable connections. [Also, If you use shielded cable and ground at both ends - Intrabuilding surge does not apply.] Intra-building surge for ENET is possible, if using non-shielded cable. Andy ____________________________________ Andy White, Staff EMC Engineer Ericsson Wireless Communications Inc. San Diego, CA 92121 Tel 858 332 6214 / 877 877 7799 ext 26214 Fax 858 332 7311 e-mail [email protected] ____________________________________ -----Original Message----- From: Muhammad Sagarwala [mailto:[email protected]] Sent: Monday, July 22, 2002 3:21 PM To: [email protected] Subject: NEBS compliance for 100baseT / 1000base T Hello Gurus, I am new to this list so pardon me if my questions sound naive. The question I had was, for nebs compliance we need to pass power cross and lightening tests. For boards with copper ports (100baseT and 100base T), is it possible to use rj45 connectors with integrated magnetics and still get pass these tests. Has anybody done that - if yes, is it possible to share the method. I believe there are components (e.g. sedactors) one can use, but those are capacitve and might impact the signal integrity. Also, mostly that kind of stuff is used on the line side of the transformer. I am just a little bit hesistant to put in on the secondary side... Any input would be highly appreciated... Thanks Muhammad
