Brian, At one time there was a Bellcore (pre-Telcordia) standard for 48 hours burn-in at something like 49C (RH uncontrolled). Nortel used to have bays and bays of equipment undergoing burn-in due to this requirement.
I have been trying to find that standard for a while without any luck so a lead would be helpful. Jeff, Other than that mythical standard (and perhaps faulty memory), there are requirements/guidelines for high-temp and temp cycling in GR-468 but that is only for optical modules. I've never seen anything outside of the telecom space that *requires* burn-in. This has always been a cost/benefit analysis of how much testing will weed out DOA and in-warranty failures. Companies are certainly free to set their own screens. ...Marko From: [email protected] [mailto:[email protected]] On Behalf Of Brian O'Connell Sent: Tuesday, July 15, 2008 2:49 PM To: [email protected]; [email protected] Subject: RE: Immunity Failures caused by System Burn-In Yes, Bellcore/GR-Core/Verizon/SBC/NEBS all have various reliability standards and requirements, depending on component type and end-use installation. luck, Brian From: [email protected] [mailto:[email protected]]On Behalf Of jeff collins Sent: Tuesday, July 15, 2008 2:32 PM To: [email protected] Subject: Re: Immunity Failures caused by System Burn-In Group, We have pinned down some immunity failures that are caused by our system burn-in process, which is rather robust. Are there any specific Industry standards for the Burn-in of IT or Telecom electronic equipment? Thanks in advance! Jeff Collins Regulatory Compliance & Reliability - This message is from the IEEE Product Safety Engineering Society emc-pstc discussion list. Website: http://www.ieee-pses.org/ To post a message to the list, send your e-mail to [email protected] Instructions: http://listserv.ieee.org/request/user-guide.html List rules: http://www.ieee-pses.org/listrules.html For help, send mail to the list administrators: Scott Douglas [email protected] Mike Cantwell [email protected] For policy questions, send mail to: Jim Bacher: [email protected] David Heald: [email protected] All emc-pstc postings are archived and searchable on the web at: http://www.ieeecommunities.org/emc-pstc CONFIDENTIALITY This e-mail message and any attachments thereto, is intended only for use by the addressee(s) named herein and may contain legally privileged and/or confidential information. If you are not the intended recipient of this e-mail message, you are hereby notified that any dissemination, distribution or copying of this e-mail message, and any attachments thereto, is strictly prohibited. If you have received this e-mail message in error, please immediately notify the sender and permanently delete the original and any copies of this email and any prints thereof. - This message is from the IEEE Product Safety Engineering Society emc-pstc discussion list. Website: http://www.ieee-pses.org/ To post a message to the list, send your e-mail to [email protected] Instructions: http://listserv.ieee.org/request/user-guide.html List rules: http://www.ieee-pses.org/listrules.html For help, send mail to the list administrators: Scott Douglas [email protected] Mike Cantwell [email protected] For policy questions, send mail to: Jim Bacher: [email protected] David Heald: [email protected] All emc-pstc postings are archived and searchable on the web at: http://www.ieeecommunities.org/emc-pstc
