Hi Scott, This is not shown in the standards, but I have seen this requirement placed on products where the power adapter is an optional item e.g. a device that can be powered either by PoE or an external AC/DC adapter.
The product will have been certified using a LPS, so the manufacturer must ensure that, when a user sources a suitable PSU, the integrity of the certification is maintained. Cheers, Chris Allen Scott Douglas <[email protected]> Sent by: [email protected] 17/09/2009 02:07 To "'EMC PSTC'" <[email protected]> cc Subject Looking for Source of Requirement To All, I find this statement is a user manual: "This product is intended to be supplied by a Listed Power Unit, marked with “Limited Power Source,” “LPS” and “Class II” on the unit, and output rated ..." The product is usually approved to either ITE (60950) or to A/V (60065) standards. I am curious to know where this requirement comes from, specifically page, paragraph, and rule. I looked in both and did not find it. Can anyone point me to a source? As always, thanks in advance for your help. Kind regards, Scott - This message is from the IEEE Product Safety Engineering Society emc-pstc discussion list. To post a message to the list, send your e-mail to <[email protected]> All emc-pstc postings are archived and searchable on the web at: http://www.ieeecommunities.org/emc-pstc <http://www.ieeecommunities.org/emc-pstc> Graphics (in well-used formats), large files, etc. can be posted to that URL. Website: http://www.ieee-pses.org/ <http://www.ieee-pses.org/> Instructions: http://listserv.ieee.org/request/user-guide.html <http://listserv.ieee.org/request/user-guide.html> List rules: http://www.ieee-pses.org/listrules.html <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]> Please consider the environment before printing this e-mail. ________________ CONFIDENTIALITY NOTICE: This e-mail message, including any attachments, is being sent by 3Com for the sole use of the intended recipient(s) and may contain confidential, proprietary and/or privileged information. Any unauthorized review, use, disclosure and/or distribution by any recipient is prohibited. If you are not the intended recipient, please delete and/or destroy all copies of this message regardless of form and any included attachments and notify 3Com immediately by contacting the sender via reply e-mail or forwarding to 3Com at [email protected].
