Kevin, A Class A device has labeling and user manual requirements that cautions the user not to use the device in a residential environment. That is, the user has been warned by the USB HUB manufacturer to not use the device outside commercial or industrial environments.
Your part in the warning is covered in clause 15.27. It indicates to caution the user that using accessories that may cause harmful interference may void the user's right to operate the equipment. By cautioning the user to use only Class B accessories with the device allows you to market the product as Class B. If you categorize your device as a computer peripheral it is subject to FCC Declaration of Conformity labeling and manual requirements. Recommendation: Since you know the device does not meet the FCC requirements with a Class A peripheral, insure that the device meets Class A when used with Class A peripherals. Michael Peters From: [email protected] [mailto:[email protected]]On Behalf Of Kevin Newland Sent: Friday, August 27, 2004 7:13 PM To: [email protected] Subject: FCC class A and B Hello All, We have a product that gets its power from a USB hub. In all cases the end user buys a USB hub from anyone he likes and uses it to power our product. I.e. we have no control over as to whose USB hub is used with our product. We know that our product on its own passes FCC class B emissions, but there are USB hub on the market that are only rated as class A and when these are used with our product we only pass class A. This will give us a marketing disadvantage. I suppose my question is that what is the most efficient and legal way to be able to market our product as a class B? Can we add a statement of some kind in our user manual to say that the product on its own satisfies class B? Is that acceptable by FCC? thanks Kevin __________________________________ Do you Yahoo!? New and Improved Yahoo! Mail - Send 10MB messages! http://promotions.yahoo.com/new_mail 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/listserv/request/user-guide.html List rules: http://www.ieee-pses.org/listrules.html For help, send mail to the list administrators: Ron Pickard: [email protected] Dave Heald: [email protected] For policy questions, send mail to: Richard Nute: [email protected] Jim Bacher: [email protected] All emc-pstc postings are archived and searchable on the web at: http://www.ieeecommunities.org/emc-pstc 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/listserv/request/user-guide.html List rules: http://www.ieee-pses.org/listrules.html For help, send mail to the list administrators: Ron Pickard: [email protected] Dave Heald: [email protected] For policy questions, send mail to: Richard Nute: [email protected] Jim Bacher: [email protected] All emc-pstc postings are archived and searchable on the web at: http://www.ieeecommunities.org/emc-pstc
