Charles, If you want to CE mark a component which has no intrinsic value (that is, it must be operated via another component),is CE marking illegal? Also, is a Declaration of Incorporation (DOI) needed instead of a Declaration of Conformity (DOC)?
--- "Grasso, Charles (Chaz)" <[email protected]> wrote: > > As far as I know, the EU has not adopted the insane > FCC Class B compliance > process. So there is NO procedure for marking a > motherboard as a "compliant" > unit. > > What you can do is test it in a system (just like > the old days) and mark the > motherboard based on that test ALONE. > > If I understand your requirement, you are looking to > adopt the infamous > CE+CE=CE > approach. Again, this has proven NOT to work > especially for emissions. > > Comments: > > (a) there is no requirement to test "open chassis" > and that we can CE mark > the > board as compliant as long as we have shown that it > can meet the class B > levels > within a chassis of our choosing. > > RESPONSE: There is no requirement NOR is there a > process for "open chassis" > testing. > The EMC Directive (nor the guidelines) can help you > here. > > > (b) we are still required to perform "open chassis" > tests, however, there is > no > 6dB margin and the board will have to meet the EN > 50022 class B levels with > the > cover off. > RESPONSE: Nonsense. There is NO "open chassis" test. > > WARNING: Be careful. The next thing the testhouse > will try is the TCF route. > > Ugh. > > > Thank you > Charles Grasso > Advisory Engineer > StorageTek > 1 StorageTek Drive > Louisville CO 80027 M/S 4247. > Tel:303-673-2908 > Fax:303-661-7115 > email:[email protected] > RMCEMC Web Site: > http://www.ewh.ieee.org/r5/denver/rockymountainemc/ > > > > > -----Original Message----- > From: [email protected] > [mailto:[email protected]] > Sent: Tuesday, August 24, 1999 2:44 PM > To: [email protected] > Subject: CE Marking requirements > > > > Well group, if you care to help out another American > confused by the > specific > requirements for Europe, I would appreciate it. I > seem to be getting > varying > stories from different test houses as to what is > required for one of our > products. These are big enough players that pitting > one against another is > not > something I want to undertake at this point. > > We currently manufacture a motherboard which is sold > both by itself and with > a > chassis which includes power supply, hard drive and > floppy. We are > currently > going through our internal EMC validation to ensure > that we meet both FCC > Class > B and EN 55022 Class B levels. Our experience on > previous products has been > if > we clear emissions, we haven't had problems in other > areas, but we'll be > testing > to EN 55024 of immunity, as well. > > The issue arises when we discuss testing of the > system versus testing of the > motherboard alone. Within the US, the FCC > regulations permit an additional > 6dB > margin for "open chassis" measurement, so long as > those frequencies fall > back > within the class B levels with the cover on. This > does not appear to be a > problem for our product. > > We have been told by different parties that for > Europe, > > (a) there is no requirement to test "open chassis" > and that we can CE mark > the > board as compliant as long as we have shown that it > can meet the class B > levels > within a chassis of our choosing > > and > > (b) we are still required to perform "open chassis" > tests, however, there is > no > 6dB margin and the board will have to meet the EN > 50022 class B levels with > the > cover off. > > We're having a little more difficulty making things > work using the (b) > approach. > I am specifically concerned about staying far enough > below the levels that > we're > not going to potentially pass today and fail 6 > months from now due to a > slight > drift in tolerances of components, test equipment or > test engineers' > dispositions. > > I have the texts of the EMC directive, as well as > the test requirements > specified in the above documents and I'm happy to > wade through them if you > can > point me in the right direction. I will be heading > that direction in the > next > day or two if I don't receive a response. I'm > hoping, however, that someone > in > the group can shave a few hours of exceptionally > captivating reading from my > life by pointing me in the right direction. > > Regards, > > Michael Garretson > Compliance Engineer > RadiSys Corporation > > > > --------- > This message is coming from the emc-pstc discussion > list. > To cancel your subscription, send mail to > [email protected] > with the single line: "unsubscribe emc-pstc" > (without the > quotes). For help, send mail to [email protected], > [email protected], [email protected], or > [email protected] (the list > administrators). > > > --------- > This message is coming from the emc-pstc discussion > list. > To cancel your subscription, send mail to > [email protected] > with the single line: "unsubscribe emc-pstc" > (without the > quotes). For help, send mail to [email protected], > [email protected], [email protected], or > [email protected] (the list > administrators). > > > __________________________________________________ Do You Yahoo!? Bid and sell for free at http://auctions.yahoo.com --------- This message is coming from the emc-pstc discussion list. To cancel your subscription, send mail to [email protected] with the single line: "unsubscribe emc-pstc" (without the quotes). For help, send mail to [email protected], [email protected], [email protected], or [email protected] (the list administrators).
