As the standard says (EN 55022 : 2006, 4.1, NOTE): "The domestic environment is an environment where the use of broadcast radio and television receivers may be expected within a distance of 10 m of the apparatus concerned."
Jon Larkin ----- Original Message ----- From: < <mailto:[email protected]> [email protected]> To: "Administrator" < <mailto:[email protected]> [email protected]> Cc: < <mailto:[email protected]> [email protected]>; "John Woodgate" < <mailto:[email protected]> [email protected]> Sent: Thursday, April 26, 2007 3:58 PM Subject: RE: Digital media reader Class A or B > Are mobile phones considered as receivers? If so then there is no place on > the earth without a mobile phone (receiver) which means there is no Class A > at all. > > > Sincerely > > K.Balasubramanian > Project Leader - Hardware. > > > > "Administrator" > < <mailto:Administrator@ce> Administrator@ce > -test.info> To > Sent by: < <mailto:[email protected]> [email protected]>, > <mailto:[email protected]> [email protected] "John Woodgate" > < <mailto:[email protected]> [email protected]>, > < <mailto:[email protected]> [email protected]> > 04/26/2007 08:00 cc > PM > Subject > RE: Digital media reader Class A or > B > > > > > > > > > > > In addition to that, in the new EMC directive to > come into force per July 20th 2006 the Class and target environment are > to be marked on the > equipment (packing) as well as the clause (if applicable): > Class A: not for residential operation. > (or something with the same impact). > > Class A ITE has been a problem within > the EC for a long time, and the new directive was > to make an end to that. > > But: you have until July 20th 2009 to go > with the classic EMC directive 89/336/EC > > Regards, > > Ing. Gert Gremmen > Approvals manager > ------------------------------------------------------------------------ > ------------ > > ce-test, qualified testing bv > + ce marking > + Independent Consultancy Services > + Compliance Testing and Design for CE > according to: > - Electro magnetic Compatibility 89/336/EC > - Electrical Safety 73/23/EC > - Medical Devices 93/42/EC > - Radio & Telecommunication Terminal equipment 99/5/EC > > + Improvement of Product Quality and Reliability testing > > Web: <http://www.cetest.nl> www.cetest.nl (English) or <http://www.ce-test.nl> www.ce-test.nl (Dutch) > > Phone : +31 10 415 24 26 > Fax : +31 10 415 49 53 > ------------------------------------------------------------------------ > ------------ > This e-mail and any attachments thereto may contain information that is > confidential and/or protected by intellectual property rights and are > intended for the sole use of the recipient(s) named above. Any use of > the > information contained herein (including, but not limited to, total or > partial reproduction, communication or distribution in any form) by > persons other than > the designated recipient(s) is prohibited. If you have received this > e-mail in error, please notify the sender either by telephone or by > e-mail and delete the material from any computer. Thank you for your > co-operation. > > -----Original Message----- > From: <mailto:[email protected]> [email protected] [mailto:[email protected]] On Behalf Of > <mailto:[email protected]> [email protected] > Sent: Thursday, April 26, 2007 4:24 PM > To: John Woodgate; <mailto:[email protected]> [email protected] > Subject: Re: Digital media reader Class A or B > > Dear All, > Below is a link that lists ethernet switches that have Class A > compliance. I am not clear how this is being sold in the Europe market. > > <http://www.foundrynet.com/pdf/ds-ei-cf-g.pdf> http://www.foundrynet.com/pdf/ds-ei-cf-g.pdf > > Sincerely > > K.Balasubramanian > Project Leader - Hardware. > > > > > John Woodgate > > < <mailto:[email protected]> [email protected] > > o.uk> > To > Sent by: <mailto:[email protected]> [email protected] > > <mailto:[email protected]> [email protected] > cc > > > > Subject > 04/26/2007 06:45 Re: Digital media reader Class A > or > PM B > > > > > > > > > > > > > > > > > > In message > < <mailto:OFE7C858A0.2D948A07-ON65257 [email protected]> ofe7c858a0.2d948a07-on652572c9.00427bd1-652572c9.00460...@scmmicro.co.i > n > >, dated Thu, 26 Apr 2007, <mailto:[email protected]> [email protected] writes: > >> We are planning to sell ethernet based smart card reader in >>Europe (German) for attendance recording. There is no intentional >>radiator in this device. Will this need a Class B approval ? My >>understanding is as per CISPR 22 only telecommunication equipment and >>personal computers / accessories used in home environment need Class B >>approval in Europe. >>1. Usage of the device in small offices will be treated as domestic >>use or business / commercial / industrial use. >>2. I believe a device connected to the network server through >>ethernet is not a personal computer accessory. >>3. Ethernet devices are not telecommunication network devices, I >>hope I am correct. >>4. Personal computers used in business / commercial / industrial >>environment require only Class A. >> >> I request your guidance. > > This is a VERY difficult subject. To be CERTAIN of having no problems, > you need to meet Class B. > > The basic problem is that in Europe, 'residential, commercial and light > industrial' are ONE environment, and Class B applies. This is > fundamentally because the concept of 'EMC environment' isn't very > satisfactory, but we don't have any better concept to replace it. > > For example, consider a retail shop - that's a 'commercial' environment, > at the 'social' level, for sure. But if it were also an EMC environment > differing from 'residential' in allowing Class A, equipment in the shop > could interfere with equipment in a house next door to, or a flat > (apartment) above, the shop, because radio and TV receivers would be > within 10 m of the disturbance source. Class A equipment need to be more > than 30 m away from the receivers to make interference sufficiently > unlikely. > > In Europe, it is thus not allowed to operate Class A equipment in the > 'residential, commercial and light industrial' environment, whereas in > the Americas it IS allowed, provided that any resulting interference is > eliminated or sufficiently mitigated. This is, of course, likely to be > costly unless an acceptable re-positioning of the equipment provides a > solution. > > Because of this difference, a realistic view was taken in Europe of the > provisions in CISPR 22, and it was not considered essential to introduce > a Common Modification in EN 55022 to change those provisions. > > This situation continues to result in confusion and doubt, but there > seems to be no practicable resolution. > -- > OOO - Own Opinions Only. Try <http://www.jmwa.demon.co.uk> www.jmwa.demon.co.uk and <http://www.isce.org.uk> www.isce.org.uk > There are benefits from being irrational - just ask the square root of > 2. > John Woodgate, J M Woodgate and Associates, Rayleigh, Essex UK > > - > ---------------------------------------------------------------- > This message is from the IEEE Product Safety Engineering Society > emc-pstc discussion list. Website: <http://www.ieee-pses.org/> http://www.ieee-pses.org/ > > To post a message to the list, send your e-mail to <mailto:[email protected]> [email protected] > > 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 <mailto:[email protected]> [email protected] > Mike Cantwell <mailto:[email protected]> [email protected] > > For policy questions, send mail to: > > Jim Bacher: <mailto:[email protected]> [email protected] > David Heald: <mailto:[email protected]> [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 > > - > ---------------------------------------------------------------- > This message is from the IEEE Product Safety Engineering Society > emc-pstc discussion list. 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For more information please visit http://www.messagelabs.com/email ______________________________________________________________________ - ---------------------------------------------------------------- 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
