Tim - true enough, and as Engineers we can't disagree from a technical perspective. However, manufacturers are going to test only to what they HAVE to test to, i.e. there is a presumption of conformity with the EMC Directive if the manufacturer applies those standards published in the OJ that apply to his product. Apparently for EN 55022 that is still the 1 GHz max frequency for measurement. For time-to-market and cost reasons, they stop there.
Jim Hulbert, Group Leader TSO Competitive & Compliance Engineering Pitney Bowes, 35 Waterview Drive, Shelton, CT 06484 Tel: 203-924-3621 (Internal 442-3621) Fax: 203-924-3352 (Internal 442-3352) From: emc-p...@ieee.org [mailto:emc-p...@ieee.org] On Behalf Of Haynes, Tim (SELEX GALILEO, UK) Sent: Friday, October 31, 2008 8:30 AM To: rehel...@mmm.com; Pettit, Ghery Cc: emc-p...@ieee.org Subject: RE: Radiated Emission Measurements above 1GHz Ghery, Rob, all Remember that when you apply a standard you are doing so on the basis that the standard covers ALL the product EMC characteristics. IF you design a PC with a 3GHz clock and only apply a standard with a 1GHz limit and then there is a problem with real interference at 3GHz, the authorities may not believe that due diligence had been applied. So I would start asking - what does the product do - and then find standards that may be useful in making your EMC assessment. Regards Tim ************************ Tim Haynes A1N10 Electromagnetic Engineering Specialist SELEX Sensors and Airborne Systems 300 Capability Green Luton LU1 3PG Tel : +44 (0)1582 886239 Fax : +44 (0)1582 795863 Mob : +44 (0)7703 559 310 * E-mail : tim.hay...@selexgalileo.com Please consider the environment before printing this email. There are 10 types of people in the world-those who understand binary and those who don't. J. Paxman From: emc-p...@ieee.org [mailto:emc-p...@ieee.org] On Behalf Of rehel...@mmm.com Sent: Friday, October 31, 2008 6:57 AM To: Pettit, Ghery Cc: emc-p...@ieee.org Subject: RE: Radiated Emission Measurements above 1GHz *** WARNING *** This mail has originated outside your organization, either from an external partner or the Global Internet. Keep this in mind if you answer this message. So if I understand this, there is no testing required for Europe above a gigahertz for EN 55022 at this time? Bob Heller 3M EMC Laboratory, 76-1-01 St. Paul, MN 55107-1208 Tel: 651- 778-6336 Fax: 651-778-6252 ========================= "Pettit, Ghery" <ghery.pettit@int el.com> To "rehel...@mmm.com" 10/30/2008 04:47 <rehel...@mmm.com> PM cc "emc-p...@ieee.org" <emc-p...@ieee.org> Subject RE: Radiated Emission Measurements above 1GHz That is correct. It was quickly withdrawn and reissued without the limits above 1 GHz. I'm still waiting for my updated copy from Global, too. :-) From: rehel...@mmm.com [mailto:rehel...@mmm.com] Sent: Thursday, October 30, 2008 1:54 AM To: Pettit, Ghery Cc: emc-p...@ieee.org Subject: RE: Radiated Emission Measurements above 1GHz Ghery, are you saying that the BS version has the error and was withdrawn? If so we were not notified of this action by British Standards. We get their standards through their subscription service. Bob Heller 3M EMC Laboratory, 76-1-01 St. Paul, MN 55107-1208 Tel: 651- 778-6336 Fax: 651-778-6252 ======================================================= Robert E. Heller/US-Corpora te/3M/US To "Pettit, Ghery" 10/30/2008 03:45 <ghery.pet...@intel.com> AM cc "emc-p...@ieee.org" <emc-p...@ieee.org> Subject RE: Radiated Emission Measurements above 1GHz(Document link: Robert E. Heller) So what is the bottom line? Are there or are there not limits for Europe (EN 55022) above a gig? I have copies of both BS EN 55022:2006 and BS EN 55022:2006 +A1:2007 Incorporating corrigendum no. 1. Both standards have a section 6.2 and both standards have limits from 1 to 6 GHz. BS EN 55022:2006 is listed in the OJ so I assume that it is valid. Bob Heller 3M EMC Laboratory, 76-1-01 St. Paul, MN 55107-1208 Tel: 651- 778-6336 Fax: 651-778-6252 ==================================================================== "Pettit, Ghery" <ghery.pettit@int el.com> To Sent by: Jim Hulbert <jim.hulb...@pb.com> emc-p...@ieee.org "Flavin, John" <john.fla...@teradata.com> "emc-p...@ieee.org" 10/29/2008 08:45 <emc-p...@ieee.org> PM cc Subject RE: Radiated Emission Measurements above 1GHz You must have an early copy put out by BSI. They made a mistake and included Amendment 1 to CISPR 22, Edition 5.0 and withdrew it promptly when I pointed out their error. Limits above 1 GHz should not be included in EN 55022:2006. Ghery S. Pettit, NCE Convener, CISPR SC I WG3 From: emc-p...@ieee.org [mailto:emc-p...@ieee.org] On Behalf Of Jim Hulbert Sent: Wednesday, October 29, 2008 10:09 AM To: Flavin, John; emc-p...@ieee.org Subject: RE: Radiated Emission Measurements above 1GHz EN 55022:2006 does indeed include the limits for radiated emissions in the range 1 GHz to 6 GHz. Look at section 6.2. This standard is published in the OJ and becomes compulsory under the EMC Directive as of 1 Oct 2009. Jim Hulbert, Group Leader TSO Competitive & Compliance Engineering Pitney Bowes, 35 Waterview Drive, Shelton, CT 06484 Tel: 203-924-3621 (Internal 442-3621) Fax: 203-924-3352 (Internal 442-3352) From: emc-p...@ieee.org [mailto:emc-p...@ieee.org] On Behalf Of Flavin, John Sent: Tuesday, October 28, 2008 5:20 PM To: emc-p...@ieee.org Subject: Radiated Emission Measurements above 1GHz We have copies of AS/NZS CISPR 22:2006 and CNS 13438:2006, both of which show radiated emission limits in the range 1-6GHz. Both reference CISPR 16-1-4 for the description of the test site. (Our copy of EN55022:2006 does not show any such limits.) A few questions: Has the CISPR test site for > 1GHz been decided? Has the validation method for the site been decided? If the test site or site validation method is still not settled, how does one test to the limits shown in these two standards? John D. Flavin Teradata TCP Engineering 17095 Via del Campo San Diego, CA 92127 john.fla...@teradata.com V: (858) 485-3874 F: (213) 337-5432 - This message is from the IEEE Product Safety Engineering Society emc-pstc discussion list. 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