Re: Exemption from Flicker Testing
I had a laser printer that flashed all the lights (at about 1 Hz) in my home office whenever it was switched on. It drove me nuts. When I contacted the vendor about this issue, I was informed they were not expecting the $400 printer to be used in a home office environment. Imagine that. Dan Kwok, P.Eng. Principal Engineer Electromagnetic Compatibility Intetron Consulting, Inc. Ph (604) 432-9874 E-mail dk...@intetron.com Internet http://www.intetron.com From: Chris Maxwell chris.maxw...@nettest.com To: richwo...@tycoint.com; emc-p...@majordomo.ieee.org Sent: Tuesday, March 11, 2003 2:03 PM Subject: RE: Exemption from Flicker Testing YesUnless it has a 10F capacitor that needs to be charged upon power up :-) I think that the examination is meant to look for such problems. -Original Message- From: richwo...@tycoint.com [SMTP:richwo...@tycoint.com] Sent: Friday, March 07, 2003 9:40 AM To: emc-p...@majordomo.ieee.org Subject: Exemption from Flicker Testing Clause 6.1 of EN 61000-3-3 + A1 says Tests shall not be made on equipment which is unlikely to produce significant voltage fluctuations or flicker. It may be necessary to determine, by examination of the circuit diagram and specifications of the equipment and by a short functional test, whether significant voltage fluctuations are likely to be produced. Am I standing on firm ground assuming that equipment consuming less than 75W can be exempted from test? Richard Woods Sensormatic Electronics Tyco International --- This message is from the IEEE EMC Society Product Safety Technical Committee emc-pstc discussion list. Visit our web site at: http://www.ewh.ieee.org/soc/emcs/pstc/ To cancel your subscription, send mail to: majord...@ieee.org with the single line: unsubscribe emc-pstc For help, send mail to the list administrators: Ron Pickard: emc-p...@hypercom.com Dave Heald: davehe...@attbi.com For policy questions, send mail to: Richard Nute: ri...@ieee.org Jim Bacher: j.bac...@ieee.org Archive is being moved, we will announce when it is back on-line. All emc-pstc postings are archived and searchable on the web at: http://www.ieeecommunities.org/emc-pstc This message is from the IEEE EMC Society Product Safety Technical Committee emc-pstc discussion list. Visit our web site at: http://www.ewh.ieee.org/soc/emcs/pstc/ To cancel your subscription, send mail to: majord...@ieee.org with the single line: unsubscribe emc-pstc For help, send mail to the list administrators: Ron Pickard: emc-p...@hypercom.com Dave Heald: davehe...@attbi.com For policy questions, send mail to: Richard Nute: ri...@ieee.org Jim Bacher: j.bac...@ieee.org Archive is being moved, we will announce when it is back on-line. All emc-pstc postings are archived and searchable on the web at: http://www.ieeecommunities.org/emc-pstc This message is from the IEEE EMC Society Product Safety Technical Committee emc-pstc discussion list. Visit our web site at: http://www.ewh.ieee.org/soc/emcs/pstc/ To cancel your subscription, send mail to: majord...@ieee.org with the single line: unsubscribe emc-pstc For help, send mail to the list administrators: Ron Pickard: emc-p...@hypercom.com Dave Heald: davehe...@attbi.com For policy questions, send mail to: Richard Nute: ri...@ieee.org Jim Bacher: j.bac...@ieee.org Archive is being moved, we will announce when it is back on-line. All emc-pstc postings are archived and searchable on the web at: http://www.ieeecommunities.org/emc-pstc
Re: Military ESD Specs
It covers a lot more than ESD, but there are specs for that with respect to helicopters in ADS-37, an aeronautical design standard for EMC-related issues for Army helicopters. on 3/5/03 11:17 AM, Locke, Darrell at dlo...@advanced-input.com wrote: Members, Does anyone know the applicable military specs (US) for personal ESD (PESD) and helicopter ESD (HESD) are? These are not covered in MIL-STD-461. Thanks Darrell Locke Advanced Input Devices --- This message is from the IEEE EMC Society Product Safety Technical Committee emc-pstc discussion list. Visit our web site at: http://www.ewh.ieee.org/soc/emcs/pstc/ To cancel your subscription, send mail to: majord...@ieee.org with the single line: unsubscribe emc-pstc For help, send mail to the list administrators: Ron Pickard: emc-p...@hypercom.com Dave Heald: davehe...@attbi.com For policy questions, send mail to: Richard Nute: ri...@ieee.org Jim Bacher: j.bac...@ieee.org Archive is being moved, we will announce when it is back on-line. All emc-pstc postings are archived and searchable on the web at: http://www.ieeecommunities.org/emc-pstc -- Ken Javor EMC Compliance Huntsville, Alabama 256/650-5261 This message is from the IEEE EMC Society Product Safety Technical Committee emc-pstc discussion list. Visit our web site at: http://www.ewh.ieee.org/soc/emcs/pstc/ To cancel your subscription, send mail to: majord...@ieee.org with the single line: unsubscribe emc-pstc For help, send mail to the list administrators: Ron Pickard: emc-p...@hypercom.com Dave Heald: davehe...@attbi.com For policy questions, send mail to: Richard Nute: ri...@ieee.org Jim Bacher: j.bac...@ieee.org Archive is being moved, we will announce when it is back on-line. All emc-pstc postings are archived and searchable on the web at: http://www.ieeecommunities.org/emc-pstc
RE: CE mark on development/evaluation boards ?
From: John Woodgate Sent: Friday, March 07, 2003 1:24 PM Peter L. Tarver peter.tar...@sanmina-sci.com wrote: I also have a current need for this information and would appreciate being copied on anything off the list. Why off-list? It seems to me that a lot of people would be interested in answers Many people reply off the list, directly to a poster rather than to the list as a whole. Their reasons are there own, but I wanted to be certain I received as many responses to Anthony's question as possible, since I coincidentally need the same information. Regards, Peter L. Tarver, PE Product Safety Manager Sanmina-SCI Homologation Services 2000 Ringwood Ave. San Jose, CA 95131-1749 V: 408-904-2081 F: 408-904-2095 M: 408-234-3529 peter.tar...@sanmina-sci.com This message is from the IEEE EMC Society Product Safety Technical Committee emc-pstc discussion list. Visit our web site at: http://www.ewh.ieee.org/soc/emcs/pstc/ To cancel your subscription, send mail to: majord...@ieee.org with the single line: unsubscribe emc-pstc For help, send mail to the list administrators: Ron Pickard: emc-p...@hypercom.com Dave Heald: davehe...@attbi.com For policy questions, send mail to: Richard Nute: ri...@ieee.org Jim Bacher: j.bac...@ieee.org Archive is being moved, we will announce when it is back on-line. All emc-pstc postings are archived and searchable on the web at: http://www.ieeecommunities.org/emc-pstc
RE: New countries that will accept the CE Mark
Jeffrey, The link below shows that some of the countries will be joining the EU next year. http://www.eurunion.org/news/press/2002/2002051.htm Regards, Josh From: Collins, Jeffrey [mailto:jcoll...@ciena.com] Sent: Thursday, March 06, 2003 12:36 PM To: 'EMC-PSTC' Subject: New countries that will accept the CE Mark Group, Does anyone have any recent updates on the following countries legislation to accept the CE mark? If/when this is complete, will the CE mark have equal weight as their national mark? * Bulgaria * Czech Republic * Hungary * Romania * Slovakia * Slovenia * Poland * Turkey Thanks, Jeffrey Collins Sr. HW Engineering Manager EMC/ NEBS/ Reliability/ Safety CIENA Core Switching Division 5965 Silver Creek Valley Rd. San Jose, CA. 95138 (408) 571-3002, Fax (408) 965-2705 jcoll...@ciena.com http://www.ciena.com This message is from the IEEE EMC Society Product Safety Technical Committee emc-pstc discussion list. Visit our web site at: http://www.ewh.ieee.org/soc/emcs/pstc/ To cancel your subscription, send mail to: majord...@ieee.org with the single line: unsubscribe emc-pstc For help, send mail to the list administrators: Ron Pickard: emc-p...@hypercom.com Dave Heald: davehe...@attbi.com For policy questions, send mail to: Richard Nute: ri...@ieee.org Jim Bacher: j.bac...@ieee.org Archive is being moved, we will announce when it is back on-line. All emc-pstc postings are archived and searchable on the web at: http://www.ieeecommunities.org/emc-pstc This message is from the IEEE EMC Society Product Safety Technical Committee emc-pstc discussion list. Visit our web site at: http://www.ewh.ieee.org/soc/emcs/pstc/ To cancel your subscription, send mail to: majord...@ieee.org with the single line: unsubscribe emc-pstc For help, send mail to the list administrators: Ron Pickard: emc-p...@hypercom.com Dave Heald: davehe...@attbi.com For policy questions, send mail to: Richard Nute: ri...@ieee.org Jim Bacher: j.bac...@ieee.org Archive is being moved, we will announce when it is back on-line. All emc-pstc postings are archived and searchable on the web at: http://www.ieeecommunities.org/emc-pstc
RE: Amendment 1 to CISP24:1997 adopted in EU?
Joe, It has been published in the EU Official Journal for already some time. Take a look to http://europa.eu.int/com /enterprise/newapproach/standardization/harmstds/reflist/radiotte.html. You can use the amendment 1 now and it will become mandatory on October 1rst, 2004. Regards, Kris --- As of February 12, 2003 Thomson unifies its email addresses on a worldwide basis.Please note my new email address: kristiaan.carpent...@thomson.net Thomson is the leader in solutions and technologies for the entertainment and media industries and serves its customers under its four strategic brands: Technicolor, Grass Valley, RCA and THOMSON. More about Thomson: http://www.thomson.net/videochain Original Message- From: j...@aol.com [ mailto:j...@aol.com] Sent: zaterdag 8 maart 2003 3:06 To: emc-p...@majordomo.ieee.org; t...@world.std.com Subject: Amendment 1 to CISP24:1997 adopted in EU? Hello All: The conducted immunity limits for voice equipment in Tables A.1, A.2, A.3, and A.4 of EN 55024:1998 are very difficult to meet. I have a copy of the IEC Amendment 1 to CISPR 24, dated July 2001, that significantly relaxes these limits. Was this amendment ever adopted by the EU to become part of EN 55024? If not, is there any likelihood that it will be adopted soon? Thanks, Joe Randolph Telecom Design Consultant Randolph Telecom, Inc. 781-721-2848 j...@randolph-telecom.com http://www.randolph-telecom.com
RE: New countries that will accept the CE Mark
Jeffrey, The best place to look for this information is the website of the European Commission on PECA's: http://europa.eu.int/comm/enterprise/regulation/pecas/pecas.htm Look for an overview of the sectors that are already covered by each individual country on http://europa.eu. nt/comm/enterprise/regulation/pecas/pecas_sectors.htm So the country will accept the CE mark for the sectors that are already implemented, otherwise national legislation is still there. For the sectors implemented, the CE mark has equal value in the context of what the CE mark is meant for. I your sector is not implemented yet: 8 candidate countries will become member in May, 2004 at which date they will have implemented the European legislation for all sectors, also the legislation for CE marking. Regards, Kris --- As of February 12, 2003 Thomson unifies its email addresses on a worldwide basis.Please note my new email address: kristiaan.carpent...@thomson.net Thomson is the leader in solutions and technologies for the entertainment and media industries and serves its customers under its four strategic brands: Technicolor, Grass Valley, RCA and THOMSON. More about Thomson: http://www.thomson.net/videochain Original Message- From: Collins, Jeffrey [ mailto:jcoll...@ciena.com] Sent: donderdag 6 maart 2003 21:36 To: 'EMC-PSTC' Subject: New countries that will accept the CE Mark Group, Does anyone have any recent updates on the following countries legislation to accept the CE mark? If/when this is complete, will the CE mark have equal weight as their national mark? * Bulgaria * Czech Republic * Hungary * Romania * Slovakia * Slovenia * Poland * Turkey Thanks, Jeffrey Collins Sr. HW Engineering Manager EMC/ NEBS/ Reliability/ Safety CIENA Core Switching Division 5965 Silver Creek Valley Rd. San Jose, CA. 95138 (408) 571-3002, Fax (408) 965-2705 jcoll...@ciena.com http://www.ciena.com --- This message is from the IEEE EMC Society Product Safety Technical Committee emc-pstc discussion list. Visit our web site at: http://www.ewh.ieee.org/soc/emcs/pstc/ To cancel your subscription, send mail to: majord...@ieee.org with the single line: unsubscribe emc-pstc For help, send mail to the list administrators: Ron Pickard: emc-p...@hypercom.com Dave Heald: davehe...@attbi.com For policy questions, send mail to: Richard Nute: ri...@ieee.org Jim Bacher: j.bac...@ieee.org Archive is being moved, we will announce when it is back on-line. All emc-pstc postings are archived and searchable on the web at: http://www.ieeecommunities.org/emc-pstc
RE: CE mark on development/evaluation boards ?
I also have a current need for this information and would appreciate being copied on anything off the list. Regards, Peter L. Tarver, PE Product Safety Manager Sanmina-SCI Homologation Services San Jose, CA peter.tar...@sanmina-sci.com -Original Message- From: owner-emc-p...@majordomo.ieee.org [mailto:owner-emc-p...@majordomo.ieee.org]On Behalf Of Anthony Moulds Sent: Friday, March 07, 2003 9:30 AM To: emc-p...@majordomo.ieee.org Subject: CE mark on development/evaluation boards ? Hi, It's unclear (to me anyway!) if development/evaluation test board products should be tested for compliance with the EU EMC directive. I often see boards supplied without the CE mark, e.g. Xilinx, TI, Altera development boards. Are these type of products exempt from the European directive ? If anyone is in a position to throw light on this I would appreciate an email. Thanks. Anthony. --- This message is from the IEEE EMC Society Product Safety Technical Committee emc-pstc discussion list. Visit our web site at: http://www.ewh.ieee.org/soc/emcs/pstc/ To cancel your subscription, send mail to: majord...@ieee.org with the single line: unsubscribe emc-pstc For help, send mail to the list administrators: Ron Pickard: emc-p...@hypercom.com Dave Heald: davehe...@attbi.com For policy questions, send mail to: Richard Nute: ri...@ieee.org Jim Bacher: j.bac...@ieee.org Archive is being moved, we will announce when it is back on-line. All emc-pstc postings are archived and searchable on the web at: http://www.ieeecommunities.org/emc-pstc This message is from the IEEE EMC Society Product Safety Technical Committee emc-pstc discussion list. Visit our web site at: http://www.ewh.ieee.org/soc/emcs/pstc/ To cancel your subscription, send mail to: majord...@ieee.org with the single line: unsubscribe emc-pstc For help, send mail to the list administrators: Ron Pickard: emc-p...@hypercom.com Dave Heald: davehe...@attbi.com For policy questions, send mail to: Richard Nute: ri...@ieee.org Jim Bacher: j.bac...@ieee.org Archive is being moved, we will announce when it is back on-line. All emc-pstc postings are archived and searchable on the web at: http://www.ieeecommunities.org/emc-pstc
Re: Exemption from Flicker Testing
I read in !emc-pstc that richwo...@tycoint.com wrote (in 846BF526A205F8 4BA2B6045BBF7E9A6A04675D5B@flbocexu05) about 'Exemption from Flicker Testing' on Fri, 7 Mar 2003: Am I standing on firm ground assuming that equipment consuming less than 75W can be exempted from test? No. If you have a highly-efficient 75 W DOL SMPS, the inrush current may well be enough to cause a big voltage change. That in itself is enough to warrant an examination of the schematic etc. -- Regards, John Woodgate, OOO - Own Opinions Only. http://www.jmwa.demon.co.uk Interested in professional sound reinforcement and distribution? Then go to http://www.isce.org.uk PLEASE do NOT copy news posts to me by E-MAIL! This message is from the IEEE EMC Society Product Safety Technical Committee emc-pstc discussion list. Visit our web site at: http://www.ewh.ieee.org/soc/emcs/pstc/ To cancel your subscription, send mail to: majord...@ieee.org with the single line: unsubscribe emc-pstc For help, send mail to the list administrators: Ron Pickard: emc-p...@hypercom.com Dave Heald: davehe...@attbi.com For policy questions, send mail to: Richard Nute: ri...@ieee.org Jim Bacher: j.bac...@ieee.org Archive is being moved, we will announce when it is back on-line. All emc-pstc postings are archived and searchable on the web at: http://www.ieeecommunities.org/emc-pstc
RE: New safety standards for goods in Russia
Hi Folks You can find a translation here: http://www.gost.ru/sls/gost.nsf/(SysLinkView)/2F18C0876CB5582EC3256CBD0038C3 D4/$file/zakon-tr-eng.rtf However, having read it, you will have to wait for the implementing regulations to be enacted before the current situation changes substantially! Regards John Allen Technical Consultant Safety and Risk Management ERA Technology Ltd Cleeve Rd Leatherhead Surrey KT22 7SA Tel:+44 (0) 1372-367025 (Direct) +44 (0) 1372-367000 (Switchboard) Fax:+44 (0) 1372-367102 (Fax) From: Nick Williams [mailto:nick.willi...@conformance.co.uk] Sent: 10 March 2003 11:57 To: emc-p...@majordomo.ieee.org Subject: Fwd: New safety standards for goods in Russia The following came in last week and may interest some other members of the list. Regards Nick. Date: Tue, 04 Mar 2003 01:01:49 +0100 From: law-...@cmck.com Subject: New safety standards for goods in Russia To: nick.willi...@conformance.co.uk X-OriginalArrivalTime: 04 Mar 2003 00:52:25.0355 (UTC) FILETIME=[528ED5B0:01C2E1E8] = Law-Now - CMS Cameron McKenna's Electronic Information Service www.law-now.com = The Russian President has recently signed into law the Federal Law On Technical Regulations which outlines new safety standards for Russian and foreign goods produced or sold in Russia. The law, which comes into effect on 1 July 2003, will replace several Federal Laws currently in force, such as the law On Certification of Products and Services, On Standardisation, and other subsidiary acts. The new law is intended to raise safety levels (specifically regarding heavy machinery, fire safety, biological or radiation poisoning, and environmental damage, among other hazards) by shifting the responsibility for maintaining safety standards from the government to the private sector. Currently, the government issues certificates, but under the new law Russian manufacturers and suppliers, and representatives of foreign producers, must obtain certificates from a specially created agency and ensure that their goods are properly labelled. Failure to meet these requirements will attract stiff penalties. Until the enactment of new safety standards, certification of goods will be carried out on the basis of the existing standards and regulations. Certificates issued before the enactment of the law will be valid until they expire. To read a full article on the new law On Technical Regulations, please click/copy and paste the following link: http://www.law-now.com/law-now/press.cfm?id=5208 For further information please contact David Griston at david.gris...@cmck.com or on 00 7 095 2585000. This message is from the IEEE EMC Society Product Safety Technical Committee emc-pstc discussion list. Visit our web site at: http://www.ewh.ieee.org/soc/emcs/pstc/ To cancel your subscription, send mail to: majord...@ieee.org with the single line: unsubscribe emc-pstc For help, send mail to the list administrators: Ron Pickard: emc-p...@hypercom.com Dave Heald: davehe...@attbi.com For policy questions, send mail to: Richard Nute: ri...@ieee.org Jim Bacher: j.bac...@ieee.org Archive is being moved, we will announce when it is back on-line. All emc-pstc postings are archived and searchable on the web at: http://www.ieeecommunities.org/emc-pstc _ This e-mail has been scanned for viruses by the WorldCom Internet Managed Scanning Service - powered by MessageLabs. For further information visit http://www.worldcom.com * Copyright ERA Technology Ltd. 2002. (www.era.co.uk). All rights reserved. The information supplied in this Commercial Communication should be treated in confidence. No liability whatsoever is accepted for any loss or damage suffered as a result of accessing this message or any attachments. _ This e-mail has been scanned for viruses by the WorldCom Internet Managed Scanning Service - powered by MessageLabs. For further information visit http://www.worldcom.com This message is from the IEEE EMC Society Product Safety Technical Committee emc-pstc discussion list. Visit our web site at: http://www.ewh.ieee.org/soc/emcs/pstc/ To cancel your subscription, send mail to: majord...@ieee.org with the single line: unsubscribe emc-pstc For help, send mail to the list administrators: Ron Pickard: emc-p...@hypercom.com Dave Heald: davehe...@attbi.com For policy questions, send mail to: Richard Nute: ri...@ieee.org Jim Bacher: j.bac...@ieee.org Archive is being moved, we will announce when it is back on-line. All emc-pstc
RE: New countries that will accept the CE Mark
Jeffrey, The best place to look for this information is the website of the European Commission on PECA's: http://europa.eu.int/comm/enterprise/regulation/pecas/pecas.htm Look for an overview of the sectors that are already covered by each individual country on http://europa.eu. nt/comm/enterprise/regulation/pecas/pecas_sectors.htm So the country will accept the CE mark for the sectors that are already implemented, otherwise national legislation is still there. For the sectors implemented, the CE mark has equal value in the context of what the CE mark is meant for. I your sector is not implemented yet: 8 candidate countries will become member in May, 2004 at which date they will have implemented the European legislation for all sectors, also the legislation for CE marking. Regards, Kris --- As of February 12, 2003 Thomson unifies its email addresses on a worldwide basis.Please note my new email address: kristiaan.carpent...@thomson.net Thomson is the leader in solutions and technologies for the entertainment and media industries and serves its customers under its four strategic brands: Technicolor, Grass Valley, RCA and THOMSON. More about Thomson: http://www.thomson.net/videochain Original Message- From: Collins, Jeffrey [ mailto:jcoll...@ciena.com] Sent: donderdag 6 maart 2003 21:36 To: 'EMC-PSTC' Subject: New countries that will accept the CE Mark Group, Does anyone have any recent updates on the following countries legislation to accept the CE mark? If/when this is complete, will the CE mark have equal weight as their national mark? * Bulgaria * Czech Republic * Hungary * Romania * Slovakia * Slovenia * Poland * Turkey Thanks, Jeffrey Collins Sr. HW Engineering Manager EMC/ NEBS/ Reliability/ Safety CIENA Core Switching Division 5965 Silver Creek Valley Rd. San Jose, CA. 95138 (408) 571-3002, Fax (408) 965-2705 jcoll...@ciena.com http://www.ciena.com --- This message is from the IEEE EMC Society Product Safety Technical Committee emc-pstc discussion list. Visit our web site at: http://www.ewh.ieee.org/soc/emcs/pstc/ To cancel your subscription, send mail to: majord...@ieee.org with the single line: unsubscribe emc-pstc For help, send mail to the list administrators: Ron Pickard: emc-p...@hypercom.com Dave Heald: davehe...@attbi.com For policy questions, send mail to: Richard Nute: ri...@ieee.org Jim Bacher: j.bac...@ieee.org Archive is being moved, we will announce when it is back on-line. All emc-pstc postings are archived and searchable on the web at: http://www.ieeecommunities.org/emc-pstc
Re: Ethernet coax connection
Hi Group, I watched this interesting thread and noticed that none of you recalled the susceptibility of the system. We had severe problems with susceptibility of computers with Ethernet coax connection. As a matter of fact did not find any computer meeting the requirements for industrial environment of the 61000-4-4 (burst). They all failed at levels of a couple of hundred volts. Using capacitor coupled BNCs helps a bit. We simply bonded the shield to ground. I have to notice, that all computers attached to the network were in the same floor of the same building. Best regards George ** * Dr. Georg M. Dancau * HAUNI MASCHINENBAU AG * * g.m.dan...@ieee.org * Manager Product Development* * TEL: +49 40 7250 2102 * K.A.Koerber Chaussee 8..32 * * FAX: +49 40 7250 3801 * 21033 Hamburg, Germany * ** * home: Tel: +49 4122 99453 * Hauptstr. 60a * * Fax: +49 4122 99454 * 25492 Heist, Germany * * Cellular: +49 175 5805280** ** From: Ken Javor ken.ja...@emccompliance.com To: Stone, Richard A (Richard) rsto...@lucent.com; 'Knighten, Jim L' jk100...@teradata-ncr.com; emc-p...@majordomo.ieee.org Sent: Wednesday, March 05, 2003 11:10 PM Subject: Re: Ethernet coax connection Thanks to all who answered in MINUTES assisting an EMI troubleshoot on something that is of great national value. This forum is a tremendous resource! on 3/5/03 4:46 PM, Stone, Richard A (Richard) at rsto...@lucent.com wrote: we've had good success with the built capacitance of 9000pf as well, depending on test being discussed and frequency, certain cap. values from the shielded ring of the UNgrounded ring to earth works well for low freq.. 30 mhz. Richard, -Original Message- From: Knighten, Jim L [mailto:jk100...@teradata-ncr.com] Sent: Wednesday, March 05, 2003 4:12 PM To: Ken Javor; emc-p...@majordomo.ieee.org Subject: RE: Ethernet coax connection Ken, It is a potential shock hazard if the coax run is long and runs from building to building (for instance) where the ground potentials may be different in the different buildings. One can develop a large potential on the shield of the cable, so that if you put yourself between the cable shield and ground you may get a strong shock. That is the reason for isolating the shield from more than one direct connection to ground. It is a real issue. The result for EMI is, as you have noted, the creation of an egregious EMI offender. I have used the chassis mounted BNC connectors with built-in capacitors successfully. Jim Jim Knighten, Ph.D. Teradata, a Division of NCR http://www.ncr.com 17095 Via Del Campo San Diego, CA 92127 USA Tel: 858-485-2537 Fax: 858-485-3788 jim.knigh...@ncr.com -Original Message- From: Ken Javor [mailto:ken.ja...@emccompliance.com] Sent: Wednesday, March 05, 2003 12:58 PM To: Knighten, Jim L; emc-p...@majordomo.ieee.org Subject: Re: Ethernet coax connection Assume complete ignorance on my part. What is the safety concern? on 3/5/03 3:50 PM, Knighten, Jim L at jk100...@teradata-ncr.com wrote: Ken, Safety considerations are the reason for the spec requirement. You are allowed to ground the shield at one point. Try using a BNC coax connector with a built-in capacitor to ground. That gives you an AC connection to ground and is often quite effective. These are off-the-shelf parts. Jim Jim Knighten, Ph.D. Teradata, a Division of NCR http://www.ncr.com 17095 Via Del Campo San Diego, CA 92127 USA Tel: 858-485-2537 Fax: 858-485-3788 jim.knigh...@ncr.com -Original Message- From: Ken Javor [mailto:ken.ja...@emccompliance.com] Sent: Wednesday, March 05, 2003 12:38 PM To: emc-p...@majordomo.ieee.org Subject: Ethernet coax connection Question for list members: Background: I am troubleshooting a complex integration of military hardware and COTS. One COTS piece of equipment has an RG-58 coaxial connection, but the coax connector is an isolated feedthrough bnc. From a radiated emissions point-of-view, that is hurting us. One of the engineers here said that is part of the spec - Ethernet shields are not supposed to be chassis grounded. Question: Can someone please explain the reason for that, and how this is usually handled to minimize radiated emissions? Thank you. Ken Javor EMC Compliance Huntsville, Alabama 256/650-5261 --- This message is from the IEEE EMC Society Product Safety Technical Committee emc-pstc discussion list. Visit our web site at: http://www.ewh.ieee.org/soc/emcs/pstc/ To cancel your
Immunity Amplifiers 1-10 GHz
Fellow listers; I am looking for sources of Immunity (-3, ETSI, 461 and Bellcore) power amplifiers in the 1-10 or 20 GHz, 15-30 W range. Please respond off-list directly to me with names of possible vendors and any comments , and or good/bad experiences if you care too! Thanks Hans Mellberg This message is from the IEEE EMC Society Product Safety Technical Committee emc-pstc discussion list. Visit our web site at: http://www.ewh.ieee.org/soc/emcs/pstc/ To cancel your subscription, send mail to: majord...@ieee.org with the single line: unsubscribe emc-pstc For help, send mail to the list administrators: Ron Pickard: emc-p...@hypercom.com Dave Heald: davehe...@attbi.com For policy questions, send mail to: Richard Nute: ri...@ieee.org Jim Bacher: j.bac...@ieee.org Archive is being moved, we will announce when it is back on-line. All emc-pstc postings are archived and searchable on the web at: http://www.ieeecommunities.org/emc-pstc
Re: CE mark on development/evaluation boards ?
I read in !emc-pstc that Peter L. Tarver peter.tar...@sanmina-sci.com wrote (in nebbkemlgllmjofmoplememaeeaa.peter.tar...@sanmina-sci.com) about 'CE mark on development/evaluation boards ?' on Fri, 7 Mar 2003: I also have a current need for this information and would appreciate being copied on anything off the list. Why off-list? It seems to me that a lot of people would be interested in answers, especially if one came from one of the suppliers mentioned. [sigsnip] -Original Message- From: owner-emc-p...@majordomo.ieee.org [mailto:owner-emc-p...@majordomo.ieee.org]On Behalf Of Anthony Moulds Sent: Friday, March 07, 2003 9:30 AM To: emc-p...@majordomo.ieee.org Subject: CE mark on development/evaluation boards ? I didn't get this message, so apologies to PT for hi-jacking his response. Hi, It's unclear (to me anyway!) if development/evaluation test board products should be tested for compliance with the EU EMC directive. I often see boards supplied without the CE mark, e.g. Xilinx, TI, Altera development boards. Are these type of products exempt from the European directive ? Well, are they shipped as functioning units? If you just get a pile of parts, and the supplier has no *detailed* idea how you are going to build them up, nor what software and peripherals you will add, the supplier CAN'T carry out any meaningful EMC tests, let alone safety, so the only **sensible** solution is to regard them as outside the scopes of the Directives. However, having 'sensible' and 'Directives' in the same sentence is something of an oxymoron, so if anyone who has a definitive answer would post, it would be very helpful. -- Regards, John Woodgate, OOO - Own Opinions Only. http://www.jmwa.demon.co.uk Interested in professional sound reinforcement and distribution? Then go to http://www.isce.org.uk PLEASE do NOT copy news posts to me by E-MAIL! This message is from the IEEE EMC Society Product Safety Technical Committee emc-pstc discussion list. Visit our web site at: http://www.ewh.ieee.org/soc/emcs/pstc/ To cancel your subscription, send mail to: majord...@ieee.org with the single line: unsubscribe emc-pstc For help, send mail to the list administrators: Ron Pickard: emc-p...@hypercom.com Dave Heald: davehe...@attbi.com For policy questions, send mail to: Richard Nute: ri...@ieee.org Jim Bacher: j.bac...@ieee.org Archive is being moved, we will announce when it is back on-line. All emc-pstc postings are archived and searchable on the web at: http://www.ieeecommunities.org/emc-pstc
Re: Need 230VAC-115VAC 500VA Step-down Isolation Transformer with UL, cUL, and CE
Hello Bill, Do you need 1, 10, 1000 or more of these transformers? That'l help me direct you to the right source. And, will this be mounted internally to your equipment, or standing on the floor next to it? Regards, Art Michael A.E. Michael, Dir. of Engineering Product Safety Int'l 166 Congdon St. East Middletown CT 06457-2107 U.S.A. Phone : (860) 344-1651 Fax: (860) 346-9066 Email : p...@safetylink.com Website: http://www.safetylink.com On Wed, 5 Mar 2003, Bill Johnson wrote: Hi! I apologize if this is an inappropriate question for this forum. I am trying to select the above component for a product we are designing. I have found transformers with no approvals, one with UL and cUL, but not CE. Any advice on where to look or how to select such a component would be a great help! Thanks! --- This message is from the IEEE EMC Society Product Safety Technical Committee emc-pstc discussion list. Visit our web site at: http://www.ewh.ieee.org/soc/emcs/pstc/ To cancel your subscription, send mail to: majord...@ieee.org with the single line: unsubscribe emc-pstc For help, send mail to the list administrators: Ron Pickard: emc-p...@hypercom.com Dave Heald: davehe...@attbi.com For policy questions, send mail to: Richard Nute: ri...@ieee.org Jim Bacher: j.bac...@ieee.org Archive is being moved, we will announce when it is back on-line. All emc-pstc postings are archived and searchable on the web at: http://www.ieeecommunities.org/emc-pstc This message is from the IEEE EMC Society Product Safety Technical Committee emc-pstc discussion list. Visit our web site at: http://www.ewh.ieee.org/soc/emcs/pstc/ To cancel your subscription, send mail to: majord...@ieee.org with the single line: unsubscribe emc-pstc For help, send mail to the list administrators: Ron Pickard: emc-p...@hypercom.com Dave Heald: davehe...@attbi.com For policy questions, send mail to: Richard Nute: ri...@ieee.org Jim Bacher: j.bac...@ieee.org Archive is being moved, we will announce when it is back on-line. All emc-pstc postings are archived and searchable on the web at: http://www.ieeecommunities.org/emc-pstc
RE: Need 230VAC-115VAC 500VA Step-down Isolation Transformer with UL, cUL, and CE
Try Interpower Components Ltd (www.interpower.com) transformer product line - 82520010 (100VA); 82520020 (500VA); 82520030 (1000VA); 82520040 (2000VA); for which they claim UL and CE approval Ged Dean From: Bill Johnson [mailto:bi...@kryotech.com] Sent: 05 March 2003 15:44 To: 'emc-p...@majordomo.ieee.org' Subject: Need 230VAC-115VAC 500VA Step-down Isolation Transformer with UL, cUL, and CE Hi! I apologize if this is an inappropriate question for this forum. I am trying to select the above component for a product we are designing. I have found transformers with no approvals, one with UL and cUL, but not CE. Any advice on where to look or how to select such a component would be a great help! Thanks! This message is from the IEEE EMC Society Product Safety Technical Committee emc-pstc discussion list. Visit our web site at: http://www.ewh.ieee.org/soc/emcs/pstc/ To cancel your subscription, send mail to: majord...@ieee.org with the single line: unsubscribe emc-pstc For help, send mail to the list administrators: Ron Pickard: emc-p...@hypercom.com Dave Heald: davehe...@attbi.com For policy questions, send mail to: Richard Nute: ri...@ieee.org Jim Bacher: j.bac...@ieee.org Archive is being moved, we will announce when it is back on-line. All emc-pstc postings are archived and searchable on the web at: http://www.ieeecommunities.org/emc-pstc ** This email and any files transmitted with it are confidential and intended solely for the use of the individual or entity to whom they are addressed. If you have received this email in error please notify the system manager. This footnote also confirms that this email message has been swept by MIMEsweeper for the presence of computer viruses. NCHT ** This message is from the IEEE EMC Society Product Safety Technical Committee emc-pstc discussion list. Visit our web site at: http://www.ewh.ieee.org/soc/emcs/pstc/ To cancel your subscription, send mail to: majord...@ieee.org with the single line: unsubscribe emc-pstc For help, send mail to the list administrators: Ron Pickard: emc-p...@hypercom.com Dave Heald: davehe...@attbi.com For policy questions, send mail to: Richard Nute: ri...@ieee.org Jim Bacher: j.bac...@ieee.org Archive is being moved, we will announce when it is back on-line. All emc-pstc postings are archived and searchable on the web at: http://www.ieeecommunities.org/emc-pstc
Amendment 1 to CISP24:1997 adopted in EU?
Hello All: The conducted immunity limits for voice equipment in Tables A.1, A.2, A.3, and A.4 of EN 55024:1998 are very difficult to meet. I have a copy of the IEC Amendment 1 to CISPR 24, dated July 2001, that significantly relaxes these limits. Was this amendment ever adopted by the EU to become part of EN 55024? If not, is there any likelihood that it will be adopted soon? Thanks, Joe Randolph Telecom Design Consultant Randolph Telecom, Inc. 781-721-2848 j...@randolph-telecom.com http://www.randolph-telecom.com This message is from the IEEE EMC Society Product Safety Technical Committee emc-pstc discussion list. Visit our web site at: http://www.ewh.ieee.org/soc/emcs/pstc/ To cancel your subscription, send mail to: majord...@ieee.org with the single line: unsubscribe emc-pstc For help, send mail to the list administrators: Ron Pickard: emc-p...@hypercom.com Dave Heald: davehe...@attbi.com For policy questions, send mail to: Richard Nute: ri...@ieee.org Jim Bacher: j.bac...@ieee.org Archive is being moved, we will announce when it is back on-line. All emc-pstc postings are archived and searchable on the web at: http://www.ieeecommunities.org/emc-pstc
Exemption from Flicker Testing
Clause 6.1 of EN 61000-3-3 + A1 says Tests shall not be made on equipment which is unlikely to produce significant voltage fluctuations or flicker. It may be necessary to determine, by examination of the circuit diagram and specifications of the equipment and by a short functional test, whether significant voltage fluctuations are likely to be produced. Am I standing on firm ground assuming that equipment consuming less than 75W can be exempted from test? Richard Woods Sensormatic Electronics Tyco International This message is from the IEEE EMC Society Product Safety Technical Committee emc-pstc discussion list. Visit our web site at: http://www.ewh.ieee.org/soc/emcs/pstc/ To cancel your subscription, send mail to: majord...@ieee.org with the single line: unsubscribe emc-pstc For help, send mail to the list administrators: Ron Pickard: emc-p...@hypercom.com Dave Heald: davehe...@attbi.com For policy questions, send mail to: Richard Nute: ri...@ieee.org Jim Bacher: j.bac...@ieee.org Archive is being moved, we will announce when it is back on-line. All emc-pstc postings are archived and searchable on the web at: http://www.ieeecommunities.org/emc-pstc
Approval of WLAN 802.11 in UAE
Hi all, We have been informed that United Arab Emirats (UAE) is holding all applications for approvals of WLAN 802.11 products until the new regulations are ready, but we do not have any further information. Could anybody confirm this information with more details ? Best regards Pierre-Marie Andre Senior Approval Engineer
Japan Radio
Is anyone aware of a radio test lab located in the USA that is recognized by TELEC (Japan). Richard Woods Sensormatic Electronics Tyco International This message is from the IEEE EMC Society Product Safety Technical Committee emc-pstc discussion list. Visit our web site at: http://www.ewh.ieee.org/soc/emcs/pstc/ To cancel your subscription, send mail to: majord...@ieee.org with the single line: unsubscribe emc-pstc For help, send mail to the list administrators: Ron Pickard: emc-p...@hypercom.com Dave Heald: davehe...@attbi.com For policy questions, send mail to: Richard Nute: ri...@ieee.org Jim Bacher: j.bac...@ieee.org Archive is being moved, we will announce when it is back on-line. All emc-pstc postings are archived and searchable on the web at: http://www.ieeecommunities.org/emc-pstc
RE: CE mark on development/evaluation boards ?
Hello Anthony, I have experience of such a product (7 years ago). Compliance to the EMC Directive was achieved through the Technical Construction File route with guidance from a Competent Body. Emission testing was performed with scope probes and logic analyser looms attached as well as any interfacing cables, but no immunity testing as far as I can remember. The general approach was to assess the measured emissions, and there were some howlers too, taking account of the where and how the product was used. Nothing was done to suppress the high emissions( 60dB at 10 metres). The risk was considered acceptable based on the discrete frequency, likelihood of interference and that the emission would not be on continually (!!). It was also necessary to inform the customer that the product: should only be operated in an industrial test and development area; that it could be susceptible to ESD, mobile phones etc; if it was to cause interference then, use ferrites, move/reorientate it or the victim; etc etc. Hope this helps Vic Gibling Compliance Engineer Internet: www.e2vtechnologies.com This message is from the IEEE EMC Society Product Safety Technical Committee emc-pstc discussion list. Visit our web site at: http://www.ewh.ieee.org/soc/emcs/pstc/ To cancel your subscription, send mail to: majord...@ieee.org with the single line: unsubscribe emc-pstc For help, send mail to the list administrators: Ron Pickard: emc-p...@hypercom.com Dave Heald: davehe...@attbi.com For policy questions, send mail to: Richard Nute: ri...@ieee.org Jim Bacher: j.bac...@ieee.org Archive is being moved, we will announce when it is back on-line. All emc-pstc postings are archived and searchable on the web at: http://www.ieeecommunities.org/emc-pstc
Apporval of WLAN 802.11 in India
Hi all, We have been informed that India will now request in country tests for WLAN 802.11 products.But the decision is not taken yet, As of today the requirements is unclear…. Before we have been able to get approval of such products without in country tests by just submitting technical file with Appropriate tests reports. Anybody could confirm this information ? Pierre-Marie Andre Senior Approval Engineer Tel : +33 (0) 4 93 00 14 13 Fax : +33 (0) 4 93 00 14 01
