Joint EMC Society and NPSS Meeting on Wednesday, October 22
All, There will be a joint Northeast Product Safety Society and EMC Society meeting on Wednesday, October 22, at EMC Corporation's Customer Briefing Center at 42 South Street in Hopkinton, MA. A social hour with light refreshments will begin at 6:00 PM and the technical meeting will start at 7:00 PM. We have two technical presentations this month with one predominately EMC related and the other product safety related. The first technical presentation will start at 7 PM with an expected 45 minute duration followed by a brief Q A time. Our second technical presentation will start around 8 PM or immediately after any questions for our first speaker. If you will be in the area, please feel free to join us as NPSS or EMCS membership or advanced notice is not required. Our first speaker, Dr. Cheung-Wei Lam, is a Senior Engineer at Apple Computer. Dr. Lam will present trade-offs and guidelines for signal integrity design versus radiated emission control. For engineers responsible for both disciplines, an in-depth understanding of the similarities and differences between the two is even more important. In this presentation, key signal integrity and EMC concepts will be reviewed. Design considerations in the two disciplines will be compared and contrasted at the chip and PCB levels. Dr. Lam is engaged in IC, PC board and system level EMC RD at Apple Computer and has implemented an EMC design and analysis process at Apple to facilitate on-time compliance at lower cost. Prior to joining Apple, he was a co-founder and Principal Engineer of Transcendent Design Technology and worked in Viewlogic's Advanced Development Group (formerly Quad Design Technology). During his years in the EDA industry, he has played key roles in the design and development of EMC, signal integrity and ground bounce analysis software tools. Dr. Lam received his B.S. degree in electronics from the Chinese University of Hong Kong, and his S.M. and PhD degrees in electrical engineering and computer science from MIT. He has served on the IEEE EMC/S TC-9 Computational EMC committee and the SAE EMC Modeling Task Force committee. He has given numerous papers, seminars, workshops, tutorials, and training courses on various EMC and signal integrity topics in the US, Europe and Japan. He was a co-recipient of the best paper award at the 1996 IEEE International Symposium on EMC. In 2002, he was appointed to serve as an IEEE EMC Society Distinguished Lecturer and is listed in Who's Who in Science and Engineering, Who's Who in America, and Who's Who in the World. Our second speaker, Mr. Timo Venalainen, is the Technical Manager of Electronic Products at CSA-International. Mr. Venalainen will present an overview of new requirements in IEC 60065-7th edition, and a progress report on the TC 108 work under way on the Hazard-Based Standard. Since the New Hazard-based Standard will replace both 60950 and 60065, this topic will be of particular interest to anyone involved with product safety certifications. Mr. Venalainen has been involved with certification of audio video products at CSA for 31 years. He has been a Senior Engineer for over 18 years. Mr. Venalainen is a member of IEC TC 108 committee and working on the maintenance of IEC 60065. He is also assisting in the writing of the new Hazard-Based Standard to cover IT and AV Equipment. The 2002 NPSS meeting schedule is available on the NPSS website at http://www.nepss.org/meetings/NPSS2003Calendar.htm. Further information about the Northeast Product Safety Society and how to become a member is available at http://www.nepss.org. You can also contact one of the NPSS officers via links at http://www.nepss.org/secretary/officers03rev3.html. Directions: From Route 495 North or South take exit 21B to West Main Street. Counting the first traffic light as the traffic light at the off ramp from Route 495 South. At the second traffic light, turn left on to South Street (Note: This is on South direction side of Route 495). EMC Corporation is the second driveway on the right. Matt Campanella NPSS Secretary Compliance Engineer Motorola, Inc. Broadband Communications Sector 111 Locke Drive Marlborough, MA 01752 (508) 786-7629 Direct (508) 786-7500 Main (508) 480-6332 Fax matthew.campane...@motorola.com email 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: emc_p...@symbol.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
RE: Grounding
Grounding and Shielding Techniques, 4th Edition Ralph Morrison ISBN: 0-471-24518-6 luck, Brian -Original Message- From: am...@westin-emission.no [ mailto:am...@westin-emission.no] Sent: Thursday, October 09, 2003 2:58 PM To: emc-p...@majordomo.ieee.org Subject: Grounding Hi Folks, Any good recommendation for books or articles covering Grounding ? More precise, grounding techniques of black boxes in vehicles. I have just been through MIL-HDBK-1857 GROUNDING, BONDING AND SHIELDING DESIGN PRACTICES , but I hope you have some suggestions to other readable stuff. Best regards Amund Westin Oslo / Norway
Grounding
Hi Folks, Any good recommendation for books or articles covering Grounding ? More precise, grounding techniques of black boxes in vehicles. I have just been through MIL-HDBK-1857 GROUNDING, BONDING AND SHIELDING DESIGN PRACTICES , but I hope you have some suggestions to other readable stuff. Best regards Amund Westin Oslo / Norway 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: emc_p...@symbol.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: Luggage Loader
I read in !emc-pstc that Sam Wismer swis...@acstestlab.com wrote (in 006c01c38e85$e6523e50$0901000a@SAMW) about 'Luggage Loader' on Thu, 9 Oct 2003: FYI. The article in Conformity states that outdoor testing is permissible however testing is ...limited to specific ISM frequencies (frequencies where RF transmission at the required level are legal). What I don't know is if this practice is only permissible for in-situ testing or if it can also be used for large objects at a test facility. I very much doubt that it can be used at all in Europe. Testing at ISM frequencies only is not a sufficiently stringent immunity test. I am getting the impression that if you do use this method that a competent body should be involved especially since the entire band is not being covered. That is definitely the only possible way (if, in fact, it exists at all) of being in a position to sign the DOC with any confidence. Someone of some higher authority will have to sign off on that I'm sure. At least I would want them to. Indeed. Maybe you could get an archbishop [insert alternative senior cleric of your choice] to refer it up. (;-) -- 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: emc_p...@symbol.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: Luggage Loader
In a message dated 10/9/2003 1:20:42 PM Central Daylight Time, swis...@acstestlab.com writes: I am getting the impression that if you do use this method that a competent body should be involved especially since the entire band is not being covered. Someone of some higher authority will have to sign off on that I'm sure. At least I would want them to. Hi Sam, you have no need for a CB, they cannot change rules. Remember, you don't strictly have to test! If your subsystem is tested, and the installation guidelines are followed, all is well. You can do this yourself. For piece of mind, you may want to do some checking, but this is where ISM, Cell phones, walkie talkies can be sufficient. Cheers, Derek N. Walton Owner, L F Research EMI Design and Test Facility Poplar Grove, IL 61065
Re: IEEE Product Safety Engineering Society
Dan, Will PSES cover only ITE and ISM or will other types of products also be included, such as Access Control, Burglary, and Fire Control? Regards, Frank de Vall Sr. Engineering Manager - Compliance Assa Abloy ITG Roman, Dan dan.ro...@intel.com To: emc-p...@majordomo.ieee.org Sent by: cc: owner-emc-pstc@majordoSubject: IEEE Product Safety Engineering Society mo.ieee.org 10/09/2003 09:08 AM Please respond to Roman, Dan All renewing IEEE members and those considering membership in the IEEE who have an interest in Product Safety have a new society to consider, the Product Safety Engineering Society (PSES). Visit the PSES web site at www.ieee-pses.org. This new Society includes the theory, design, development and implementation of product safety engineering related to the process required for ensuring that electromechanical products are safe for use within a wide-range of environments. Dissemination of technical information to enhance personal product safety engineering skills is a primary focus of the Society. The IEEE Product Safety Engineering Society plans to work closely with various IEEE Societies and Councils that also include product safety engineering as a technical specialty. The new society already has local groups in several cities that will be formed into chapters, and others will be started as demand dictates. Membership benefits will include a virtual community for society members. The society ID for your renewal or application forms is 043-0431 and the yearly fee is US$35. Renew online at www.ieee.org/renewal. Join the IEEE at http://www.ieee.org/services/join/. Customize your membership at www.ieee.org/addnewservices. Thank you! PSES Steering Committee 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: emc_p...@symbol.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: emc_p...@symbol.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: Luggage Loader
HI John, Thanks for the information. FYI. The article in Conformity states that outdoor testing is permissible however testing is ...limited to specific ISM frequencies (frequencies where RF transmission at the required level are legal). What I don't know is if this practice is only permissible for in-situ testing or if it can also be used for large objects at a test facility. I am getting the impression that if you do use this method that a competent body should be involved especially since the entire band is not being covered. Someone of some higher authority will have to sign off on that I'm sure. At least I would want them to. Kind Regards, Sam Wismer Engineering Manager ACS, Inc. *Tel: (770) 831-8048 *Fax: (770) 831-8598 *Web: www.acstestlab.com *swis...@acstestlab.com From: owner-emc-p...@majordomo.ieee.org [mailto:owner-emc-p...@majordomo.ieee.org] On Behalf Of John Woodgate Sent: Thursday, October 09, 2003 9:42 AM To: emc-p...@majordomo.ieee.org Subject: Re: Luggage Loader I read in !emc-pstc that Sam Wismer swis...@acstestlab.com wrote (in 001001c38e60$9e3df110$0901000a@SAMW) about 'Luggage Loader' on Thu, 9 Oct 2003: 1) What Directive? Check whether the Automotive Directive applies - it probably doesn't. If it doesn't, then the EMC Directive applies. The Low Voltage Directive may apply, depending on the battery voltage. The Machinery Directive might apply: it may depend on any mechanical handling features on the vehicle. 2) What is the conformity process(e.g. new approach, TCF)? Since EN 12895 exists, New Approach seems relevant: if not, the requirements would be in the Directive, not an EN. 3) Client requests testing to EN 12895 which seems appropriate, but is there anything else? If the EN covers emissions and immunity, another matter is electrical safety. 4) This thing is too large for our chamber for radiated immunity testing. In this month's Conformity there is an Article written by Bruce Fagley about testing large industrial systems. Granted the scope of the article was in-situ testing not this thing is too big for my chamber. However, in the article the author discusses how large systems are tested are tested outdoors for IEC 1000-4-3. My question is, is this method allowed only for in-situ testing, or can it be used when the EUT is so large that it cannot fit in the chamber? You probably can't do that, because your radiation source would breach spectrum management regulations. You may well need to go to a test house which has a big chamber. -- 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: emc_p...@symbol.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: emc_p...@symbol.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: Luggage Loader
In a message dated 10/9/2003 9:48:19 AM Central Daylight Time, swis...@acstestlab.com writes: My question is, is this method allowed only for in-situ testing, or can it be used when the EUT is so large that it cannot fit in the chamber? Hi Sam, I faced the same problem testing injection Moulding Machines. To get around this I made a fixtureout of 4 steel panels. On the outside of the panels I mounted all the controls, sensors and loads used in the machine. The whole fixture came down to about 5 feet square. For wires longer than would reasonably fit on the fixture, I brought off the panels and coiled on the floor in front of the fixture. We were able then to test the control systems, very close to that representing a machine. RI was performed on all 4 sides. Indeed, on the couple of machines we did ETF and CI on, the correlation was excellent. Cheers, Derek N. Walton Owner, L F Research EMI Design and Test Facility Poplar Grove, IL 61065
RE: Missing Emissions data from D of C?
Kris A brilliant example of how to try quite hard to prepare a suitable DoC, and then fail badly because you don't know what is actually required - Machinery Directive DoC's can be interesting as well! Regards John Allen ERA Technology Ltd From: Carpentier Kristiaan [mailto:kristiaan.carpent...@thomson.net] Sent: 09 October 2003 15:44 To: 'John Allen'; 'Bill Stumpf'; 'lfresea...@aol.com'; emc-p...@ieee.org Subject: RE: Missing Emissions data from D of C? John, To illustrate your worry on the 50% non-compliant Doc's, I show a quite recent example of a EU DoC for a product that should comply with the RTTE Directive. * DECLARATION OF CONFORMITY Application of directive 89/336/EEC standards to which conformity is declared: - IEC60950, 3rd ed - UL60950, 3rd ed - CSA C22.2 No.60950 3rd ed, mark - EN55022:1994 - EN61000-3-2 -3-3 - EN55024:1998 (+listing of all basic standards) - FCC Part 15 A - ICES-003 Model/ Partno to which conformity is declared: - Model: - Part no: listing all sub-assy's Conformity is declared: Person 1, title, date, signature Person 2, title, date, signature Person 3, title, date, signature And I did not accidently forget the name of the mftr, it is simply not on the DoC. Regards, Kris Carpentier * Copyright ERA Technology Ltd. 2003. (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 MCI's Internet Managed Scanning Services - powered by MessageLabs. For further information visit http://www.mci.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: emc_p...@symbol.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
IEEE Product Safety Engineering Society
All renewing IEEE members and those considering membership in the IEEE who have an interest in Product Safety have a new society to consider, the Product Safety Engineering Society (PSES). Visit the PSES web site at www.ieee-pses.org. This new Society includes the theory, design, development and implementation of product safety engineering related to the process required for ensuring that electromechanical products are safe for use within a wide-range of environments. Dissemination of technical information to enhance personal product safety engineering skills is a primary focus of the Society. The IEEE Product Safety Engineering Society plans to work closely with various IEEE Societies and Councils that also include product safety engineering as a technical specialty. The new society already has local groups in several cities that will be formed into chapters, and others will be started as demand dictates. Membership benefits will include a virtual community for society members. The society ID for your renewal or application forms is 043-0431 and the yearly fee is US$35. Renew online at www.ieee.org/renewal. Join the IEEE at http://www.ieee.org/services/join/. Customize your membership at www.ieee.org/addnewservices. Thank you! PSES Steering Committee 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: emc_p...@symbol.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: Missing Emissions data from D of C?
John, To illustrate your worry on the 50% non-compliant Doc's, I show a quite recent example of a EU DoC for a product that should comply with the RTTE Directive. * DECLARATION OF CONFORMITY Application of directive 89/336/EEC standards to which conformity is declared: - IEC60950, 3rd ed - UL60950, 3rd ed - CSA C22.2 No.60950 3rd ed, mark - EN55022:1994 - EN61000-3-2 -3-3 - EN55024:1998 (+listing of all basic standards) - FCC Part 15 A - ICES-003 Model/ Partno to which conformity is declared: - Model: - Part no: listing all sub-assy's Conformity is declared: Person 1, title, date, signature Person 2, title, date, signature Person 3, title, date, signature And I did not accidently forget the name of the mftr, it is simply not on the DoC. Regards, Kris Carpentier From: John Allen [mailto:john.al...@era.co.uk] Sent: woensdag 8 oktober 2003 16:56 To: 'Bill Stumpf'; 'lfresea...@aol.com'; emc-p...@ieee.org Subject: RE: Missing Emissions data from D of C? Hi Wrt to Bill's comment on the weakness of the DoC, I would personally say that the DoC in question is non-compliant with the EMCD since it does not declare compliance with a relevant full set of harmonised standards for bothimmunity and emissions or reference a relevant Competent Body-approved TCF, and therefore it does not demonstrate compliance with the requirements of Articles 3 4 (and related requirements) of the Directive. Therefore, the weakness is probably not with the concept of the DoC as stated in the Directive, but with the manner in which compliance with the Directive in general and the DoC requirements in particular is, or is not, enforced, (i.e. very rarely in many EU countries!). Nevertheless it would be interesting to be given the actual wording of that DoC so that we could comment in detail, since - in my experience - around 50% of DoC's are incorrect in some form, especially when prepared by someone who does not know both the relevant Directive(s) and the related interpretive documents. (In fact I wonder if it even referenced the EMCD, as I have seen some that called up only relevant standards and not the relevant overarching Directives). Regards John Allen, Technical Consultant EMC and Safety Engineering ERA Technology Ltd. Cleeve Road Leatherhead Surrey KT22 7SA UK Tel: +44-1372-367025 (Direct) +44-1372-367000 (Switchboard) Fax: +44-1372-367102 From: Bill Stumpf [mailto:bstu...@dlsemc.com] Sent: 03 October 2003 17:04 To: 'lfresea...@aol.com'; emc-p...@ieee.org Subject: RE: Missing Emissions data from D of C? Derek, This points out one of the weaknesses of the self-declaration (DOC). The responsible party can self declare for whatever standards they feel suite their needs. For instance, just because a product is CE marked, it doesn't mean that it has been tested or passed to all the relevant standards. It may just be safety. The only way to tell for sure is to look at the actual DOC, which lists the standards the product has been tested to. In the case you brought up, The product should have been tested for emissions to EN 55014 at the very least. We would also recommend EN 55022, since the potential for interference goes well beyond the 300MHz called out in EN 55014. William M Stumpf DLS Electronics 166 South Carter St. Genoa City WI 53128 ph: 262-279-0210 fx: 262-279-3630 email: bstu...@dlsemc.com Original Message- From: lfresea...@aol.com [mailto:lfresea...@aol.com] Sent: Thursday, October 02, 2003 1:02 PM To: emc-p...@ieee.org Subject: Missing Emissions data from D of C? Hi all, while reviewing a clients competitors D of C, I was surprised to see that only Immunity and Low voltage were address, there were no emissions requirements called out. The product is a professional arcade game. Is this product exempt? Any thoughts why this could be allowed? Cheers, Derek N. Walton Owner, L F Research EMI Design and Test Facility Poplar Grove, IL 61065 _ This e-mail has been scanned for viruses by MCI's Internet Managed Scanning Services - powered by MessageLabs. For further information visit http://www.mci.com * Copyright ERA Technology Ltd. 2003. (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 MCI's Internet Managed Scanning Services - powered by MessageLabs. For further information visit http://www.mci.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
Re: Luggage Loader
I read in !emc-pstc that Sam Wismer swis...@acstestlab.com wrote (in 001001c38e60$9e3df110$0901000a@SAMW) about 'Luggage Loader' on Thu, 9 Oct 2003: 1) What Directive? Check whether the Automotive Directive applies - it probably doesn't. If it doesn't, then the EMC Directive applies. The Low Voltage Directive may apply, depending on the battery voltage. The Machinery Directive might apply: it may depend on any mechanical handling features on the vehicle. 2) What is the conformity process(e.g. new approach, TCF)? Since EN 12895 exists, New Approach seems relevant: if not, the requirements would be in the Directive, not an EN. 3) Client requests testing to EN 12895 which seems appropriate, but is there anything else? If the EN covers emissions and immunity, another matter is electrical safety. 4) This thing is too large for our chamber for radiated immunity testing. In this month's Conformity there is an Article written by Bruce Fagley about testing large industrial systems. Granted the scope of the article was in-situ testing not this thing is too big for my chamber. However, in the article the author discusses how large systems are tested are tested outdoors for IEC 1000-4-3. My question is, is this method allowed only for in-situ testing, or can it be used when the EUT is so large that it cannot fit in the chamber? You probably can't do that, because your radiation source would breach spectrum management regulations. You may well need to go to a test house which has a big chamber. -- 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: emc_p...@symbol.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
Luggage Loader
This is a multi-part message in MIME format. Need some help determining the conformity process of an aircraft luggage loader. This is an electric vehicle that you see running around on the tarmac of a commercial airport loadding luggage onto aircraft. Not sure it matters, but the one I am referring happens to be for commuter aircraft not the large commercial aircraft. It is about 16 ft long, 70 inches wide and weighs about 6500 lbs. Questions I have are: 1) What Directive? 2) What is the conformity process(e.g. new approach, TCF)? 3) Client requests testing to EN 12895 which seems appropriate, but is there anything else? 4) This thing is too large for our chamber for radiated immunity testing. In this month's Conformity there is an Article written by Bruce Fagley about testing large industrial systems. Granted the scope of the article was in-situ testing not this thing is too big for my chamber. However, in the article the author discusses how large systems are tested are tested outdoors for IEC 1000-4-3. My question is, is this method allowed only for in-situ testing, or can it be used when the EUT is so large that it cannot fit in the chamber? Kind Regards, Sam Wismer Glacier Bkgrd.jpg
