RE: EN standard for pacemaker immunity
Only part 1 of EN45502-1 has been published according to the CENELEC site. The standard says it supports the essential requirements of Directive 90/385/EEC. As Ned indicated, several other parts are to be published and will contain the particulars for various types of devices. It may well be that this more encompassing series will supercede EN 50061. Clause 27.1 provides a very high level requirement of no harm caused by external EMF. A note says As a first guide, consider a magnetic field intensity of 150A/m falling inversely with frequency above 100 kHz to a maximum test frequency of 30 MHz. The electric field need not be investigated. Richard Woods -- From: Ned Devine [SMTP:ndev...@entela.com] Sent: Monday, March 20, 2000 2:29 PM To: 'plaw...@west.net'; EMC-PSTC Subject: RE: EN standard for pacemaker immunity Hi, A couple of comments on the pacemaker standards. 1. Under the AMID, you must involve a Notified Body. The only reasonable route to the CE marking is Annex 2 (full QA) and submittal of the Design Dossier. 2. All accessories to a AIMD (i.e. programmers) are also under the scope of the AIMD. 3. Its been a while since I looked, but I think the correct standard is EN 45502-1. There are a number of part 2's. I am not sure if they have been released. 4. Standards are not that important. Because you have to use a NB for Annex 2 and submittal of the Design Dossier. The NB will tell you what they want to see. Ned Devine Entela, Inc. Program Manager III Phone 616 248 9671 Fax 616 574 9752 e-mail ndev...@entela.com -Original Message- From: plaw...@west.net [mailto:plaw...@west.net] Sent: Monday, March 20, 2000 12:46 PM To: EMC-PSTC Subject: Re: EN standard for pacemaker immunity As an excerise, I tried to find the directive that this standard was harmonized under. I looked on the Europa site under the EMC, Medical Device, and Active Implantable Medical Device directives to no avail. http://europa.eu.int/comm/enterprise/newapproach/standardization/harmstds/re flist.html Is this standard still pending for the EU? On Thu, 16 Mar 2000 09:53:01 -0500, wo...@sensormatic.com wrote: Mike, A1:1996 of EN50061:1995 has the EMC requirements for implantable cardiac pacemakers. It can be ordered on the web from BSI. Richard Woods Sunning in Florida -- From: Michael Taylor [SMTP:mtay...@hach.com] Sent: Thursday, March 16, 2000 9:19 AM To: emc-p...@majordomo.ieee.org Subject: EN standard for pacemaker immunity Greetings all. An issue came up that needs answers as soon as possible. Does anyone in the group know if there are any European standards covering pacemaker (and similar devices) immunity to Electric Magnetic fields. A search of Global Eng. Documents product list proved fruitless. I'm sure there is someone in the group that has the answer. I will be most grateful for any answers or leads on this issue. Best regards. Michael Taylor Snowed-in, in Colorado. --- This message is from the IEEE EMC Society Product Safety Technical Committee emc-pstc discussion list. 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: Jim Bacher: jim_bac...@mail.monarch.com Michael Garretson:pstc_ad...@garretson.org For policy questions, send mail to: Richard Nute: ri...@ieee.org --- This message is from the IEEE EMC Society Product Safety Technical Committee emc-pstc discussion list. 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: Jim Bacher: jim_bac...@mail.monarch.com Michael Garretson:pstc_ad...@garretson.org For policy questions, send mail to: Richard Nute: ri...@ieee.org --- This message is from the IEEE EMC Society Product Safety Technical Committee emc-pstc discussion
RE: EN standard for pacemaker immunity
Hi, A couple of comments on the pacemaker standards. 1. Under the AMID, you must involve a Notified Body. The only reasonable route to the CE marking is Annex 2 (full QA) and submittal of the Design Dossier. 2. All accessories to a AIMD (i.e. programmers) are also under the scope of the AIMD. 3. Its been a while since I looked, but I think the correct standard is EN 45502-1. There are a number of part 2's. I am not sure if they have been released. 4. Standards are not that important. Because you have to use a NB for Annex 2 and submittal of the Design Dossier. The NB will tell you what they want to see. Ned Devine Entela, Inc. Program Manager III Phone 616 248 9671 Fax 616 574 9752 e-mail ndev...@entela.com -Original Message- From: plaw...@west.net [mailto:plaw...@west.net] Sent: Monday, March 20, 2000 12:46 PM To: EMC-PSTC Subject: Re: EN standard for pacemaker immunity As an excerise, I tried to find the directive that this standard was harmonized under. I looked on the Europa site under the EMC, Medical Device, and Active Implantable Medical Device directives to no avail. http://europa.eu.int/comm/enterprise/newapproach/standardization/harmstds/re flist.html Is this standard still pending for the EU? On Thu, 16 Mar 2000 09:53:01 -0500, wo...@sensormatic.com wrote: Mike, A1:1996 of EN50061:1995 has the EMC requirements for implantable cardiac pacemakers. It can be ordered on the web from BSI. Richard Woods Sunning in Florida -- From: Michael Taylor [SMTP:mtay...@hach.com] Sent: Thursday, March 16, 2000 9:19 AM To: emc-p...@majordomo.ieee.org Subject: EN standard for pacemaker immunity Greetings all. An issue came up that needs answers as soon as possible. Does anyone in the group know if there are any European standards covering pacemaker (and similar devices) immunity to Electric Magnetic fields. A search of Global Eng. Documents product list proved fruitless. I'm sure there is someone in the group that has the answer. I will be most grateful for any answers or leads on this issue. Best regards. Michael Taylor Snowed-in, in Colorado. --- This message is from the IEEE EMC Society Product Safety Technical Committee emc-pstc discussion list. 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: Jim Bacher: jim_bac...@mail.monarch.com Michael Garretson:pstc_ad...@garretson.org For policy questions, send mail to: Richard Nute: ri...@ieee.org --- This message is from the IEEE EMC Society Product Safety Technical Committee emc-pstc discussion list. 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: Jim Bacher: jim_bac...@mail.monarch.com Michael Garretson:pstc_ad...@garretson.org For policy questions, send mail to: Richard Nute: ri...@ieee.org
RE: EN standard for pacemaker immunity
The CENELC site, http://www.cenelec.be/ http://www.cenelec.be/ , also shows that the standard has not been published in the OJ. Richard Woods -- From: plaw...@west.net [SMTP:plaw...@west.net] Sent: Monday, March 20, 2000 12:46 PM To: EMC-PSTC Subject: Re: EN standard for pacemaker immunity As an excerise, I tried to find the directive that this standard was harmonized under. I looked on the Europa site under the EMC, Medical Device, and Active Implantable Medical Device directives to no avail. http://europa.eu.int/comm/enterprise/newapproach/standardization/harmstds/re flist.html Is this standard still pending for the EU? On Thu, 16 Mar 2000 09:53:01 -0500, wo...@sensormatic.com wrote: Mike, A1:1996 of EN50061:1995 has the EMC requirements for implantable cardiac pacemakers. It can be ordered on the web from BSI. Richard Woods Sunning in Florida -- From: Michael Taylor [SMTP:mtay...@hach.com] Sent: Thursday, March 16, 2000 9:19 AM To: emc-p...@majordomo.ieee.org Subject: EN standard for pacemaker immunity Greetings all. An issue came up that needs answers as soon as possible. Does anyone in the group know if there are any European standards covering pacemaker (and similar devices) immunity to Electric Magnetic fields. A search of Global Eng. Documents product list proved fruitless. I'm sure there is someone in the group that has the answer. I will be most grateful for any answers or leads on this issue. Best regards. Michael Taylor Snowed-in, in Colorado. --- This message is from the IEEE EMC Society Product Safety Technical Committee emc-pstc discussion list. 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: Jim Bacher: jim_bac...@mail.monarch.com Michael Garretson:pstc_ad...@garretson.org For policy questions, send mail to: Richard Nute: ri...@ieee.org --- This message is from the IEEE EMC Society Product Safety Technical Committee emc-pstc discussion list. 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: Jim Bacher: jim_bac...@mail.monarch.com Michael Garretson:pstc_ad...@garretson.org For policy questions, send mail to: Richard Nute: ri...@ieee.org
Re: EN standard for pacemaker immunity
As an excerise, I tried to find the directive that this standard was harmonized under. I looked on the Europa site under the EMC, Medical Device, and Active Implantable Medical Device directives to no avail. http://europa.eu.int/comm/enterprise/newapproach/standardization/harmstds/reflist.html Is this standard still pending for the EU? On Thu, 16 Mar 2000 09:53:01 -0500, wo...@sensormatic.com wrote: Mike, A1:1996 of EN50061:1995 has the EMC requirements for implantable cardiac pacemakers. It can be ordered on the web from BSI. Richard Woods Sunning in Florida -- From: Michael Taylor [SMTP:mtay...@hach.com] Sent: Thursday, March 16, 2000 9:19 AM To: emc-p...@majordomo.ieee.org Subject: EN standard for pacemaker immunity Greetings all. An issue came up that needs answers as soon as possible. Does anyone in the group know if there are any European standards covering pacemaker (and similar devices) immunity to Electric Magnetic fields. A search of Global Eng. Documents product list proved fruitless. I'm sure there is someone in the group that has the answer. I will be most grateful for any answers or leads on this issue. Best regards. Michael Taylor Snowed-in, in Colorado. --- This message is from the IEEE EMC Society Product Safety Technical Committee emc-pstc discussion list. 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: Jim Bacher: jim_bac...@mail.monarch.com Michael Garretson:pstc_ad...@garretson.org For policy questions, send mail to: Richard Nute: ri...@ieee.org
RE: Dithered clocks and EMC - BEWARE
Paolo, Thank you for the information. I suspect that you are correct as to the critical nature of the frequency modulation method. The design engineer picked the device, probably as the cheapest vendor. The device did not behave as I expected, based on some Internet research of dithered clock technology. We were very pressed for time, but I hope someday to spend some more looking at this technology. Perhaps my experience explains the digital TV set interference, since all such devices are obviously not the same. Scott Lacey -Original Message- From: paolo.ronc...@compuprint.it [SMTP:paolo.ronc...@compuprint.it] Sent: Monday, March 20, 2000 5:21 AM To: emc-p...@ieee.org Subject:RE: Dithered clocks and EMC - BEWARE I have a very succesfull experience with SSCG (Spread Spectrum Clock Generation) that is a patented technology used to intentionally spread the energy of oscillators and clock signals and any signal derived from the clock. I am sure Keith Hardin knows it first-hand because he is one of the developers ! We have been using an SSCG chip since 1995 on most of the electronics of our printers - most of them class B devices, with oscillator frequencies in the range 24 - 32 MHz. We even managed to get significant cost reductions by switching from 4-layer to 2-layer boards and still passing CISPR22 and FCC class B limits for radiated emissions. One point that seems not to have come up in this discussion is the kind of dithering we are talking about. In SSCG the main clock frequency is modulated, but just ANY frequency modulation is not enough ! Key is the wave-shape of the modulating function, and that is the crucial point in the SSCG patent (Keith, correct me if I'm wrong). The trick is to maximize the rate of change of the function representing the frequency modulation, so that the oscillator spends the minimum time on any given frequency within the modulating range, thus avoiding additional peaks in the emission spectrum. The modulating function in the SSCG technique does just that. This is best explained in the first (to my knowledge) publication on the subject (here, too, Keith knows much more !!) : K.B.Hardin, J.T.Fessler, D.R.Bush (Lexmark Intl.): Spread Spectrum Clock Generation for the Reduction of Radiated Emissions - 1994 IEEE Intl. Symposium on EMC, August 1994 Chicago (Symposium Record page 227) I suspect an explanation to Scott's problem may be that he didn't use the SSCG technique but another form of dithering that was not controlled in such a way as to get the flat frequency distribution that you get with SSCG. Also the amount of frequency deviation can be important. The attenuation you get in quasi-peak (QP) readings is dependent on that. I hope Scott can give us more details. As to the problems with digital TV, I honestly don't have any knowledge about that, but I remember the same inventors of SSCG did a study on interference potential of this technique : K.B.Hardin, J.T.Fessler, D.R.Bush (Lexmark Intl.): A Study of the Interference Potential of Spread Spectrum Clock Generation Techniques - 1995 IEEE Intl. Symposium on EMC Atlanta ( Symposium Record page 624). Hope this helps. Paolo Roncone Compuprint s.p.a. - Italy --- This message is from the IEEE EMC Society Product Safety Technical Committee emc-pstc discussion list. To cancel your subscription, send mail to: majord...@ieee.org mailto:majord...@ieee.org with the single line: unsubscribe emc-pstc For help, send mail to the list administrators: Jim Bacher: jim_bac...@mail.monarch.com mailto:jim_bac...@mail.monarch.com Michael Garretson:pstc_ad...@garretson.org mailto:pstc_ad...@garretson.org For policy questions, send mail to: Richard Nute: ri...@ieee.org mailto:ri...@ieee.org --- This message is from the IEEE EMC Society Product Safety Technical Committee emc-pstc discussion list. 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: Jim Bacher: jim_bac...@mail.monarch.com Michael Garretson:pstc_ad...@garretson.org For policy questions, send mail to: Richard Nute: ri...@ieee.org
Test for edge sharpness
Is there an EN or IEC standard for testing sharpness of edges similar to UL 1439, Tests for Sharpness of Edges on Equipment? Richard Woods --- This message is from the IEEE EMC Society Product Safety Technical Committee emc-pstc discussion list. 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: Jim Bacher: jim_bac...@mail.monarch.com Michael Garretson:pstc_ad...@garretson.org For policy questions, send mail to: Richard Nute: ri...@ieee.org
Re: Appliance Inlet Integral to Power Cord
I have had products with this type of construction. I have products with IEC-320-C14 inlet molded power cords that I have sent through VDE for IEC 60950 / EN 60950 approval and I have not had any compliance issues. I have also owned a number of UL /CSA approved computer monitors with this construction. 1. Does anyone have a problem with this construction? Customers may find this inconvenient and most devices use the panel mounted inlets rather than the cord mounted inlets. However, this is just a customer acceptance issue, not a regulatory issue. 2. Does IEC 60950 / UL 1950 prohibit this construction? No. This construction is acceptable. 3. Has anyone approved a unit having the above described construction? Yes. I have had UL, CSA and VDE accept this construction. Ted Eckert Regulatory Compliance Engineer American Power Conversion Corporation teck...@apcc.com The items contained in this e-mail reflect the personal opinions of the writer and are only provided for the assistance of the reader. The writer is not speaking in an official capacity for APC nor representing APC's official position on any matter. Please respond to pmerguer...@itl.co.il (Peter Merguerian) To: emc-p...@majordomo.ieee.org cc:(bcc: Ted Eckert/SDD/NAM/APCC) From: pmerguer...@itl.co.il (Peter Merguerian) on 03/20/2000 08:07 AM Subject: Appliance Inlet Integral to Power Cord Dear All, I have an ITE product with a power cord terminated at the end with a molded-on IEC320 inlet (similar to an inlet used on an appliance but this one is terminated at the end of the cord). This inlet is used to mate with a detachable cord set in the field. Q. Does any one have a problem with this construction? My concern is that being on the floor, the and its connections might be subjected to abuse. Q. I was unable to find a clause in IEC950/UL1950 which does not allow this type of construction. It may be part of the national witing rules (such as the US/Candian NEC/CEC) but I have not done a research yet. Q. Has anyone Approved a unit having the above described construction? Thanks and Best Regards Peter Merguerian Managing Director Product Testing Division I.T.L. (Product Testing) Ltd. Hacharoshet 26, POB 211 Or Yehuda 60251, Israel Tel: 972-3-5339022 Fax: 972-3-5339019 e-mail: pmerguer...@itl.co.il website: http://www.itl.co.il --- This message is from the IEEE EMC Society Product Safety Technical Committee emc-pstc discussion list. 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: Jim Bacher: jim_bac...@mail.monarch.com Michael Garretson:pstc_ad...@garretson.org For policy questions, send mail to: Richard Nute: ri...@ieee.org --- This message is from the IEEE EMC Society Product Safety Technical Committee emc-pstc discussion list. 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: Jim Bacher: jim_bac...@mail.monarch.com Michael Garretson:pstc_ad...@garretson.org For policy questions, send mail to: Richard Nute: ri...@ieee.org
Re: CB SCHEME
Hello Mr. Nakamura, The CB-Scheme in an international scheme, under the auspices of the IEC, which provides a means for acceptance of test-data (and reports - in some cases) between the testing certification agencies of 30+ countries. There is no direct relationship to LVD and EMC directives although products which fall under the LVD may be served by the CB-Scheme. The main website is at www.cbscheme.org Regards, Art Michael Int'l Product Safety News A.E. Michael, Editor 166 Congdon St. East P.O. Box 1561 Middletown CT 06457 U.S.A. Phone : (860) 344-1651 Fax: (860) 346-9066 Email : i...@connix.com Website: http://www.safetylink.com ISSN : 1040-7529 On Mon, 20 Mar 2000 jakam...@naka.melco.co.jp wrote: Dear All, What is CB SCHEME? and the relation to the LVD and EMC? Thank you in advance, Jun Nakamura --- This message is from the IEEE EMC Society Product Safety Technical Committee emc-pstc discussion list. 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: Jim Bacher: jim_bac...@mail.monarch.com Michael Garretson:pstc_ad...@garretson.org For policy questions, send mail to: Richard Nute: ri...@ieee.org --- This message is from the IEEE EMC Society Product Safety Technical Committee emc-pstc discussion list. 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: Jim Bacher: jim_bac...@mail.monarch.com Michael Garretson:pstc_ad...@garretson.org For policy questions, send mail to: Richard Nute: ri...@ieee.org
Appliance Inlet Integral to Power Cord
Dear All, I have an ITE product with a power cord terminated at the end with a molded-on IEC320 inlet (similar to an inlet used on an appliance but this one is terminated at the end of the cord). This inlet is used to mate with a detachable cord set in the field. Q. Does any one have a problem with this construction? My concern is that being on the floor, the and its connections might be subjected to abuse. Q. I was unable to find a clause in IEC950/UL1950 which does not allow this type of construction. It may be part of the national witing rules (such as the US/Candian NEC/CEC) but I have not done a research yet. Q. Has anyone Approved a unit having the above described construction? Thanks and Best Regards Peter Merguerian Managing Director Product Testing Division I.T.L. (Product Testing) Ltd. Hacharoshet 26, POB 211 Or Yehuda 60251, Israel Tel: 972-3-5339022 Fax: 972-3-5339019 e-mail: pmerguer...@itl.co.il website: http://www.itl.co.il --- This message is from the IEEE EMC Society Product Safety Technical Committee emc-pstc discussion list. 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: Jim Bacher: jim_bac...@mail.monarch.com Michael Garretson:pstc_ad...@garretson.org For policy questions, send mail to: Richard Nute: ri...@ieee.org
Re: CB SCHEME
Dear Nakamura-san; The best explanation of the CB Scheme is at www.cbscheme.org . It is a global reciprocity agreement dealing with IEC 60950 for the safety of ITE products. If one CB (certification body) generates a CB test report for a product, all other members are to accept the test results unless they discover an error in the report. Testing to IEC 60950, plus any country differences, is one of several ways to show conformity to the LVD. It has nothing to do with the EMC Directive. Regards, George Alspaugh jakamura%naka.melco.co...@interlock.lexmark.com on 03/20/2000 07:20:47 AM Please respond to jakamura%naka.melco.co...@interlock.lexmark.com To: emc-pstc%majordomo.ieee@interlock.lexmark.com cc:(bcc: George Alspaugh/Lex/Lexmark) Subject: CB SCHEME Dear All, What is CB SCHEME? and the relation to the LVD and EMC? Thank you in advance, Jun Nakamura --- This message is from the IEEE EMC Society Product Safety Technical Committee emc-pstc discussion list. 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: Jim Bacher: jim_bac...@mail.monarch.com Michael Garretson:pstc_ad...@garretson.org For policy questions, send mail to: Richard Nute: ri...@ieee.org
CB SCHEME
Dear All, What is CB SCHEME? and the relation to the LVD and EMC? Thank you in advance, Jun Nakamura --- This message is from the IEEE EMC Society Product Safety Technical Committee emc-pstc discussion list. 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: Jim Bacher: jim_bac...@mail.monarch.com Michael Garretson:pstc_ad...@garretson.org For policy questions, send mail to: Richard Nute: ri...@ieee.org
RE: Dithered clocks and EMC - BEWARE
I have a very succesfull experience with SSCG (Spread Spectrum Clock Generation) that is a patented technology used to intentionally spread the energy of oscillators and clock signals and any signal derived from the clock. I am sure Keith Hardin knows it first-hand because he is one of the developers ! We have been using an SSCG chip since 1995 on most of the electronics of our printers - most of them class B devices, with oscillator frequencies in the range 24 - 32 MHz. We even managed to get significant cost reductions by switching from 4-layer to 2-layer boards and still passing CISPR22 and FCC class B limits for radiated emissions. One point that seems not to have come up in this discussion is the kind of dithering we are talking about. In SSCG the main clock frequency is modulated, but just ANY frequency modulation is not enough ! Key is the wave-shape of the modulating function, and that is the crucial point in the SSCG patent (Keith, correct me if I'm wrong). The trick is to maximize the rate of change of the function representing the frequency modulation, so that the oscillator spends the minimum time on any given frequency within the modulating range, thus avoiding additional peaks in the emission spectrum. The modulating function in the SSCG technique does just that. This is best explained in the first (to my knowledge) publication on the subject (here, too, Keith knows much more !!) : K.B.Hardin, J.T.Fessler, D.R.Bush (Lexmark Intl.): Spread Spectrum Clock Generation for the Reduction of Radiated Emissions - 1994 IEEE Intl. Symposium on EMC, August 1994 Chicago (Symposium Record page 227) I suspect an explanation to Scott's problem may be that he didn't use the SSCG technique but another form of dithering that was not controlled in such a way as to get the flat frequency distribution that you get with SSCG. Also the amount of frequency deviation can be important. The attenuation you get in quasi-peak (QP) readings is dependent on that. I hope Scott can give us more details. As to the problems with digital TV, I honestly don't have any knowledge about that, but I remember the same inventors of SSCG did a study on interference potential of this technique : K.B.Hardin, J.T.Fessler, D.R.Bush (Lexmark Intl.): A Study of the Interference Potential of Spread Spectrum Clock Generation Techniques - 1995 IEEE Intl. Symposium on EMC Atlanta ( Symposium Record page 624). Hope this helps. Paolo Roncone Compuprint s.p.a. - Italy --- This message is from the IEEE EMC Society Product Safety Technical Committee emc-pstc discussion list. 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: Jim Bacher: jim_bac...@mail.monarch.com Michael Garretson:pstc_ad...@garretson.org For policy questions, send mail to: Richard Nute: ri...@ieee.org
RE: European EPA
Peter, Each country will have its own national body, here in the UK it is the Environment Agency. http://www.environment-agency.gov.uk/ Best regards, Andy. -- From: pmerguer...@itl.co.il[SMTP:pmerguer...@itl.co.il] Reply To: pmerguer...@itl.co.il Sent: 17 March 2000 16:17 To: emc-p...@majordomo.ieee.org Subject: European EPA Hello All, Does anyone know the equivalent of the US Environmental Protection Agency (EPA) in Europe? Thanks Peter Merguerian Managing Director Product Testing Division I.T.L. (Product Testing) Ltd. Hacharoshet 26, POB 211 Or Yehuda 60251, Israel Tel: 972-3-5339022 Fax: 972-3-5339019 e-mail: pmerguer...@itl.co.il website: http://www.itl.co.il --- This message is from the IEEE EMC Society Product Safety Technical Committee emc-pstc discussion list. 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: Jim Bacher: jim_bac...@mail.monarch.com Michael Garretson:pstc_ad...@garretson.org For policy questions, send mail to: Richard Nute: ri...@ieee.org --- This message is from the IEEE EMC Society Product Safety Technical Committee emc-pstc discussion list. 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: Jim Bacher: jim_bac...@mail.monarch.com Michael Garretson:pstc_ad...@garretson.org For policy questions, send mail to: Richard Nute: ri...@ieee.org
Unusual System Glitchs
Hi All, We discussed at some length jingling change ESD and its relation to system operation some time ago. Along that line of unusual sources of system upset is multiple (up to hundreds) of ESD events in cushions of office chairs in the minute after a person rises from some chairs. The energy is radiated from metal legs and has wreaked havoc with many electronic systems, including those upon which human lives depend. I posted over the weekend my EOS/ESD Symposium paper titled A New Type of Furniture ESD and Its Implications which describes events of this type. The paper was awarded the New Phenomena award by the Symposium in 1993, the year it was published. You can see the paper at www.dsmith.org. Page down to Technical Information and Downloads and a link to the PDF file is listed in that section. The only evidence the events are happening is the EM fields radiated from the chair. The events are hidden inside the chair and not obvious to the person in the chair. I would be interested in hearing other stories from the group on system upsets caused by unusual immunity problems. Doug -- --- ___ _ Doug Smith \ / ) P.O. Box 1457 = Los Gatos, CA 95031-1457 _ / \ / \ _ TEL/FAX: 408-356-4186/358-3799 / /\ \ ] / /\ \ Mobile: 408-858-4528 | q-( ) | o |Email: d...@dsmith.org \ _ /]\ _ / Website: http://www.dsmith.org --- --- This message is from the IEEE EMC Society Product Safety Technical Committee emc-pstc discussion list. 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: Jim Bacher: jim_bac...@mail.monarch.com Michael Garretson:pstc_ad...@garretson.org For policy questions, send mail to: Richard Nute: ri...@ieee.org
