Seeking licensed PE for thorough product review and Risk Assessment
Dear Colleagues, Teradyne is seeking the services of a Principal Mechanical Engineer, who is also a licensed PE to provide the guidance and leadership required to complete a thorough product review for Risk Assessment. This individual should possess the following skill sets and/or experiences. 1. ) Fault Tree Analysis (FTA) 2.) Risk Assessments 3.) Failure Mode Effects Analysis (FMEA) 4.) Reliability and /or Quality Assurance 5.) Incident Investigation Experiences 6.) Finite Element Analysis (FEA) 7.) Failure Analysis Your recommendations would be most appreciated. If questions, please contact me ASAP. Best Regards,Paul J Smith Teradyne, Inc., 179 Lincoln Street, MS-L22-19 Boston, MA 02111 paul.j.sm...@teradyne.com Voice 617-422-2997 Fax 603-843-7526 Pager: 1-800-skypage, PIN 1105510 ( USA only) cell 617-549-1308 --- 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: Michael Garretson:pstc_ad...@garretson.org Dave Healddavehe...@mediaone.net For policy questions, send mail to: Richard Nute: ri...@ieee.org Jim Bacher: j.bac...@ieee.org All emc-pstc postings are archived and searchable on the web at: http://www.rcic.com/ click on Virtual Conference Hall,
RE: board scanning on the cheap (sort of)
Hi Group, Didn't find much time lastly to contribute, but this topic always triggers something inside Do not forget that using such a system only the near field is found, in the orientation the probe determines. In general this has not much to do with the actual 3 or 10 meter emission. By performing relative measurements however, one gets a decent impression in terms of reducing or increasing values relative to a previous IDENTICAL measurement. The probe orientation as well as the distance MUST be well reproduced and the test should be repeated with several orientations of the probe. As an electric field probe (ideally) does not detect magnetic field and vice versa and both contribute to the total emitted radiation, a test in several directions and several operating modes should be conducted with both type of probes. One should also consider probing a PCB from 6 sides, as emission does not have to be maximal in the orthogonal direction of the top side of your PCB. If you're still enthiousiastic about such a project, consider buying a standard bi-conical antenna and create a 3m site on your parking using chicken mesh wire on the floor. I am sure you will get faster and more consistent results then using an XY table and close field probes. EMC is all about measurements in the far field of a source, both in terms of wavelength ( lambda/3 ) and geometrically relative to the EUT. Regards, Gert Gremmen, (Ing) ce-test, qualified testing === Web presence http://www.cetest.nl CE-shop http://www.cetest.nl/ce_shop.htm /-/ Compliance testing is our core business /-/ === -Original Message- From: owner-emc-p...@majordomo.ieee.org [mailto:owner-emc-p...@majordomo.ieee.org]On Behalf Of brent.dew...@us.datex-ohmeda.com Sent: Wednesday, August 08, 2001 10:03 PM To: emc-p...@majordomo.ieee.org Subject: board scanning on the cheap (sort of) With all this talk about visualization, I thought I'd toss in my bit. Here at Datex-Ohmeda we have a small NC mill sometimes used by the RD group to make small prototype parts, but it often sits idle. Since I have a spectrum analyzer and a variety of small dimension H and E field probes I've built, I thought it would be interesting to build the equivalent of an EMScan. The control program is being written in LabVIEW and is coming along pretty well. One nice thing about the mill is that I can program the scan height for any rectangle I define, so tall components can be hopped over. When it's all done, I should be able to play a frequency swept movie of the board on an intensity graph. The cheaper way to do this would be to find an older X-Y plotter and skip the height variation. If I ever get the beast done, it will be open source to LabVIEW users. Best regards, Brent DeWitt Datex-Ohmeda Louisville, CO --- 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: Michael Garretson:pstc_ad...@garretson.org Dave Healddavehe...@mediaone.net For policy questions, send mail to: Richard Nute: ri...@ieee.org Jim Bacher: j.bac...@ieee.org All emc-pstc postings are archived and searchable on the web at: http://www.rcic.com/ click on Virtual Conference Hall, attachment: Gert Gremmen.vcf
Re: EMI sniffer goggles
Interesting discussion. I doubt such a thing, if it's ever made, would work at an OATS. More likely a troubleshooting tool for an anechoic chamber. There ambients are zilch and what you see is from your device. Little break from the usual topics, but refreshing. Thanks! - Doug McKean --- 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: Michael Garretson:pstc_ad...@garretson.org Dave Healddavehe...@mediaone.net For policy questions, send mail to: Richard Nute: ri...@ieee.org Jim Bacher: j.bac...@ieee.org All emc-pstc postings are archived and searchable on the web at: http://www.rcic.com/ click on Virtual Conference Hall,
RE: ETSI EMC Standard
I have heard from 1 US lab and 1 European lab regarding lab capability. I realize that the radio immunity standard EN301489-1 will not be in effect until 2003. Does the lack of response mean we have time . . . or that the original chamber installations already covered that frequency range. I am curious to hear where the rest of the industry stands on this issue. Best regards, Don Umbdenstock Sensormatic -- From: umbdenst...@sensormatic.com[SMTP:umbdenst...@sensormatic.com] Reply To: umbdenst...@sensormatic.com Sent: Tuesday, August 07, 2001 1:19 PM To: emc-p...@majordomo.ieee.org Subject: RE: ETSI EMC Standard Regarding the change in the standard, has anyone started to look into an upgrade to their compact chambers for stre-e-e-etching the frequency to 2 GHz? If so, what upgrades did you find most cost effective for * signal generator * amplifier * antenna * sensor * e-field probe * chamber lining modifications Perhaps we can develop a database of options and trade-offs before we need to spend the big bucks. Don Umbdenstock Sensormatic ? -- From: wo...@sensormatic.com[SMTP:wo...@sensormatic.com] Reply To: wo...@sensormatic.com Sent: Tuesday, August 07, 2001 10:15 AM To: emc-p...@majordomo.ieee.org Subject:ETSI EMC Stadard The final draft of the proposed revision of ETSI EN 301 489-1 is in the voting stage. This standard sets the emissions and immunity requirements for most all transmitters. A major change has been made to the radiated immunity requirements by adding the frequencies between 1400 MHz and 2000 MHz. I was told that this change is being driven by CISPR and may be based upon a CISPR standard. Does anyone have any information in this regard? Richard Woods --- 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: Michael Garretson:pstc_ad...@garretson.org Dave Healddavehe...@mediaone.net For policy questions, send mail to: Richard Nute: ri...@ieee.org Jim Bacher: j.bac...@ieee.org All emc-pstc postings are archived and searchable on the web at: http://www.rcic.com/ click on Virtual Conference Hall, --- 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: Michael Garretson:pstc_ad...@garretson.org Dave Healddavehe...@mediaone.net For policy questions, send mail to: Richard Nute: ri...@ieee.org Jim Bacher: j.bac...@ieee.org All emc-pstc postings are archived and searchable on the web at: http://www.rcic.com/ click on Virtual Conference Hall, --- 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: Michael Garretson:pstc_ad...@garretson.org Dave Healddavehe...@mediaone.net For policy questions, send mail to: Richard Nute: ri...@ieee.org Jim Bacher: j.bac...@ieee.org All emc-pstc postings are archived and searchable on the web at: http://www.rcic.com/ click on Virtual Conference Hall,
RE: Wrist Medical Device with a GSM Link
Peter - Regarding the US and Canadian approvals - 1. I assume that the GSM radio module in question includes operation at 1900MHz and is approved here - if it is a 900/1800 MHz version only, it is a no go. 2. The final device must meet be re-approved both in US and Canda as a new radio device (integration), and this includes SAR!! Not all of the original test for need to be repeated. 3. I believe there are other wireless monitoring devices, using various radio standards already sold in US and Canada. 4. Since you asked - we are not in Europe, but... :)) Kindest regards, Kate Kathy M. MacLean President, APREL Laboratories -EMC-RF Safety-Antenna design/test-SAR/MPE- SAR Tools-Acoustics-Wireless- 51 Spectrum Way, Nepean, Ontario K2R 1E6 (613) 820-2730 fax (613) 820-4161 cell (613) 791-3777 Web site: http://www.aprel.com/ http://www.aprel.com - watch for our new web site coming soon! See you at the IEEE EMC Symposium, Montreal August 13-17, 2001 Booth 1330 -Original Message- From: Paolo Gemma [mailto:paolo.ge...@icn.siemens.it] Sent: August 10, 2001 5:00 AM To: Peter Merguerian; emc-p...@majordomo.ieee.org Subject: Re: Wrist Medical Device with a GSM Link At 04:54 PM 8/8/01 +0200, Peter Merguerian wrote: Dear All, I am looking into step by step procedure for approving a medical device - worn by patients with heart problems on the wrist on a daily basis. Device includes non-invasive sensors for diagnosis of body temperature, blood pressure, ECG and oximeter. The device includes a GSM modem by Siemens TC35, an antenna like on a cellphone, a lithium battery pack, a microcontroller unit, flash memory and a data link controller, all on printed boards within this high density packaged medical device. My questions are as follows: 1. What is the procedure to obtain GSM radio approvals in 1) Europe 2) Canada 3) US? 2. What are the applicable GSM radio standards in Europe only RTTE directive, Canada and US? 3. What are some well known labs in Europe which can give radio approvals quickly and efficiently. 4. Assuming the TC35 GSM modem module within the device has CE for Europe under the RTTE, is there a requirement to obtain radio approvals on the complete device in Europe? In Europe You shall to apply the RTTE directive for this directive If you use the module without any modification on antenna and so on you have only to test the EMC and the safety characteries of the products all is on self certification. The equipment, I think, is also under the medical directive that I don't know well . Ciao Paolo 5.. Assuming the TC35 GSM modem module within the device has US and Canada radio approvals, is there a requirement to obtain radio approvals on the complete device in North America? 6. Does Canada have a similar approval procedure like the FDA in the States regarding medical devices? 7. Can this product be FDA approved under the 510K program (ie is there a similar product out there)? 8. What would be the environmental requirements for this type of device? PETER S. MERGUERIAN Technical Director I.T.L. (Product Testing) Ltd. 26 Hacharoshet St., POB 211 Or Yehuda 60251, Israel Tel: + 972-(0)3-5339022 Fax: + 972-(0)3-5339019 Mobile: + 972-(0)54-838175 --- 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/ 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: Michael Garretson:pstc_ad...@garretson.org Dave Healddavehe...@mediaone.net For policy questions, send mail to: Richard Nute: ri...@ieee.org Jim Bacher: j.bac...@ieee.org All emc-pstc postings are archived and searchable on the web at: http://www.rcic.com/ http://www.rcic.com/%A0%A0%A0%A0 click on Virtual Conference Hall, _ Paolo Gemma Siemens Information and Communication Network spa Microwave Networks MW RD NSA EMC SS Padana sup. KM 158 20060 Cassina de'Pecchi (MI) Italy phone +39 02 9526 6587fax +39 02 9526 6203 mobile +39 348 3690185 e-mail paolo.ge...@icn.siemens.it _
Re: board scanning on the cheap (sort of)
Er..., I suppose your XY table have to be made of nylon or plastic, something that will not facilitate the common mode (surface) currents to flow. Tim Foo, (or just call me 'Tim') E-mail: f...@np.edu.sg ECE, School of Engineering, http://www.np.edu.sg/ece/ Tel: + 65 460 6143 Ngee Ann Polytechnic, Fax: + 65 467 1730 535 Clementi Road, Singapore 599489 brent.dewitt@us.datex-o hmeda.com To: emc-p...@majordomo.ieee.org Sent by: cc: (bcc: Wan Juang Foo/ece/staff/npnet) owner-emc-pstc@majordomSubject: board scanning on the cheap (sort of) o.ieee.org 08/09/01 04:02 AM Please respond to brent.dewitt With all this talk about visualization, I thought I'd toss in my bit. Here at Datex-Ohmeda we have a small NC mill sometimes used by the RD group to make small prototype parts, but it often sits idle. Since I have a spectrum analyzer and a variety of small dimension H and E field probes I've built, I thought it would be interesting to build the equivalent of an EMScan. The control program is being written in LabVIEW and is coming along pretty well. One nice thing about the mill is that I can program the scan height for any rectangle I define, so tall components can be hopped over. When it's all done, I should be able to play a frequency swept movie of the board on an intensity graph. The cheaper way to do this would be to find an older X-Y plotter and skip the height variation. If I ever get the beast done, it will be open source to LabVIEW users. Best regards, Brent DeWitt Datex-Ohmeda Louisville, CO --- 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: Michael Garretson:pstc_ad...@garretson.org Dave Healddavehe...@mediaone.net For policy questions, send mail to: Richard Nute: ri...@ieee.org Jim Bacher: j.bac...@ieee.org All emc-pstc postings are archived and searchable on the web at: http://www.rcic.com/ click on Virtual Conference Hall,
Re: EMI sniffer goggles
Um... This thread is getting more interesting. 1 millivolt per meter is about the size of it, at 3 m for the typical test failure. I suspect at 1 m or closer we will be measuring much more than 1 mV/m is (1000 microvolts/m or) 60 dBuV/m if the source is a high impedance source (most probably in the near field unless we are working in the ) but then we can never know for sure if it is High Z or Low Z. ;-) Some applied chemist could work hard on the idea of a glowing gas and that will make our lives very interesting. We will be measuring luminous intensity! probably with an optical instruments and some form of a camera in place of an antenna an a EMI receiver for electric field strength. :-) Tim Foo, (or just call me 'Tim') E-mail: f...@np.edu.sg ECE, School of Engineering, http://www.np.edu.sg/ece/ Tel: + 65 460 6143 Ngee Ann Polytechnic, Fax: + 65 467 1730 535 Clementi Road, Singapore 599489 Ken Javor ken.javor@emccompliancTo: Veit, Andy andy.v...@mts.com, EMC-PSTC Discussion Group e.com emc-p...@majordomo.ieee.org Sent by: cc: (bcc: Wan Juang Foo/ece/staff/npnet) owner-emc-pstc@majordomSubject: Re: EMI sniffer goggles o.ieee.org 08/08/01 10:59 PM Please respond to Ken Javor I hate to be a spoilsport but I believe we are also missing something which will react at millivolt or milliamp/meter field intensities. All these other sensors are reacting to relatively strong stimuli. -- From: Veit, Andy andy.v...@mts.com To: EMC-PSTC Discussion Group emc-p...@majordomo.ieee.org Subject: RE: EMI sniffer goggles Date: Wed, Aug 8, 2001, 7:23 AM Along the lines of EMI sensitive paper... There is such a thing for viewing magnetic fields, funnily enough. Its called Magnetic Viewing Paper and McMaster Carr has it for $14.22 for 27 square inches, p/n 5702K21. When the paper is laid over magnets, the paper shows the outline and shape of the field lines. Its handy for checking magnet assemblies for motors, and I have seen it used for this purpose. snip --- 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: Michael Garretson:pstc_ad...@garretson.org Dave Healddavehe...@mediaone.net For policy questions, send mail to: Richard Nute: ri...@ieee.org Jim Bacher: j.bac...@ieee.org All emc-pstc postings are archived and searchable on the web at: http://www.rcic.com/ click on Virtual Conference Hall,
Re: Medical devices in Japan
Thanks to everyone who replied on this thread. I've forwarded the responses to the original enquirer and doubtless they will contact anyone who offered further help as they feel appropriate. Regards Nick. At 03:02 +0100 1/8/2001, Nick Williams wrote: I've been asked if I know what the regime is for medical devices in Japan. I don't know anything about this, but if there's anyone out there who can give me a brief idea or possibly even some URLs to look at, I'd be grateful. Anyone in the business of providing consultancy in this area please let me know and I'll likely put the enquirer in touch direct. Thanks and regards Nick. --- 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: Michael Garretson:pstc_ad...@garretson.org Dave Healddavehe...@mediaone.net For policy questions, send mail to: Richard Nute: ri...@ieee.org Jim Bacher: j.bac...@ieee.org All emc-pstc postings are archived and searchable on the web at: http://www.rcic.com/ click on Virtual Conference Hall,
Re: Wrist Medical Device with a GSM Link
At 04:54 PM 8/8/01 +0200, Peter Merguerian wrote: Dear All, I am looking into step by step procedure for approving a medical device - worn by patients with heart problems on the wrist on a daily basis. Device includes non-invasive sensors for diagnosis of body temperature, blood pressure, ECG and oximeter. The device includes a GSM modem by Siemens TC35, an antenna like on a cellphone, a lithium battery pack, a microcontroller unit, flash memory and a data link controller, all on printed boards within this high density packaged medical device. My questions are as follows: 1. What is the procedure to obtain GSM radio approvals in 1) Europe 2) Canada 3) US? 2. What are the applicable GSM radio standards in Europe only RTTE directive, Canada and US? 3. What are some well known labs in Europe which can give radio approvals quickly and efficiently. 4. Assuming the TC35 GSM modem module within the device has CE for Europe under the RTTE, is there a requirement to obtain radio approvals on the complete device in Europe? In Europe You shall to apply the RTTE directive for this directive If you use the module without any modification on antenna and so on you have only to test the EMC and the safety characteries of the products all is on self certification. The equipment, I think, is also under the medical directive that I don't know well . Ciao Paolo 5.. Assuming the TC35 GSM modem module within the device has US and Canada radio approvals, is there a requirement to obtain radio approvals on the complete device in North America? 6. Does Canada have a similar approval procedure like the FDA in the States regarding medical devices? 7. Can this product be FDA approved under the 510K program (ie is there a similar product out there)? 8. What would be the environmental requirements for this type of device? PETER S. MERGUERIAN Technical Director I.T.L. (Product Testing) Ltd. 26 Hacharoshet St., POB 211 Or Yehuda 60251, Israel Tel: + 972-(0)3-5339022 Fax: + 972-(0)3-5339019 Mobile: + 972-(0)54-838175 --- 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: Michael Garretson:pstc_ad...@garretson.org Dave Healddavehe...@mediaone.net For policy questions, send mail to: Richard Nute: ri...@ieee.org Jim Bacher: j.bac...@ieee.org All emc-pstc postings are archived and searchable on the web at: http://www.rcic.com/ click on Virtual Conference Hall, -- Paolo Gemma Siemens Information and Communication Network spa Microwave Networks MW RD NSA EMC SS Padana sup. KM 158 20060 Cassina de'Pecchi (MI) Italy phone +39 02 9526 6587fax +39 02 9526 6203 mobile +39 348 3690185 e-mail paolo.ge...@icn.siemens.it --
Re: board scanning on the cheap (sort of)
I think this was known as Kirlian photogrphy - spelling may be wrong. It can detect the electrostatic charge surrounding living tissue. Ralph Cameron - Original Message - From: geor...@lexmark.com To: emc-p...@ieee.org Sent: Thursday, August 09, 2001 4:00 PM Subject: board scanning on the cheap (sort of) Well, this discussion has reached the point where I must add something I read about some years ago. It goes something like this: For many years, Russia was known to conduct many experiments involving paranormal activity, probably to determine if there were any military value in such phenomena as psychic communications etc., if in fact they existed. I was surprised to see an article in a National Geographic years ago that told of one such experiment. It involved photography of the aura (presumably electromagnetic fields) that surround the human body. The peaks in this aura, or field were found to be consistent with the primary acupuncture points long before identified by the Chinese. A faith (hand-on) healing was photographed, revealing that the aura of the healer diminished during the process while the aura of the person being healed increased, i.e. a possible transfer of energy. The point of all this is if the Russians truly developed a means to photograph the low power EMF surrounding humans, it would seem that the same technique would also photograph the EMF surrounding PCBs etc. I have no comment on whether any of the above is true science, but I DID read it in the generally respected National Geographic, albeit not a scientific journal. George Alspaugh --- 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: Michael Garretson:pstc_ad...@garretson.org Dave Healddavehe...@mediaone.net For policy questions, send mail to: Richard Nute: ri...@ieee.org Jim Bacher: j.bac...@ieee.org All emc-pstc postings are archived and searchable on the web at: http://www.rcic.com/ click on Virtual Conference Hall, --- 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: Michael Garretson:pstc_ad...@garretson.org Dave Healddavehe...@mediaone.net For policy questions, send mail to: Richard Nute: ri...@ieee.org Jim Bacher: j.bac...@ieee.org All emc-pstc postings are archived and searchable on the web at: http://www.rcic.com/ click on Virtual Conference Hall,
RE: board scanning on the cheap (sort of)
I think your talking about Kirlian photography.Here is something verbatim from a web page that deals with it. http://www.synergy-co.com/kirlian.html#equipment Equipment Used to Produce Kirlian Images Kirlian photographs are created utilizing a metal plate, and a generator or oscillator to produce a high voltage field of variable pulse and frequency. There is no light used in this process. Through the action of high frequency fields, electrons are emitted from the body of an organism and this energy is dissipated into a photographic emulsion, as light would be. Different colors or shadings appear in a brilliant corona surrounding the object, depending upon the type of film used. I think the light source is Cherenkov radiation which I understand to be photons emitted when electrons move to lower energy orbits. Presumably the applied high frequency field energizes the atoms and moves the electrons to higher energy states? That might be an interesting way to find points for ESD testing? Perhaps it shows where the field tends to concentrate. The Kirlian pictures are always seem to have pointy fields. Well, that's at least 2 cents. -George -Original Message- From: geor...@lexmark.com [mailto:geor...@lexmark.com] Sent: Thursday, August 09, 2001 1:00 PM To: emc-p...@ieee.org Subject:board scanning on the cheap (sort of) Well, this discussion has reached the point where I must add something I read about some years ago. It goes something like this: For many years, Russia was known to conduct many experiments involving paranormal activity, probably to determine if there were any military value in such phenomena as psychic communications etc., if in fact they existed. I was surprised to see an article in a National Geographic years ago that told of one such experiment. It involved photography of the aura (presumably electromagnetic fields) that surround the human body. The peaks in this aura, or field were found to be consistent with the primary acupuncture points long before identified by the Chinese. A faith (hand-on) healing was photographed, revealing that the aura of the healer diminished during the process while the aura of the person being healed increased, i.e. a possible transfer of energy. The point of all this is if the Russians truly developed a means to photograph the low power EMF surrounding humans, it would seem that the same technique would also photograph the EMF surrounding PCBs etc. I have no comment on whether any of the above is true science, but I DID read it in the generally respected National Geographic, albeit not a scientific journal. George Alspaugh --- 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: Michael Garretson:pstc_ad...@garretson.org Dave Healddavehe...@mediaone.net For policy questions, send mail to: Richard Nute: ri...@ieee.org Jim Bacher: j.bac...@ieee.org All emc-pstc postings are archived and searchable on the web at: http://www.rcic.com/ click on Virtual Conference Hall, --- 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: Michael Garretson:pstc_ad...@garretson.org Dave Healddavehe...@mediaone.net For policy questions, send mail to: Richard Nute: ri...@ieee.org Jim Bacher: j.bac...@ieee.org All emc-pstc postings are archived and searchable on the web at: http://www.rcic.com/ click on Virtual Conference Hall,
