RE: Burst and surge tests
Good People I speak only for myself, and perhaps for my dog, but definitely not for my cat or employer... It is difficult for a component SMPS mfr to say that the outputs will stay within specified tolerance *DURING* these tests; because we cannot control the ultimate end-use installation. There are, in fact, some end-use constructions that will probably not be able to pass either Criterion, for any reasonable-cost SMPS. luck, Brian -Original Message- From: emc-p...@ieee.org [mailto:emc-p...@ieee.org]On Behalf Of John Woodgate Sent: Thursday, May 18, 2006 7:31 AM To: emc-p...@ieee.org Subject: Re: Burst and surge tests In message tfsre...@leco.com, dated Thu, 18 May 2006, brian_ku...@leco.com writes So, we have specified that the output of power supplies must not cause our electronics to malfunction during the 4-4 or 4-5 tests. We specify that the DC output of a power supply can not go out of spec during these tests. Effectively, you are applying Criterion A instead of B, and indeed that's usually very difficult to do. That's why Criterion B exists. But there may be no other solution if you buy-in the power supply, unless you can co-operate with the supplier to agree a less stringent requirement that does not result in your own electronics being compromised. -- OOO - Own Opinions Only. Try www.jmwa.demon.co.uk and www.isce.org.uk 2006 is YMMVI- Your mileage may vary immensely. John Woodgate, J M Woodgate and Associates, Rayleigh, Essex UK - This message is from the IEEE Product Safety Engineering Society emc-pstc discussion list.Website: http://www.ieee-pses.org/ To post a message to the list, send your e-mail to emc-p...@ieee.org Instructions: http://listserv.ieee.org/request/user-guide.html List rules: http://www.ieee-pses.org/listrules.html For help, send mail to the list administrators: Scott Douglas emcp...@ptcnh.net Mike Cantwell mcantw...@ieee.org For policy questions, send mail to: Jim Bacher: j.bac...@ieee.org David Heald:emc-p...@daveheald.com All emc-pstc postings are archived and searchable on the web at: http://www.ieeecommunities.org/emc-pstc
Sick Building in Australia blamed upon cell phone towers
Did any of you see the following article in Interference Technology? http://www.rmit.edu.au/browse;ID=ue9soxm9ujv2 - Robert - - This message is from the IEEE Product Safety Engineering Society emc-pstc discussion list.Website: http://www.ieee-pses.org/ To post a message to the list, send your e-mail to emc-p...@ieee.org Instructions: http://listserv.ieee.org/request/user-guide.html List rules: http://www.ieee-pses.org/listrules.html For help, send mail to the list administrators: Scott Douglas emcp...@ptcnh.net Mike Cantwell mcantw...@ieee.org For policy questions, send mail to: Jim Bacher: j.bac...@ieee.org David Heald:emc-p...@daveheald.com All emc-pstc postings are archived and searchable on the web at: http://www.ieeecommunities.org/emc-pstc
Inexpensive Sources of Useful Test Equipment
Hi All, I have just posted a new 6 minute podcast on using inexpensive test equipment from the Amateur Radio field in the development/engineering lab. Got a tight equipment budget? Some of the equipment is very useful and a very low cost. I cover four specific pieces of equipment and uses they were never intended for, but there are many more sources. The link to the podcast is: Inexpensive Sources of Useful Test Equipment (~1.4 MB, 6 min 14 sec) http://emcesd-podcast.com/2006/may/2006-0518.mp3 Can't download mp3 files? Try this link: http://emcesd-podcast.com/2006/may/2006-0518.dcs Just change the .dcs to .mp3 after download to listen to the file. If you want to see a listing of all my podcasts (22 of them now!) to to: http:emcesd-podcast.com As long at the mp3 files are not edited, you may repost them or give them to others as you see fit. 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 Product Safety Engineering Society emc-pstc discussion list.Website: http://www.ieee-pses.org/ To post a message to the list, send your e-mail to emc-p...@ieee.org Instructions: http://listserv.ieee.org/request/user-guide.html List rules: http://www.ieee-pses.org/listrules.html For help, send mail to the list administrators: Scott Douglas emcp...@ptcnh.net Mike Cantwell mcantw...@ieee.org For policy questions, send mail to: Jim Bacher: j.bac...@ieee.org David Heald:emc-p...@daveheald.com All emc-pstc postings are archived and searchable on the web at: http://www.ieeecommunities.org/emc-pstc
RE: Conducted emission measurements
This was one of the reasons we designed and built our own analogue transistors load banks. The ones available on the market are often noisy and not suitable for EMC emissions measurements. At least, that's been my experience. A resistor bank has the advantage of simplicity, but the disadvantage of lack of adjustability. A transistor load bank can be designed to be continuously variable and can present a constant-resistance, constant-current or constant-power load to the EUT. == Ralph McDiarmid, AScT Compliance Engineering Group Xantrex Technology Inc. _ From: emc-p...@ieee.org [mailto:emc-p...@ieee.org] On Behalf Of McInturff Gary Sent: Thursday, May 18, 2006 9:03 AM To: Price, Ed; emc-p...@ieee.org Subject: RE: Conducted emission measurements Agree with ED, the las time I used and electronic load it was terrible noisey in-and-of-itself. Too noisey for emissions tests. As lab equipment – at the time – it didn’t hgave any FCC emissions testing – and so I doubt it addressed this area at all. Maybe better these days but I would be skeptical until I tested a sample. Gary - This message is from the IEEE Product Safety Engineering Society emc-pstc discussion list. Website: http://www.ieee-pses.org/ To post a message to the list, send your e-mail to emc-p...@ieee.org Instructions: http://listserv.ieee.org/request/user-guide.html List rules: http://www.ieee-pses.org/listrules.html For help, send mail to the list administrators: Scott Douglas emcp...@ptcnh.net Mike Cantwell mcantw...@ieee.org For policy questions, send mail to: Jim Bacher: j.bac...@ieee.org David Heald: emc-p...@daveheald.com All emc-pstc postings are archived and searchable on the web at: http://www.ieeecommunities.org/emc-pstc
Re: Conducted emission measurements
Hi David, A couple of possibilities: - You have an increase in RF currents flowing from the power supply, through the electronic load, to it's power source (regardless whether the electronic load is grounded). Note: EN55022:1998, clause 9.2.e says that other power cords from the system (in this case, your electronic load) need to be connected to their own artificial mains network. - The volume of the electronic load is much bigger than the resistive load, and has more capacitance to the ground plane of the test setup. - Emissions testing is very sensitive to wire length and position. We normally do EMC testing with a resistive load, using wires as short as practical. A customer once reported a difference in readings when he tested our power supply with a resistive load. When I asked for a picture of the test setup, I saw his resistive load and hookup wire formed a loop about 2 feet in diameter. When I re-created his resistive load from the picture, I saw an increase in my own noise measurements of 10dB. Pat Lawler EMC Engineer Condor DC Power Supplies emc-p...@ieee.org wrote on 05/18/2006 08:08:46 AM: We measured conducted emissions of a switched mode ac-dc power supply and found that emissions are much higher when using an electronic load compared to a resistive load. Can somebody explain why this is? Thanks, David. David Gelfand, P.E. Product Integrity Engineer Mitec Telecom Inc 9000 Trans-Canada Highway Montreal QC H9R 5Z8 Canada 514 694 9000 x2262 - This message is from the IEEE Product Safety Engineering Society emc-pstc discussion list. Website: http://www.ieee-pses.org/ To post a message to the list, send your e-mail to emc-p...@ieee.org Instructions: http://listserv.ieee.org/request/user-guide.html List rules: http://www.ieee-pses.org/listrules.html For help, send mail to the list administrators: Scott Douglas emcp...@ptcnh.net Mike Cantwell mcantw...@ieee.org For policy questions, send mail to: Jim Bacher: j.bac...@ieee.org David Heald: emc-p...@daveheald.com All emc-pstc postings are archived and searchable on the web at: http://www.ieeecommunities.org/emc-pstc
RE: Conducted emission measurements
I suggest that if one is interested only in the emissions from the EUT, then a stack of resistors is the easiest way to build a suitable load. If one is interested in functional interaction between power supply and an active load (perhaps DC-DC converter) then okay, but how would you distinguish noise from the load from noise from the EUT? There are so many different types of passive and active loads which power supply could support, where would one start and finish? I think it's very similar why trying to determine how much current THD an EUT produces versus how much is produced by the voltage distortion on the electricity supply. Unless you can determine that a transistorized load bank is quiet and doesn't interact with the power supply under test, then I propose that a passive, resistive load is better when measuring conducted or radiated emissions or immunity on an inverter or a converter product. == Ralph McDiarmid, AScT Compliance Engineering Group Xantrex Technology Inc., _ Dave: I would imagine that the electronic load is itself a noise source. You are likely seeing the noise of the load, filtered and isolated by the power supply. Further, the power supply might not like the noise of the electronic load, and respond with even more power supply noise. Also, the electronic load may be providing a common mode path for power supply output noise. I generally avoid electronic loads, but it could be argued that a digital load looks a lot more realistic than a stack of non-inductive resistors. You should know what happens when your power supply is feeding real electronics as well as a passive load. Regards, Ed Price ed.pr...@cubic.com WB6WSN NARTE Certified EMC Engineer Technician Electromagnetic Compatibility Lab Cubic Defense Applications San Diego, CA USA 858-505-2780 (Voice) 858-505-1583 (Fax) Military Avionics EMC Is Our Specialty - - This message is from the IEEE Product Safety Engineering Society emc-pstc discussion list. Website: http://www.ieee-pses.org/ To post a message to the list, send your e-mail to emc-p...@ieee.org Instructions: http://listserv.ieee.org/request/user-guide.html List rules: http://www.ieee-pses.org/listrules.html For help, send mail to the list administrators: Scott Douglas emcp...@ptcnh.net Mike Cantwell mcantw...@ieee.org For policy questions, send mail to: Jim Bacher: j.bac...@ieee.org David Heald: emc-p...@daveheald.com All emc-pstc postings are archived and searchable on the web at: http://www.ieeecommunities.org/emc-pstc
Test facilities vibration shock testing in Poland
Hi group, Does anyone know of test facilities in or around Poland for vibration and shock testing of equipment with a weight of 300-500kg? Specs are ETS300019-2-2 Class 2.3 Public transportation (IEC60068-2-29 IEC60068-2-64) Best regards, Kris Carpentier Regulatory Approvals - This message is from the IEEE Product Safety Engineering Society emc-pstc discussion list.Website: http://www.ieee-pses.org/ To post a message to the list, send your e-mail to emc-p...@ieee.org Instructions: http://listserv.ieee.org/request/user-guide.html List rules: http://www.ieee-pses.org/listrules.html For help, send mail to the list administrators: Scott Douglas emcp...@ptcnh.net Mike Cantwell mcantw...@ieee.org For policy questions, send mail to: Jim Bacher: j.bac...@ieee.org David Heald:emc-p...@daveheald.com All emc-pstc postings are archived and searchable on the web at: http://www.ieeecommunities.org/emc-pstc
RE: Conducted emission measurements
Agree with ED, the las time I used and electronic load it was terrible noisey in-and-of-itself. Too noisey for emissions tests. As lab equipment – at the time – it didn’t hgave any FCC emissions testing – and so I doubt it addressed this area at all. Maybe better these days but I would be skeptical until I tested a sample. Gary _ From: emc-p...@ieee.org [mailto:emc-p...@ieee.org] On Behalf Of Price, Ed Sent: Thursday, May 18, 2006 8:36 AM To: emc-p...@ieee.org Subject: RE: Conducted emission measurements -Original Message- From: David Gelfand [mailto:david.gelf...@mitectelecom.com] Sent: Thursday, May 18, 2006 8:09 AM To: emc-p...@ieee.org Subject: Conducted emission measurements We measured conducted emissions of a switched mode ac-dc power supply and found that emissions are much higher when using an electronic load compared to a resistive load. Can somebody explain why this is? Thanks, David. David Gelfand, P.E. Product Integrity Engineer Mitec Telecom Inc 9000 Trans-Canada Highway Montreal QC H9R 5Z8 Canada 514 694 9000 x2262 Dave: I would imagine that the electronic load is itself a noise source. You are likely seeing the noise of the load, filtered and isolated by the power supply. Further, the power supply might not like the noise of the electronic load, and respond with even more power supply noise. Also, the electronic load may be providing a common mode path for power supply output noise. I generally avoid electronic loads, but it could be argued that a digital load looks a lot more realistic than a stack of non-inductive resistors. You should know what happens when your power supply is feeding real electronics as well as a passive load. Regards, Ed Price ed.pr...@cubic.com WB6WSN NARTE Certified EMC Engineer Technician Electromagnetic Compatibility Lab Cubic Defense Applications San Diego, CA USA 858-505-2780 (Voice) 858-505-1583 (Fax) Military Avionics EMC Is Our Specialty - This message is from the IEEE Product Safety Engineering Society emc-pstc discussion list. Website: http://www.ieee-pses.org/ To post a message to the list, send your e-mail to emc-p...@ieee.org Instructions: http://listserv.ieee.org/request/user-guide.html List rules: http://www.ieee-pses.org/listrules.html For help, send mail to the list administrators: Scott Douglas emcp...@ptcnh.net Mike Cantwell mcantw...@ieee.org For policy questions, send mail to: Jim Bacher: j.bac...@ieee.org David Heald: emc-p...@daveheald.com All emc-pstc postings are archived and searchable on the web at: http://www.ieeecommunities.org/emc-pstc - This message is from the IEEE Product Safety Engineering Society emc-pstc discussion list. Website: http://www.ieee-pses.org/ To post a message to the list, send your e-mail to emc-p...@ieee.org Instructions: http://listserv.ieee.org/request/user-guide.html List rules: http://www.ieee-pses.org/listrules.html For help, send mail to the list administrators: Scott Douglas emcp...@ptcnh.net Mike Cantwell mcantw...@ieee.org For policy questions, send mail to: Jim Bacher: j.bac...@ieee.org David Heald: emc-p...@daveheald.com All emc-pstc postings are archived and searchable on the web at: http://www.ieeecommunities.org/emc-pstc
RE: Conducted emission measurements
Good People, Conflict of Interest Notice: my employer makes component SMPS. The control loop for an analog load can also cause problems if the loop response time beats against a fundamental of the SMPS for that particular load setting. That is why my employer has a requirement to sweep the output load to detect any control instabilities. As for failure of the conducted emissions test, the end unit should be operated in a normal manner. That is, if the power supply has problems with conducted emissions in your box, then your box may need another power supply (and do not add significant capacitance to the output without consulting the SMPS mfr). luck, Brian -Original Message- From: emc-p...@ieee.org [mailto:emc-p...@ieee.org]On Behalf Of Ralph McDiarmid Sent: Thursday, May 18, 2006 8:24 AM To: emc-p...@ieee.org Subject: RE: Conducted emission measurements We have discovered that some commercially available electronic loads have conducted emissions of their own and these currents find there way into the device-under-test. Consider using either resistive load or an analogue controlled transistor load bank. (no switching circuits or oscillators inside). We built our own for all DVT testing including EMC. == Ralph McDiarmid, ASc Compliance Engineering Group Xantrex Technology Inc. -Original Message- From: emc-p...@ieee.org [mailto:emc-p...@ieee.org] On Behalf Of David Gelfand Sent: Thursday, May 18, 2006 8:09 AM To: emc-p...@ieee.org Subject: Conducted emission measurements We measured conducted emissions of a switched mode ac-dc power supply and found that emissions are much higher when using an electronic load compared to a resistive load. Can somebody explain why this is? Thanks, David. David Gelfand, P.E. Product Integrity Engineer Mitec Telecom Inc 9000 Trans-Canada Highway Montreal QC H9R 5Z8 Canada 514 694 9000 x2262 - This message is from the IEEE Product Safety Engineering Society emc-pstc discussion list.Website: http://www.ieee-pses.org/ To post a message to the list, send your e-mail to emc-p...@ieee.org Instructions: http://listserv.ieee.org/request/user-guide.html List rules: http://www.ieee-pses.org/listrules.html For help, send mail to the list administrators: Scott Douglas emcp...@ptcnh.net Mike Cantwell mcantw...@ieee.org For policy questions, send mail to: Jim Bacher: j.bac...@ieee.org David Heald:emc-p...@daveheald.com All emc-pstc postings are archived and searchable on the web at: http://www.ieeecommunities.org/emc-pstc
RE: Conducted emission measurements
-Original Message- From: David Gelfand [mailto:david.gelf...@mitectelecom.com] Sent: Thursday, May 18, 2006 8:09 AM To: emc-p...@ieee.org Subject: Conducted emission measurements We measured conducted emissions of a switched mode ac-dc power supply and found that emissions are much higher when using an electronic load compared to a resistive load. Can somebody explain why this is? Thanks, David. David Gelfand, P.E. Product Integrity Engineer Mitec Telecom Inc 9000 Trans-Canada Highway Montreal QC H9R 5Z8 Canada 514 694 9000 x2262 Dave: I would imagine that the electronic load is itself a noise source. You are likely seeing the noise of the load, filtered and isolated by the power supply. Further, the power supply might not like the noise of the electronic load, and respond with even more power supply noise. Also, the electronic load may be providing a common mode path for power supply output noise. I generally avoid electronic loads, but it could be argued that a digital load looks a lot more realistic than a stack of non-inductive resistors. You should know what happens when your power supply is feeding real electronics as well as a passive load. Regards, Ed Price ed.pr...@cubic.com WB6WSN NARTE Certified EMC Engineer Technician Electromagnetic Compatibility Lab Cubic Defense Applications San Diego, CA USA 858-505-2780 (Voice) 858-505-1583 (Fax) Military Avionics EMC Is Our Specialty - This message is from the IEEE Product Safety Engineering Society emc-pstc discussion list. Website: http://www.ieee-pses.org/ To post a message to the list, send your e-mail to emc-p...@ieee.org Instructions: http://listserv.ieee.org/request/user-guide.html List rules: http://www.ieee-pses.org/listrules.html For help, send mail to the list administrators: Scott Douglas emcp...@ptcnh.net Mike Cantwell mcantw...@ieee.org For policy questions, send mail to: Jim Bacher: j.bac...@ieee.org David Heald: emc-p...@daveheald.com All emc-pstc postings are archived and searchable on the web at: http://www.ieeecommunities.org/emc-pstc
RE: Conducted emission measurements
We have discovered that some commercially available electronic loads have conducted emissions of their own and these currents find there way into the device-under-test. Consider using either resistive load or an analogue controlled transistor load bank. (no switching circuits or oscillators inside). We built our own for all DVT testing including EMC. == Ralph McDiarmid, ASc Compliance Engineering Group Xantrex Technology Inc. From: emc-p...@ieee.org [mailto:emc-p...@ieee.org] On Behalf Of David Gelfand Sent: Thursday, May 18, 2006 8:09 AM To: emc-p...@ieee.org Subject: Conducted emission measurements We measured conducted emissions of a switched mode ac-dc power supply and found that emissions are much higher when using an electronic load compared to a resistive load. Can somebody explain why this is? Thanks, David. David Gelfand, P.E. Product Integrity Engineer Mitec Telecom Inc 9000 Trans-Canada Highway Montreal QC H9R 5Z8 Canada 514 694 9000 x2262 - This message is from the IEEE Product Safety Engineering Society emc-pstc discussion list.Website: http://www.ieee-pses.org/ To post a message to the list, send your e-mail to emc-p...@ieee.org Instructions: http://listserv.ieee.org/request/user-guide.html List rules: http://www.ieee-pses.org/listrules.html For help, send mail to the list administrators: Scott Douglas emcp...@ptcnh.net Mike Cantwell mcantw...@ieee.org For policy questions, send mail to: Jim Bacher: j.bac...@ieee.org David Heald:emc-p...@daveheald.com All emc-pstc postings are archived and searchable on the web at: http://www.ieeecommunities.org/emc-pstc - This message is from the IEEE Product Safety Engineering Society emc-pstc discussion list.Website: http://www.ieee-pses.org/ To post a message to the list, send your e-mail to emc-p...@ieee.org Instructions: http://listserv.ieee.org/request/user-guide.html List rules: http://www.ieee-pses.org/listrules.html For help, send mail to the list administrators: Scott Douglas emcp...@ptcnh.net Mike Cantwell mcantw...@ieee.org For policy questions, send mail to: Jim Bacher: j.bac...@ieee.org David Heald:emc-p...@daveheald.com All emc-pstc postings are archived and searchable on the web at: http://www.ieeecommunities.org/emc-pstc
Conducted emission measurements
We measured conducted emissions of a switched mode ac-dc power supply and found that emissions are much higher when using an electronic load compared to a resistive load. Can somebody explain why this is? Thanks, David. David Gelfand, P.E. Product Integrity Engineer Mitec Telecom Inc 9000 Trans-Canada Highway Montreal QC H9R 5Z8 Canada 514 694 9000 x2262 - This message is from the IEEE Product Safety Engineering Society emc-pstc discussion list.Website: http://www.ieee-pses.org/ To post a message to the list, send your e-mail to emc-p...@ieee.org Instructions: http://listserv.ieee.org/request/user-guide.html List rules: http://www.ieee-pses.org/listrules.html For help, send mail to the list administrators: Scott Douglas emcp...@ptcnh.net Mike Cantwell mcantw...@ieee.org For policy questions, send mail to: Jim Bacher: j.bac...@ieee.org David Heald:emc-p...@daveheald.com All emc-pstc postings are archived and searchable on the web at: http://www.ieeecommunities.org/emc-pstc
RE: Burst and surge tests
Ian, I know of one PS manufacturer who states that their power supplies complies only with Criterion B during EFT en Surges although the output voltage remains within the limits of the normal operating conditions (Ex. 9V +/-5%). The reason for this is that there may be very small pulses, nsec or usec, of Common mode or Differential mode, that may still appear at the output and are out of the declared normal operating conditions. Best regards, Kris Carpentier Regulatory Approvals From: emc-p...@ieee.org [mailto:emc-p...@ieee.org] On Behalf Of iun...@servomex.com Sent: donderdag 18 mei 2006 15:47 To: emc-p...@ieee.org Subject: Burst and surge tests Dear Group, I have a question regarding the likely behaviour of ac to dc switch mode power supplies during fast transient burst tests to EN 61000-4-4 and surge tests to EN 61000-4-5. For a manufacturer to claim conformity to these standards are any constraints placed on the behaviour of the dc output voltage during the tests? I am particularly interested in the likely change in DC voltage output as the appropriate burst/surges are applied to the ac input. Many thanks in anticipation of your replies. Best regards Ian Unwin Lead Engineer Servomex Group Limited * *Register now at www.servomex.com/zap.html * *for an opportunity to win a great prize* *in our monthly draw. * * This email has been scanned for all viruses by the MessageLabs SkyScan service. This electronic message contains information from Servomex which may be privileged or confidential. The information is intended to be for the use of the individual(s) or entity named above. If you are not the intended recipient be aware that any disclosure, copying, distribution or use of the contents of this information is prohibited. If you have received this electronic message in error, please notify us immediately. Activity and use of the Servomex E-mail system is monitored to secure its effective operation and for other lawful business purposes. - This message is from the IEEE Product Safety Engineering Society emc-pstc discussion list.Website: http://www.ieee-pses.org/ To post a message to the list, send your e-mail to emc-p...@ieee.org Instructions: http://listserv.ieee.org/request/user-guide.html List rules: http://www.ieee-pses.org/listrules.html For help, send mail to the list administrators: Scott Douglas emcp...@ptcnh.net Mike Cantwell mcantw...@ieee.org For policy questions, send mail to: Jim Bacher: j.bac...@ieee.org David Heald:emc-p...@daveheald.com All emc-pstc postings are archived and searchable on the web at: http://www.ieeecommunities.org/emc-pstc - This message is from the IEEE Product Safety Engineering Society emc-pstc discussion list.Website: http://www.ieee-pses.org/ To post a message to the list, send your e-mail to emc-p...@ieee.org Instructions: http://listserv.ieee.org/request/user-guide.html List rules: http://www.ieee-pses.org/listrules.html For help, send mail to the list administrators: Scott Douglas emcp...@ptcnh.net Mike Cantwell mcantw...@ieee.org For policy questions, send mail to: Jim Bacher: j.bac...@ieee.org David Heald:emc-p...@daveheald.com All emc-pstc postings are archived and searchable on the web at: http://www.ieeecommunities.org/emc-pstc
Re: Burst and surge tests
It seems to me that you would not care if only some small fraction of the surge potential coupled from primary to secondary for a short period of time especially if it is common mode, but that what you don't want to have happen is a differential dc level shift. Therefore I would mount the power supply so that its primary power input was in my test chamber, but the dc output was in my control room, and the penetration was either shielded or filtered or both. The filtering would not be dc-to-light. it would be what was necessary to knock down a 50 or 100 Ohm source impedance signal to negligible levels, because that would represent the radiation coupling around the supply. And the filter time constant would be on the order of the surge duration (small feedthrough cap penetrations). Anything I see differentially after that can betaken to be the power supply behavior under stress. From: brian_ku...@leco.com Date: Thu, 18 May 2006 10:03:03 -0400 To: iun...@servomex.com, emc-p...@ieee.org Subject: Re:Burst and surge tests Ian, This is a very good question. Not that long ago we were qualifying a power supply that would shut down and restart each time it saw the Surge pulse during the 4-5 test. We told the PSU manufacturer that their product fails Surge but they came back and told us that, according to the standard, as long as the power supply returned to normal operation when the test was complete, it passes. As anyone would know, the immunity tests are system tests and if the power supply shut down causing your electronics to reset and causing a loss of data then the system would FAIL. So, we have specified that the output of power supplies must not cause our electronics to malfunction during the 4-4 or 4-5 tests. We specify that the DC output of a power supply can not go out of spec during these tests. It is very hard to verify this because the transients caused during the test will couple into the measuring device, such as a scope or meter. If someone has a good method to test this I would be very interested in hearing how. If you filter out the transients then you maybe blinding yourself to what's really happening on the dc output. Brian Reply Separator Subject:Burst and surge tests Author: iun...@servomex.com Date: 5/18/2006 9:46 AM Dear Group, I have a question regarding the likely behaviour of ac to dc switch mode power supplies during fast transient burst tests to EN 61000-4-4 and surge tests to EN 61000-4-5. For a manufacturer to claim conformity to these standards are any constraints placed on the behaviour of the dc output voltage during the tests? I am particularly interested in the likely change in DC voltage output as the appropriate burst/surges are applied to the ac input. Many thanks in anticipation of your replies. Best regards Ian Unwin Lead Engineer Servomex Group Limited * *Register now at www.servomex.com/zap.html * *for an opportunity to win a great prize* *in our monthly draw. * * This email has been scanned for all viruses by the MessageLabs SkyScan service. This electronic message contains information from Servomex which may be privileged or confidential. The information is intended to be for the use of the individual(s) or entity named above. If you are not the intended recipient be aware that any disclosure, copying, distribution or use of the contents of this information is prohibited. If you have received this electronic message in error, please notify us immediately. Activity and use of the Servomex E-mail system is monitored to secure its effective operation and for other lawful business purposes. - This message is from the IEEE Product Safety Engineering Society emc-pstc discussion list.Website: http://www.ieee-pses.org/ To post a message to the list, send your e-mail to emc-p...@ieee.org Instructions: http://listserv.ieee.org/request/user-guide.html List rules: http://www.ieee-pses.org/listrules.html For help, send mail to the list administrators: Scott Douglas emcp...@ptcnh.net Mike Cantwell mcantw...@ieee.org For policy questions, send mail to: Jim Bacher: j.bac...@ieee.org David Heald:emc-p...@daveheald.com All emc-pstc postings are archived and searchable on the web at: http://www.ieeecommunities.org/emc-pstc - This message is from the IEEE Product Safety Engineering Society emc-pstc discussion list.Website: http://www.ieee-pses.org/ To post a message to the list, send your e-mail to emc-p...@ieee.org Instructions:
Re: Burst and surge tests
In message tfsre...@leco.com, dated Thu, 18 May 2006, brian_ku...@leco.com writes So, we have specified that the output of power supplies must not cause our electronics to malfunction during the 4-4 or 4-5 tests. We specify that the DC output of a power supply can not go out of spec during these tests. Effectively, you are applying Criterion A instead of B, and indeed that's usually very difficult to do. That's why Criterion B exists. But there may be no other solution if you buy-in the power supply, unless you can co-operate with the supplier to agree a less stringent requirement that does not result in your own electronics being compromised. -- OOO - Own Opinions Only. Try www.jmwa.demon.co.uk and www.isce.org.uk 2006 is YMMVI- Your mileage may vary immensely. John Woodgate, J M Woodgate and Associates, Rayleigh, Essex UK - This message is from the IEEE Product Safety Engineering Society emc-pstc discussion list.Website: http://www.ieee-pses.org/ To post a message to the list, send your e-mail to emc-p...@ieee.org Instructions: http://listserv.ieee.org/request/user-guide.html List rules: http://www.ieee-pses.org/listrules.html For help, send mail to the list administrators: Scott Douglas emcp...@ptcnh.net Mike Cantwell mcantw...@ieee.org For policy questions, send mail to: Jim Bacher: j.bac...@ieee.org David Heald:emc-p...@daveheald.com All emc-pstc postings are archived and searchable on the web at: http://www.ieeecommunities.org/emc-pstc
RE: Burst and surge tests
Return Receipt Your RE: Burst and surge tests document : was Gunter J Maass/BR/Embraco received by: at: 05/18/2006 11:28:36 AM - This message is from the IEEE Product Safety Engineering Society emc-pstc discussion list.Website: http://www.ieee-pses.org/ To post a message to the list, send your e-mail to emc-p...@ieee.org Instructions: http://listserv.ieee.org/request/user-guide.html List rules: http://www.ieee-pses.org/listrules.html For help, send mail to the list administrators: Scott Douglas emcp...@ptcnh.net Mike Cantwell mcantw...@ieee.org For policy questions, send mail to: Jim Bacher: j.bac...@ieee.org David Heald:emc-p...@daveheald.com All emc-pstc postings are archived and searchable on the web at: http://www.ieeecommunities.org/emc-pstc
RE: Burst and surge tests
Return Receipt Your document: RE: Burst and surge tests was received by: Jan Vercammen/AMEMV/AGFA at: 2006-05-18 16:21:53 - This message is from the IEEE Product Safety Engineering Society emc-pstc discussion list. Website: http://www.ieee-pses.org/ To post a message to the list, send your e-mail to emc-p...@ieee.org Instructions: http://listserv.ieee.org/request/user-guide.html List rules: http://www.ieee-pses.org/listrules.html For help, send mail to the list administrators: Scott Douglas emcp...@ptcnh.net Mike Cantwell mcantw...@ieee.org For policy questions, send mail to: Jim Bacher: j.bac...@ieee.org David Heald: emc-p...@daveheald.com All emc-pstc postings are archived and searchable on the web at: http://www.ieeecommunities.org/emc-pstc
RE: Burst and surge tests
Return Receipt Your RE: Burst and surge tests document: wasGreg McClure/Lex/Lexmark received by: at:05/18/2006 10:15:47 - This message is from the IEEE Product Safety Engineering Society emc-pstc discussion list.Website: http://www.ieee-pses.org/ To post a message to the list, send your e-mail to emc-p...@ieee.org Instructions: http://listserv.ieee.org/request/user-guide.html List rules: http://www.ieee-pses.org/listrules.html For help, send mail to the list administrators: Scott Douglas emcp...@ptcnh.net Mike Cantwell mcantw...@ieee.org For policy questions, send mail to: Jim Bacher: j.bac...@ieee.org David Heald:emc-p...@daveheald.com All emc-pstc postings are archived and searchable on the web at: http://www.ieeecommunities.org/emc-pstc
RE: Burst and surge tests
Return Receipt Your RE: Burst and surge tests document: was received John Radomski/Aut/Schneider by: at: 05/18/2006 10:13:58 - This message is from the IEEE Product Safety Engineering Society emc-pstc discussion list.Website: http://www.ieee-pses.org/ To post a message to the list, send your e-mail to emc-p...@ieee.org Instructions: http://listserv.ieee.org/request/user-guide.html List rules: http://www.ieee-pses.org/listrules.html For help, send mail to the list administrators: Scott Douglas emcp...@ptcnh.net Mike Cantwell mcantw...@ieee.org For policy questions, send mail to: Jim Bacher: j.bac...@ieee.org David Heald:emc-p...@daveheald.com All emc-pstc postings are archived and searchable on the web at: http://www.ieeecommunities.org/emc-pstc
Re: Burst and surge tests
In message ofae34d781.9bc07564-on80257172.004a953d-80257172.004bb...@servomex.com, dated Thu, 18 May 2006, iun...@servomex.com writes I have a question regarding the likely behaviour of ac to dc switch mode power supplies during fast transient burst tests to EN 61000-4-4 and surge tests to EN 61000-4-5. For a manufacturer to claim conformity to these standards are any constraints placed on the behaviour of the dc output voltage during the tests? I am particularly interested in the likely change in DC voltage output as the appropriate burst/surges are applied to the ac input. No explicit requirements. But Criterion B really covers the possibility that the 5 V line goes up to 120 V! The product must work AFTER the test. -- OOO - Own Opinions Only. Try www.jmwa.demon.co.uk and www.isce.org.uk 2006 is YMMVI- Your mileage may vary immensely. John Woodgate, J M Woodgate and Associates, Rayleigh, Essex UK - This message is from the IEEE Product Safety Engineering Society emc-pstc discussion list.Website: http://www.ieee-pses.org/ To post a message to the list, send your e-mail to emc-p...@ieee.org Instructions: http://listserv.ieee.org/request/user-guide.html List rules: http://www.ieee-pses.org/listrules.html For help, send mail to the list administrators: Scott Douglas emcp...@ptcnh.net Mike Cantwell mcantw...@ieee.org For policy questions, send mail to: Jim Bacher: j.bac...@ieee.org David Heald:emc-p...@daveheald.com All emc-pstc postings are archived and searchable on the web at: http://www.ieeecommunities.org/emc-pstc
Re:Burst and surge tests
Ian, This is a very good question. Not that long ago we were qualifying a power supply that would shut down and restart each time it saw the Surge pulse during the 4-5 test. We told the PSU manufacturer that their product fails Surge but they came back and told us that, according to the standard, as long as the power supply returned to normal operation when the test was complete, it passes. As anyone would know, the immunity tests are system tests and if the power supply shut down causing your electronics to reset and causing a loss of data then the system would FAIL. So, we have specified that the output of power supplies must not cause our electronics to malfunction during the 4-4 or 4-5 tests. We specify that the DC output of a power supply can not go out of spec during these tests. It is very hard to verify this because the transients caused during the test will couple into the measuring device, such as a scope or meter. If someone has a good method to test this I would be very interested in hearing how. If you filter out the transients then you maybe blinding yourself to what's really happening on the dc output. Brian Reply Separator Subject:Burst and surge tests Author: iun...@servomex.com List-Post: emc-pstc@listserv.ieee.org Date: 5/18/2006 9:46 AM Dear Group, I have a question regarding the likely behaviour of ac to dc switch mode power supplies during fast transient burst tests to EN 61000-4-4 and surge tests to EN 61000-4-5. For a manufacturer to claim conformity to these standards are any constraints placed on the behaviour of the dc output voltage during the tests? I am particularly interested in the likely change in DC voltage output as the appropriate burst/surges are applied to the ac input. Many thanks in anticipation of your replies. Best regards Ian Unwin Lead Engineer Servomex Group Limited * *Register now at www.servomex.com/zap.html * *for an opportunity to win a great prize* *in our monthly draw. * * This email has been scanned for all viruses by the MessageLabs SkyScan service. This electronic message contains information from Servomex which may be privileged or confidential. The information is intended to be for the use of the individual(s) or entity named above. If you are not the intended recipient be aware that any disclosure, copying, distribution or use of the contents of this information is prohibited. If you have received this electronic message in error, please notify us immediately. Activity and use of the Servomex E-mail system is monitored to secure its effective operation and for other lawful business purposes. - This message is from the IEEE Product Safety Engineering Society emc-pstc discussion list.Website: http://www.ieee-pses.org/ To post a message to the list, send your e-mail to emc-p...@ieee.org Instructions: http://listserv.ieee.org/request/user-guide.html List rules: http://www.ieee-pses.org/listrules.html For help, send mail to the list administrators: Scott Douglas emcp...@ptcnh.net Mike Cantwell mcantw...@ieee.org For policy questions, send mail to: Jim Bacher: j.bac...@ieee.org David Heald:emc-p...@daveheald.com All emc-pstc postings are archived and searchable on the web at: http://www.ieeecommunities.org/emc-pstc - This message is from the IEEE Product Safety Engineering Society emc-pstc discussion list.Website: http://www.ieee-pses.org/ To post a message to the list, send your e-mail to emc-p...@ieee.org Instructions: http://listserv.ieee.org/request/user-guide.html List rules: http://www.ieee-pses.org/listrules.html For help, send mail to the list administrators: Scott Douglas emcp...@ptcnh.net Mike Cantwell mcantw...@ieee.org For policy questions, send mail to: Jim Bacher: j.bac...@ieee.org David Heald:emc-p...@daveheald.com All emc-pstc postings are archived and searchable on the web at: http://www.ieeecommunities.org/emc-pstc
RE: Burst and surge tests
Ian, I would expect a power supply to function according to its specifications. This means that all output voltages have to stay within the specified tolerance limits. Best regards, Michael Michael Nagel Senior EMC Engineer Motorola GmbH ECC Embedded Communications Computing Lilienthalstrasse 15 85579 Neubiberg/Muenchen - Germany Ph: +49-89-9608-0 Fax: +49-89-9608-2376 e-mail: michael.na...@motorola.com info: http://www.motorola.com/computers From: emc-p...@ieee.org [mailto:emc-p...@ieee.org] On Behalf Of iun...@servomex.com Sent: Thursday, May 18, 2006 3:47 PM To: emc-p...@ieee.org Subject: Burst and surge tests Dear Group, I have a question regarding the likely behaviour of ac to dc switch mode power supplies during fast transient burst tests to EN 61000-4-4 and surge tests to EN 61000-4-5. For a manufacturer to claim conformity to these standards are any constraints placed on the behaviour of the dc output voltage during the tests? I am particularly interested in the likely change in DC voltage output as the appropriate burst/surges are applied to the ac input. Many thanks in anticipation of your replies. Best regards Ian Unwin Lead Engineer Servomex Group Limited * *Register now at www.servomex.com/zap.html * *for an opportunity to win a great prize* *in our monthly draw. * * This email has been scanned for all viruses by the MessageLabs SkyScan service. This electronic message contains information from Servomex which may be privileged or confidential. The information is intended to be for the use of the individual(s) or entity named above. If you are not the intended recipient be aware that any disclosure, copying, distribution or use of the contents of this information is prohibited. If you have received this electronic message in error, please notify us immediately. Activity and use of the Servomex E-mail system is monitored to secure its effective operation and for other lawful business purposes. - This message is from the IEEE Product Safety Engineering Society emc-pstc discussion list.Website: http://www.ieee-pses.org/ To post a message to the list, send your e-mail to emc-p...@ieee.org Instructions: http://listserv.ieee.org/request/user-guide.html List rules: http://www.ieee-pses.org/listrules.html For help, send mail to the list administrators: Scott Douglas emcp...@ptcnh.net Mike Cantwell mcantw...@ieee.org For policy questions, send mail to: Jim Bacher: j.bac...@ieee.org David Heald:emc-p...@daveheald.com All emc-pstc postings are archived and searchable on the web at: http://www.ieeecommunities.org/emc-pstc - This message is from the IEEE Product Safety Engineering Society emc-pstc discussion list.Website: http://www.ieee-pses.org/ To post a message to the list, send your e-mail to emc-p...@ieee.org Instructions: http://listserv.ieee.org/request/user-guide.html List rules: http://www.ieee-pses.org/listrules.html For help, send mail to the list administrators: Scott Douglas emcp...@ptcnh.net Mike Cantwell mcantw...@ieee.org For policy questions, send mail to: Jim Bacher: j.bac...@ieee.org David Heald:emc-p...@daveheald.com All emc-pstc postings are archived and searchable on the web at: http://www.ieeecommunities.org/emc-pstc
Burst and surge tests
Dear Group, I have a question regarding the likely behaviour of ac to dc switch mode power supplies during fast transient burst tests to EN 61000-4-4 and surge tests to EN 61000-4-5. For a manufacturer to claim conformity to these standards are any constraints placed on the behaviour of the dc output voltage during the tests? I am particularly interested in the likely change in DC voltage output as the appropriate burst/surges are applied to the ac input. Many thanks in anticipation of your replies. Best regards Ian Unwin Lead Engineer Servomex Group Limited * *Register now at www.servomex.com/zap.html * *for an opportunity to win a great prize* *in our monthly draw. * * This email has been scanned for all viruses by the MessageLabs SkyScan service. This electronic message contains information from Servomex which may be privileged or confidential. The information is intended to be for the use of the individual(s) or entity named above. If you are not the intended recipient be aware that any disclosure, copying, distribution or use of the contents of this information is prohibited. If you have received this electronic message in error, please notify us immediately. Activity and use of the Servomex E-mail system is monitored to secure its effective operation and for other lawful business purposes. - This message is from the IEEE Product Safety Engineering Society emc-pstc discussion list.Website: http://www.ieee-pses.org/ To post a message to the list, send your e-mail to emc-p...@ieee.org Instructions: http://listserv.ieee.org/request/user-guide.html List rules: http://www.ieee-pses.org/listrules.html For help, send mail to the list administrators: Scott Douglas emcp...@ptcnh.net Mike Cantwell mcantw...@ieee.org For policy questions, send mail to: Jim Bacher: j.bac...@ieee.org David Heald:emc-p...@daveheald.com All emc-pstc postings are archived and searchable on the web at: http://www.ieeecommunities.org/emc-pstc
RE: Sign Regulations
Hi Folks You can find information on The Harmonized Commodity Description and Coding System (HS) of the Customs Cooperation Council (CCC) on a number of websites. For example:http://www.uktradeinfo.com/index.cfm?task=intraicn is the relevant part of the UK Customs and Excise Site. Not an easy job to do, and some countries (e.g. the PRC) use extended versions of the code to more clearly define the categories (which are used for the lists of products requiring CCC in China). Regards John Allen From: emc-p...@ieee.org [mailto:emc-p...@ieee.org] On Behalf Of Leber Jody-G19980 Sent: 18 May 2006 12:32 To: peter merguerian; emc-p...@ieee.org Subject: RE: Sign Regulations Peter, I would guess 940560. I am not really familiar with the codes you refer to. Jody _ From: peter merguerian [mailto:pmerguerian2...@yahoo.com] Sent: Thursday, May 18, 2006 3:16 AM To: Leber Jody-G19980; emc-p...@ieee.org Subject: Re: Sign Regulations Jody, Do you have the Harmonized Tariff (HS or HTS) code? Some countries on your list reference standards by the HS code. Peter Leber Jody-G19980 jody.le...@motorola.com wrote: Ladies and Gentlemen, We are trying to obtain regulatory approvals on a sign for retail display. It consists of a 60950-1 LPS supply which powers an inverter that drives an electroluminescent display. We currently know that UL 48 (Signs) and FCC part 15 apply. We are trying to determine the most appropriate safety and EMC requirements for the following areas: Canada USA Mexico Brazil Argentina UK Portugal Spain France Germany Austria Russia India Malaysia China Australia Any recommendations would be appreciated. Best Regards, Jody Leber Senior Regulatory Engineer jody.le...@motorola.com http://www.motorola.com/producttesting blocked::http://www.motorola.com/producttesting Motorola Product Testing Services 1700 Belle Meade Court Lawrenceville, GA 30043 770.338.3581 P 404.387.1224 C 847.761.3145 F - This message is from the IEEE Product Safety Engineering Society emc-pstc discussion list. Website: http://www.ieee-pses.org/ To post a message to the list, send your e-mail to emc-p...@ieee.org Instructions: http://listserv.ieee.org/request/user-guide.html List rules: http://www.ieee-pses.org/listrules.html For help, send mail to the list administrators: Scott Douglas emcp...@ptcnh.net Mike Cantwell mcantw...@ieee.org For policy questions, send mail to: Jim Bacher: j.bac...@ieee.org David Heald: emc-p...@daveheald.com All emc-pstc postings are archived and searchable on the web at: http://www.ieeecommunities.org/emc-pstc _ How low will we go? Check out Yahoo! Messenger’s low PC-to-Phone http://us.rd.yahoo.com/mail_us/tagline /postman8/*http://us.rd.yahoo.com/evt=39663/*http://voice.yahoo.com call rates. - This message is from the IEEE Product Safety Engineering Society emc-pstc discussion list. Website: http://www.ieee-pses.org/ To post a message to the list, send your e-mail to emc-p...@ieee.org Instructions: http://listserv.ieee.org/request/user-guide.html List rules: http://www.ieee-pses.org/listrules.html For help, send mail to the list administrators: Scott Douglas emcp...@ptcnh.net Mike Cantwell mcantw...@ieee.org For policy questions, send mail to: Jim Bacher: j.bac...@ieee.org David Heald: emc-p...@daveheald.com All emc-pstc postings are archived and searchable on the web at: http://www.ieeecommunities.org/emc-pstc -- No virus found in this incoming message. Checked by AVG Free Edition. Version: 7.1.392 / Virus Database: 268.6.0/342 - Release Date: 17/05/06 -- No virus found in this outgoing message. Checked by AVG Free Edition. Version: 7.1.392 / Virus Database: 268.6.0/342 - Release Date: 17/05/06 - This message is from the IEEE Product Safety Engineering Society emc-pstc discussion list. Website: http://www.ieee-pses.org/ To post a message to the list, send your e-mail to emc-p...@ieee.org Instructions: http://listserv.ieee.org/request/user-guide.html List rules: http://www.ieee-pses.org/listrules.html For help, send mail to the list administrators: Scott Douglas emcp...@ptcnh.net Mike Cantwell mcantw...@ieee.org For policy questions, send mail to: Jim Bacher: j.bac...@ieee.org David Heald: emc-p...@daveheald.com All emc-pstc postings are archived and searchable on the web at: http://www.ieeecommunities.org/emc-pstc
RE: Sign Regulations
Peter, I would guess 940560. I am not really familiar with the codes you refer to. Jody _ From: peter merguerian [mailto:pmerguerian2...@yahoo.com] Sent: Thursday, May 18, 2006 3:16 AM To: Leber Jody-G19980; emc-p...@ieee.org Subject: Re: Sign Regulations Jody, Do you have the Harmonized Tariff (HS or HTS) code? Some countries on your list reference standards by the HS code. Peter Leber Jody-G19980 jody.le...@motorola.com wrote: Ladies and Gentlemen, We are trying to obtain regulatory approvals on a sign for retail display. It consists of a 60950-1 LPS supply which powers an inverter that drives an electroluminescent display. We currently know that UL 48 (Signs) and FCC part 15 apply. We are trying to determine the most appropriate safety and EMC requirements for the following areas: Canada USA Mexico Brazil Argentina UK Portugal Spain France Germany Austria Russia India Malaysia China Australia Any recommendations would be appreciated. Best Regards, Jody Leber Senior Regulatory Engineer jody.le...@motorola.com http://www.motorola.com/producttesting blocked::http://www.motorola.com/producttesting Motorola Product Testing Services 1700 Belle Meade Court Lawrenceville, GA 30043 770.338.3581 P 404.387.1224 C 847.761.3145 F - This message is from the IEEE Product Safety Engineering Society emc-pstc discussion list. Website: http://www.ieee-pses.org/ To post a message to the list, send your e-mail to emc-p...@ieee.org Instructions: http://listserv.ieee.org/request/user-guide.html List rules: http://www.ieee-pses.org/listrules.html For help, send mail to the list administrators: Scott Douglas emcp...@ptcnh.net Mike Cantwell mcantw...@ieee.org For policy questions, send mail to: Jim Bacher: j.bac...@ieee.org David Heald: emc-p...@daveheald.com All emc-pstc postings are archived and searchable on the web at: http://www.ieeecommunities.org/emc-pstc _ How low will we go? Check out Yahoo! Messenger’s low PC-to-Phone http://us.rd.yahoo.com/mail_us/tagline /postman8/*http://us.rd.yahoo.com/evt=39663/*http://voice.yahoo.com call rates. - This message is from the IEEE Product Safety Engineering Society emc-pstc discussion list. Website: http://www.ieee-pses.org/ To post a message to the list, send your e-mail to emc-p...@ieee.org Instructions: http://listserv.ieee.org/request/user-guide.html List rules: http://www.ieee-pses.org/listrules.html For help, send mail to the list administrators: Scott Douglas emcp...@ptcnh.net Mike Cantwell mcantw...@ieee.org For policy questions, send mail to: Jim Bacher: j.bac...@ieee.org David Heald: emc-p...@daveheald.com All emc-pstc postings are archived and searchable on the web at: http://www.ieeecommunities.org/emc-pstc
Re: Sign Regulations
Jody, Do you have the Harmonized Tariff (HS or HTS) code? Some countries on your list reference standards by the HS code. Peter Leber Jody-G19980 jody.le...@motorola.com wrote: Ladies and Gentlemen, We are trying to obtain regulatory approvals on a sign for retail display. It consists of a 60950-1 LPS supply which powers an inverter that drives an electroluminescent display. We currently know that UL 48 (Signs) and FCC part 15 apply. We are trying to determine the most appropriate safety and EMC requirements for the following areas: Canada USA Mexico Brazil Argentina UK Portugal Spain France Germany Austria Russia India Malaysia China Australia Any recommendations would be appreciated. Best Regards, Jody Leber Senior Regulatory Engineer jody.le...@motorola.com http://www.motorola.com/producttesting blocked::http://www.motorola.com/producttesting Motorola Product Testing Services 1700 Belle Meade Court Lawrenceville, GA 30043 770.338.3581 P 404.387.1224 C 847.761.3145 F - This message is from the IEEE Product Safety Engineering Society emc-pstc discussion list. Website: http://www.ieee-pses.org/ To post a message to the list, send your e-mail to emc-p...@ieee.org Instructions: http://listserv.ieee.org/request/user-guide.html List rules: http://www.ieee-pses.org/listrules.html For help, send mail to the list administrators: Scott Douglas emcp...@ptcnh.net Mike Cantwell mcantw...@ieee.org For policy questions, send mail to: Jim Bacher: j.bac...@ieee.org David Heald: emc-p...@daveheald.com All emc-pstc postings are archived and searchable on the web at: http://www.ieeecommunities.org/emc-pstc _ How low will we go? Check out Yahoo! Messenger’s low http://us.rd.yahoo.com/mail_us/tagline /postman8/*http://us.rd.yahoo.com/evt=39663/*http://voice.yahoo.com PC-to-Phone call rates. - - -- This message is from the IEEE Product Safety Engineering Society emc-pstc discussion list. Website: http://www.ieee-pses.org/ To post a message to the list, send your e-mail to emc-p...@ieee.org Instructions: http://listserv.ieee.org/request/user-guide.html List rules: http://www.ieee-pses.org/listrules.html For help, send mail to the list administrators: Scott Douglas emcp...@ptcnh.net Mike Cantwell mcantw...@ieee.org For policy questions, send mail to: Jim Bacher: j.bac...@ieee.org David Heald: emc-p...@daveheald.com All emc-pstc postings are archived and searchable on the web at: http://www.ieeecommunities.org/emc-pstc
