NEBS compliance for 100baseT / 1000base T
Hello Gurus, I am new to this list so pardon me if my questions sound naive. The question I had was, for nebs compliance we need to pass power cross and lightening tests. For boards with copper ports (100baseT and 100base T), is it possible to use rj45 connectors with integrated magnetics and still get pass these tests. Has anybody done that - if yes, is it possible to share the method. I believe there are components (e.g. sedactors) one can use, but those are capacitve and might impact the signal integrity. Also, mostly that kind of stuff is used on the line side of the transformer. I am just a little bit hesistant to put in on the secondary side... Any input would be highly appreciated... Thanks Muhammad
Airport Security Immunity Question ...
1. Anyone know the frequencies and levels (E or H) used in airport security for scanning baggage? 2. Anyone have any field reports of anything failing as a result of being scanned or wanded in airport security? 3. Has anyone had to adjust immunity testing to some other level or criteria as a result of airport security they may care to relate in a general way? Regards, 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: Ron Pickard: emc-p...@hypercom.com Dave Heald: davehe...@attbi.com For policy questions, send mail to: Richard Nute: ri...@ieee.org Jim Bacher: j.bac...@ieee.org All emc-pstc postings are archived and searchable on the web at: http://ieeepstc.mindcruiser.com/ Click on browse and then emc-pstc mailing list
RE: Nema 5-15R sockets
Wow - so it is, and I now have my free copy! Thanks, Jim Eichner, P.Eng. Manager, Engineering Services Xantrex Technology Inc. Mobile Power phone: (604) 422-2546 fax: (604) 420-1591 e-mail: jim.eich...@xantrex.com web: www.xantrex.com Confidentiality Notice: This email message, including any attachments, is for the sole use of the intended recipient(s) and may contain confidential and privileged information. Any unauthorized review, use, disclosure or distribution is prohibited. If you are not the intended recipient, please contact the sender by reply e-mail and destroy all copies of the original message. -Original Message- From: Robert Johnson [mailto:john...@itesafety.com] Sent: Monday, July 22, 2002 9:41 AM To: emc-p...@majordomo.ieee.org Subject: RE: Nema 5-15R sockets In fact, soft copy of NEMA WD-6 from www.nema.org is free!! If only IEC ... Bob Johnson ITE Safety -Original Message- From: owner-emc-p...@majordomo.ieee.org [mailto:owner-emc-p...@majordomo.ieee.org] On Behalf Of ron_well...@agilent.com Sent: Monday, July 22, 2002 9:02 AM To: jim.eich...@xantrex.com; emc-p...@majordomo.ieee.org Subject: RE: Nema 5-15R sockets Hello Jim, By now you have received many replies to your message. However, since your orientation question has been asked many, many times before in my neck of the woods, here is what I know regarding your two questions: 1) Not specified in the NEC or the CEC. However, receptacle orientation is usually determined by either: a) the electrician who installs the receptacle, by their preference, or b) a localized code or practice. In some cases, various hospitals have their own requirements for receptacle installation. 2) Get a copy of NEMA WD-6. It's available electronically (www.nema.org) and doesn't cost big bucks. Besides, it's a good reference to have for all North American plug and receptacle configurations. Regards, +=+ |Ronald R. Wellman|Voice : 408-345-8229 | |Agilent Technologies |FAX : 408-553-2412 | |5301 Stevens Creek Blvd.,|E-Mail: ron_well...@agilent.com| |Mailstop 54L-BB |WWW : http://www.agilent.com | |Santa Clara, California 95052 USA| | +=+ --- This message is from the IEEE EMC Society Product Safety Technical Committee emc-pstc discussion list. Visit our web site at: http://www.ewh.ieee.org/soc/emcs/pstc/ To cancel your subscription, send mail to: majord...@ieee.org with the single line: unsubscribe emc-pstc For help, send mail to the list administrators: Ron Pickard: emc-p...@hypercom.com Dave Heald: davehe...@attbi.com For policy questions, send mail to: Richard Nute: ri...@ieee.org Jim Bacher: j.bac...@ieee.org All emc-pstc postings are archived and searchable on the web at: http://ieeepstc.mindcruiser.com/ Click on browse and then emc-pstc mailing list
RE: suggestion for 100W audio amp
Hi Susan, We found that a McIntosh MC2100 (industrial packaged dual 100 Watt version amplifier) bridged works well for MIL-STD-461 CS101 Tests. This arrangement meets the required 2 Ohm source impedance. This paired up with the Solar Audio transformer can produce surprising amounts of current and includes the required amplifier protection (transformer coupled output). They can also be used for transient investigations as well. Philip Ross Wellington Mgr. Signal Integrity EMI L-3 Communications CSW -Original Message- From: shbe...@rockwellcollins.com [mailto:shbe...@rockwellcollins.com] Sent: Friday, July 19, 2002 8:25 AM To: emc-p...@ieee.org Subject: suggestion for 100W audio amp Hello group, I was hoping that someone could suggest a vendor/model number for an 100 W audio amplifier for use performing DO-160D, change 2, section 18 audio susceptibility testing. I am currently using an old Solar 6552-1A, but sometimes it can't provide the pre-calibrated power (100W) into the EUT. It could also be used for 461E CS101 testing. Thanks in advance, Susan Beard --- This message is from the IEEE EMC Society Product Safety Technical Committee emc-pstc discussion list. Visit our web site at: http://www.ewh.ieee.org/soc/emcs/pstc/ To cancel your subscription, send mail to: majord...@ieee.org with the single line: unsubscribe emc-pstc For help, send mail to the list administrators: Ron Pickard: emc-p...@hypercom.com Dave Heald: davehe...@attbi.com For policy questions, send mail to: Richard Nute: ri...@ieee.org Jim Bacher: j.bac...@ieee.org All emc-pstc postings are archived and searchable on the web at: http://ieeepstc.mindcruiser.com/ Click on browse and then emc-pstc mailing list --- This message is from the IEEE EMC Society Product Safety Technical Committee emc-pstc discussion list. Visit our web site at: http://www.ewh.ieee.org/soc/emcs/pstc/ To cancel your subscription, send mail to: majord...@ieee.org with the single line: unsubscribe emc-pstc For help, send mail to the list administrators: Ron Pickard: emc-p...@hypercom.com Dave Heald: davehe...@attbi.com For policy questions, send mail to: Richard Nute: ri...@ieee.org Jim Bacher: j.bac...@ieee.org All emc-pstc postings are archived and searchable on the web at: http://ieeepstc.mindcruiser.com/ Click on browse and then emc-pstc mailing list
RE: Nema 5-15R sockets
In fact, soft copy of NEMA WD-6 from www.nema.org is free!! If only IEC ... Bob Johnson ITE Safety -Original Message- From: owner-emc-p...@majordomo.ieee.org [mailto:owner-emc-p...@majordomo.ieee.org] On Behalf Of ron_well...@agilent.com Sent: Monday, July 22, 2002 9:02 AM To: jim.eich...@xantrex.com; emc-p...@majordomo.ieee.org Subject: RE: Nema 5-15R sockets Hello Jim, By now you have received many replies to your message. However, since your orientation question has been asked many, many times before in my neck of the woods, here is what I know regarding your two questions: 1) Not specified in the NEC or the CEC. However, receptacle orientation is usually determined by either: a) the electrician who installs the receptacle, by their preference, or b) a localized code or practice. In some cases, various hospitals have their own requirements for receptacle installation. 2) Get a copy of NEMA WD-6. It's available electronically (www.nema.org) and doesn't cost big bucks. Besides, it's a good reference to have for all North American plug and receptacle configurations. Regards, +=+ |Ronald R. Wellman|Voice : 408-345-8229 | |Agilent Technologies |FAX : 408-553-2412 | |5301 Stevens Creek Blvd.,|E-Mail: ron_well...@agilent.com| |Mailstop 54L-BB |WWW : http://www.agilent.com | |Santa Clara, California 95052 USA| | +=+ attachment: Robert Johnson.vcf
RE: Requirements for Device Connected to Phone Line
A bunch of FCC Part68 tests, and registration of product. If you integrate a module that is already approved you can avoid all the testing but I think you still have to register. Canada is just paperwork submission of FCC results and more fees. For fee information see the Administrative Council for Terminal Attachment (ACTA)http://www.part68.org this site provides useful information regarding what is required. Daniel J. Pierce Sr. Design Engineer OpenGlobe, Inc. (An Escient Technologies Affiliate) 6325 Digital Way Indianapolis, IN 46278 mailto:dpie...@openglobe.net P: (317) 616.6587 F: (317) 616.6587 -Original Message- From: don_macart...@selinc.com [mailto:don_macart...@selinc.com] Sent: Monday, July 22, 2002 9:07 AM To: emc-p...@majordomo.ieee.org Subject: Requirements for Device Connected to Phone Line Hello Group, What are the requirements for devices which connect to the public phone line of the U.S. and Canada? Regards, Don -- This e-mail may contain SEL confidential information. The opinions expressed are not necessarily those of SEL. Any unauthorized disclosure, distribution or other use is prohibited. If you received this e-mail in error, please notify the sender, permanently delete it, and destroy any printout. Thank you. --- This message is from the IEEE EMC Society Product Safety Technical Committee emc-pstc discussion list. Visit our web site at: http://www.ewh.ieee.org/soc/emcs/pstc/ To cancel your subscription, send mail to: majord...@ieee.org with the single line: unsubscribe emc-pstc For help, send mail to the list administrators: Ron Pickard: emc-p...@hypercom.com Dave Heald: davehe...@attbi.com For policy questions, send mail to: Richard Nute: ri...@ieee.org Jim Bacher: j.bac...@ieee.org All emc-pstc postings are archived and searchable on the web at: http://ieeepstc.mindcruiser.com/ Click on browse and then emc-pstc mailing list attachment: Dan_Pierce.vcf
RE: IEC60320
A number of inlets have provision in their design for double pole fusing but can be purchased configured as single pole fused devices. In this configuration this does provide a convenient location to supply a spare fuse. Over the years we have frequently done this on our products. Regards, Chris ___ Chris James Engineering Services Manager Dolby Laboratories, Inc. (UK) Direct: 01793 842136 -Original Message- From: Crabb, John [mailto:jo...@exchange.scotland.ncr.com] Sent: 22 July 2002 16:04 To: emc-p...@majordomo.ieee.org Subject: RE: IEC60320 I have never heard of an inlet with provision for a spare fuse. Are you sure it wasn't a double pole fused inlet ? (SOME PEOPLE say double pole fusing is a requirement of IEC 60950, but it ain't necessarily so). Regards, John Crabb, NCR Financial Solutions Group Ltd., Discovery Centre, 3 Fulton Road, Dundee, Scotland, DD2 4SW E-Mail :john.cr...@scotland.ncr.com Tel: +44 (0)1382-592289 (direct ). Fax +44 (0)1382-622243. -Original Message- From: Mark Schmidt [mailto:mschm...@xrite.com] Sent: 22 July 2002 14:28 To: emc-p...@majordomo.ieee.org Subject: RE: IEC60320 Oops, I seem to left the problem out. The manufacturer now puts a rib in the spare fuse holder so you cannot put a spare fuse in. Sorry for the confusion. Mark Schmidt Regulatory Compliance X-Rite Incorporated USA (616) 257 2469 mschm...@xrite.com -Original Message- From: Mark Schmidt Sent: Monday, July 22, 2002 8:46 AM To: emc-p...@majordomo.ieee.org Subject:IEC60320 Is anyone familiar with IEC60320? We use an AC input module that includes a power switch and fuse holder. The fuse holder is a separate piece that is inserted in the module it also allowed storage for a spare fuse. In our product we shipped them with a spare fuse in order to benefit the customer in case they needed it. The intent was that in case they did blow the fuse that they would have an identical and properly rated replacement fuse available to them. This would hopefully eliminate or reduce the risk of putting an improperly rated fuse in the module. I received a letter from the manufacturer indicating that the design change was made in order to comply with IEC60320. It seems to me that we have now introduced a additional risk, it just doesn't make sense to me. Any comments? Mark Schmidt Regulatory Compliance X-Rite Incorporated USA (616) 257 2469 mschm...@xrite.com mailto:mschm...@xrite.com --- This message is from the IEEE EMC Society Product Safety Technical Committee emc-pstc discussion list. Visit our web site at: http://www.ewh.ieee.org/soc/emcs/pstc/ To cancel your subscription, send mail to: majord...@ieee.org with the single line: unsubscribe emc-pstc For help, send mail to the list administrators: Ron Pickard: emc-p...@hypercom.com Dave Heald: davehe...@attbi.com For policy questions, send mail to: Richard Nute: ri...@ieee.org Jim Bacher: j.bac...@ieee.org All emc-pstc postings are archived and searchable on the web at: http://ieeepstc.mindcruiser.com/ Click on browse and then emc-pstc mailing list --- This message is from the IEEE EMC Society Product Safety Technical Committee emc-pstc discussion list. Visit our web site at: http://www.ewh.ieee.org/soc/emcs/pstc/ To cancel your subscription, send mail to: majord...@ieee.org with the single line: unsubscribe emc-pstc For help, send mail to the list administrators: Ron Pickard: emc-p...@hypercom.com Dave Heald: davehe...@attbi.com For policy questions, send mail to: Richard Nute: ri...@ieee.org Jim Bacher: j.bac...@ieee.org All emc-pstc postings are archived and searchable on the web at: http://ieeepstc.mindcruiser.com/ Click on browse and then emc-pstc mailing list --- This message is from the IEEE EMC Society Product Safety Technical Committee emc-pstc discussion list. Visit our web site at: http://www.ewh.ieee.org/soc/emcs/pstc/ To cancel your subscription, send mail to: majord...@ieee.org with the single line: unsubscribe emc-pstc For help, send mail to the list administrators: Ron Pickard: emc-p...@hypercom.com Dave Heald: davehe...@attbi.com For policy questions, send mail to: Richard Nute: ri...@ieee.org Jim Bacher: j.bac...@ieee.org All emc-pstc postings are archived and searchable on the web at: http://ieeepstc.mindcruiser.com/ Click on browse and then emc-pstc mailing list This message (including any attachments) may contain confidential information intended for a specific individual and purpose.
RE: EMC Directive/Repaired Apparatus
Joe, I've given this topic a fair amount of thought. I believe the intent of the new approach directives is only for equipment being put into service for the first time. My understanding is if the repair is only a repair and not an upgrade of any kind, then you may simply put it back into service at the same place where it was originally placed into service. There are a number of documents that give good guidance at: http://europa.eu.int/comm/enterprise/newapproach/index.htm There are a number of documents linked to this page and I suggest a full reading before deciding a course of action. I got the most useful information at: http://europa.eu.int/comm/enterprise/newapproach/legislation/guide/legislati on.htm This is a guide to the implementation of the new approach directives and there is a single PDF version near the top of the page. In this guide I found several items of interest plus a fairly good clarification of exactly what is placing on the Community market (or put into service) for the first time. This would seem to exclude repair, refurbishment or renovation of products. The implications are many and here are a few that come to mind, 1) I believe products which have been repaired without changing the original performance, purpose or type, are not subject to further assessment. 2) I also understand that if you are installing any sort of upgrade to the product which was made available after the applicable directive came into force, then the entire product needs to be assessed to current requirements. 3) I do not believe you or the company doing the repair are allowed to keep an inventory of refurbished service spares on hand as the guidance document seems to indicate that the original (serialized) unit must remain where it was first put into service (i.e. no stock piling). 4) Exactly how one provides markings and a declaration for this situation, I cannot say ... 5) Applicable product directives take precedence over provisions set out in this guide. For example, if you are using products to the Medical Equipment Directive, then you should be familiar with discussion it has on repair and refurbishment. Regards, -doug --- Douglas E. Powell, Compliance Engineer Advanced Energy Industries, Inc. Mail stop: 203024 1626 Sharp Point Drive Ft. Collins, CO 80525 mailto:doug.pow...@aei.com --- -Original Message- From: Joe P Martin [mailto:marti...@appliedbiosystems.com] Sent: Tuesday, July 16, 2002 7:13 PM To: emc-p...@majordomo.ieee.org Subject: EMC Directive/Repaired Apparatus To all, The following scenario is in regards to the EMC Directive. We are a manufacturer located in the US. We have various products that were placed on the EU market prior to the enforcement of the EMC Directive. We need to repair some of these products. The repairs will not modify the product to an as new piece of apparatus. We want to have the products repaired in the US. Questions: 1. Following the repairs, do we need to meet the requirements of the Directive? If so, why? 2. If not, how do we get the products back into the EU without the CE Marking? Hopefully someone has had some experience with this issue. All responses are appreciated. Regards Joe Martin EMC/Product Safety Engineer Applied Biosystems marti...@appliedbiosystems.com ___ This message, including any attachments, may contain information that is confidential and proprietary information of Advanced Energy Industries, Inc. The dissemination, distribution, use or copying of this message or any of its attachments is strictly prohibited without the express written consent of Advanced Energy Industries, Inc. --- This message is from the IEEE EMC Society Product Safety Technical Committee emc-pstc discussion list. Visit our web site at: http://www.ewh.ieee.org/soc/emcs/pstc/ To cancel your subscription, send mail to: majord...@ieee.org with the single line: unsubscribe emc-pstc For help, send mail to the list administrators: Ron Pickard: emc-p...@hypercom.com Dave Heald: davehe...@attbi.com For policy questions, send mail to: Richard Nute: ri...@ieee.org Jim Bacher: j.bac...@ieee.org All emc-pstc postings are archived and searchable on the web at: http://ieeepstc.mindcruiser.com/ Click on browse and then emc-pstc mailing list
RE: IEC60320
It is not a double pole fuse and that is not a requirement. Regards, Mark -Original Message- From: Crabb, John [mailto:jo...@exchange.scotland.ncr.com] Sent: Monday, July 22, 2002 11:04 AM To: emc-p...@majordomo.ieee.org Subject:RE: IEC60320 I have never heard of an inlet with provision for a spare fuse. Are you sure it wasn't a double pole fused inlet ? (SOME PEOPLE say double pole fusing is a requirement of IEC 60950, but it ain't necessarily so). --- This message is from the IEEE EMC Society Product Safety Technical Committee emc-pstc discussion list. Visit our web site at: http://www.ewh.ieee.org/soc/emcs/pstc/ To cancel your subscription, send mail to: majord...@ieee.org with the single line: unsubscribe emc-pstc For help, send mail to the list administrators: Ron Pickard: emc-p...@hypercom.com Dave Heald: davehe...@attbi.com For policy questions, send mail to: Richard Nute: ri...@ieee.org Jim Bacher: j.bac...@ieee.org All emc-pstc postings are archived and searchable on the web at: http://ieeepstc.mindcruiser.com/ Click on browse and then emc-pstc mailing list
RE: IEC60320
IEC 60320 is a standard for the appliance coupler (male and female, cord and chassis styles) in assorted configurations (to cover assorted ampacities, temperatures, 2 or 3 wire) and does not include fuseholder specs. See UL 512 or CSA 39 for fuseholders, I don't believe there is an IEC fuseholder standard, but there is IEC 60127 for miniature fuses. I don't understand the risk you claim to introduce. You are not obligated to provide a spare fuse, but providing it would reduce risk. Bob Johnson ITE Safety -Original Message- From: owner-emc-p...@majordomo.ieee.org [mailto:owner-emc-p...@majordomo.ieee.org] On Behalf Of Mark Schmidt Sent: Monday, July 22, 2002 8:46 AM To: emc-p...@majordomo.ieee.org Subject: IEC60320 Is anyone familiar with IEC60320? We use an AC input module that includes a power switch and fuse holder. The fuse holder is a separate piece that is inserted in the module it also allowed storage for a spare fuse. In our product we shipped them with a spare fuse in order to benefit the customer in case they needed it. The intent was that in case they did blow the fuse that they would have an identical and properly rated replacement fuse available to them. This would hopefully eliminate or reduce the risk of putting an improperly rated fuse in the module. I received a letter from the manufacturer indicating that the design change was made in order to comply with IEC60320. It seems to me that we have now introduced a additional risk, it just doesn't make sense to me. Any comments? Mark Schmidt Regulatory Compliance X-Rite Incorporated USA (616) 257 2469 mschm...@xrite.com mailto:mschm...@xrite.com --- This message is from the IEEE EMC Society Product Safety Technical Committee emc-pstc discussion list. Visit our web site at: http://www.ewh.ieee.org/soc/emcs/pstc/ To cancel your subscription, send mail to: majord...@ieee.org with the single line: unsubscribe emc-pstc For help, send mail to the list administrators: Ron Pickard: emc-p...@hypercom.com Dave Heald: davehe...@attbi.com For policy questions, send mail to: Richard Nute: ri...@ieee.org Jim Bacher: j.bac...@ieee.org All emc-pstc postings are archived and searchable on the web at: http://ieeepstc.mindcruiser.com/ Click on browse and then emc-pstc mailing list attachment: Robert Johnson.vcf
RE: IEC60320
I have never heard of an inlet with provision for a spare fuse. Are you sure it wasn't a double pole fused inlet ? (SOME PEOPLE say double pole fusing is a requirement of IEC 60950, but it ain't necessarily so). Regards, John Crabb, NCR Financial Solutions Group Ltd., Discovery Centre, 3 Fulton Road, Dundee, Scotland, DD2 4SW E-Mail :john.cr...@scotland.ncr.com Tel: +44 (0)1382-592289 (direct ). Fax +44 (0)1382-622243. -Original Message- From: Mark Schmidt [mailto:mschm...@xrite.com] Sent: 22 July 2002 14:28 To: emc-p...@majordomo.ieee.org Subject: RE: IEC60320 Oops, I seem to left the problem out. The manufacturer now puts a rib in the spare fuse holder so you cannot put a spare fuse in. Sorry for the confusion. Mark Schmidt Regulatory Compliance X-Rite Incorporated USA (616) 257 2469 mschm...@xrite.com -Original Message- From: Mark Schmidt Sent: Monday, July 22, 2002 8:46 AM To: emc-p...@majordomo.ieee.org Subject:IEC60320 Is anyone familiar with IEC60320? We use an AC input module that includes a power switch and fuse holder. The fuse holder is a separate piece that is inserted in the module it also allowed storage for a spare fuse. In our product we shipped them with a spare fuse in order to benefit the customer in case they needed it. The intent was that in case they did blow the fuse that they would have an identical and properly rated replacement fuse available to them. This would hopefully eliminate or reduce the risk of putting an improperly rated fuse in the module. I received a letter from the manufacturer indicating that the design change was made in order to comply with IEC60320. It seems to me that we have now introduced a additional risk, it just doesn't make sense to me. Any comments? Mark Schmidt Regulatory Compliance X-Rite Incorporated USA (616) 257 2469 mschm...@xrite.com mailto:mschm...@xrite.com --- This message is from the IEEE EMC Society Product Safety Technical Committee emc-pstc discussion list. Visit our web site at: http://www.ewh.ieee.org/soc/emcs/pstc/ To cancel your subscription, send mail to: majord...@ieee.org with the single line: unsubscribe emc-pstc For help, send mail to the list administrators: Ron Pickard: emc-p...@hypercom.com Dave Heald: davehe...@attbi.com For policy questions, send mail to: Richard Nute: ri...@ieee.org Jim Bacher: j.bac...@ieee.org All emc-pstc postings are archived and searchable on the web at: http://ieeepstc.mindcruiser.com/ Click on browse and then emc-pstc mailing list --- This message is from the IEEE EMC Society Product Safety Technical Committee emc-pstc discussion list. Visit our web site at: http://www.ewh.ieee.org/soc/emcs/pstc/ To cancel your subscription, send mail to: majord...@ieee.org with the single line: unsubscribe emc-pstc For help, send mail to the list administrators: Ron Pickard: emc-p...@hypercom.com Dave Heald: davehe...@attbi.com For policy questions, send mail to: Richard Nute: ri...@ieee.org Jim Bacher: j.bac...@ieee.org All emc-pstc postings are archived and searchable on the web at: http://ieeepstc.mindcruiser.com/ Click on browse and then emc-pstc mailing list --- This message is from the IEEE EMC Society Product Safety Technical Committee emc-pstc discussion list. Visit our web site at: http://www.ewh.ieee.org/soc/emcs/pstc/ To cancel your subscription, send mail to: majord...@ieee.org with the single line: unsubscribe emc-pstc For help, send mail to the list administrators: Ron Pickard: emc-p...@hypercom.com Dave Heald: davehe...@attbi.com For policy questions, send mail to: Richard Nute: ri...@ieee.org Jim Bacher: j.bac...@ieee.org All emc-pstc postings are archived and searchable on the web at: http://ieeepstc.mindcruiser.com/ Click on browse and then emc-pstc mailing list
RE: IEC60320
Hello Mark, This sounds very odd. I would ask the manufacturer why there is a non-compliance with IEC 60320 and how this compromises product safeguards. Regards, +=+ |Ronald R. Wellman|Voice : 408-345-8229 | |Agilent Technologies |FAX : 408-553-2412 | |5301 Stevens Creek Blvd.,|E-Mail: ron_well...@agilent.com| |Mailstop 54L-BB |WWW : http://www.agilent.com | |Santa Clara, California 95052 USA| | +=+ -Original Message- From: Mark Schmidt [mailto:mschm...@xrite.com] Sent: Monday, July 22, 2002 6:28 AM To: emc-p...@majordomo.ieee.org Subject: RE: IEC60320 Oops, I seem to left the problem out. The manufacturer now puts a rib in the spare fuse holder so you cannot put a spare fuse in. Sorry for the confusion. Mark Schmidt Regulatory Compliance X-Rite Incorporated USA (616) 257 2469 mschm...@xrite.com -Original Message- From: Mark Schmidt Sent: Monday, July 22, 2002 8:46 AM To: emc-p...@majordomo.ieee.org Subject:IEC60320 Is anyone familiar with IEC60320? We use an AC input module that includes a power switch and fuse holder. The fuse holder is a separate piece that is inserted in the module it also allowed storage for a spare fuse. In our product we shipped them with a spare fuse in order to benefit the customer in case they needed it. The intent was that in case they did blow the fuse that they would have an identical and properly rated replacement fuse available to them. This would hopefully eliminate or reduce the risk of putting an improperly rated fuse in the module. I received a letter from the manufacturer indicating that the design change was made in order to comply with IEC60320. It seems to me that we have now introduced a additional risk, it just doesn't make sense to me. Any comments? Mark Schmidt Regulatory Compliance X-Rite Incorporated USA (616) 257 2469 mschm...@xrite.com mailto:mschm...@xrite.com --- This message is from the IEEE EMC Society Product Safety Technical Committee emc-pstc discussion list. Visit our web site at: http://www.ewh.ieee.org/soc/emcs/pstc/ To cancel your subscription, send mail to: majord...@ieee.org with the single line: unsubscribe emc-pstc For help, send mail to the list administrators: Ron Pickard: emc-p...@hypercom.com Dave Heald: davehe...@attbi.com For policy questions, send mail to: Richard Nute: ri...@ieee.org Jim Bacher: j.bac...@ieee.org All emc-pstc postings are archived and searchable on the web at: http://ieeepstc.mindcruiser.com/ Click on browse and then emc-pstc mailing list --- This message is from the IEEE EMC Society Product Safety Technical Committee emc-pstc discussion list. Visit our web site at: http://www.ewh.ieee.org/soc/emcs/pstc/ To cancel your subscription, send mail to: majord...@ieee.org with the single line: unsubscribe emc-pstc For help, send mail to the list administrators: Ron Pickard: emc-p...@hypercom.com Dave Heald: davehe...@attbi.com For policy questions, send mail to: Richard Nute: ri...@ieee.org Jim Bacher: j.bac...@ieee.org All emc-pstc postings are archived and searchable on the web at: http://ieeepstc.mindcruiser.com/ Click on browse and then emc-pstc mailing list --- This message is from the IEEE EMC Society Product Safety Technical Committee emc-pstc discussion list. Visit our web site at: http://www.ewh.ieee.org/soc/emcs/pstc/ To cancel your subscription, send mail to: majord...@ieee.org with the single line: unsubscribe emc-pstc For help, send mail to the list administrators: Ron Pickard: emc-p...@hypercom.com Dave Heald: davehe...@attbi.com For policy questions, send mail to: Richard Nute: ri...@ieee.org Jim Bacher: j.bac...@ieee.org All emc-pstc postings are archived and searchable on the web at: http://ieeepstc.mindcruiser.com/ Click on browse and then emc-pstc mailing list
Requirements for Device Connected to Phone Line
Hello Group, What are the requirements for devices which connect to the public phone line of the U.S. and Canada? Regards, Don -- This e-mail may contain SEL confidential information. The opinions expressed are not necessarily those of SEL. Any unauthorized disclosure, distribution or other use is prohibited. If you received this e-mail in error, please notify the sender, permanently delete it, and destroy any printout. Thank you. --- This message is from the IEEE EMC Society Product Safety Technical Committee emc-pstc discussion list. Visit our web site at: http://www.ewh.ieee.org/soc/emcs/pstc/ To cancel your subscription, send mail to: majord...@ieee.org with the single line: unsubscribe emc-pstc For help, send mail to the list administrators: Ron Pickard: emc-p...@hypercom.com Dave Heald: davehe...@attbi.com For policy questions, send mail to: Richard Nute: ri...@ieee.org Jim Bacher: j.bac...@ieee.org All emc-pstc postings are archived and searchable on the web at: http://ieeepstc.mindcruiser.com/ Click on browse and then emc-pstc mailing list
RE: IEC60320
Oops, I seem to left the problem out. The manufacturer now puts a rib in the spare fuse holder so you cannot put a spare fuse in. Sorry for the confusion. Mark Schmidt Regulatory Compliance X-Rite Incorporated USA (616) 257 2469 mschm...@xrite.com -Original Message- From: Mark Schmidt Sent: Monday, July 22, 2002 8:46 AM To: emc-p...@majordomo.ieee.org Subject:IEC60320 Is anyone familiar with IEC60320? We use an AC input module that includes a power switch and fuse holder. The fuse holder is a separate piece that is inserted in the module it also allowed storage for a spare fuse. In our product we shipped them with a spare fuse in order to benefit the customer in case they needed it. The intent was that in case they did blow the fuse that they would have an identical and properly rated replacement fuse available to them. This would hopefully eliminate or reduce the risk of putting an improperly rated fuse in the module. I received a letter from the manufacturer indicating that the design change was made in order to comply with IEC60320. It seems to me that we have now introduced a additional risk, it just doesn't make sense to me. Any comments? Mark Schmidt Regulatory Compliance X-Rite Incorporated USA (616) 257 2469 mschm...@xrite.com mailto:mschm...@xrite.com --- This message is from the IEEE EMC Society Product Safety Technical Committee emc-pstc discussion list. Visit our web site at: http://www.ewh.ieee.org/soc/emcs/pstc/ To cancel your subscription, send mail to: majord...@ieee.org with the single line: unsubscribe emc-pstc For help, send mail to the list administrators: Ron Pickard: emc-p...@hypercom.com Dave Heald: davehe...@attbi.com For policy questions, send mail to: Richard Nute: ri...@ieee.org Jim Bacher: j.bac...@ieee.org All emc-pstc postings are archived and searchable on the web at: http://ieeepstc.mindcruiser.com/ Click on browse and then emc-pstc mailing list --- This message is from the IEEE EMC Society Product Safety Technical Committee emc-pstc discussion list. Visit our web site at: http://www.ewh.ieee.org/soc/emcs/pstc/ To cancel your subscription, send mail to: majord...@ieee.org with the single line: unsubscribe emc-pstc For help, send mail to the list administrators: Ron Pickard: emc-p...@hypercom.com Dave Heald: davehe...@attbi.com For policy questions, send mail to: Richard Nute: ri...@ieee.org Jim Bacher: j.bac...@ieee.org All emc-pstc postings are archived and searchable on the web at: http://ieeepstc.mindcruiser.com/ Click on browse and then emc-pstc mailing list
RE: Nema 5-15R sockets
Hello all, I thought that if the ground pin is at the bottom it will be the last pin to break contact if the plug is pulled out of the wall receptacle? Michael Sundstrom NOKIA TCC Dallas / EMC ofc: (972) 374-1462 cell: (817) 917-5021 amateur call: KB5UKT -Original Message- From: ext Jim Eichner [mailto:jim.eich...@xantrex.com] Sent: Friday, July 19, 2002 2:39 PM To: 'Art Michael'; 'EMC-PSTC - forum' Subject: RE: Nema 5-15R sockets Thanks for the reply Art. I was starting to convince myself that it was indeed local custom, not code, that determined the orientation. I heard another explanation that I find amusing and perhaps practical: that with the ground at the bottom it looks too much like a face and children will be more tempted to play with it, so it should be mounted ground-up! My fax number is below, and I really appreciate you providing whatever dimensions you can. Note that I am interested in the blade and ground pin dimensions of the male plug, not the female socket, please. Thanks, Jim Eichner, P.Eng. Manager, Engineering Services Xantrex Technology Inc. Mobile Power phone: (604) 422-2546 fax: (604) 420-1591 e-mail: jim.eich...@xantrex.com web: www.xantrex.com Confidentiality Notice: This email message, including any attachments, is for the sole use of the intended recipient(s) and may contain confidential and privileged information. Any unauthorized review, use, disclosure or distribution is prohibited. If you are not the intended recipient, please contact the sender by reply e-mail and destroy all copies of the original message. -Original Message- From: Art Michael [mailto:amich...@connix.com] Sent: Friday, July 19, 2002 10:59 AM To: Jim Eichner Cc: 'EMC-PSTC - forum' Subject: Re: Nema 5-15R sockets Hello Jim, I don't believe the orientation of the U-ground pin is declared anyplace in the NEC. When I recently approached my local AHJ with this question he related that it is a matter of custom (locality dependent). In this area, central Connecticut, the custom is: For commercial/industrial applications, U-Ground topmost For household wiring, U-Ground towards the bottom The rationale offered for the U-Ground topmost; if the plug partially separates from the outlet, anything falling into the opening between the plug and the outlet will first encounter the grounding pin. (seems to me that argument holds whether the use is commercial/industrial or household). Re dimensions of the outlet; send me your fax # and I'll fax you the dimensions. Regards, Art Michael -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- |http://www.safetylink.com | || | The Safety Link is the most comprehensive collection | |of product safety and standards links on the WEB| |Check our latest offer. | || || | Int'l Product Safety News | | Founded in 1988 | || | P.O.Box 1561 - WWW | |Middletown CT 06457-8061 U.S.A. | | Phone: (860) 344-1651 Fax: (860) 346-9066 | | email: i...@safetylink.com | -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --- On Fri, 19 Jul 2002, Jim Eichner wrote: A couple of questions about our standard North American 120Vac socket: 1. Orientation: We have lots of people in the office here on both sides of this one, and I can't find a normative reference in the CEC or the NEC. Which is the correct way up when installing a socket on a wall - ground pin above the L and N blades, or L and N above the ground? What is the code reference for this requirement, or is there none? 2. Dimensions: Can anybody share the spec's for the dimensions, with tolerances, of the line, neutral, and ground blades for this configuration? I'm sure it's in the UL and CSA standards but I don't want to spend hundreds of $ for a one-time question. We have no on-going need for these standards! Thanks in advance for your help, Regards, Jim Eichner, P.Eng. Manager, Engineering Services Xantrex Technology Inc. Mobile Power web: www.xantrex.com http://www.xantrex.com Any opinions expressed are accidental. I have none. Confidentiality Notice: This email message, including any attachments, is for the sole use of the intended recipient(s) and may contain confidential and privileged information. Any unauthorized review, use, disclosure or distribution is prohibited. If you are not the intended recipient, please
RE: Nema 5-15R sockets
Hello Jim, By now you have received many replies to your message. However, since your orientation question has been asked many, many times before in my neck of the woods, here is what I know regarding your two questions: 1) Not specified in the NEC or the CEC. However, receptacle orientation is usually determined by either: a) the electrician who installs the receptacle, by their preference, or b) a localized code or practice. In some cases, various hospitals have their own requirements for receptacle installation. 2) Get a copy of NEMA WD-6. It's available electronically (www.nema.org) and doesn't cost big bucks. Besides, it's a good reference to have for all North American plug and receptacle configurations. Regards, +=+ |Ronald R. Wellman|Voice : 408-345-8229 | |Agilent Technologies |FAX : 408-553-2412 | |5301 Stevens Creek Blvd.,|E-Mail: ron_well...@agilent.com| |Mailstop 54L-BB |WWW : http://www.agilent.com | |Santa Clara, California 95052 USA| | +=+ -Original Message- From: Jim Eichner [mailto:jim.eich...@xantrex.com] Sent: Friday, July 19, 2002 10:40 AM To: 'EMC-PSTC - forum' Subject: Nema 5-15R sockets A couple of questions about our standard North American 120Vac socket: 1. Orientation: We have lots of people in the office here on both sides of this one, and I can't find a normative reference in the CEC or the NEC. Which is the correct way up when installing a socket on a wall - ground pin above the L and N blades, or L and N above the ground? What is the code reference for this requirement, or is there none? 2. Dimensions: Can anybody share the spec's for the dimensions, with tolerances, of the line, neutral, and ground blades for this configuration? I'm sure it's in the UL and CSA standards but I don't want to spend hundreds of $ for a one-time question. We have no on-going need for these standards! Thanks in advance for your help, Regards, Jim Eichner, P.Eng. Manager, Engineering Services Xantrex Technology Inc. Mobile Power web: www.xantrex.com http://www.xantrex.com Any opinions expressed are accidental. I have none. Confidentiality Notice: This email message, including any attachments, is for the sole use of the intended recipient(s) and may contain confidential and privileged information. Any unauthorized review, use, disclosure or distribution is prohibited. If you are not the intended recipient, please contact the sender by reply e-mail and destroy all copies of the original message. --- This message is from the IEEE EMC Society Product Safety Technical Committee emc-pstc discussion list. Visit our web site at: http://www.ewh.ieee.org/soc/emcs/pstc/ To cancel your subscription, send mail to: majord...@ieee.org with the single line: unsubscribe emc-pstc For help, send mail to the list administrators: Ron Pickard: emc-p...@hypercom.com Dave Heald: davehe...@attbi.com For policy questions, send mail to: Richard Nute: ri...@ieee.org Jim Bacher: j.bac...@ieee.org All emc-pstc postings are archived and searchable on the web at: http://ieeepstc.mindcruiser.com/ Click on browse and then emc-pstc mailing list --- This message is from the IEEE EMC Society Product Safety Technical Committee emc-pstc discussion list. Visit our web site at: http://www.ewh.ieee.org/soc/emcs/pstc/ To cancel your subscription, send mail to: majord...@ieee.org with the single line: unsubscribe emc-pstc For help, send mail to the list administrators: Ron Pickard: emc-p...@hypercom.com Dave Heald: davehe...@attbi.com For policy questions, send mail to: Richard Nute: ri...@ieee.org Jim Bacher: j.bac...@ieee.org All emc-pstc postings are archived and searchable on the web at: http://ieeepstc.mindcruiser.com/ Click on browse and then emc-pstc mailing list
IEC60320
Is anyone familiar with IEC60320? We use an AC input module that includes a power switch and fuse holder. The fuse holder is a separate piece that is inserted in the module it also allowed storage for a spare fuse. In our product we shipped them with a spare fuse in order to benefit the customer in case they needed it. The intent was that in case they did blow the fuse that they would have an identical and properly rated replacement fuse available to them. This would hopefully eliminate or reduce the risk of putting an improperly rated fuse in the module. I received a letter from the manufacturer indicating that the design change was made in order to comply with IEC60320. It seems to me that we have now introduced a additional risk, it just doesn’t make sense to me. Any comments? Mark Schmidt Regulatory Compliance X-Rite Incorporated USA (616) 257 2469 mschm...@xrite.com mailto:mschm...@xrite.com --- This message is from the IEEE EMC Society Product Safety Technical Committee emc-pstc discussion list. Visit our web site at: http://www.ewh.ieee.org/soc/emcs/pstc/ To cancel your subscription, send mail to: majord...@ieee.org with the single line: unsubscribe emc-pstc For help, send mail to the list administrators: Ron Pickard: emc-p...@hypercom.com Dave Heald: davehe...@attbi.com For policy questions, send mail to: Richard Nute: ri...@ieee.org Jim Bacher: j.bac...@ieee.org All emc-pstc postings are archived and searchable on the web at: http://ieeepstc.mindcruiser.com/ Click on browse and then emc-pstc mailing list
Re: Subharmonics.
Derek Walton wrote: I'm testing a product that's switching at 50 kHz, modulated by a 1 kHz signal. I'm getting a great deal of noise between 9 kHz to 13 kHz, I think is related. Specifically, it goes when I stop the modulation... Any ideas on ways to clean this up. Filtering seems to be effective, but HUGE! A couple of thoughts: What's the stability of the switcher's control loop at 1 KHz? At 10 KHz? THat's the first thing I'd suspect. You may be driving it into an unstable region with modulation. Is this sine wave modulation? What happens when you change the switching frequency? The modulating frequency? It may be that this is a mixing product of the wave forms involved. Cortland --- This message is from the IEEE EMC Society Product Safety Technical Committee emc-pstc discussion list. Visit our web site at: http://www.ewh.ieee.org/soc/emcs/pstc/ To cancel your subscription, send mail to: majord...@ieee.org with the single line: unsubscribe emc-pstc For help, send mail to the list administrators: Ron Pickard: emc-p...@hypercom.com Dave Heald: davehe...@attbi.com For policy questions, send mail to: Richard Nute: ri...@ieee.org Jim Bacher: j.bac...@ieee.org All emc-pstc postings are archived and searchable on the web at: http://ieeepstc.mindcruiser.com/ Click on browse and then emc-pstc mailing list
Sub harmonics
The probability is that you are overloading the amplifier with the modulation. Depending on the depth of the modulation, can you set the (unmodulated) amplifier output to the peak level of the modulated signal? If you can, is this still ok is there distortion? If this maximum amplifier signal is distorted, then you need a higher power amplifier. If the amplifier can cope with this increased load, then is the 1 KHz input signal ok? Finally, check the modulation circuits. Hope this helps, Neil Helsby ** This email and any files transmitted with it are confidential and intended solely for the use of the individual or entity to whom they are addressed. If you have received this email in error please notify the system manager. This footnote also confirms that this email message has been swept by MIMEsweeper for the presence of computer viruses. www.mimesweeper.com ** --- This message is from the IEEE EMC Society Product Safety Technical Committee emc-pstc discussion list. Visit our web site at: http://www.ewh.ieee.org/soc/emcs/pstc/ To cancel your subscription, send mail to: majord...@ieee.org with the single line: unsubscribe emc-pstc For help, send mail to the list administrators: Ron Pickard: emc-p...@hypercom.com Dave Heald: davehe...@attbi.com For policy questions, send mail to: Richard Nute: ri...@ieee.org Jim Bacher: j.bac...@ieee.org All emc-pstc postings are archived and searchable on the web at: http://ieeepstc.mindcruiser.com/ Click on browse and then emc-pstc mailing list
