Transmission line formula?
Anyone have a formula for calculating the Z0 of two parallel rectangular pieces of metal tubing in air? I'm designing a log-periodic antenna and need to get the boom transmission line spacing right. Thanks! Brent DeWitt Datex-Ohmeda --- 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: Setting up an SMT Lab - thermocouple madness - a small chuckle
I read in !emc-pstc that Gary McInturff Gary.McInturff@worldwidepackets .com wrote (in 917063bab0ddb043af5faa73c7a835d40ac...@windlord.wwp.com ) about 'Setting up an SMT Lab - thermocouple madness - a small chuckle' on Wed, 28 Aug 2002: This was a long standing practice and I saw it used many times. It would be highly illegal now. Think of all that pretty green mercury vapour! It's surprising, considering what we read about toxicity on the Web, that you didn't need a new technician for each thermocouple. (;-) Or, maybe you just forgot to mention that? (;-) -- Regards, John Woodgate, OOO - Own Opinions Only. http://www.jmwa.demon.co.uk Interested in professional sound reinforcement and distribution? Then go to http://www.isce.org.uk PLEASE do NOT copy news posts to me by E-MAIL! --- This message is from the IEEE EMC Society Product Safety Technical Committee emc-pstc discussion list. Visit our web site at: http://www.ewh.ieee.org/soc/emcs/pstc/ To cancel your subscription, send mail to: majord...@ieee.org with the single line: unsubscribe emc-pstc For help, send mail to the list administrators: Ron Pickard: emc-p...@hypercom.com Dave Heald: 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: question on capacitor discharging
Susan, For Laboratory Equipment, section 6.10.3 (c) of UL 3101-1, EN 61010-1 and CSA 1010.1 states If plug pins of cord connected equipment receive a charge from an internal capacitor, the pins shall not be hazardous live 5s after disconnection of the supply. Regards Joe Martin Compliance Engineering Applied Biosystems shbeard@rockwellcollin s.com To: emc-p...@ieee.org Sent by: cc: owner-emc-pstc@majordomSubject: question on capacitor discharging o.ieee.org 08/28/2002 07:51 AM Please respond to shbeard Hello to all, Other than MIL-HDBK-454 which states (as a guide) that high voltage circuits and capacitors should be provided with discharging devices unless they discharge to 30 volts or less within 2 seconds after power removal are there other standards that specify/require capacitors to be discharged to a certain voltage within a specified time? Thanks, Susan Beard EMI Engineer --- 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
HP8411xEM
Bonjour, We are looking for bying a second-hand EMI System kit, either HP84110EM or HP84115EM. We are located in Montréal. Merci! François Caron, ing. M.Sc. Concepteur, circuit électronique Systèmes de Sécurité Publique Positron Inc. 5101 Buchan, Montréal, Québec, H4P 2R9 (514) - 345 - 2270 + 2862 (514) - 815 - 1618 (Fido) fca...@positron.qc.ca --- 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: Insulation Distance Between Circuitboard Layers (Safety)
In a former job, I prevailed on them to follow (mostly) a rule of 100 mils clearance between any inner OR outer layer conductor, and conducting objects directly exposed to ESD. This, after a helpful layout designer decided to improve things by adding internal ESD traces interlaced with power and ground. (Don't do that.) However, the problems I've seen with clearance to surge and power-cross were associated with clearance to *vias* (and inside relays - a different matter) on the surface. The epoxy and FR4 material inside were more than sufficient to insulate against 2500 volt surge test voltages, even with 5 mil thickness. I believe the thread you recall was with respect to double insulation IN TRANSFORMERS. To prevent warping, keep the stackup symmetrical. Each layer should be matched by one the same thickness, on the other side. You will also need to insure copper is pretty evenly distributed. 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
Re: Insulation Distance Between Circuitboard Layers (Safety)
In a message dated 8/28/2002, Chris Maxwell writes: Can anyone see any pinholes in my reasoning? Can anyone recall the thread regarding multiple layers of thin insulation? Hi Chris: Wow, you are really pushing the limits with your board design. I work with EN 60950, and the clause in the third edition that is relevant to your question is 2.10.5.3, Printed Boards. The default requirement is 0.4 mm insulation thickness, but there are alternative methods listed in Table 2M. For instance, you can use three layers of sheet insulating material including pre-preg. You can even use two layers if you run a routine production test for electric strength. I don't know how much of this is relevant to EN 61010-1, but hopefully the info on 60950 will be useful in pursuing this. Joe Randolph Telecom Design Consultant Randolph Telecom, Inc. 781-721-2848 http://www.randolph-telecom.com
Insulation Distance Between Circuitboard Layers (Safety)
Hi all, A couple of weeks ago, I started a thread trying to relate creepage and clearance distances on the surface of a circuitboard to layer spacing of interior layers of a circuitboard. I deal with EN 61010-1; and I'm considering double insulation between AC and SELV. The result of that thread was that creepage and clearance is a surface issue. Once inside the board, I should look at the minimum through insulation distances as a guideline. A distance of 0.4mm from EN 60950 was mentioned. Well, we had our board laid out. We put 0.018 between hazardous voltages and SELV. We applied this distance to traces on the same layer and to the interlayer insulation distance. When it came to interlayer insulation, we needed this gap in three places (between four layers of the board). The board is eight layers and has a total thickness of 0.093.Once you do the math and add in the thickness of two ounce copper, this left us about .004 for other layers. So, starting from the component side, we had interlayer insulation thicknesses of 0.018, 0.018, 0.018, 0.004, 0.004, 0.004, 0.004. When we went for prototypes, the board house laughed us out of the building. Their feeling was that this board would warp like a potato chip. The thicker insulation layers on the component side would heat much more slowly than the thin layers on the solder side. This is where it gets sticky* I seem to remember reading an EMC-PSTC thread regarding this minimum thickness saying that the reason behind it was to prevent arcing through pinholes in the insulation. I seem to remember that thread continuing to say that it is alright to use thinner insulation, as long as there are multiple layers of it; and as long as each layer had enough dielectric strength. The reasoning behind this is that pinholes in the insulation layers wouldn't line up; and there would be an infinitesimal probability of there being a pinhole path all of the way through three layers. If there was a pinhole in one layer, there would still be enough dielectric strength in the other layers to prevent arcing. I then combined this with the fact that FR4 has a rating of at least 1200 Volts/mil. This would tell me that I could stack multiple layers of .002 FR4 and have a safe design with about three layers. I also learned that most circuitboard conductive layers are separated by multiple insulation layers of stock sizes such as 106, 1080, 2113... I had to ask the guy at Nelco to explain the jargon to me :-) He also informed me that stacking too many of these fiberglass sheets together would lead to possible degradation of registration. So, I have directed the board house to look at reducing the .018 spaces to .010; but, they need to make sure that this .010 has at least three layers of fiberglass (such as 1 layer of 106 (2 mils thick) and 2 layers of 2113 (4 mils thick)) within it. I then had them divide the saved thickness among the other layers in order to even things out a bit. Can anyone see any pinholes in my reasoning? Can anyone recall the thread regarding multiple layers of thin insulation? Chris Maxwell | Design Engineer - Optical Division email chris.maxw...@nettest.com | dir +1 315 266 5128 | fax +1 315 797 8024 NetTest | 6 Rhoads Drive, Utica, NY 13502 | USA web www.nettest.com | tel +1 315 797 4449 | --- 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: Setting up an SMT Lab - thermocouple madness - a small chuckle
Brian, I thought a bit of thermocouple making history might give you a small chuckle, particularly because it was THE method at a large safety agency. The facilities guy in charge of making thermocouples went through the following process. Both leads were stripped at both ends. One end was then wrapped around the point of a pencil and the leads twisted together and clipped off after three turns. With his left hand the guy would hold the instrument attachment leads to a big electrode. The bead end in his right hand would then be dipped into a coffee cup sized open pool of Mercury. The thermocouple was the last element in a high current path, with a light bulb load. With a flash of light the light bulb illuminated and the dissimilar metals were welded together in the mercury bath. The only safety mechanism I could see was that the impedance of the thermocouple wire was much less than the parallel human body path from the technicians left hand, through his heart, and out to his right hand. Well, okay he had learned or was instructed to not put his other hand into the Mercury pool so I suppose the thermocouple insulation in his right hand was maybe the second fault path. This was a long standing practice and I saw it used many times. Perhaps this would be easier than demonstrating the correlation to argon gas welded devices. Gary -Original Message- From: Brian O'Connell [mailto:boconn...@t-yuden.com] Sent: Wednesday, August 28, 2002 6:48 AM To: emc-p...@majordomo.ieee.org Subject: RE: Setting up an SMT Lab --- 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: CE (EN5013)
Possibly you have a typographical error. Most ENs have 5 digits in the document number, not 4. Is it EN55013? -doug --- Douglas E. Powell, Compliance Engineer Advanced Energy Industries, Inc. Mail stop: 203024 1626 Sharp Point Drive Ft. Collins, CO 80525 970.407.6410 (phone) 970-407.5410 (fax) mailto:doug.pow...@aei.com --- -Original Message- From: Wani, Vijay (V) [mailto:vw...@dow.com] Sent: Tuesday, August 27, 2002 6:34 AM To: 'emc-p...@majordomo.ieee.org' Subject: CE (EN5013) Group: I am looking for CE(EN5013) standard. I will appreciate any help or direction. thank you in advance. vijay wani The Dow Chemical Company 989-636-0473 --- 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 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: EN 60601
Kim, I checked the IEC website and they have a list of all the TRFs in the following link. Unfortunately, I was unable to locate the EN 60601-1 TRF https://domino.iec.ch/webstore/home.nsf/webstore_search.htm?OpenPage Please note that the IEC 601-1 TRF I have (received from the test agencies we work with), states that the TRF originator is UL. Therefore, for your copy you should try by calling the UL office in Denmark (Demko) or the UL office in Frankfurt, Germany. Regards, This e-mail message may contain privileged or confidential information. If you are not the intended recipient, you may not disclose, use, disseminate, distribute, copy or rely upon this message or attachment in any way. If you received this e-mail message in error, please return by forwarding the message and its attachments to the sender. PETER S. MERGUERIAN Technical Director I.T.L. (Product Testing) Ltd. 26 Hacharoshet St., POB 211 Or Yehuda 60251, Israel Tel: + 972-(0)3-5339022 Fax: + 972-(0)3-5339019 Mobile: + 972-(0)54-838175 http://www.itl.co.il http://www.i-spec.com -Original Message- From: Kim Boll Jensen [mailto:kimb...@post7.tele.dk] Sent: Wednesday, August 28, 2002 3:00 PM To: EMC-PSTC Subject: EN 60601 Hi all I need a report form like those used in the CB scheme for EN 60601-1-1;2001 and for EN 60601-1 + A1, 2, 12, 13. I can't find anywhere to buy it. So could some one help me to get a copy or tell me where to buy them. Best regards, Kim Boll Jensen Bolls Raadgivning Denmark --- 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: PFC or Harmonic Current Limitations outside Europe
Jim, When China converted to the CCC approval scheme they adopted the Chinese version of EN 61000-3-2. Japan has a requirement under JEITA to test harmonics at 120V while using an impedance in line. I have heard that Australia and Korea are also moving in this direction. Taiwan follows the US for the most part and I have not heard anything in this arena. I am curious to hear the responses you get on this one. Good luck. Regards, Josh Josh Wiseman EMC/Product Safety (714) 368-2737 [mailto:jwise...@printronix.com] -Original Message- From: Jim Eichner [mailto:jim.eich...@xantrex.com] Sent: Monday, August 26, 2002 12:33 PM To: 'EMC-PSTC - forum' Subject: PFC or Harmonic Current Limitations outside Europe Can anyone provide any information on the requirements for (or lack of) PFC or harmonic current limitation now or in the future, in the following areas: 1. Japan 2. North America (I think I've heard rumours) 3. Australia / New Zealand 4. Any other location you are aware of where it definitely IS a requirement Thanks as always for the group's input. 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 those of my invisible friend, who really exists. Honest. 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
RE: question on capacitor discharging
See IEC 60950 cl. 2.1.1.7 Regards, Kaz Gawrzyjal Dell Computer Corp. -Original Message- From: shbe...@rockwellcollins.com [mailto:shbe...@rockwellcollins.com] Sent: Wednesday, August 28, 2002 9:51 AM To: emc-p...@ieee.org Subject: question on capacitor discharging Hello to all, Other than MIL-HDBK-454 which states (as a guide) that high voltage circuits and capacitors should be provided with discharging devices unless they discharge to 30 volts or less within 2 seconds after power removal are there other standards that specify/require capacitors to be discharged to a certain voltage within a specified time? Thanks, Susan Beard EMI Engineer --- 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
question on capacitor discharging
Hello to all, Other than MIL-HDBK-454 which states (as a guide) that high voltage circuits and capacitors should be provided with discharging devices unless they discharge to 30 volts or less within 2 seconds after power removal are there other standards that specify/require capacitors to be discharged to a certain voltage within a specified time? Thanks, Susan Beard EMI Engineer --- 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: China MII Approval Experts
Hi Jeffrey, The applicant for the MII approval must be a properly registered Chinese company. One item in the application package is a copy of the company's registration documents (company license) stamped by the local bureau of administration (like notorization). It used to be that the application was submitted initially to MII before testing began. That changed about a year or so ago. The application is now submitted after all testing is completed. So, yes, it's possible to begin testing before company registration is complete, as long as the test lab is OK with it. One note: we've seen company registrations drag on longer than expected, causing long delays in the MII approval. Anything you can do to ensure the company registration process goes smoothly will help reduce headaches in your approval process. Hope this helps, -Fred Borda Compliance International www.typeapproval.com At AM 12:07 08/28/02 -0700, Collins, Jeffrey wrote: Group, Fact: You must be a Chinese registered company to sell telecom products in China. Question: Does a company need, to officially be a Chinese registered company prior to submitting the application to MII? If so, when can they file the application? Can you start testing your product at an MII lab before or while your registration is being processed? Your expertise and /or personal experiences are appreciated. Thanks, Jeffrey Collins Sr. HW Engineering Manager EMC/ NEBS/ Reliability/ Safety CIENA Core Switching Division 10480 Ridgeview Court, Cupertino, CA. 95014 (408) 366-4806, Fax (408) 366-4867 jcoll...@ciena.com http://www.ciena.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 Fred Borda Director Marketing Business Development Compliance International www.typeapproval.com -- The experts in telecommunications equipment type approval across the Asia-Pacific region -- 4713 First Street, Suite 280 Pleasanton, California 94566-7362 USA Tel +1.925.417.5571 (direct) Fax +1.925.417.5574 Mobile +1.650.740.5762 fbo...@typeapproval.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
Job Opening - Telecom Sales
Please respond to email below: Nemko, a world leading testing laboratory for EMC, Telecom, Safety, and Wireless, is seeking a sales professional for our Dallas operations to sell testing and approvals services to hi-tech manufacturers. Responsibilities include developing new business. Previous telecom experience is essential. Minimum of 2 years sales experience required. Base + commission + benefits. Fax resume to 972-436-2667 or email: denise.godf...@nemkona.com mailto:denise.godf...@nemkona.com Phillip Godfrey Manager, Product Safety Nemko Dallas, Inc 802 N. Kealy Ave Lewisville. TX75057-3136 T: (972) 436-9600 / F: (972) 436-2667 www.nemkona.com http://www.nemkona.com
RE: Setting up an SMT Lab
It has been my experience that the safety agency, or whatever NCB-designated body, will supply a checklist based on specific IEC 17025 clauses. The audits I've received, depending on the agency, have all focused on different requirements. Note that, unlike the 900x paper chase, 17025-based audits tend to focus on your company's compliance with *technical* requirements and competency of test lab personnel. Of all the stuff required, my biggest hurdle will be (nobody will believe this) demonstrating through empirical and computational methods, that the uncertainty of measurement is not affected by not welding my thermocouples in Argon gas (other than writing PID-control code, this will be the only time I've ever used my school-boy calculus). Two of the three agencies auditing me seem to be very interested in my thermocouples and instrumentation; the other one seems to be more interested in competent test technique. Note that 17025 requires that the organization also operate in accordance with ISO 9001 or ISO 9002. Everything considered, I beleive the TMP, SMT, or whatever will be a good thing if the agencies avoid the 900x mind-numbness. Good Luck. R/S, Brian O'Connell Taiyo Yuden (USA), Inc. -Original Message- From: George Stults [mailto:george.stu...@watchguard.com] Sent: Tuesday, August 27, 2002 3:27 PM To: emc-p...@majordomo.ieee.org Subject: Setting up an SMT Lab Hello group, I am currently considering the possibility of setting up a Supervised Manufacturer Testing (SMT) Lab at my company. This is an entirely new area for me. I would appreciate any comments online or offline as to what experience folks have had with this type of program, positive or negative recommendations or comments, whats good about it, what to watch out for, etc. The type equipment to be evaluated is limited to ITE. --- 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
EN 60601
Hi all I need a report form like those used in the CB scheme for EN 60601-1-1;2001 and for EN 60601-1 + A1, 2, 12, 13. I can't find anywhere to buy it. So could some one help me to get a copy or tell me where to buy them. Best regards, Kim Boll Jensen Bolls Raadgivning Denmark attachment: kimboll.vcf
RE: IEC Guide 104
On the whole, of course safety is involved; but that is not the question at hand. What I am trying to get at is that a particular requirement/test may not be safety related in a particular application. That occurs from time to time in ITE testing, so is there any reason why the same investigative rationale cannot be applied to the components used in ITE, such as lasers/LEDs, where the standards for those components have a normative reference in the ITE standard? Richard Woods Sensormatic Electronics Tyco International -Original Message- From: John Woodgate [mailto:j...@jmwa.demon.co.uk] Sent: Wednesday, August 28, 2002 2:56 AM To: emc-p...@majordomo.ieee.org Subject: Re: IEC Guide 104 I read in !emc-pstc that richwo...@tycoint.com wrote (in 846BF526A205F8 4BA2B6045BBF7E9A6A04675652@flbocexu05) about 'IEC Guide 104' on Tue, 27 Aug 2002: EN 60825-1 is a normative reference in Annex ZA of EN 60950. Clause 1.1 of EN 60825-1 says: When a laser system forms part of equipment which is subject to another IEC product safety standard . . . this part 1 will apply in accordance with the provisions of IEC Guide 104, for hazards resulting from laser radiation. Clause 1.4.1 of EN 60950 says The requirements and tests detailed in this standard shall be applied only if safety is involved. If it is evident from the design and construction of the equipment that a particular test is not applicable, the test shall not be made. It appears that this clause can be extended to EN 60825-1. What does IEC Guide 104 say in this regard? If it is silent on this subject, do you agree that requirements and tests in EN60825-1 shall be applied only if safety is involved? Yes, but how could safety NOT be involved? Is your laser in a totally sealed, non-openable block? -- Regards, John Woodgate, OOO - Own Opinions Only. http://www.jmwa.demon.co.uk Interested in professional sound reinforcement and distribution? Then go to http://www.isce.org.uk PLEASE do NOT copy news posts to me by E-MAIL! --- This message is from the IEEE EMC Society Product Safety Technical Committee emc-pstc discussion list. Visit our web site at: http://www.ewh.ieee.org/soc/emcs/pstc/ To cancel your subscription, send mail to: majord...@ieee.org with the single line: unsubscribe emc-pstc For help, send mail to the list administrators: Ron Pickard: emc-p...@hypercom.com Dave Heald: 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
China MII Approval Experts
Group, Fact: You must be a Chinese registered company to sell telecom products in China. Question: Does a company need, to officially be a Chinese registered company prior to submitting the application to MII? If so, when can they file the application? Can you start testing your product at an MII lab before or while your registration is being processed? Your expertise and /or personal experiences are appreciated. Thanks, Jeffrey Collins Sr. HW Engineering Manager EMC/ NEBS/ Reliability/ Safety CIENA Core Switching Division 10480 Ridgeview Court, Cupertino, CA. 95014 (408) 366-4806, Fax (408) 366-4867 jcoll...@ciena.com http://www.ciena.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: IEC Guide 104
I read in !emc-pstc that richwo...@tycoint.com wrote (in 846BF526A205F8 4BA2B6045BBF7E9A6A04675652@flbocexu05) about 'IEC Guide 104' on Tue, 27 Aug 2002: EN 60825-1 is a normative reference in Annex ZA of EN 60950. Clause 1.1 of EN 60825-1 says: When a laser system forms part of equipment which is subject to another IEC product safety standard . . . this part 1 will apply in accordance with the provisions of IEC Guide 104, for hazards resulting from laser radiation. Clause 1.4.1 of EN 60950 says The requirements and tests detailed in this standard shall be applied only if safety is involved. If it is evident from the design and construction of the equipment that a particular test is not applicable, the test shall not be made. It appears that this clause can be extended to EN 60825-1. What does IEC Guide 104 say in this regard? If it is silent on this subject, do you agree that requirements and tests in EN60825-1 shall be applied only if safety is involved? Yes, but how could safety NOT be involved? Is your laser in a totally sealed, non-openable block? -- Regards, John Woodgate, OOO - Own Opinions Only. http://www.jmwa.demon.co.uk Interested in professional sound reinforcement and distribution? Then go to http://www.isce.org.uk PLEASE do NOT copy news posts to me by E-MAIL! --- This message is from the IEEE EMC Society Product Safety Technical Committee emc-pstc discussion list. Visit our web site at: http://www.ewh.ieee.org/soc/emcs/pstc/ To cancel your subscription, send mail to: majord...@ieee.org with the single line: unsubscribe emc-pstc For help, send mail to the list administrators: Ron Pickard: emc-p...@hypercom.com Dave Heald: 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: PFC or Harmonic Current Limitations outside Europe
I read in !emc-pstc that Jim Eichner jim.eich...@xantrex.com wrote (in 67C475A5ECE7D4118AEC0002B325CAB6017681D7@BCMAIL1) about 'PFC or Harmonic Current Limitations outside Europe' on Mon, 26 Aug 2002: Can anyone provide any information on the requirements for (or lack of) PFC or harmonic current limitation now or in the future, in the following areas: 1. Japan Japan has had a 'trial standard' for some years. It is not the same as IEC/EN 61000-3-2, but is based on it. It does not apply to everything, as the EN does. 2. North America (I think I've heard rumours) There is already IEEE 519. I think it is exceedingly unlikely that USA will adopt the present edition of IEC 61000-3-2, particularly since it doesn't claim to apply to 120V 60 Hz systems. 3. Australia / New Zealand I understand that the current edition of IEC 61000-3-2 is being studied, but the level of controversy over it makes adoption unlikely. -- Regards, John Woodgate, OOO - Own Opinions Only. http://www.jmwa.demon.co.uk Interested in professional sound reinforcement and distribution? Then go to http://www.isce.org.uk PLEASE do NOT copy news posts to me by E-MAIL! --- This message is from the IEEE EMC Society Product Safety Technical Committee emc-pstc discussion list. Visit our web site at: http://www.ewh.ieee.org/soc/emcs/pstc/ To cancel your subscription, send mail to: majord...@ieee.org with the single line: unsubscribe emc-pstc For help, send mail to the list administrators: Ron Pickard: emc-p...@hypercom.com Dave Heald: 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
