RE: Fw, Yahoo Groups Recommendation?: Changes to IEEE emc-pstc we b-based services...
Good People, In corporate America, the IT folks have become principal policy makers; they influence most high-level business decisions. Engineering groups cannot effect change to information security policy. And, with the advent of Windows 2000 becoming the common desktop OS, individual engineers may no longer (easily) configure their workstation software, or even install software. So spanking the net nanny is akin to attempting to discipline an angry 300 kg gorilla. Please note, that I will probably not be able to see many of your replies. I speak only for myself. R/S, Brian -Original Message- From: Brian Epstein [ mailto:brian.epst...@veeco.com] Sent: Thursday, March 13, 2003 11:59 AM To: 'Garnier, David S (MED)'; 'Guy Boone'; emc-p...@majordomo.ieee.org Subject: RE: Fw, Yahoo Groups Recommendation?: Changes to IEEE emc-pstc we b-based services... The problem isn't with Yahoo. You need to spank your net nanny. -Original Message- From: Garnier, David S (MED) [ mailto:david.garn...@med.ge.com] Sent: Thursday, March 13, 2003 9:54 AM To: 'Guy Boone'; emc-p...@majordomo.ieee.org Subject: RE: Fw, Yahoo Groups Recommendation?: Changes to IEEE emc-pstc we b-based services... Pardon me if this has been decided already but I think you need to be made aware of this. Our corporate net nanny has blocked access to all Yahoo accounts (and other free mail accounts) - moving the EMC listserve there would prevent access from anyone within the GE.COM domain. Our local IEEE EMC chapter is blocked, (all appeals for access have been ignored.) You might me asking yourself why should I care? (Dave could certainly subscribe to the listserve at home - ((please enable the digest mode.)) This company is a trendsetter and many others emulate our practices, your impending move may impact other subscribers in the future. David Garnier e GE Medical Systems ___ David S. Garnier Senior Technician
RE: Racing Car EMC
Peter, Don't forget the cell phones, and TV satellite and what ever other media links. Medical and other Emergency communications systems. Oscar Price, Ed ed.pr...@cubic.com@majordomo.ieee.org on 03/17/2003 10:18:03 AM Please respond to Price, Ed ed.pr...@cubic.com Sent by:owner-emc-p...@majordomo.ieee.org To:'Peter Conboy' peter.con...@piresearch.co.uk, 'emc-p...@majordomo.ieee.org' emc-p...@majordomo.ieee.org cc: Subject:RE: Racing Car EMC -Original Message- From: Peter Conboy [mailto:peter.con...@piresearch.co.uk] Sent: Monday, March 17, 2003 1:50 AM To: 'emc-p...@majordomo.ieee.org' Subject: Racing Car EMC Anyone out there got an opinion on what standards should be applied for the electronics fitted to racing cars - F1, CART, IRL etc.? Because of the environment, the need for absolute reliability, and the safety critical application (e.g. throttle, clutch, steering, chassis control) we take things seriously, but do not actually CE or e mark. The tests I do generally cover e and exceed most standards as actually I try and break the box rather than just go to the standards limit. I am having a bit of a debate inside my company, because 95/54/EC refers to only vehicles on rhe road, and racing cars are off road and therfore implies CE as a catch all This to me is wrong as patently its a vehicle, CE may be broader on the immunities, but is less severe on the radiated stuff. Given the self contained nature of the car, it is the radiated immunities I feel I should be most concerned with once I'm sure engine sourced interferences have been dealt with. Also CE and e are EU, whats the legal U.S. position? - I stress legal because the teams themselves don't care. Thanks Peter Peter: What kind of an RF environment does a race car experience? There's an audio link to the driver, a telemetry link for structural data, and possibly a video link for a car camera. And then all the similar links for the other cars. Does the car see any special exposures on the course (Doppler radar?) or in the pits (noisy service tools)? And, are there any unusual operational conditions, like running without a battery (saves weight, more ripple) or operation of heavy actuators or solenoids? Regards, Ed Ed Price ed.pr...@cubic.com Electromagnetic Compatibility Lab Cubic Defense Systems San Diego, CA USA 858-505-2780 (Voice) 858-505-1583 (Fax) Military Avionics EMC Is Our Specialty Shake-Bake-Shock - Metrology - Reliability Analysis 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 Archive is being moved, we will announce when it is back on-line. All emc-pstc postings are archived and searchable on the web at: http://www.ieeecommunities.org/emc-pstc 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 Archive is being moved, we will announce when it is back on-line. All emc-pstc postings are archived and searchable on the web at: http://www.ieeecommunities.org/emc-pstc
RE: Harsh Chemical Environments
Rich, What kind of equipment does your company design? I've used and found SEMI S2 as an excellent design guideline for many applications including harsh chemicals. In addition to SEMI S2, there are several other design guidelines they've published that cover many topics. SEMI was developed specifically for the Semiconductor industry but you still may find it helpful. I would start with SEMI S2 first and then look in the reference section for other related material. Their link: http://www.semi.org/ You also may want to look at some of the Mil spec's. Regards, Jeffrey Collins Sr. HW Engineering Manager EMC/ NEBS/ Reliability/ Safety CIENA Core Switching Division 5965 Silver Creek Valley Rd. San Jose, CA. 95138 (408) 571-3002, Fax (408) 965-2705 jcoll...@ciena.com http://www.ciena.com From: richwo...@tycoint.com [mailto:richwo...@tycoint.com] Sent: Monday, March 17, 2003 9:54 AM To: emc-p...@majordomo.ieee.org Subject: Harsh Chemical Environments Can anyone point me to guidance documents for designing electrical/electronic equipment for harsh chemical environments? Richard Woods Sensormatic Electronics Tyco International 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 Archive is being moved, we will announce when it is back on-line. All emc-pstc postings are archived and searchable on the web at: http://www.ieeecommunities.org/emc-pstc 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 Archive is being moved, we will announce when it is back on-line. All emc-pstc postings are archived and searchable on the web at: http://www.ieeecommunities.org/emc-pstc
Re: Harsh Chemical Environments
I read in !emc-pstc that richwo...@tycoint.com wrote (in 846BF526A205F8 4BA2B6045BBF7E9A6A04675DA8@flbocexu05) about 'Harsh Chemical Environments' on Mon, 17 Mar 2003: Can anyone point me to guidance documents for designing electrical/electronic equipment for harsh chemical environments? Basically, don't do it. Instead, create a sealed, benign environment within the harsh environment. You are very likely to find this solution quicker and more reliable than any other, even if the up-front cost is higher than another solution. For example, if you expect the equipment to be actually exposed to the environment, you need to know EXACTLY what is in that environment, how much of it and its potential effects on the hundreds of materials used in modern electrical equipment. -- 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 Archive is being moved, we will announce when it is back on-line. All emc-pstc postings are archived and searchable on the web at: http://www.ieeecommunities.org/emc-pstc
Harsh Chemical Environments
Can anyone point me to guidance documents for designing electrical/electronic equipment for harsh chemical environments? Richard Woods Sensormatic Electronics Tyco International 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 Archive is being moved, we will announce when it is back on-line. All emc-pstc postings are archived and searchable on the web at: http://www.ieeecommunities.org/emc-pstc
Re: Re_Re: flicker harmonics currents reduction
I read in !emc-pstc that Eurtronik Studioerre studioe...@eurtronik.it wrote (in 000e01c2ec85$2e1fb2b0$6401a8c0@Seinternet) about 'Re_Re: flicker harmonics currents reduction' on Mon, 17 Mar 2003: The power is 2K2W (pure resistive load). The steam cleaning machine falls into A class. I'm sure of that, because I have a flicker + harmonic currents measuring machine that gives me all answers needed, included current waveform. Well, it isn't necessarily Class A, no matter what your machine says. Isn't it a 'portable tool' as given in clause 5? If so, the Class B limits apply, but the product still won't meet them. I hope you have the latest edition of EN 61000-3-2. Look at Clause 7. The second dashed item is 'professional equipment with a total rated power greater than 1 kW'. Are you really going to sell the product to the general public through retailers or via the web? If you are, I don't think there is any solution except PFC. If in fact, the product is 'professional' as defined in clause 3.15, then no limits for harmonics apply. You must describe it as a 'product for use in trades, professions or industries' in the user's manual. -- 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 Archive is being moved, we will announce when it is back on-line. All emc-pstc postings are archived and searchable on the web at: http://www.ieeecommunities.org/emc-pstc
Re: Racing Car EMC
I read in !emc-pstc that Peter Conboy peter.con...@piresearch.co.uk wrote (in 3214c8857c03384d8b17b4fd89aa87242f0...@raven.pigroup.co.uk) about 'Racing Car EMC' on Mon, 17 Mar 2003: Anyone out there got an opinion on what standards should be applied for the electronics fitted to racing cars - F1, CART, IRL etc.? There are special concessions for these in several European countries, since clearly they can't be taken to a test house every time a modification is made. You probably need to ask the right person in the spectrum management authority in each country - the Radiocommunications Agency in UK. I suspect the concession is that if you don't violate Article 4 of the Directive, you are OK, BUT I DON'T KNOW THAT FOR SURE. -- 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 Archive is being moved, we will announce when it is back on-line. All emc-pstc postings are archived and searchable on the web at: http://www.ieeecommunities.org/emc-pstc
iDEN modulation
Does anyone have a good lead for techical information on iDEN modulation? Has anyone tried to modify the downloaded waveforms for the E4438C and change the arb waveform to a narrow instead of the wide b/w? Thanks in advance Hans Mellberg
Re_Re: flicker harmonics currents reduction
From: John Woodgate j...@jmwa.demon.co.uk To: emc-p...@majordomo.ieee.org Sent: Friday, March 14, 2003 3:15 PM Subject: Re: flicker harmonics currents reduction I read in !emc-pstc that Eurtronik Studioerre studioe...@eurtronik.it wrote (in 000201c2ea17$1d29a0d0$6401a8c0@Seinternet) about 'flicker harmonics currents reduction' on Fri, 14 Mar 2003: does anybody know a way to reduce flickering harmonics currents in order to meet EN 61000-3-2 EN 61000-3-3 in consumer electronics products? It can be easy or almost impossible, but if it's really impossible, there are special provisions to overcome that. Especially, I have a steam cleaning machine with phase-cut power control (similar to light dimmers) that doesn't want to meet the two standards together. The phase-cut control gives a lot of problems in harmonic currents, but goes well for the flicker. You don't give enough information. What is the power? Which Class of EN 61000-3-2 do you think the product falls into? The power is 2K2W (pure resistive load). The steam cleaning machine falls into A class. I'm sure of that, because I have a flicker + harmonic currents measuring machine that gives me all answers needed, included current waveform. On the other hand, switching the power on and off in a slow (seconds) duty cycle, goes well for the harmonic currents limits, but it creates an hard flicker problem! Yes. I know that introducing a Power Factor Corrector circuit helps so much in harmonic currents reduction, but this is very expensive It is indeed, and there MAY be no need. Please answer the questions above and then we'll see what can be done. -- Thanks a lot in advance for your interest. Many compliments for this dramatically intereresting forum-site, and sorry for my bad english. Federico Quadri Eurtronik Studioerre Srl Via Andrea Costa, 35 40013 Castelmaggiore (BO) T +39-051-703284 F +39-051-700904 e-mail studioe...@eurtronik.it 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 Archive is being moved, we will announce when it is back on-line. All emc-pstc postings are archived and searchable on the web at: http://www.ieeecommunities.org/emc-pstc 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 Archive is being moved, we will announce when it is back on-line. All emc-pstc postings are archived and searchable on the web at: http://www.ieeecommunities.org/emc-pstc
US Product Safety Standards
Dear Group, We manufacture gas monitoring equipment for process plant and lab use. Historically, before being marketed in the US the non hazardous area product versions have been submitted for electrical safety assessment under either UL 61010A-1 or FM3810. Can anyone advise me what the differences are (if any) between these two standards and also when one would be applied in preference to the other? Many thanks Ian Unwin Lead Engineer Servomex Group Limited 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. Communications using this system may also be monitored and may be recorded to secure effective operation and for other lawful business purposes. 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 Archive is being moved, we will announce when it is back on-line. All emc-pstc postings are archived and searchable on the web at: http://www.ieeecommunities.org/emc-pstc
