Employment opportunity
Are you searching for an exciting employment opportunity? Curtis-Straus, an Electronics Testing Laboratory in Littleton, MA is looking for EMC engineers to staff our test and design laboratory. Curtis-Straus LLC is the fastest growing testing laboratory in New England! We offer an entrepreneurial environment with unlimited growth opportunities. Curtis-Straus specializes in Electromagnetic Compatibility and Electromagnetic Interference (EMC/EMI) testing, NEBS testing, Product Safety testing and Telecommunications testing. Our ideal candidate will possess the following skills and qualities: Strong Technical Skills Talent for Solving Technical Challenges Strong Written and Verbal Communications Skills Must Enjoy Daily Client and Team Member Interaction Desire to Learn If you are looking for an opportunity to establish yourself as a future leader in a growing company, this may be your opportunity. Please forward or email your resume to: j...@curtis-straus.com Curtis-Straus LLC Attn: Dept. H 527 Great Road Littleton, MA 01460 -- Jon D. Curtis, P.E. Director of Engineering Curtis-Straus LLC One Stop Laboratory for EMC, Product Safety, and Telecom Testing. 527 Great Road Littleton, MA 01460 USA Voice 978-486-8880 Fax 978-486-8828 email: jcur...@curtis-straus.com WWW.CURTIS-STRAUS.COM --- This message is from the IEEE EMC Society Product Safety Technical Committee emc-pstc discussion list. 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: Jim Bacher: jim_bac...@mail.monarch.com Michael Garretson:pstc_ad...@garretson.org For policy questions, send mail to: Richard Nute: ri...@ieee.org
Notified Body Numbers
How many characters are there in a Notified Body number? I am laying out a label and want to make sure I allow sufficient room for the maximum number of characters. Richard Woods --- This message is from the IEEE EMC Society Product Safety Technical Committee emc-pstc discussion list. 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: Jim Bacher: jim_bac...@mail.monarch.com Michael Garretson:pstc_ad...@garretson.org For policy questions, send mail to: Richard Nute: ri...@ieee.org
GPSD Discussion
Several comments were made relative to the evolving General Product Safety Directive (92/59/EEC) and CE marking that may have given an inaccurate view. Here is my understanding: The EU now requires CE marking on a broad variety of imported products as a condition of entering the EU. The display of the CE marking means that the product complies with all applicable EU Directives for that product. The required EU Declaration of Conformity (DoC) for each CE marked product states the Directives to which the product conforms, and often the standards or method by which conformity was verified. As a result of the above, you can find the CE marking on household kitchen appliances, electric razors, stuffed animals, etc. In other words, CE is not just for electrical equipment. The GPSD appears to be aimed at many consumer products for which there is now no specific Directive or EU legislation. However, since this 1992 Directive is not well understood by even members of the EU, recent Commission discussions are with the intent of clarifying this Directive, possibly replacing it with a new version. Although no specific product examples are cited, there are references to food products. There are also references to the following Union death rates in 1996: workplace deaths6000 traffic accidents 45000 home and leisure accidents 83000 This explains the emphasis on consumer products and services. Although the langauge sounds like it was written by a committee of lawyers, I think it implies that where products conform to existing product safety Directives/legislation, the GPSD does not apply. These are merely my opinions on a very complex document George Alspaugh --- This message is from the IEEE EMC Society Product Safety Technical Committee emc-pstc discussion list. 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: Jim Bacher: jim_bac...@mail.monarch.com Michael Garretson:pstc_ad...@garretson.org For policy questions, send mail to: Richard Nute: ri...@ieee.org
RE: energy hazards - 61010
Hi John: You can also look at Annex F (F.2) for power levels and the resultant requirements if your circuit is Unlimited. Also don't overlook 6.3.2, values in single fault conditions, and you may be particularly interested in 6.3.2.3. A minor point, note that there is no definition for SELV in 61010, voltages are hazardous, or not. Richard Payne Tektronix, Inc. Product Safety Engineering Ph: (503) 627-1820 Fax: (503) 627-3838 email: richard.pa...@tektronix.com -Original Message- From: Fee John [mailto:f...@netc.ie] Sent: Tuesday, April 04, 2000 9:34 AM To: Pstc (E-mail) Subject: energy hazards Hi I have been searching through IEC 61010 for any requirements relating to energy hazards for accessible terminals, similar to those of IEC 60950 which have a limit of 240 VA and 20 J available energy. The only reference i can find in 61010 relates to electric shock in that clause 6.3.1 limits available energy to 45 uC where SELV limits for voltage and current are not met. This circuit does meet SELV voltage limits so this requirement doesnt apply. Can anyone point me to a reference in 61010 for energy hazards? Thanks John Fee NETC, Enterprise Ireland Glasnevin, Dublin 9 Ireland Phone +353 1 8082214 Fax +353 1 8370705 E-mail f...@netc.ie --- This message is from the IEEE EMC Society Product Safety Technical Committee emc-pstc discussion list. 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: Jim Bacher: jim_bac...@mail.monarch.com Michael Garretson:pstc_ad...@garretson.org For policy questions, send mail to: Richard Nute: ri...@ieee.org --- This message is from the IEEE EMC Society Product Safety Technical Committee emc-pstc discussion list. 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: Jim Bacher: jim_bac...@mail.monarch.com Michael Garretson:pstc_ad...@garretson.org For policy questions, send mail to: Richard Nute: ri...@ieee.org
RE: VDE0800
BSI has translations of many of the VDE standards. VDE also has some in English. Check both web sites. Richard Woods -- From: Guy Barange [SMTP:gbara...@newbridge.com] Sent: Tuesday, April 04, 2000 12:33 PM To: emc-p...@majordomo.ieee.org Subject: VDE0800 Bonsoir, I am looking to the Safety Standards DIN VDE 0800, does somebody know where I can find it? Thanks in advance Guy barangeFile: gbarange.vcf --- This message is from the IEEE EMC Society Product Safety Technical Committee emc-pstc discussion list. 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: Jim Bacher: jim_bac...@mail.monarch.com Michael Garretson:pstc_ad...@garretson.org For policy questions, send mail to: Richard Nute: ri...@ieee.org
energy hazards
Hi I have been searching through IEC 61010 for any requirements relating to energy hazards for accessible terminals, similar to those of IEC 60950 which have a limit of 240 VA and 20 J available energy. The only reference i can find in 61010 relates to electric shock in that clause 6.3.1 limits available energy to 45 uC where SELV limits for voltage and current are not met. This circuit does meet SELV voltage limits so this requirement doesnt apply. Can anyone point me to a reference in 61010 for energy hazards? Thanks John Fee NETC, Enterprise Ireland Glasnevin, Dublin 9 Ireland Phone +353 1 8082214 Fax +353 1 8370705 E-mail f...@netc.ie --- This message is from the IEEE EMC Society Product Safety Technical Committee emc-pstc discussion list. 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: Jim Bacher: jim_bac...@mail.monarch.com Michael Garretson:pstc_ad...@garretson.org For policy questions, send mail to: Richard Nute: ri...@ieee.org
VDE0800
Bonsoir, I am looking to the Safety Standards DIN VDE 0800, does somebody know where I can find it? Thanks in advance Guy barange attachment: gbarange.vcf
Waste Directive/Lab Equipment
Annex 1A and 1B of the Second Draft of the Proposal for a Directive on Waste from Electrical and Electronic Equipment specifies categories and examples of equipment that is covered by the Directive. In the section for Medical Equipment Systems it specifies Laboratory equipment for in-vitro diagnostics, yet does not just specify Laboratory Equipment. Why are they so specific to spell out in-vitro diagnostics? Does this imply that they are not concerned about general laboratory equipment? Does anyone know their intent? All responses are appreciated. regards Joe Martin P.E. Biosystems marti...@pebio.com --- This message is from the IEEE EMC Society Product Safety Technical Committee emc-pstc discussion list. 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: Jim Bacher: jim_bac...@mail.monarch.com Michael Garretson:pstc_ad...@garretson.org For policy questions, send mail to: Richard Nute: ri...@ieee.org
Re: Fwd:information regarding electromagnetic compatibility
Evangelos Tonas wrote an article EM Shielding Effectiveness of Low-cost Architectural Shielding Materials that appeared in the 1997 ITEM. This article is available on the web at http://www.rbitem.com/ITEM_Publications/ITEM_Archives/I97art19.htm Table 1 shows that chicken wire can achieve: * 35 to 48dB shielding against electric fields (E-fields) from 10kHz to 10MHz. * 25 to 33 dB shielding against plane-wave fields from 40MHz to 400MHz. John Barnes --- This message is from the IEEE EMC Society Product Safety Technical Committee emc-pstc discussion list. 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: Jim Bacher: jim_bac...@mail.monarch.com Michael Garretson:pstc_ad...@garretson.org For policy questions, send mail to: Richard Nute: ri...@ieee.org
Re: Fwd:information regarding electromagnetic compatibility
Gerald, R. Kenneth Keenan's book Digital Design for Interference Specifications (Vienna, Virginia: The Keenan Corporation, 1983) has some excellent advice for doing developmental tests in chapter 6. He tells: * How to do basic emissions tests using: - An AM broadcast receiver. - An FM broadcast. - Or an inexpensive wide-band receiver. * How to make basic test accessories such as a: - Line-Impedance Stabilization Network (LISN) for conducted emissions testing. - Rotating folded-dipole antenna for radiated emissions testing. The techniques/equipment that he describes will let you do *comparative* measurements. If you have a problem because of ambients (radio, TV, pagers, police/fire/emergency radio systems) you can easily build a simple shielded room out of wood strips and chicken wire, being sure to overlap every seam by several inches to provide good electrical contact and waveguide-below-cutoff effects. You can reduce problems with standing waves by building the walls and ceiling so that they are not parallel to one another-- a couple degrees off square will probably be enough. If you always put the device-under-test (DUT), the antenna and receiver, and yourself (use chalk or tape to mark the position of your feet for making measurements) in close to the same positions you can get some pretty decent semi-quantitative measurements using this type of shielded room, for a very small investment in materials and time. John Barnes Advisory Engineer Lexmark International author of Electronic System Design: Interference and Noise Control Techniques (Prentice-Hall, 1987) --- This message is from the IEEE EMC Society Product Safety Technical Committee emc-pstc discussion list. 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: Jim Bacher: jim_bac...@mail.monarch.com Michael Garretson:pstc_ad...@garretson.org For policy questions, send mail to: Richard Nute: ri...@ieee.org
Link to China
Hello All I used to have a good link to information about importing goods into China. It was http://www.cyberway-to-china.com/ccib The address is however claimed unknown from the network (has no DNS entry). Does anybody know where it's information has gone to? This very good link hold some of the information: http://www.ccibkor.com/company/e_company.htm but the missing link holds the official First Catalogue and Second Catalogue, telling which organisation has to give approval to what products. Regards Vagn Sylvest DELTA --- This message is from the IEEE EMC Society Product Safety Technical Committee emc-pstc discussion list. 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: Jim Bacher: jim_bac...@mail.monarch.com Michael Garretson:pstc_ad...@garretson.org For policy questions, send mail to: Richard Nute: ri...@ieee.org
Re: Mars lander problem
It's only software!! Seems like the report from the JPL Special Review Board on the Loss of the Mars Polar Lander blames the software! They clearly state (section 7.7.2 in pdf file #4) that The touchdown sensors characteristically generate a false momentary signal at leg deployment. This behavior was understood and the flight software was required to ignore these events, however, the requirement did not specifically describe these events, and consequently, the software designers did not properly account for them. Thus it seems like a project communication problem. Not unusual in my past experience! Although, like someone said, that's a 'management' problem. Someone, probably the Project leader/Engineer should have made sure that there was appropriate hardware/software team communication. Someone else said Lack of testing When I was responsible for product design (quite a while ago!) that was my main emphases--test, test then test again! Also, we tried to use independent test persons-not the designers! However, testing a small electronic remote control system is a lot easier and far lest costly than testing a Mars Lander, although the lack of good testing was also far less consequential! If I remember correctly, the failure of the initial Hubble mirror could also have been caught if expensive testing had been approved! In summary, this Mars Lander experience just reinforces for me, that although projects can and should be organized so that detailed reviews amongst the designers are a regular occurrence, there really is no substitute for thorough testing! But I guess, EMC engineers already know that! Tony Colorado. --- This message is from the IEEE EMC Society Product Safety Technical Committee emc-pstc discussion list. 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: Jim Bacher: jim_bac...@mail.monarch.com Michael Garretson:pstc_ad...@garretson.org For policy questions, send mail to: Richard Nute: ri...@ieee.org
