Safety Test
Good morning everyone ? I got a problem with the safety testing for personal computer(multimedia). I used to test against UL1950 for U.S.A., CSA950 for CANADA and EN60950 for Germany for personal computer(only installed video card). However, for the multimedia computer, is there any additional test or standard ? There are sound card, fax modem card and TV receiver card installed with remote controller.Is there anyone knows above matter ? Please let me know.Thank you ! chan lee l...@sam.sam.co.kr Courtesy of RCIC http://uc.com/compliance_engineering/
Re: ESD testing on exposed connector(2)
And if you decide to design product to survive zapped connector pins Motorola's dual switching diode MMBD7000LT1, SMT 3-pin clamping device can reduce direct hits to the managable levels. This useful device has maximum surge impedance of only 0.5 Ohms and maximum capacitance of only 1.5 pF. Mirko Matejic email: mmatejic@foxboro The Foxboro Company tel: (508) 549-3185 -- From: ron_well...@hp-paloalto-om4.om.hp.com List-Post: emc-pstc@listserv.ieee.org Date: Mon, 22 Apr 96 09:09:48 -0700 Subject: Re: ESD testing on exposed connector pins To: owner-emc-p...@majordomo.ieee.org, SIM::@msim.co.uk Cc: emc-p...@ieee.org Hello Alan, You assume two things: 1) test houses will zap connectors, and 2) all manufacturers use test houses for EMC Directive compliance In the United States most manufacturers self declare compliance to the EMC Directive unless they take the TCF route and work with a competent body. Do all manufacturers zap connectors? Your guess is as good as mine. Regards, Ron Wellman ++ |Ronald R. Wellman |Corporate Quality Department| |Hewlett-Packard Company|External Product Regulations| |Product Processes Organization |Voice : 415-857-6059| |1501 Page Mill Road, MS 5UL|FAX : 415-857-6340| |Palo Alto, California 94304 USA|E-Mail: well...@corp.hp.com | ++ | Common sense is the collection of prejudices acquired by | | age eighteen. - Albert Einstein | ++ Reply Separator Subject: Re: ESD testing on exposed connector pins Author: Non-HP-owner-emc-pstc (owner-emc-p...@majordomo.ieee.org) at HP-PaloAlto,shargw3 List-Post: emc-pstc@listserv.ieee.org Date:4/19/96 10:05 AM Recently Ron Wellman wrote: I believe that everyone contributing to this thread knows that zapping pins of exposed connector pins is almost always a guaranteed failure. Whether you fix it or not is a business decision, From a European point of view, I would have thought that if the test house did such a test (zapped the pins) and it failed, then you didn't get your Certificate of Conformity (or whatever), which means no CE Mark, which means no can sell, which is not much of a business decision !!! Or am I being simplistic (or even dense !)? Regards, Alan Hudson EMC/EW Specialist Marconi Simulation (Scotland, UK) email1 hud...@msim.co.uk email2 100534@compuserve.com
Re: EU 12-month administrative tolerance(?)
From everything relaible I have heard postponed enforcement of EMC Directive is only on many wish lists, not more than that. Mike or Ron, Please call Dave Imeson, EMC Manager, IBM UK Ltd., Chairman of Association of EU Competent Bodies, tel: +44 1962 818-097 and post his interpretations on pstc. Thanks, Mirko Matejic email: mmate...@foxboro.com The Foxboro Company tel: (508) 549-3185 --- From: ron_well...@hp-paloalto-om4.om.hp.com List-Post: emc-pstc@listserv.ieee.org Date: Thu, 25 Apr 96 11:46:24 -0700 Subject: Re: EU 12-month administrative tolerance To: owner-emc-p...@majordomo.ieee.org, r...@ms1.hinet.net Cc: emc-p...@ieee.org, m_sher...@delphi.com Hello Mike, From what I have heard, this applies only to the clearance of stocked products that were in the EU before January 1, 1996. However, this relaxation is not being accepted by all EU Member States. The UK might be one Member State that is allowing this. Regardless, products coming into the EU after January 1, 1996 are not subject to any relaxation from the EMC Directive. Regards, Ron Wellman ++ |Ronald R. Wellman |Corporate Quality Department| |Hewlett-Packard Company|External Product Regulations| |Product Processes Organization |Voice : 415-857-6059| |1501 Page Mill Road, MS 5UL|FAX : 415-857-6340| |Palo Alto, California 94304 USA|E-Mail: well...@corp.hp.com | ++ | Common sense is the collection of prejudices acquired by | | age eighteen. - Albert Einstein | ++ __ Reply Separator_ Subject: Re: EU 12-month administrative tolerance Author: Non-HP-owner-emc-pstc (owner-emc-p...@majordomo.ieee.org) at HP-PaloAlto,mimegw3 Date:4/25/96 5:10 AM On Wed, 24 Apr 1996 m_sher...@delphi.com wrote: Just read an article from the 4 April 1996 issue of the (London?) Financial Times that quotes a Dave Imeson, identified as EMC manager of IBM UK services, as saying that there has been an agreement among the EU member states to have a 12-month period of administrative tolerance re the EMC directive. maybe rather administrative delay due to lack of experience and testing facilities, but you should not count on a fixed period of 12 month Anybody know what Dave might be referring to? Mike Sherman Product Safety Engineer FSI International m_sher...@delphi.com
Re: US-EU MRA update(2)
Please correct the error in the invitation FROM: Wednesday, May 21 TO: Tuesday, May 21 Thanks, Mirko Matejic -- List-Post: emc-pstc@listserv.ieee.org Date: Wed, 24 Apr 1996 16:03:17 From: mmatejic (Mirko Matejic) To: emc-p...@ieee.org,t...@world.std.com Subject: US-EU MRA update You are invited to: OVERVIEW OF THE US-EU MRA NEGOTIATIONS FOR TELECOMMUNICATIONS presentation by Art Wall, FCC organized by IEEE EMC Society, Central New England Council on Wednesday, May 21, 1996, 6:30 p.m. at Parker Chomerics Facility, 77 Dragon Court, Woburn, Massachusetts. ...
Re: EU 12-month administrative tolerance
Hello Mike, If you can imagine the magnitude of the job of actually enforcing the EMC directive and handing out penalties it must be enormous. Therefore, the EU member states have undoubtedly decided to allow us manufacturers a grace period in which they will be enforcing the directive but with a soft hand. This is there way of saying We have no idea where to begin on enforcement proceedings or what rules apply to what products; therefore, lets take the first twelve months to figure the whole thing out. Just my thoughts - not really based in any fact. Ron Fotino __ Reply Separator _ Subject: EU 12-month administrative tolerance Author: m_sher...@delphi.com at !INTERNET List-Post: emc-pstc@listserv.ieee.org Date:4/24/96 9:11 PM Just read an article from the 4 April 1996 issue of the (London?) Financial Times that quotes a Dave Imeson, identified as EMC manager of IBM UK services, as saying that there has been an agreement among the EU member states to have a 12-month period of administrative tolerance re the EMC directive. Anybody know what Dave might be referring to? Mike Sherman Product Safety Engineer FSI International m_sher...@delphi.com
Re: FCC 47 CFR Indust Equip
Section 15.103(b) CFR 47 (Exempted devices) exempts A digital device used exclusively as an electronic control or power system ... in an industrial plant from complying with the technical requirements of Subpart B. This means you don't have to do any testing and you do not need to label your product. You are however still subject to Part 15, specifically section 15.5 which requires you to correct any interference to licensed radio transmissions that your product causes in the field. Also, under section 15.29 you will need to comply with any commission request to evaluate your product (extremely unlikely, bordering on winning the lottery without betting). The legal issues aside, you may still wish to test your products for marketing reasons. You may find compliance with the FCC limits to be a selling feature for your equipment. If you are meeting the European requirements, compliance with the FCC limits should be almost automatic, in fact the same test data can usually used to show compliance with both the FCC and European specs. Finally, the FCC reevaluates the exemptions on about a ten year cycle. Right now they recommend that your class of products comply with the technical requirements. Someday the FCC might extend coverage to your equipment. Jon D. Curtis, P.E. Director of Engineering email: j...@world.std.com Curtis-Straus LLCphone: (508) 263-1897 409 Massachusetts Avenue fax:(508) 263-4164 Acton, MA 01720 http://world.std.com/~jdc/ USA On Wed, 24 Apr 1996 m_sher...@delphi.com wrote: We're a manufacturer of industrial equipment. The equipment goes into what the European EMC directive would classify as a heavy industrial environment. We use a lot of electronics--PCs, PLCs, sensors, etc--in our controls that are built into this equipment. Question: do we have to comply with the FCC regs, Title 47 CFR 15, subpart A (b), as an unintentional radiator? thanks! Mike Sherman Product Safety Engineer FSI International (612) 361-8140 m_sher...@delphi.com
Re: EU 12-month administrative tolerance
On Wed, 24 Apr 1996 m_sher...@delphi.com wrote: Just read an article from the 4 April 1996 issue of the (London?) Financial Times that quotes a Dave Imeson, identified as EMC manager of IBM UK services, as saying that there has been an agreement among the EU member states to have a 12-month period of administrative tolerance re the EMC directive. maybe rather administrative delay due to lack of experience and testing facilities, but you should not count on a fixed period of 12 month. Anybody know what Dave might be referring to? Mike Sherman Product Safety Engineer FSI International m_sher...@delphi.com
Acceleration factor.
A colleague of mine has asked the following question about acceleration factors. I know it doesn't fit this forum but with all the great knowledge found here I expect someone may be able to provide a lead if not an answer. Question: Do you know where I can find a qualitative acceleration factor for the combination of testing and humidity highly accelerated testing for DI water-generated humidity on exposed copper traces of PC boards, similar to the Arhenius equation for acceleration of failure versus temperature. ? Please reply directly to : paul.d.ander...@scismail.sci.com or to the writer. Thank you Leo Heiland
