RE: DC Power entry
Bob, As you say, IEC 320 connectors are intended to be used for supplying ac mains power. Personally I would never advocate using a mains connector to supply 48 or 60 Vdc. There is a good chance that at some time in the product's life someone somewhere will plug the equipment into a 'handy' connector that has the other end plugged into the ac mains supply. Maybe your product would remain safe when powered with 230 Vac rather than 48 V dc, maybe not. You have not said what the input current is, but if you are looking at an IEC 320 type then I presume that it is in the 5 -15 A range. In this case a 'power D type' would seem to be a reasonable bet. Many telecos have their own preferred connector: hard wiring is common too. Regards, Richard Hughes p.s. Naturally, if you construed any of the above to be an opinion of any know living being, or corporate body, or anything else, you would be entirely wrong.
Re: DC Power entry
Hi Bob. You wrote: Does anyone know any reason why the IEC 320 C-14 connector style cannot be used for DC power? Specifically, we have an application for primary power entry in the 48-70 Vdc range, typical of telecom applications, and I see no clear reason for redesign to implement a different connector. It is commonly used for 100-250 Vac and 50-60 Hz. However, does common usage exclude it from other similar applications? Are ther code restrictions somewhere which would interfere with it? The connectors are typically marked with an ac rating, but I would expect approval in the application would be achievable, at least for the electrical characteristics. I suppose someone would gripe about its conventionality. I've always come up against IEC 1010 clause 6.10.3.(b) which seems to cover ambiguous connectors. Regarding alternatives, is there a typical appliance connector used in the telecom industry for this DC power distribution? The only common thread that I've noticed is the use of Molex type mulipole connectors (e.g. FCI Qikmate) for d.c. supplies, often used on both the supply itself and the associated equipment. Thats a couple of Euro's worth... Chris Dupres EMC Specialist. VG Microtech. cdup...@vgmicrotech.com tel +44 (0) 1825 761077 fax +44 (0) 1825 768343 'Opinions expressed are personal, not necessarily Corporate'
EMC Seminars
Does any know of any good EMC Seminars? Not just a seminar but one where I could actually learn something. Any help would be greatly appreciated. Thanks. Bill Burks
Spare Parts
Dear PSTC Net: Here's a few questions regarding spare parts: (1) Are there any standards (governmental or industry) that deal with the minimum amount of time that spare parts should be made available? (2) Is the length of time to keep spare parts affected or determined by the type of equipment being considered (ITE, Medical, Industrial)? (3) Are there any other factors that affect time to keep spare parts (i.e. x years after discontinuing a product, etc.)? Any info would be appreciated. Thanks, Ken Shadoff kshad...@cusa.canon.com
Registration
To whom it may concern: Please indicate how I may register for your newsgroup, at your earliest convenience. Best regards, Dave Wilson InterConnect Communications Ltd Tel: +44 (0) 1291 620425 Fax: +44 (0) 1291 627119 WWW: http://www.icc-uk.com/
Re: HELP: EMI - CFR 47 Exemption for Machine Controls ?
Check 47 CFR part 2 sections 803, 805, 806, 807 and 809. Essentially if your ISM equipment is classified as a radio frequency device or digital device and not selling to the US goverment you must comply with the technical requirements of part 15, or part 18. Part 18 section 121 allows for exemptions for certain ultrasound and MRI equipment. Other than that, I'm certain you have to comply! Best Regards, Hans Mellberg __ Reply Separator _ Subject: HELP: EMI - CFR 47 Exemption for Machine Controls ? Author: Non-HP-owner-emc-pstc (owner-emc-p...@majordomo.ieee.org) at HP-Boise,mimegw2 Date:01/06/97 04:33 AM Dear Compliance Collegues CFR47 sets emission limits for digital devices. As far as I know there is or there was an exemption for machine controls, i.e. there are no emission limits for industrial machines ( I am not referring to ISM as defined by 47CFR18) I can not find this exemption in the 1993 edition of the CFR 47. Can anybody point me the ºº of CFR where this exemptions or was mentioned ? Thanks in advance George * Dr. Georg M. Dancau* HAUNI MASCHINENBAU AG * * g.m.dan...@ieee.org* EMC Lab * * TEL: +49 40 7250 2102 * Kampchaussee 8..32 * * FAX: +49 40 7250 3801 * 21033 Hamburg, Germany * * home: Tel: +49 40 738 51 07* Lohbruegger Landstr. 82 * * Fax: +49 40 730 11 99* 21031 Hamburg, Germany *
Need help on this one ...
Trying to decode an e-mail from a former associate of mine. --- START OF MESSAGE --- What is a CCITT requirement? What other requirements are to be met for agency approval based on the information provided below?: The Power Supply is required to either a 110 VAC or a 220 VAC input. The Ac input supply should be a power factor corrected (PFC) design with a continuous operating range of 90 to 265 VAC at 47 to 63 Hz. --- END OF MESSAGE --- 1. As far as I knew, CCITT (Consultative Committee on Interantional Telegraphy and Telephony, part of the ITU) imposed nothing. They are a standards body the can only recommend. Their standards are adopted by different countries. 2. This sounds like a 555 power spec for power supplies not for ITE, i.e. not for 950. That is to say, he must make sure that his power vendor gets this approval. Someone out there correct or educate? *** --- The comments and opinions stated herein are mine alone, and do not reflect those of my employer. --- ***
Re: Laser product information
Rich, Check the home page of CDRH on the Web: www.fda.gov/cdrh/index.html Regards, Frank Dominguez frank_doming...@hp.com __ Reply Separator _ Subject: Laser product information Author: Non-HP-owner-emc-pstc (owner-emc-p...@majordomo.ieee.org) at HP-PaloAlto,shargw3 List-Post: emc-pstc@listserv.ieee.org Date:1/3/97 12:27 PM Hello all, Way back when, there was some discussion on laser products classifications. Right now, we are new to the use of lasers and their regulations. I have some basic knowledge of the regulations, due to long ago testing of them, and my gray matter is not what it used to be. I would appreciate some assistance in the following: 1) Where do I get the latest copy of the CDRH report? Name, contact, address, tel., etc. 2) Filing procedures. I suspect it will be in the CDRH report that must be filled out. As I remember it, it was every year and I had to note the vendors model name, quantity and what product we were using the laser for. 3) Labeling format will be in 21 CFR section 1040 4) Any European document detailing who tests the laser for proper usage/application in a larger product, labeling requirements (multiple language) Any addition information would be most appreciated, as it is sometimes difficult to ask the right questions. Richard Georgerian Product Compliance Eng. Exabyte tel.: 303-417-7537 fax: 303-417-7829 e-mail: richa...@exabyte.com
re: FCC Class A Label?
Hi, For unintentional radiators, the FCC requires only verification. That is, one has the product type tested at an approved lab and keeps the data reports on file to verify that the product meets the Class A limits. Those verification reports must be produced if authorities need to see them. There is no declaration required, but the product has the marketing and labelling requirements specified in CFR 47. There are required statements in the user guide as well. This is actually a little easier than the D of C. Regards, tony_fredriks...@netpower.com -- From: GRASSO%STKWWHDQ To: emc-pstc Subject: re: FCC Class A Label? List-Post: emc-pstc@listserv.ieee.org Date: Monday, January 06, 1997 12:00AM Let me see if I understand this correctly.. The FCC in an attempt to speed up the Class B cert process introduced the DoC process. Can Class A equipment use the same process? --( Forwarded letter 1 follows )- X-Router: (TAO/SMTP Gateway 1.1.34) emc2m...@ccsvm.stortek.com Received: from stortek.com by CCSVM.STORTEK.COM (IBM VM SMTP V2R3) with TCP; Thu, 02 Jan 97 12:32:14 MST Received: from ruebert.ieee.org by stortek.com with SMTP id AA20970 (5.65c/IDA-1.4.4); Thu, 2 Jan 1997 12:32:16 -0700 Received: (from daemon@localhost) by ruebert.ieee.org (8.7.5/8.7.3) id NAA24680 for emc-pstc-list; Thu, 2 Jan 1997 13:08:42 -0500 (EST) Message-Id: n1359922992.47...@sledgehammer.com List-Post: emc-pstc@listserv.ieee.org Date: 2 Jan 1997 10:04:01 -0800 From: Steve Chin sc...@sledgehammer.com.smtp Subject: Re: FCC Class A Label? To: emc-p...@ieee.org X-Mailer: Mail*Link SMTP-QM 3.0.2 Sender: owner-emc-p...@majordomo.ieee.org.smtp Precedence: bulk Reply-To: Steve Chin sc...@sledgehammer.com.smtp X-Resent-To: Multiple Recipients emc-p...@majordomo.ieee.org X-Listname: emc-pstc X-List-Description: Product Safety Tech. Committee, EMC Society X-Info: Help requests to emc-pstc-requ...@majordomo.ieee.org X-Info: [Un]Subscribe requests to majord...@majordomo.ieee.org X-Moderator-Address: emc-pstc-appro...@majordomo.ieee.org Lets not forget about the new FCC DoC process. You can declare conformity to the FCC limits (either class A or class B) if you are testing at an approved site with uses approved testing practices. If you use the route of declaration, a proper FCC DoC label must be applied. Steve Chin StreamLogic Corp. Menlo Park, CA, USA sc...@sledgehammer.com The views expressed in this transmission in no way intentionally reflect those of any being, be it living, dead, corporate, governmental, inanimate, etc. They are mine alone. -- List-Post: emc-pstc@listserv.ieee.org Date: 12/31/96 3:03 PM To: Steve Chin From: Eric Lifsey Jon Bertrand asks if FCC Class A devices require a label. Yes, is the short answer. Class A devices are subject to VERIFICATION, while Class B devices require (in nearly all cases) CERTIFICATION.
Requirements for South Africa
Does anyone out there have any information on the EMC and safety requirements for products to be sold in South Africa? From the limited information I have been able to find it appears that the EMI requirements are based on CISPR 22 (no surprise). But are there agency approval/certification requirements for either EMI and Safety? Any information provided would be greatly appreciated. Craig Hensley Iomega Corp. Roy, UT
Job Opening
I know some may view this as an advertisement, but the EMC-PSTC Charter and Guidelines (dated March 10, 1995) allow for the posting of job openings. Thanks. I am seeking an experienced Product Safety Engineer to oversee our domestic/international safety program. We need someone with medical device experience and ETL Facts and CSA Catagory program certified (or certifiable). Candidates must have strong laboratory skills, work well with design engineers and be willing to travel. Oh yea...you must also enjoy living in the beautiful Pacific Northwest. Please drop me a email or call me directly at (206) 882-3913 if you are interested. Russ Garrison, Director Regulatory Affairs, SpaceLabs Medical Inc. (email russg...@aol.com) *check out our Web Site at http://www.spacelabs.com
Laser information - Many thanks for your responses
To All, I appreciate to all those who have responded to my query on obtaining laser information. Each lead has been, in process or will be, investigated regarding the use of a laser product or system. Hopefully, in the near future, I'll send over the net our experiences and information in a nice package, so the next poor soul does not have to fumble through it all. Many thanks again. Richard Georgerian Product Compliance Eng. Exabyte tel.: 303-417-7537 fax: 303-417-7829 e-mail: richa...@exabyte.com
Re: HELP: EMI - CFR 47 Exemption for Machine Controls ?
Georg, I believe in the FCC book 47 CFR Sec. 15.103, titled Exempted devices is what you are looking for. Richard Georgerian Product Compliance Eng. Exabyte tel.: 303-417-7537 fax: 303-417-7829 e-mail: richa...@exabyte.com __ Reply Separator _ Subject: HELP: EMI - CFR 47 Exemption for Machine Controls ? Author: Georg M. Dancau 100536.2...@compuserve.com at UNIXMAIL List-Post: emc-pstc@listserv.ieee.org Date:1/7/97 4:57 AM Dear Compliance Collegues CFR47 sets emission limits for digital devices. As far as I know there is or there was an exemption for machine controls, i.e. there are no emission limits for industrial machines ( I am not referring to ISM as defined by 47CFR18) I can not find this exemption in the 1993 edition of the CFR 47. Can anybody point me the §§ of CFR where this exemptions or was mentioned ? Thanks in advance George * Dr. Georg M. Dancau* HAUNI MASCHINENBAU AG * * g.m.dan...@ieee.org* EMC Lab * * TEL: +49 40 7250 2102 * Kampchaussee 8..32 * * FAX: +49 40 7250 3801 * 21033 Hamburg, Germany * * home: Tel: +49 40 738 51 07* Lohbruegger Landstr. 82 * * Fax: +49 40 730 11 99* 21031 Hamburg, Germany *
MIL STD 810E ??
Dear EMC-PSTC Members, Who can shed some light on the MIL STD 810E and a so called 516.4 requirement? What is it about, especially what does the 516.4 requirement mean? Are IT Products in the scope of this Military Standard? If yes, to which degree? Many Thanks! Regards, Paris Dieker - Compaq Computer EMEA GmbH, Munich Environmental Agency Compliance Phone: +49.89.9933 -2332 / Fax: -2336 Internet: pdie...@bangate.eur.compaq.com
Korea Requirements
Hello Everyone, Does anyone have information concerning approval to Korea, ie. EMC, SAFETY and TELECOM(analog)? I am primarily looking for Agencies and Standards. Will Korea accept European CE stuff (safety/emi)? Thanks in advance for your help, Regards Bill Pedersen GENTNER COMMUNICATIONS CORP. E-mail wpede...@gentner.com
Re: LOW COST equipment for EMC.
Hi, Gabriel Roy/HNS wrote: For REALLY low cost test equipment for use during the developmental stage, refer to Dr. Keenan's book Digital Design for Interference Specification Section 6.3. ...snip... Dr. Keenan's book is published by TKC in florida, (813) 544-2594 Also on http:/www.tkcemi.com/publicat.html Thanks for info Gabriel, -- Paul Rampelbergh Wezembeek-Oppem (Belgium) -
re: FCC Class A Label?
Class A equipment has pretty much always been a self declaration process, not requiring FCC certification, i.e. verification testing. From: GRASSO%STKWWHDQ%ccsvm.stortek.com List-Post: emc-pstc@listserv.ieee.org Date: 01/07/97 02:32:32 PM Subject: re: FCC Class A Label? Let me see if I understand this correctly.. The FCC in an attempt to speed up the Class B cert process introduced the DoC process. Can Class A equipment use the same process? Reply-To: Steve Chin sc...@sledgehammer.com.smtp X-Resent-To: Multiple Recipients emc-p...@majordomo.ieee.org X-Listname: emc-pstc X-List-Description: Product Safety Tech. Committee, EMC Society X-Info: Help requests to emc-pstc-requ...@majordomo.ieee.org X-Info: [Un]Subscribe requests to majord...@majordomo.ieee.org X-Moderator-Address: emc-pstc-appro...@majordomo.ieee.org Lets not forget about the new FCC DoC process. You can declare conformity to the FCC limits (either class A or class B) if you are testing at an approved site with uses approved testing practices. If you use the route of declaration, a proper FCC DoC label must be applied. Steve Chin StreamLogic Corp. Menlo Park, CA, USA sc...@sledgehammer.com The views expressed in this transmission in no way intentionally reflect those of any being, be it living, dead, corporate, governmental, inanimate, etc. They are mine alone. -- List-Post: emc-pstc@listserv.ieee.org Date: 12/31/96 3:03 PM To: Steve Chin From: Eric Lifsey Jon Bertrand asks if FCC Class A devices require a label. Yes, is the short answer. Class A devices are subject to VERIFICATION, while Class B devices require (in nearly all cases) CERTIFICATION.
re: FCC Class A Label?
The DoC procedure was implemented to speed class B computers and their peripherals to market. The DoC is a self-certification procedure, i.e., no submission of data or fees to FCC, as was required in almost all cases for class B home computer/peripheral equipment prior to DoC rules. Class A *never* has required submission to FCC, so a class A DoC does not compute, so to speak. FCC class A compliance is and has always been under the Verification program, itself a self-certification or scout's honor type procedure. Hope this helps. Labelling issues always seem to be in the top 3 categories of faqs. Tom Cokenias RFI/EMC Consultant
Re: HELP: EMI - CFR 47 Exemption for Machine Controls ?
Dear George, Look in 47 CFR 15.103 Exempted Devices. You are refering to section (b) exempted from the technical requirements of part 15 are digital devices used exclusively as an electronic control or power system utilized by a public utility or in an industrial plant... Jon D. Curtis, PE Curtis-Straus LLC j...@world.std.com One-Stop Laboratory for EMC, Product Safety and Telecom 527 Great Roadvoice (508) 486-8880 Littleton, MA 01460 fax (508) 486-8828 http://world.std.com/~csweb On Tue, 7 Jan 1997 hans_mellb...@non-hp-santaclara-om4.om.hp.com wrote: Check 47 CFR part 2 sections 803, 805, 806, 807 and 809. Essentially if your ISM equipment is classified as a radio frequency device or digital device and not selling to the US goverment you must comply with the technical requirements of part 15, or part 18. Part 18 section 121 allows for exemptions for certain ultrasound and MRI equipment. Other than that, I'm certain you have to comply! Best Regards, Hans Mellberg __ Reply Separator _ Subject: HELP: EMI - CFR 47 Exemption for Machine Controls ? Author: Non-HP-owner-emc-pstc (owner-emc-p...@majordomo.ieee.org) at HP-Boise,mimegw2 List-Post: emc-pstc@listserv.ieee.org Date:01/06/97 04:33 AM Dear Compliance Collegues CFR47 sets emission limits for digital devices. As far as I know there is or there was an exemption for machine controls, i.e. there are no emission limits for industrial machines ( I am not referring to ISM as defined by 47CFR18) I can not find this exemption in the 1993 edition of the CFR 47. Can anybody point me the ºº of CFR where this exemptions or was mentioned ? Thanks in advance George * Dr. Georg M. Dancau* HAUNI MASCHINENBAU AG * * g.m.dan...@ieee.org* EMC Lab * * TEL: +49 40 7250 2102 * Kampchaussee 8..32 * * FAX: +49 40 7250 3801 * 21033 Hamburg, Germany * * home: Tel: +49 40 738 51 07* Lohbruegger Landstr. 82 * * Fax: +49 40 730 11 99* 21031 Hamburg, Germany *
Source for 120 ohm E1 cable?
I am looking for a manufacturer of cable suitable for carrying the European 120 ohm E1 (CEPT1) signal (2 or 3 twisted pairs). It should be UL/CSA listed/recognized/certified or listable/recognizable/certifiable (that is, meets the FT4 flame tests), be double shielded (braid/foil) and should be dimensionally suitable for the RJ48 8 position modular connector. It would be similar to CAT5 cable except 120 ohms. I am not looking for a custom solution, but an existing product - probably manufactured by a European company (none of the big US cable manufactures have it). Any suggestions would be appreciated. Thanks, R. Grant Pinto grant.pi...@adn.alcatel.com Certification Engineer Alcatel Data Networks 703-724-2759
Re[4]: Shiep rules
Chris, Here my natural cynicism comes out... In this business we all get cynical. The reduction in Electronic Fog in our universe is a secondary effect Here we disagree. CISPR-12 was based on actual interference tests using real people as subjects. The standard, which was essentially adopted as EN 55022, is based on technically relevant factors, not politically relevant ones. authorities would get far more excited if goods with CE marks were stopped at a border, than if the goods made too much EMI. It depends whose authorities. For example, if the computing equipment concerned were to interfere with police radio, I imagine there would be a sufficiency of excited authorities, even _with_ the CE mark. There's a few centimes/Deutchmarks worth... Euro's. (Or is that Euro's d'Or?) Cortland As usual, the above does not reflect opinions or policies of my employer.
