Re: EFFECT
Peter, Think about why the standards define normal environment (temperature, humidity, airpressure,etc.)conditions when performing a test. Those environment parameters will cause the frequency to shift, cause the amplitude to change, etc..A simple example, when the emperature increases, the holes / gaps of the cover become larger, cut-off frequency becomes smaller, shielding effectiveness is reduced, your reading may become higher. If you had tested Radio Equipment against FCC Part 101, or ETSI 300-XXX, you would find both frequency and output power need to be tested by varying the environmental conditions. That's why we have to record all of those parameters during whatsever tests. Hope it helps, Leslie --- PETER PHILLIPS peter.phill...@mira.co.uk wrote: Dear group, Has anybody heard about the term EFFECT relating to EMC and environmental testing combined. I am looking for any information on the topic, also any views that people may have regarding the change in EMC performance due to adverse environmental conditions Looking forward to your comments Peter Peter Phillips MIRA (Motor Industry Research Association) Tel:++44 (0)1203 355576 Fax:++44 (0)1203 355486 e-mail peter.phill...@mira.co.uk - This message is coming from the emc-pstc discussion list. To cancel your subscription, send mail to majord...@ieee.org with the single line: unsubscribe emc-pstc (without the quotes). For help, send mail to ed.pr...@cubic.com, jim_bac...@monarch.com, ri...@sdd.hp.com, or roger.volgst...@compaq.com (the list administrators). _ Do You Yahoo!? Get your free @yahoo.com address at http://mail.yahoo.com - This message is coming from the emc-pstc discussion list. To cancel your subscription, send mail to majord...@ieee.org with the single line: unsubscribe emc-pstc (without the quotes). For help, send mail to ed.pr...@cubic.com, jim_bac...@monarch.com, ri...@sdd.hp.com, or roger.volgst...@compaq.com (the list administrators).
RE: Australian Electrical Approvals Authority
Dear Chris The information is as follows Office of the Chief Electrical Inspector Level 3 Building 2, 4 Riverside Quay SOUTHBANK VICTORIA 8007 PO BOX 262 Collins Street West VIC 8007 some phone numbers are Equipment Safety 61-3- 9203 9770 General 61-3-9203 9030 I hope this will help Regards -Original Message- From: Chris Allen [SMTP:chris_al...@eur.3com.com] Sent: Monday, 28 June 1999 17:05 To: emc-p...@majordomo.ieee.org Subject: Australian Electrical Approvals Authority Good morning, Is there anybody who can provide me with the contact details for the Australian Electrical Approvals Authority ? Thanks for your help. Regards, Chris. - This message is coming from the emc-pstc discussion list. To cancel your subscription, send mail to majord...@ieee.org with the single line: unsubscribe emc-pstc (without the quotes). For help, send mail to ed.pr...@cubic.com, jim_bac...@monarch.com, ri...@sdd.hp.com, or roger.volgst...@compaq.com (the list administrators). - This message is coming from the emc-pstc discussion list. To cancel your subscription, send mail to majord...@ieee.org with the single line: unsubscribe emc-pstc (without the quotes). For help, send mail to ed.pr...@cubic.com, jim_bac...@monarch.com, ri...@sdd.hp.com, or roger.volgst...@compaq.com (the list administrators).
Re: voltage on Neutral line
Hi Moshe: The voltage of the neutral with respect to the ground wire is a function of its resistance and its current: E = I * R Maximum normal current is the rating of the fuse or circuit- breaker protecting that particular circuit. For a 120-volt circuit in the USA and Canada, the current would be either 15 or 20 amperes. The resistance is a function of the wire cross-sectional area and its length. According to a licensed electrical engineer colleague, circuits in the USA are designed for a maximum 6% voltage drop, preferably 3% voltage drop at the load. This means that the voltage drop across the neutral from the load to the distribution transformer is 3% maximum, 1.5% preferable. So, the resistance is selected according to maximum voltage drop at the circuit rating. The answer to your question is that the neutral voltage varies from zero to 1.5% nominal, 3% maximum, of the supply voltage depending on load. It further varies with the distance of the point of interest from the point where the neutral is grounded. If the point of interest is within a few feet of the point where the neutral is grounded, then the neutral voltage will be a fraction of a percent. If the point of interest is near the maximum distance from the grounding point, and if the load is also at that point, then the neutral voltage will approach 1.5% nominal to 3% maximum. Fault current is a function of time. Overcurrent devices will operate according to their time-current curves. So, if you know the fault current, then you can calculate the voltage at any point along the neutral according to where the fault current is introduced and where the neutral is grounded. Fault current exists only for the period of time it takes to operate the overcurrent device (I-T curve). For a 120-volt system, you can expect about 1.8 volts drop nominal, 3.6 volts maximum, assuming a single, maximum load furthest from the point of grounding, and your measurement is also at that point. Best regards, Rich - Richard Nute Product Safety Engineer Hewlett-Packard Company Product Regulations Group AiO Division Tel : +1 858 655 3329 16399 West Bernardo Drive FAX : +1 858 655 4979 San Diego, California 92127 e-mail: ri...@sdd.hp.com - - This message is coming from the emc-pstc discussion list. To cancel your subscription, send mail to majord...@ieee.org with the single line: unsubscribe emc-pstc (without the quotes). For help, send mail to ed.pr...@cubic.com, jim_bac...@monarch.com, ri...@sdd.hp.com, or roger.volgst...@compaq.com (the list administrators).
Re: Speaker Stand
Is CE mark required for sales of this plastic stand? No. Is there any directive that this plastic stand falls under? No. Are there directive which requires the plastic material or the structure/shape to be of certain type? No. Hope it helps. Leslie _ Do You Yahoo!? Get your free @yahoo.com address at http://mail.yahoo.com - This message is coming from the emc-pstc discussion list. To cancel your subscription, send mail to majord...@ieee.org with the single line: unsubscribe emc-pstc (without the quotes). For help, send mail to ed.pr...@cubic.com, jim_bac...@monarch.com, ri...@sdd.hp.com, or roger.volgst...@compaq.com (the list administrators).
Re: Australian Electrical Approvals Authority
Hi Chris, I normally use the Victorian authorities (call Alex Wild, Ph: + 3 9203 9770), but I have the contact information for all of the Australian authorities if required. Regards Barry Esmore AUS-TICK (The Australian Compliance Professionals) Phone: + 61 3 9886 1345 Fax: + 61 3 9884 7272 Email: bar...@melbpc.org.au - Original Message - From: Chris Allen chris_al...@eur.3com.com To: emc-p...@majordomo.ieee.org Sent: Monday, June 28, 1999 5:05 PM Subject: Australian Electrical Approvals Authority Good morning, Is there anybody who can provide me with the contact details for the Australian Electrical Approvals Authority ? Thanks for your help. Regards, Chris. - This message is coming from the emc-pstc discussion list. To cancel your subscription, send mail to majord...@ieee.org with the single line: unsubscribe emc-pstc (without the quotes). For help, send mail to ed.pr...@cubic.com, jim_bac...@monarch.com, ri...@sdd.hp.com, or roger.volgst...@compaq.com (the list administrators). - This message is coming from the emc-pstc discussion list. To cancel your subscription, send mail to majord...@ieee.org with the single line: unsubscribe emc-pstc (without the quotes). For help, send mail to ed.pr...@cubic.com, jim_bac...@monarch.com, ri...@sdd.hp.com, or roger.volgst...@compaq.com (the list administrators).
Re: voltage on Neutral line, Measurements From Chile
At 12:08 AM 6/29/99 -0700, mvald...@netvision.net.il wrote: Hello everyone, What voltages can I expect on the Neutral (referenced to ground) line in various countries and connection systems? Is there a limit on how high the voltage may be, both in normal and fault conditions? Some of our Cellular base stations are located in regions of Chile where power is being intentionally turned off due to low water conditions at hydro-electric plants. We have been montoring the voltage at these sites due to concerns about the battery backup system. The cell sites use 380V Line to Line, 220V Line to Neutral, 3-Phase power. During restoration of power, the voltage on neutral sometimes rises to 220V Line to Ground for several cycles. The voltage on the phases has been measured as great as 440V Line to Line for several cycles, with Line to Neutral voltages as high as 380V. There does not seem to be much power available during this transition time with the wild voltages. Preliminary measurements in Brazil are showing some of the same results. The load regulation at remote sites seems to be a problem. Don Kimball thanks in advance, Moshe Name: moshe valdman E-mail: mvald...@netvision.net.il Phone: 972-54-881334 Telefax: 972-3-5496369 Date: 29/6/99 Time: 0:08:41 - This message is coming from the emc-pstc discussion list. To cancel your subscription, send mail to majord...@ieee.org with the single line: unsubscribe emc-pstc (without the quotes). For help, send mail to ed.pr...@cubic.com, jim_bac...@monarch.com, ri...@sdd.hp.com, or roger.volgst...@compaq.com (the list administrators). - This message is coming from the emc-pstc discussion list. To cancel your subscription, send mail to majord...@ieee.org with the single line: unsubscribe emc-pstc (without the quotes). For help, send mail to ed.pr...@cubic.com, jim_bac...@monarch.com, ri...@sdd.hp.com, or roger.volgst...@compaq.com (the list administrators).
Re: EFFECT
Hi Peter ... At 02:41 PM 6/28/99 +0100, PETER PHILLIPS wrote: Dear group, Has anybody heard about the term EFFECT relating to EMC and environmental testing combined. No. I believe there's an aircraft test that's titled something like Magnetic Effects. But I have no idea what that test entails and I don't know if it's a combination type test. Someone out there must know. I once suggested the idea of going into an environmental with a piece of equipment to do ESD testing at various RHs for a Bellcore style testing. That went over like a lead balloon. I'm sort a glad of that since the discussion went onto temperature testing with ESD at various temp levels below freezing. For some strange reason, standing in a 6x6x6 ft room in tropical conditions one minute then arctic conditions the next while recording something like 200 data points at various ESD levels just wasn't all that appealing. But if I thought of it, I'm sure someone else has ... I am looking for any information on the topic, also any views that people may have regarding the change in EMC performance due to adverse environmental conditions I had a PLL circuit giving me a bear of a time until I came back the next day after leaving at the site in below freezing temps. When it was turned on the next day, no PLL. Turned out the xtal froze up. But, it wasn't below the mfr's specs. Seems as though the mechanical impedance of the xtal was so high from low temps it wouldn't self start. That in turn started a routine test of prototype circuits using xtals in PLLs to be put into an environmental chamber at low temps. Looking forward to your comments Besides speculating with Paschen's Law, I'd also like to hear any testing that combines ESD + altitude. Also, ESD + humidity. - This message is coming from the emc-pstc discussion list. To cancel your subscription, send mail to majord...@ieee.org with the single line: unsubscribe emc-pstc (without the quotes). For help, send mail to ed.pr...@cubic.com, jim_bac...@monarch.com, ri...@sdd.hp.com, or roger.volgst...@compaq.com (the list administrators).
Re: specs on the Web???
Robert Walch wrote: I am trying to find the following specs. IEC721-3-1 and ETSI 300 019-2-1 Does any one know of a web site that might have these specs available. Thanks for your help. Best Regards, Robert Walch Chief Engineer VI-Olathe (913) 829 - 1777 x133 rwa...@vectron.com Robert ETSI standards are available free of charge from their website http://www.etsi.org IEC standards are not available free of charge, but you can download them on payment of a fee from http://www.iec.ch Best wishes Brian Jones - This message is coming from the emc-pstc discussion list. To cancel your subscription, send mail to majord...@ieee.org with the single line: unsubscribe emc-pstc (without the quotes). For help, send mail to ed.pr...@cubic.com, jim_bac...@monarch.com, ri...@sdd.hp.com, or roger.volgst...@compaq.com (the list administrators).
Re: specs on the Web???
Robert, ETSI recently placed all their specs on the web for free download. You need to register with them to get an identifier which you will need for the downloads. Their search engine requires careful use of spaces if you want to find anything, but once you get the hang of it the results are good. The IEC specs you will probably have to pay for. They can be obtained from the IEC itself or from national standards organisations e.g ANSI or BSI. Useful URLs http://webapp.etsi.fr/PublicationsSearch/home.htm http://www.etsi.fr/pubcatalog/queryform.asp http://www.etsi.fr/eds/ http://www.iec.ch/ http://www.iec.ch/cserv1-e.htm http://www.ansi.org/ I hope that these will be of help. Regards Geoff Lister From: Robert Walch rwa...@vectron.com To:emc-p...@ieee.org Subject: specs on the Web??? Date: Mon, 28 Jun 1999 16:46:20 -0400 Reply-to: Robert Walch rwa...@vectron.com I am trying to find the following specs. IEC721-3-1 and ETSI 300 019-2-1 Does any one know of a web site that might have these specs available. Thanks for your help. Best Regards, Robert Walch Chief Engineer VI-Olathe (913) 829 - 1777 x133 rwa...@vectron.com *Geoff Lister email: geoff.lis...@motionmedia.co.uk *Motion Media Technology Ltd., Horton Hall, Horton, Bristol, BS37 6QN, UK. *POTS : +44-(0)1454-313444 or +44-(0)1454-338561 (direct) *ISDN : +44-(0)1454-338555 or +44-(0)1454-338554 (direct) *FAX : +44-(0)1454-313678 Home : +44-(0)1275-854025 *WWW : http://www.motionmedia.co.uk/ * The Videophone Company - Seeing is believing - This message is coming from the emc-pstc discussion list. To cancel your subscription, send mail to majord...@ieee.org with the single line: unsubscribe emc-pstc (without the quotes). For help, send mail to ed.pr...@cubic.com, jim_bac...@monarch.com, ri...@sdd.hp.com, or roger.volgst...@compaq.com (the list administrators).
Re: Fw: EMC encyclopedia ??
I'm suffering from foot-in-mouth syndrome today. I just found out that Art of Safetylink is including the shipping free, so that slices the $10 margin down to only a matter of whose smile you like better! Hey, at that price, don't think twice. Buy the book (uhhh, CD)! Ed From: ed.pr...@cubic.com Subject: Re: Fw: EMC encyclopedia ?? Date: Tue, 29 Jun 1999 11:44:33 -0800 To: Art Michael amich...@connix.com, EMC-PSTC emc-p...@majordomo.ieee.org Cc: Morel Grunberg morel.grunb...@telrad.co.il Oops, it's also at: http://www.emf-emi.com/home/index.htm for an intro price of US$95! BTW, IIRC, I paid about US$1500 for White's 12 volume handbook set, circa 1991! Ed From: Art Michael amich...@connix.com Subject: Re: Fw: EMC encyclopedia ?? Date: Tue, 29 Jun 1999 12:19:20 -0400 (EDT) To: EMC-PSTC emc-p...@majordomo.ieee.org Cc: Morel Grunberg morel.grunb...@telrad.co.il Hello Morel, Just visit the Int'l Product Safety Bookshop www.safetylink.com/bookshop.html where you will find the book you seek. The EMC, Telecom and Computer Encyclopedia Handbook 3rd Ed. (and CD-ROM), by Don White was just published a few weeks ago. For a limited-time we are offering this book and cd-rom at a 25% discount. We will ship it (by Priority Mail) anywhere in the US for US$105.00 (Regualr price is US$142.00, including shipping in the US) Regards, Art Michael -- On Tue, 29 Jun 1999 ed.pr...@cubic.com wrote: Posted for Morel Grunberg morel.grunb...@telrad.co.il: From: Morel Grunberg morel.grunb...@telrad.co.il Subject: EMC encyclopedia ?? Date: Tue, 29 Jun 1999 18:34:19 +0300 To: 'emc-p...@majordomo.ieee.org' emc-p...@majordomo.ieee.org Hello, Looking for informations on how/where to get the Don White 'EMC encyclopedia' on hardcopy and/or CD ROMs. No findings on WEB search. Any help will be appreciated. Morel ---End of Original Message- -- Ed Price ed.pr...@cubic.com Electromagnetic Compatibility Lab Cubic Defense Systems San Diego, CA. USA 619-505-2780 Date: 06/29/1999 Time: 08:37:33 Military Avionics EMC Services Our Specialty Also Environmental / Metrology / Reliability -- - This message is coming from the emc-pstc discussion list. To cancel your subscription, send mail to majord...@ieee.org with the single line: unsubscribe emc-pstc (without the quotes). For help, send mail to ed.pr...@cubic.com, jim_bac...@monarch.com, ri...@sdd.hp.com, or roger.volgst...@compaq.com (the list administrators). - This message is coming from the emc-pstc discussion list. To cancel your subscription, send mail to majord...@ieee.org with the single line: unsubscribe emc-pstc (without the quotes). For help, send mail to ed.pr...@cubic.com, jim_bac...@monarch.com, ri...@sdd.hp.com, or roger.volgst...@compaq.com (the list administrators). ---End of Original Message- -- Ed Price ed.pr...@cubic.com Electromagnetic Compatibility Lab Cubic Defense Systems San Diego, CA. USA 619-505-2780 Date: 06/29/1999 Time: 11:44:37 Military Avionics EMC Services Our Specialty Also Environmental / Metrology / Reliability -- - This message is coming from the emc-pstc discussion list. To cancel your subscription, send mail to majord...@ieee.org with the single line: unsubscribe emc-pstc (without the quotes). For help, send mail to ed.pr...@cubic.com, jim_bac...@monarch.com, ri...@sdd.hp.com, or roger.volgst...@compaq.com (the list administrators). ---End of Original Message- -- Ed Price ed.pr...@cubic.com Electromagnetic Compatibility Lab Cubic Defense Systems San Diego, CA. USA 619-505-2780 List-Post: emc-pstc@listserv.ieee.org Date: 06/29/1999 Time: 15:02:27 Military Avionics EMC Services Our Specialty Also Environmental / Metrology / Reliability -- - This message is coming from the emc-pstc discussion list. To cancel your subscription, send mail to majord...@ieee.org with the single line: unsubscribe emc-pstc (without the quotes). For help, send mail to ed.pr...@cubic.com, jim_bac...@monarch.com, ri...@sdd.hp.com, or roger.volgst...@compaq.com (the list administrators).
Re: CANADIAN REQUIREMENTS
To make it easier and save you money, you can get a joint UL CSA listing called a c-UL for Product Safety. It carries the same weight in Canada as the CSA mark, but saves you from the added expense of getting the unit CSA certified and the expense of CSA coming to your factory for a yearly audits. - Original Message - From: Nezam Najafi nezam.naj...@madge.com To: 'George Waters' gwat...@digiceiver.com; emc-p...@ieee.org Sent: Tuesday, June 29, 1999 11:15 AM Subject: RE: CANADIAN REQUIREMENTS Hello George: Your FCC part 15 for emission is mutually recognized by Canada. As for Safety, US has UL1950 3rd Ed. while Canada has C22 NO. 950. These safety tests are almost identical with some dela. You need to get the Canadian safety certificate. Good Luck Nezam Najafi MADGE NETWORKS -Original Message- From: George Waters [mailto:gwat...@digiceiver.com] Sent: Tuesday, June 29, 1999 8:29 AM To: emc-p...@ieee.org Subject: CANADIAN REQUIREMENTS I need some guidance on an indoor satellite receiver we build. Functionally it is similar to a DISH network receiver, but ours is not a consumer product. We worked with test labs to obtain conformance to FCC Part 15, and CE, for which we have a DOC. Now our US customer wants to lease some of the units in Canada. What else do we need to do? George Waters - This message is coming from the emc-pstc discussion list. To cancel your subscription, send mail to majord...@ieee.org with the single line: unsubscribe emc-pstc (without the quotes). For help, send mail to ed.pr...@cubic.com, jim_bac...@monarch.com, ri...@sdd.hp.com, or roger.volgst...@compaq.com (the list administrators). - This message is coming from the emc-pstc discussion list. To cancel your subscription, send mail to majord...@ieee.org with the single line: unsubscribe emc-pstc (without the quotes). For help, send mail to ed.pr...@cubic.com, jim_bac...@monarch.com, ri...@sdd.hp.com, or roger.volgst...@compaq.com (the list administrators). - This message is coming from the emc-pstc discussion list. To cancel your subscription, send mail to majord...@ieee.org with the single line: unsubscribe emc-pstc (without the quotes). For help, send mail to ed.pr...@cubic.com, jim_bac...@monarch.com, ri...@sdd.hp.com, or roger.volgst...@compaq.com (the list administrators).
RE: Australian Electrical Approvals Authority
Chris: I am not sure how to contact them but I know a good contact who can help manufacturers with the certification processes in Australia. His information is: Kevin Richardson Stanimore Pty Limited 8 Mindaree Ave. Wyoming NSW 2250 Australia Email: k...@compuserve.com Tel: (61) 2 43 29 4070 Fax: (61) 2 43 28 5639 I recommend him highly. We counted on his services for years. Dave George Unisys -Original Message- From: Chris Allen [mailto:chris_al...@eur.3com.com] Sent: Monday, June 28, 1999 3:05 AM To: emc-p...@majordomo.ieee.org Subject: Australian Electrical Approvals Authority Good morning, Is there anybody who can provide me with the contact details for the Australian Electrical Approvals Authority ? Thanks for your help. Regards, Chris. - This message is coming from the emc-pstc discussion list. To cancel your subscription, send mail to majord...@ieee.org with the single line: unsubscribe emc-pstc (without the quotes). For help, send mail to ed.pr...@cubic.com, jim_bac...@monarch.com, ri...@sdd.hp.com, or roger.volgst...@compaq.com (the list administrators). - This message is coming from the emc-pstc discussion list. To cancel your subscription, send mail to majord...@ieee.org with the single line: unsubscribe emc-pstc (without the quotes). For help, send mail to ed.pr...@cubic.com, jim_bac...@monarch.com, ri...@sdd.hp.com, or roger.volgst...@compaq.com (the list administrators).
Re: Fw: EMC encyclopedia ??
Oops, it's also at: http://www.emf-emi.com/home/index.htm for an intro price of US$95! BTW, IIRC, I paid about US$1500 for White's 12 volume handbook set, circa 1991! Ed From: Art Michael amich...@connix.com Subject: Re: Fw: EMC encyclopedia ?? Date: Tue, 29 Jun 1999 12:19:20 -0400 (EDT) To: EMC-PSTC emc-p...@majordomo.ieee.org Cc: Morel Grunberg morel.grunb...@telrad.co.il Hello Morel, Just visit the Int'l Product Safety Bookshop www.safetylink.com/bookshop.html where you will find the book you seek. The EMC, Telecom and Computer Encyclopedia Handbook 3rd Ed. (and CD-ROM), by Don White was just published a few weeks ago. For a limited-time we are offering this book and cd-rom at a 25% discount. We will ship it (by Priority Mail) anywhere in the US for US$105.00 (Regualr price is US$142.00, including shipping in the US) Regards, Art Michael -- On Tue, 29 Jun 1999 ed.pr...@cubic.com wrote: Posted for Morel Grunberg morel.grunb...@telrad.co.il: From: Morel Grunberg morel.grunb...@telrad.co.il Subject: EMC encyclopedia ?? Date: Tue, 29 Jun 1999 18:34:19 +0300 To: 'emc-p...@majordomo.ieee.org' emc-p...@majordomo.ieee.org Hello, Looking for informations on how/where to get the Don White 'EMC encyclopedia' on hardcopy and/or CD ROMs. No findings on WEB search. Any help will be appreciated. Morel ---End of Original Message- -- Ed Price ed.pr...@cubic.com Electromagnetic Compatibility Lab Cubic Defense Systems San Diego, CA. USA 619-505-2780 Date: 06/29/1999 Time: 08:37:33 Military Avionics EMC Services Our Specialty Also Environmental / Metrology / Reliability -- - This message is coming from the emc-pstc discussion list. To cancel your subscription, send mail to majord...@ieee.org with the single line: unsubscribe emc-pstc (without the quotes). For help, send mail to ed.pr...@cubic.com, jim_bac...@monarch.com, ri...@sdd.hp.com, or roger.volgst...@compaq.com (the list administrators). - This message is coming from the emc-pstc discussion list. To cancel your subscription, send mail to majord...@ieee.org with the single line: unsubscribe emc-pstc (without the quotes). For help, send mail to ed.pr...@cubic.com, jim_bac...@monarch.com, ri...@sdd.hp.com, or roger.volgst...@compaq.com (the list administrators). ---End of Original Message- -- Ed Price ed.pr...@cubic.com Electromagnetic Compatibility Lab Cubic Defense Systems San Diego, CA. USA 619-505-2780 List-Post: emc-pstc@listserv.ieee.org Date: 06/29/1999 Time: 11:44:37 Military Avionics EMC Services Our Specialty Also Environmental / Metrology / Reliability -- - This message is coming from the emc-pstc discussion list. To cancel your subscription, send mail to majord...@ieee.org with the single line: unsubscribe emc-pstc (without the quotes). For help, send mail to ed.pr...@cubic.com, jim_bac...@monarch.com, ri...@sdd.hp.com, or roger.volgst...@compaq.com (the list administrators).
RE: EFFECT
Hello Peter: There is no combined EMC and environmental test that I am awared of. However, I suppose, you can perform some kind of Stress Screening or temperature shock test (i.e. Mil-Std-810). This will prematurely age you equipment/product prior to performing EMC so that you can perform EMC test on a aged products. Best Regards, Nezam Najafi Sr. Compliance Engineer Madge Networks, New Jersey -Original Message- From: PETER PHILLIPS [mailto:peter.phill...@mira.co.uk] Sent: Monday, June 28, 1999 9:41 AM To: Emc-Pstc (E-mail) Subject: EFFECT Dear group, Has anybody heard about the term EFFECT relating to EMC and environmental testing combined. I am looking for any information on the topic, also any views that people may have regarding the change in EMC performance due to adverse environmental conditions Looking forward to your comments Peter Peter Phillips MIRA (Motor Industry Research Association) Tel:++44 (0)1203 355576 Fax:++44 (0)1203 355486 e-mail peter.phill...@mira.co.uk - This message is coming from the emc-pstc discussion list. To cancel your subscription, send mail to majord...@ieee.org with the single line: unsubscribe emc-pstc (without the quotes). For help, send mail to ed.pr...@cubic.com, jim_bac...@monarch.com, ri...@sdd.hp.com, or roger.volgst...@compaq.com (the list administrators). - This message is coming from the emc-pstc discussion list. To cancel your subscription, send mail to majord...@ieee.org with the single line: unsubscribe emc-pstc (without the quotes). For help, send mail to ed.pr...@cubic.com, jim_bac...@monarch.com, ri...@sdd.hp.com, or roger.volgst...@compaq.com (the list administrators).
RE: NRTL Listing
Richard and Rich, Many persons think of not Listing a product which is powered by a Class 2 source of supply. I would say this: 1. What is the product? For example: if product is a medical product, the system must be assessed to the UL2601-1 and CSA C22.2 601-1 standard; if product has a telecom interface (TNVs) then system must be assessed to UL1950/CSA C22.2 950 3rd Edition; if product is audio/video, then system must be assessed to the applicable audio/video standards (I recently answered a thread on audio video product standards); if product is used around swimming pools, it must be assessed to the applicable US/Canadian Standards depending on the product function. Generally a Class 2 power supply is good for ITE but is not good enough for medical or audio/video applications where additional construction and/or testing is required. Also, if power supply is Class 2 and supplies an outdoor unit, unless the outdoor unit meets the required NEMA designation for enclosures (refer to UL50) and the circuits are not accessible, the Class 2 output should be below 21.2 V peak to be considered safe for wet locations. Based on the above variables, I would strongly suggest you obtain NRTL Listing for your product. I have a client with a battery operated product (2 AA alkaline batteries) who obtained Listing on their portable electronic dictionary; they not only spent money on the Listing process (which was mostly paperwork) but also on the flame rated plastics and PWBs and quarterly inspections required by the NRTL test house and OSHA. Their sales have been oustanding! Good luck with the inspectors out there whatever you do. But most importantly, build your product to meet the applicable safety/emc/etc. standards to minimize lawsuits. I am in basic agreement with Rich. My company makes two types of low voltage products. One type is permanently installed and one is movable. We always use a certified Class 2 or Limited Power Source. Normally we do not obtain certifications for our moveable devices since they are not normally subject to inspection by an electrical inspector. However, experience has shown that the electrical inspectors do ask a lot of questions about the permanetly installed devices, so to prevent the hassle, we do obtain certs on those. However, my understanding of the US and Canadian Electrical codes is that certification is not required for devices powered by a Class 2 source. I once asked the leading manufacture of home intercom/radio equipment is they obtain UL Listing and they said they have never obtained Listing for their Class 2 powered equipment. -- From: Rich Nute [SMTP:ri...@sdd.hp.com] Sent: Friday, June 25, 1999 8:03 PM To: jfinlay...@nbase-xyplex.com Cc: emc-p...@ieee.org Subject: Re: NRTL Listing Hi Joe: liability and such. Can anyone share some more info as to their reasons for listing or not listing such a product which is well below hazardous limits. There are two schools of thought: 1. Because of its low-voltage supply, the unit is exempt from most safety certifications throughout the world. Therefore, there is no need to obtain any safety certifications. 2. Regardless of being exempt, customers expect most electrical products to bear safety certification marks. Indeed, OSHA and NEC electrical inspectors (and customs inspectors) cannot make field judgements as to whether an electrical product is exempt from safety certification. The presence of the marks assure acceptance without your intervention. I suggest that the decision should be based on your customer base, where the product is used, your company, the product, and the possible difficulties you might encounter without the marks. Any difficulties will have a cost in (1) delaying the product to the customer, and (2) your time to resolve, for the various inspectors, the fact that the product does not require the safety certification. For example, low-voltage products going into the home are not likely to be subject to discrimination due to safety certification marks. On the other hand, products going into the workplace, being part of an electrical installation, or going across borders may very well be subject to inspection for certification marks. Have fun! Rich - This message is coming from the emc-pstc discussion list. To cancel your subscription, send mail to majord...@ieee.org with the single line: unsubscribe emc-pstc (without the quotes). For help, send mail to ed.pr...@cubic.com, jim_bac...@monarch.com, ri...@sdd.hp.com, or roger.volgst...@compaq.com (the list administrators).
RE: specs on the Web???
Hello Robert: You can down load a free copy of ESTI speci by going to http://www.etsi.fr http://www.etsi.fr . As for the IEC specs, you can purchase it by calling Global Engineering (1-800-854-7179) Regards, Nezam Najafi Sr. Compliance Engineer Madge Networks, Inc. -Original Message- From: Robert Walch [mailto:rwa...@vectron.com] Sent: Monday, June 28, 1999 4:46 PM To: emc-p...@ieee.org Subject: specs on the Web??? I am trying to find the following specs. IEC721-3-1 and ETSI 300 019-2-1 Does any one know of a web site that might have these specs available. Thanks for your help. Best Regards, Robert Walch Chief Engineer VI-Olathe (913) 829 - 1777 x133 rwa...@vectron.com - This message is coming from the emc-pstc discussion list. To cancel your subscription, send mail to majord...@ieee.org with the single line: unsubscribe emc-pstc (without the quotes). For help, send mail to ed.pr...@cubic.com, jim_bac...@monarch.com, ri...@sdd.hp.com, or roger.volgst...@compaq.com (the list administrators).
RE: CANADIAN REQUIREMENTS
Hello George: Your FCC part 15 for emission is mutually recognized by Canada. As for Safety, US has UL1950 3rd Ed. while Canada has C22 NO. 950. These safety tests are almost identical with some dela. You need to get the Canadian safety certificate. Good Luck Nezam Najafi MADGE NETWORKS -Original Message- From: George Waters [mailto:gwat...@digiceiver.com] Sent: Tuesday, June 29, 1999 8:29 AM To: emc-p...@ieee.org Subject: CANADIAN REQUIREMENTS I need some guidance on an indoor satellite receiver we build. Functionally it is similar to a DISH network receiver, but ours is not a consumer product. We worked with test labs to obtain conformance to FCC Part 15, and CE, for which we have a DOC. Now our US customer wants to lease some of the units in Canada. What else do we need to do? George Waters - This message is coming from the emc-pstc discussion list. To cancel your subscription, send mail to majord...@ieee.org with the single line: unsubscribe emc-pstc (without the quotes). For help, send mail to ed.pr...@cubic.com, jim_bac...@monarch.com, ri...@sdd.hp.com, or roger.volgst...@compaq.com (the list administrators). - This message is coming from the emc-pstc discussion list. To cancel your subscription, send mail to majord...@ieee.org with the single line: unsubscribe emc-pstc (without the quotes). For help, send mail to ed.pr...@cubic.com, jim_bac...@monarch.com, ri...@sdd.hp.com, or roger.volgst...@compaq.com (the list administrators).
EU Official Languages
When a Directive requires information to be provided to the user, and that equipment is intended to marketed in every EU and EFTA country, what minimal set of languages must be used? I can think of the following languages that are used in these countries. Are there more languages that must be included? Can some of these be deleted? English, French, German, Spanish, Portuguese, Italian, Greek, Dutch, Danish, Swedish, Finnish, and Norwegian (EFTA) - This message is coming from the emc-pstc discussion list. To cancel your subscription, send mail to majord...@ieee.org with the single line: unsubscribe emc-pstc (without the quotes). For help, send mail to ed.pr...@cubic.com, jim_bac...@monarch.com, ri...@sdd.hp.com, or roger.volgst...@compaq.com (the list administrators).
Fw: EMC encyclopedia ??
Posted for Morel Grunberg morel.grunb...@telrad.co.il: From: Morel Grunberg morel.grunb...@telrad.co.il Subject: EMC encyclopedia ?? Date: Tue, 29 Jun 1999 18:34:19 +0300 To: 'emc-p...@majordomo.ieee.org' emc-p...@majordomo.ieee.org Hello, Looking for informations on how/where to get the Don White 'EMC encyclopedia' on hardcopy and/or CD ROMs. No findings on WEB search. Any help will be appreciated. Morel ---End of Original Message- -- Ed Price ed.pr...@cubic.com Electromagnetic Compatibility Lab Cubic Defense Systems San Diego, CA. USA 619-505-2780 List-Post: emc-pstc@listserv.ieee.org Date: 06/29/1999 Time: 08:37:33 Military Avionics EMC Services Our Specialty Also Environmental / Metrology / Reliability -- - This message is coming from the emc-pstc discussion list. To cancel your subscription, send mail to majord...@ieee.org with the single line: unsubscribe emc-pstc (without the quotes). For help, send mail to ed.pr...@cubic.com, jim_bac...@monarch.com, ri...@sdd.hp.com, or roger.volgst...@compaq.com (the list administrators).
Re: Fw: EMC encyclopedia ??
Hello Morel, Just visit the Int'l Product Safety Bookshop www.safetylink.com/bookshop.html where you will find the book you seek. The EMC, Telecom and Computer Encyclopedia Handbook 3rd Ed. (and CD-ROM), by Don White was just published a few weeks ago. For a limited-time we are offering this book and cd-rom at a 25% discount. We will ship it (by Priority Mail) anywhere in the US for US$105.00 (Regualr price is US$142.00, including shipping in the US) Regards, Art Michael -- On Tue, 29 Jun 1999 ed.pr...@cubic.com wrote: Posted for Morel Grunberg morel.grunb...@telrad.co.il: From: Morel Grunberg morel.grunb...@telrad.co.il Subject: EMC encyclopedia ?? Date: Tue, 29 Jun 1999 18:34:19 +0300 To: 'emc-p...@majordomo.ieee.org' emc-p...@majordomo.ieee.org Hello, Looking for informations on how/where to get the Don White 'EMC encyclopedia' on hardcopy and/or CD ROMs. No findings on WEB search. Any help will be appreciated. Morel ---End of Original Message- -- Ed Price ed.pr...@cubic.com Electromagnetic Compatibility Lab Cubic Defense Systems San Diego, CA. USA 619-505-2780 Date: 06/29/1999 Time: 08:37:33 Military Avionics EMC Services Our Specialty Also Environmental / Metrology / Reliability -- - This message is coming from the emc-pstc discussion list. To cancel your subscription, send mail to majord...@ieee.org with the single line: unsubscribe emc-pstc (without the quotes). For help, send mail to ed.pr...@cubic.com, jim_bac...@monarch.com, ri...@sdd.hp.com, or roger.volgst...@compaq.com (the list administrators). - This message is coming from the emc-pstc discussion list. To cancel your subscription, send mail to majord...@ieee.org with the single line: unsubscribe emc-pstc (without the quotes). For help, send mail to ed.pr...@cubic.com, jim_bac...@monarch.com, ri...@sdd.hp.com, or roger.volgst...@compaq.com (the list administrators).
RE: EFFECT
I agree with the substance of Ed's comment. In my experience the more usual terminology is EME = electromagnetic environment, while E3 (E-cubed) = electromagnetic environmental effects. Neither of these terms relates directly to the adverse effect on rf or EMC performance due to other environmental conditions. -Original Message- From: ed.pr...@cubic.com [SMTP:ed.pr...@cubic.com] Sent: Monday, June 28, 1999 11:43 AM To: EMC-PSTC; PETER PHILLIPS Subject: Re: EFFECT Peter: Electromagnetic Effects (EME) is a bit more comprehensive a concept than Electromagnetic Compatibility (EMC). There are many things that you can do with electromagnetic energy that are not necessarily related to compatibility. RF techniques can be used to investigate or change physical properties, protect friendly forces, confuse hostile forces, deny use of assets, eavesdrop; well, lot's more. I would say that EMC is a subset of EME. Regards, Ed From: PETER PHILLIPS peter.phill...@mira.co.uk Subject: EFFECT Date: Mon, 28 Jun 1999 14:41:12 +0100 To: Emc-Pstc (E-mail) emc-p...@ieee.org Dear group, Has anybody heard about the term EFFECT relating to EMC and environmental testing combined. I am looking for any information on the topic, also any views that people may have regarding the change in EMC performance due to adverse environmental conditions Looking forward to your comments Peter Peter Phillips MIRA (Motor Industry Research Association) Tel:++44 (0)1203 355576 Fax:++44 (0)1203 355486 e-mail peter.phill...@mira.co.uk - This message is coming from the emc-pstc discussion list. To cancel your subscription, send mail to majord...@ieee.org with the single line: unsubscribe emc-pstc (without the quotes). For help, send mail to ed.pr...@cubic.com, jim_bac...@monarch.com, ri...@sdd.hp.com, or roger.volgst...@compaq.com (the list administrators). ---End of Original Message- -- Ed Price ed.pr...@cubic.com Electromagnetic Compatibility Lab Cubic Defense Systems San Diego, CA. USA 619-505-2780 Date: 06/28/1999 Time: 08:42:51 Military Avionics EMC Services Our Specialty Also Environmental / Metrology / Reliability -- - This message is coming from the emc-pstc discussion list. To cancel your subscription, send mail to majord...@ieee.org with the single line: unsubscribe emc-pstc (without the quotes). For help, send mail to ed.pr...@cubic.com, jim_bac...@monarch.com, ri...@sdd.hp.com, or roger.volgst...@compaq.com (the list administrators). - This message is coming from the emc-pstc discussion list. To cancel your subscription, send mail to majord...@ieee.org with the single line: unsubscribe emc-pstc (without the quotes). For help, send mail to ed.pr...@cubic.com, jim_bac...@monarch.com, ri...@sdd.hp.com, or roger.volgst...@compaq.com (the list administrators).
Re: voltage on Neutral line
What voltages can I expect on the Neutral (referenced to ground) line in various countries and connection systems? Is there a limit on how high the voltage may be, both in normal and fault conditions? Moshe, THE's booklet, World Electricity Supplies, lists the supply voltage, frequency, and power distribution systems used in over 200 countries. You can order it through Technical Standards Services, Ltd. webpage at http://www.techstandards.co.uk/thsguide.html TN and TT power systems (IEC 950 1.2.12.1 and 1.2.12.2) are the ones usually encountered. Neutral-to-ground voltages should be less than a few (5 or so) volts even under a line-to-ground fault. Hospitals and other high-reliability installations sometimes use IT power systems (IEC 950 1.2.12.3) permitting continued operation even if a line-to-ground fault occurs-- at the cost of: * Neutral-to-ground voltage approaching the single-phase line voltage. * In a three-phase system, the other phase-to-ground voltages approaching sqrt(3) times the single-phase line voltage. This can double the required creepage and clearance distances for (to us) a tiny additional market. So we specify that our products are not to be installed on IT power systems, but may be powered by an isolation transformer that gets its power from an IT power system to create a local TN-S power system. John Barnes Advisory Engineer Lexmark International - This message is coming from the emc-pstc discussion list. To cancel your subscription, send mail to majord...@ieee.org with the single line: unsubscribe emc-pstc (without the quotes). For help, send mail to ed.pr...@cubic.com, jim_bac...@monarch.com, ri...@sdd.hp.com, or roger.volgst...@compaq.com (the list administrators).
Re: specs on the Web???
Robert, Try www.global.resea...@ihs.com These folks have lots of documents that you may have trouble finding elsewhere. We buy most of our documents from Global or from Compliance Engineering. If you want to try compliance engineering, call 781-932-9353 and Patty will help you out. Bill Ronzio EMC International Test Labs Youngsville, NC 919-554-0901, phone 919-556-2043, fax -Original Message- From: Robert Walch rwa...@vectron.com To: emc-p...@ieee.org emc-p...@ieee.org Date: Monday, June 28, 1999 7:42 PM Subject: specs on the Web??? I am trying to find the following specs. IEC721-3-1 and ETSI 300 019-2-1 Does any one know of a web site that might have these specs available. Thanks for your help. Best Regards, Robert Walch Chief Engineer VI-Olathe (913) 829 - 1777 x133 rwa...@vectron.com
Draft ENs
Is there a web site that lists Draft ENs that are published for public comment? - This message is coming from the emc-pstc discussion list. To cancel your subscription, send mail to majord...@ieee.org with the single line: unsubscribe emc-pstc (without the quotes). For help, send mail to ed.pr...@cubic.com, jim_bac...@monarch.com, ri...@sdd.hp.com, or roger.volgst...@compaq.com (the list administrators).
RE: Australian Electrical Approvals Authority
To All: Dose anybody have a bmp/ipg file for Australian Telecomm A-tick mark to send me. It is normally a check marrk in a traingle with Supplier number next to it.I thank you in advance Regards, Nezam Najafi Madge Networks, -Original Message- From: Barry Esmore [mailto:bar...@melbpc.org.au] Sent: Monday, June 28, 1999 7:16 PM To: Chris Allen; emc-p...@majordomo.ieee.org Subject: Re: Australian Electrical Approvals Authority Hi Chris, I normally use the Victorian authorities (call Alex Wild, Ph: + 3 9203 9770), but I have the contact information for all of the Australian authorities if required. Regards Barry Esmore AUS-TICK (The Australian Compliance Professionals) Phone: + 61 3 9886 1345 Fax: + 61 3 9884 7272 Email: bar...@melbpc.org.au - Original Message - From: Chris Allen chris_al...@eur.3com.com To: emc-p...@majordomo.ieee.org Sent: Monday, June 28, 1999 5:05 PM Subject: Australian Electrical Approvals Authority Good morning, Is there anybody who can provide me with the contact details for the Australian Electrical Approvals Authority ? Thanks for your help. Regards, Chris. - This message is coming from the emc-pstc discussion list. To cancel your subscription, send mail to majord...@ieee.org with the single line: unsubscribe emc-pstc (without the quotes). For help, send mail to ed.pr...@cubic.com, jim_bac...@monarch.com, ri...@sdd.hp.com, or roger.volgst...@compaq.com (the list administrators). - This message is coming from the emc-pstc discussion list. To cancel your subscription, send mail to majord...@ieee.org with the single line: unsubscribe emc-pstc (without the quotes). For help, send mail to ed.pr...@cubic.com, jim_bac...@monarch.com, ri...@sdd.hp.com, or roger.volgst...@compaq.com (the list administrators). - This message is coming from the emc-pstc discussion list. To cancel your subscription, send mail to majord...@ieee.org with the single line: unsubscribe emc-pstc (without the quotes). For help, send mail to ed.pr...@cubic.com, jim_bac...@monarch.com, ri...@sdd.hp.com, or roger.volgst...@compaq.com (the list administrators).
RE: specs on the Web???
Try the IEC and ETSI websites. There is a charge for the IEC standards and the ETSI standards are free. http://www.iec.ch/ http://www.iec.ch/ http://www.etsi.org/ http://www.etsi.org/ -Original Message- From: Robert Walch [mailto:rwa...@vectron.com] Sent: Monday, June 28, 1999 4:46 PM To: emc-p...@ieee.org Subject: specs on the Web??? I am trying to find the following specs. IEC721-3-1 and ETSI 300 019-2-1 Does any one know of a web site that might have these specs available. Thanks for your help. Best Regards, Robert Walch Chief Engineer VI-Olathe (913) 829 - 1777 x133 rwa...@vectron.com - This message is coming from the emc-pstc discussion list. To cancel your subscription, send mail to majord...@ieee.org with the single line: unsubscribe emc-pstc (without the quotes). For help, send mail to ed.pr...@cubic.com, jim_bac...@monarch.com, ri...@sdd.hp.com, or roger.volgst...@compaq.com (the list administrators).
CANADIAN REQUIREMENTS
I need some guidance on an indoor satellite receiver we build. Functionally it is similar to a DISH network receiver, but ours is not a consumer product. We worked with test labs to obtain conformance to FCC Part 15, and CE, for which we have a DOC. Now our US customer wants to lease some of the units in Canada. What else do we need to do? George Waters - This message is coming from the emc-pstc discussion list. To cancel your subscription, send mail to majord...@ieee.org with the single line: unsubscribe emc-pstc (without the quotes). For help, send mail to ed.pr...@cubic.com, jim_bac...@monarch.com, ri...@sdd.hp.com, or roger.volgst...@compaq.com (the list administrators).
Re: emc compliance
I have seen some examples of the shipment of ferrites with a consumer product. I have purchased two computer modem boards from different vendors. Each came with a ferrite in the box, together with instructions as to how to loop the phone cable through it, and a warning ss described below. George Waters John Juhasz wrote: When I was at my last company, we had a similar situation. The customer was the one who would provide the cable to the EUT. In the report it was a 'modification' note which indicated that a clamp-on ferrite, P/N was used. We then provided the ferrite with each shipment, along with a detailed instruction on usage. A warning was included on the instruction sheet that the ferrite was required to meet emission specifications, and if it was not used, compliance is not guaranteed. The instruction sheet was prominently located within the documentation package. However, take note that this product was not consumer goods, and trained installers were required for that product. Therefore, there was some assurance that the ferrite was indeed going to be installed as instructed. If this was a product that was sold directly to a home user, I wouldn't feel comfortable with this. Most times a home user just wants to get the thing running, and doesn't care, or more often doesn't read such instructions. John A. Juhasz Product Qualification Compliance Engr. Fiber Options, Inc. 80 Orville Dr. Suite 102 Bohemia, NY 11716 USA Tel: 516-567-8320 ext. 324 Fax: 516-567-8322 -Original Message- From: lisa_cef...@mksinst.com [mailto:lisa_cef...@mksinst.com] Sent: Friday, June 25, 1999 3:37 PM To: emc-p...@majordomo.ieee.org Subject: emc compliance Here's a question If you have a product that, at one particular frequency during radiated RF, you simply cannot get to pass the requirements of the relative CE standard without putting an external ferrite on the cable, is it legal , to still mark it, provided you inform your customers via the declaration of conformity or in the manual etc., that they could experience problems at such and such frequencies and if they do, to use a ferrite? (boy, that was a mouthful). Faced with a redesign or a statement, the words would be the easier route to take, since in this case, the customer could probably never see the problem frequency range. Comments? thank you for any advise, Lisa - This message is coming from the emc-pstc discussion list. To cancel your subscription, send mail to majord...@ieee.org with the single line: unsubscribe emc-pstc (without the quotes). For help, send mail to ed.pr...@cubic.com, jim_bac...@monarch.com, ri...@sdd.hp.com, or roger.volgst...@compaq.com (the list administrators). - This message is coming from the emc-pstc discussion list. To cancel your subscription, send mail to majord...@ieee.org with the single line: unsubscribe emc-pstc (without the quotes). For help, send mail to ed.pr...@cubic.com, jim_bac...@monarch.com, ri...@sdd.hp.com, or roger.volgst...@compaq.com (the list administrators). - This message is coming from the emc-pstc discussion list. To cancel your subscription, send mail to majord...@ieee.org with the single line: unsubscribe emc-pstc (without the quotes). For help, send mail to ed.pr...@cubic.com, jim_bac...@monarch.com, ri...@sdd.hp.com, or roger.volgst...@compaq.com (the list administrators).
RE: Speaker Stand
I don't think a CE mark is required for the stand. However, you may have to test your product as it is installed on the stand. The particular tests I am thinking of are the 10 degree tip test and the xx Newton sideways push force test. Does the product tip over in either of these two tests? If so, what is the result? Can any one or any thing be damaged if the product tips over? Will it hurt if the subwoofer lands on your foot? Something to think about. Scott s_doug...@ecrm.com -Original Message- From: koh...@cyberway.com.sg [SMTP:koh...@cyberway.com.sg] Sent: Monday, June 28, 1999 11:15 AM To: emc-p...@ieee.org Subject:Speaker Stand Hi, We are currently selling speaker system unit in Europe market. The speaker system consists of a main unit which is the subwoofer and five satelite speakers. The satelite speaker is just a passive device. We have the complete speaker unit tested and compliance to EMC and LVD Directive. Now our design team has made satelite speaker stand. Having the speaker supported enhance it sound quality. These stand has three leg, made of purely plastic material. It caters for the wires, from the subwoofer to the satelite speaker, to be laid within. We will be putting these stand out for sales (thru retail website) to existing custom who had purchase our speaker system. I think my questions is a bit silly. Is CE mark required for sales of this plastic stand? Is there any directive that this plastic stand falls under? Are there directive which requires the plastic material or the structure/shape to be of certain type? Your advice is much appreciated. Thanks in advance. Regards Koh - This message is coming from the emc-pstc discussion list. To cancel your subscription, send mail to majord...@ieee.org with the single line: unsubscribe emc-pstc (without the quotes). For help, send mail to ed.pr...@cubic.com, jim_bac...@monarch.com, ri...@sdd.hp.com, or roger.volgst...@compaq.com (the list administrators). - This message is coming from the emc-pstc discussion list. To cancel your subscription, send mail to majord...@ieee.org with the single line: unsubscribe emc-pstc (without the quotes). For help, send mail to ed.pr...@cubic.com, jim_bac...@monarch.com, ri...@sdd.hp.com, or roger.volgst...@compaq.com (the list administrators).
SCART specification question
I've been asked to look at a gadget which is intended for connection to the SCART port on a TV or VCR. The gadget in question is powered via a plug-top transformer, which we can specify to be SELV output. My question relates to the specification of the SCART port which is, I guess, a standard configuration (although a key-word search on SCART in the BS catalogue throws up no references, I notice...) Is it, or is it not, safe to assume that connections made to the SCART interface are SELV? In other words, even if we ensure that all parts of our product powered at SELV, do we have to treat those parts connected to the SCART interface as potentially live, or can we assume that they too will be SELV? Any ideas (including a reference to the basic SCART specification) would be helpful. Regards Nick. - This message is coming from the emc-pstc discussion list. To cancel your subscription, send mail to majord...@ieee.org with the single line: unsubscribe emc-pstc (without the quotes). For help, send mail to ed.pr...@cubic.com, jim_bac...@monarch.com, ri...@sdd.hp.com, or roger.volgst...@compaq.com (the list administrators).
Re: specs on the Web???
Robert, I suggest you visit http://www.etsi.org/. You can download ETSI standards from here free of charge. Robert Walch wrote: I am trying to find the following specs. IEC721-3-1 and ETSI 300 019-2-1 Does any one know of a web site that might have these specs available. Thanks for your help. Best Regards, Robert Walch Chief Engineer VI-Olathe (913) 829 - 1777 x133 rwa...@vectron.com attachment: iball.vcf
