RE: What's the deal with Wire Nuts?
Don, Hi. In your response to Brian you said... However, written into the body of the IEC 60950-1 and EN 60950-1 (and other national derivative standards) is a wiring method for permanent connection to the mains not acceptable in the US and Canada – the use of a non-detachable power supply cord for permanent connection. Can you please supply to me the reference that prohibits that wiring method in US and Canada? Regards Tim Tim Haynes A1N10 Electromagnetic Engineering Specialist SELEX Sensors and Airborne Systems 300 Capability Green Luton LU1 3PG ( Tel : +44 (0)1582 886239 7 Fax : +44 (0)1582 795863 ) Mob: +44 (0)7703 559 310 * E-mail : tim.hay...@selexgalileo.com P Please consider the environment before printing this email. There are 10 types of people in the world-those who understand binary and those who don't. J. Paxman SELEX Sensors and Airborne Systems Limited Registered Office: Sigma House, Christopher Martin Road, Basildon, Essex SS14 3EL A company registered in England Wales. Company no. 02426132 This email and any attachments are confidential to the intended recipient and may also be privileged. If you are not the intended recipient please delete it from your system and notify the sender. You should not copy it or use it for any purpose nor disclose or distribute its contents to any other person. - This message is from the IEEE Product Safety Engineering Society emc-pstc discussion list. To post a message to the list, send your e-mail to emc-p...@ieee.org All emc-pstc postings are archived and searchable on the web at http://www.ieeecommunities.org/emc-pstc Graphics (in well-used formats), large files, etc. can be posted to that URL. Website: http://www.ieee-pses.org/ Instructions: http://listserv.ieee.org/request/user-guide.html List rules: http://www.ieee-pses.org/listrules.html For help, send mail to the list administrators: Scott Douglas emcp...@ptcnh.net Mike Cantwell mcantw...@ieee.org For policy questions, send mail to: Jim Bacher j.bac...@ieee.org David Heald dhe...@gmail.com
RE: What's the deal with Wire Nuts?(Non-Detachable Power Supply Cords)
Tim, Sure. In clause 3.2.3, “Permanently connected equipment”, it says: “PERMANENTLY CONNECTED EQUIPMENT shall be provided with either (strikethrough): * a set of terminals as specified in 3.3; or (strikethrough) * a NON-DETACHABLE POWER SUPPLY CORD (strikethrough) PERMANENTLY CONNECTED EQUIPMENT having a set of terminals shall:” This has been there since UL 1950 and CSA C22.2 No. 950 of old times. The source of this omission is in the following US National Electrical Code and Canadian Electrical Code, Part I sections: NEC (2008), Article 400 – FLEXIBLE CORDS AND CABLES “400.7 Uses Permitted.” “(B) Attachment Plugs. Where used as permitted in 400.7(A)(3), (A)(6), and (A)(8), each flexible cord shall be equipped with an attachment plug and shall be energized from a receptacle outlet.” “400.8 Uses Not Permitted. Unless specifically permitted in 400.7, flexible cords shall not be used for the following:” (1) As a substitute for the fixed wiring of a structure (4) Where attached to building surfaces (6) Where installed in raceways, except as otherwise permitted in this Code. CSA C22.1, Canadian Electrical Code, Part I (2006), 4-010, Uses of flexible cords (3) Flexible cords shall not be used (a) as a substitute for the fixed wiring of structures and shall not be (i) permanently secured to any structural member; Best Regards, Don Gies, N.C.E Senior Product Compliance Engineer Alcatel-Lucent Murray Hill, NJ 07974-0636 USA From: Haynes, Tim (SELEX GALILEO, UK) [mailto:tim.hay...@selexgalileo.com] Sent: Thursday, November 20, 2008 4:03 AM To: Don Gies; EMC-PSTC@LISTSERV.IEEE.ORG Subject: RE: What's the deal with Wire Nuts? Don, Hi. In your response to Brian you said... However, written into the body of the IEC 60950-1 and EN 60950-1 (and other national derivative standards) is a wiring method for permanent connection to the mains not acceptable in the US and Canada – the use of a non-detachable power supply cord for permanent connection. Can you please supply to me the reference that prohibits that wiring method in US and Canada? Regards Tim Tim Haynes A1N10 Electromagnetic Engineering Specialist SELEX Sensors and Airborne Systems 300 Capability Green Luton LU1 3PG * Tel : +44 (0)1582 886239 * Fax : +44 (0)1582 795863 * Mob: +44 (0)7703 559 310 * E-mail : tim.hay...@selexgalileo.com P Please consider the environment before printing this email. There are 10 types of people in the world-those who understand binary and those who don't. J. Paxman SELEX Sensors and Airborne Systems Limited Registered Office: Sigma House, Christopher Martin Road, Basildon, Essex SS14 3EL A company registered in England Wales. Company no. 02426132 This email and any attachments are confidential to the intended recipient and may also be privileged. If you are not the intended recipient please delete it from your system and notify the sender. You should not copy it or use it for any purpose nor disclose or distribute its contents to any other person. - This message is from the IEEE Product Safety Engineering Society emc-pstc discussion list. To post a message to the list, send your e-mail to emc-p...@ieee.org All emc-pstc postings are archived and searchable on the web at http://www.ieeecommunities.org/emc-pstc Graphics (in well-used formats), large files, etc. can be posted to that URL. Website: http://www.ieee-pses.org/ Instructions: http://listserv.ieee.org/request/user-guide.html List rules: http://www.ieee-pses.org/listrules.html For help, send mail to the list administrators: Scott Douglas emcp...@ptcnh.net Mike Cantwell mcantw...@ieee.org For policy questions, send mail to: Jim Bacher j.bac...@ieee.org David Heald dhe...@gmail.com
automotive environmental testing
Hi Does anyone know where I can find standards/requirements for vibration test of equipment for mounting in autos especially in EU. Best regards, Mr. Kim Boll Jensen Bolls Rådgivning Ved Gadekæret 11F DK-3660 Stenløse Denmark T: +45 48 18 35 66 F: +45 48 18 35 30 k...@bolls.dk www.bolls.dk - This message is from the IEEE Product Safety Engineering Society emc-pstc discussion list. To post a message to the list, send your e-mail to emc-p...@ieee.org All emc-pstc postings are archived and searchable on the web at: http://www.ieeecommunities.org/emc-pstc Graphics (in well-used formats), large files, etc. can be posted to that URL. Website: http://www.ieee-pses.org/ Instructions: http://listserv.ieee.org/request/user-guide.html List rules: http://www.ieee-pses.org/listrules.html For help, send mail to the list administrators: Scott Douglas emcp...@ptcnh.net Mike Cantwell mcantw...@ieee.org For policy questions, send mail to: Jim Bacher: j.bac...@ieee.org David Heald: dhe...@gmail.com
Critical Components
Are there any IEC (or other accepted references) documents that define what constitutes “critical components” in terms of product safety? What drives calling out a part on a “critical components” list? I would contend that it is any component of a system where the removal or substitution could change the compliance of the product relative to the applicable safety standard. Any thoughts? Doug Kramer P Please consider the environment before printing this e-mail. - This message is from the IEEE Product Safety Engineering Society emc-pstc discussion list. To post a message to the list, send your e-mail to emc-p...@ieee.org All emc-pstc postings are archived and searchable on the web at http://www.ieeecommunities.org/emc-pstc Graphics (in well-used formats), large files, etc. can be posted to that URL. Website: http://www.ieee-pses.org/ Instructions: http://listserv.ieee.org/request/user-guide.html List rules: http://www.ieee-pses.org/listrules.html For help, send mail to the list administrators: Scott Douglas emcp...@ptcnh.net Mike Cantwell mcantw...@ieee.org For policy questions, send mail to: Jim Bacher j.bac...@ieee.org David Heald dhe...@gmail.com
RE: Critical Components
Guidance per the CB scheme http://www.iecee.org/Operational_documents/iecee_documents/od-cb2039_ed.1.0.pdf Regards, Kaz Gawrzyjal Dell Inc. From: emc-p...@ieee.org [mailto:emc-p...@ieee.org] On Behalf Of Doug Kramer Sent: Thursday, November 20, 2008 8:43 AM To: emc-p...@ieee.org Subject: Critical Components Are there any IEC (or other accepted references) documents that define what constitutes “critical components” in terms of product safety? What drives calling out a part on a “critical components” list? I would contend that it is any component of a system where the removal or substitution could change the compliance of the product relative to the applicable safety standard. Any thoughts? Doug Kramer P Please consider the environment before printing this e-mail. - This message is from the IEEE Product Safety Engineering Society emc-pstc discussion list. To post a message to the list, send your e-mail to emc-p...@ieee.org All emc-pstc postings are archived and searchable on the web at http://www.ieeecommunities.org/emc-pstc Graphics (in well-used formats), large files, etc. can be posted to that URL. Website: http://www.ieee-pses.org/ Instructions: http://listserv.ieee.org/request/user-guide.html List rules: http://www.ieee-pses.org/listrules.html For help, send mail to the list administrators: Scott Douglas emcp...@ptcnh.net Mike Cantwell mcantw...@ieee.org For policy questions, send mail to: Jim Bacher j.bac...@ieee.org David Heald dhe...@gmail.com - This message is from the IEEE Product Safety Engineering Society emc-pstc discussion list. To post a message to the list, send your e-mail to emc-p...@ieee.org All emc-pstc postings are archived and searchable on the web at http://www.ieeecommunities.org/emc-pstc Graphics (in well-used formats), large files, etc. can be posted to that URL. Website: http://www.ieee-pses.org/ Instructions: http://listserv.ieee.org/request/user-guide.html List rules: http://www.ieee-pses.org/listrules.html For help, send mail to the list administrators: Scott Douglas emcp...@ptcnh.net Mike Cantwell mcantw...@ieee.org For policy questions, send mail to: Jim Bacher j.bac...@ieee.org David Heald dhe...@gmail.com
RE: Critical Components
Hello Doug, It is nearly impossible to specify classes of components that are always safety critical. What makes a component critical is its purpose. Is it part of a safeguard that protects somebody from a hazard? Take a look at Rich Nute’s column in the June 2007 newsletter for the Product Safety Engineering Society. It covers the subject quite well. http://ewh.ieee.org/soc/pses/Downloads/newsletters/07V3N2.pdf Ted Eckert Compliance Engineer Microsoft Corporation ted.eck...@microsoft.com The opinions expressed are my own and do not necessarily reflect those of my employer. From: Doug Kramer [mailto:dkra...@nceelabs.com] Sent: Thursday, November 20, 2008 6:43 AM To: EMC-PSTC@LISTSERV.IEEE.ORG Subject: Critical Components Are there any IEC (or other accepted references) documents that define what constitutes “critical components” in terms of product safety? What drives calling out a part on a “critical components” list? I would contend that it is any component of a system where the removal or substitution could change the compliance of the product relative to the applicable safety standard. Any thoughts? Doug Kramer P Please consider the environment before printing this e-mail. - This message is from the IEEE Product Safety Engineering Society emc-pstc discussion list. To post a message to the list, send your e-mail to emc-p...@ieee.org All emc-pstc postings are archived and searchable on the web at http://www.ieeecommunities.org/emc-pstc Graphics (in well-used formats), large files, etc. can be posted to that URL. Website: http://www.ieee-pses.org/ Instructions: http://listserv.ieee.org/request/user-guide.html List rules: http://www.ieee-pses.org/listrules.html For help, send mail to the list administrators: Scott Douglas emcp...@ptcnh.net Mike Cantwell mcantw...@ieee.org For policy questions, send mail to: Jim Bacher j.bac...@ieee.org David Heald dhe...@gmail.com - This message is from the IEEE Product Safety Engineering Society emc-pstc discussion list. To post a message to the list, send your e-mail to emc-p...@ieee.org All emc-pstc postings are archived and searchable on the web at http://www.ieeecommunities.org/emc-pstc Graphics (in well-used formats), large files, etc. can be posted to that URL. Website: http://www.ieee-pses.org/ Instructions: http://listserv.ieee.org/request/user-guide.html List rules: http://www.ieee-pses.org/listrules.html For help, send mail to the list administrators: Scott Douglas emcp...@ptcnh.net Mike Cantwell mcantw...@ieee.org For policy questions, send mail to: Jim Bacher j.bac...@ieee.org David Heald dhe...@gmail.com
Re: Critical Components
In message 79b6babf7ce2914591e1c45c7ed086fa0c9...@chiefwiggum.nceelabs.org, dated Thu, 20 Nov 2008, Doug Kramer dkra...@nceelabs.com writes: I would contend that it is any component of a system where the removal or substitution could change the compliance of the product relative to the applicable safety standard. That's it. As long as 'could' isn't interpreted as 'could, even with infinitesimal probability'. The term seems not to be used in IEC standards but was much used by test-houses in the third-party testing (SEMKO etc.) era. -- OOO - Own Opinions Only. Try www.jmwa.demon.co.uk and www.isce.org.uk Either we are causing global warming, in which case we may be able to stop it, or natural variation is causing it, and we probably can't stop it. You choose! John Woodgate, J M Woodgate and Associates, Rayleigh, Essex UK - This message is from the IEEE Product Safety Engineering Society emc-pstc discussion list. To post a message to the list, send your e-mail to emc-p...@ieee.org All emc-pstc postings are archived and searchable on the web at: http://www.ieeecommunities.org/emc-pstc Graphics (in well-used formats), large files, etc. can be posted to that URL. Website: http://www.ieee-pses.org/ Instructions: http://listserv.ieee.org/request/user-guide.html List rules: http://www.ieee-pses.org/listrules.html For help, send mail to the list administrators: Scott Douglas emcp...@ptcnh.net Mike Cantwell mcantw...@ieee.org For policy questions, send mail to: Jim Bacher: j.bac...@ieee.org David Heald: dhe...@gmail.com
Testing products with network cables
Good morning, I need to perform radiated emissions tests on a product with ethernet cables, but I'm not sure what the test setup should be. The equipment being tested needs an ethernet connection to auxiliary equipment (AE) that is not a part of the test. I seem to remember discussions on the list a few years ago concerning routing ethernet cables out of the test area, and isolating them using ferrite cores. However, after looking at the radiated test setup shown in EN55022:2006+A1:2007, I don't see references to cables leaving the test area. 1) Does the AE have to be in the test area, or can it be moved away? 2) If it is moved out of the test area, does the cable need any ferrite cores or ISNs? I'd appreciate pointers to the relevant clauses. Thanks, Pat Lawler EMC Engineer SL Power Electronics Corp. - This message is from the IEEE Product Safety Engineering Society emc-pstc discussion list. To post a message to the list, send your e-mail to emc-p...@ieee.org All emc-pstc postings are archived and searchable on the web at: http://www.ieeecommunities.org/emc-pstc Graphics (in well-used formats), large files, etc. can be posted to that URL. Website: http://www.ieee-pses.org/ Instructions: http://listserv.ieee.org/request/user-guide.html List rules: http://www.ieee-pses.org/listrules.html For help, send mail to the list administrators: Scott Douglas emcp...@ptcnh.net Mike Cantwell mcantw...@ieee.org For policy questions, send mail to: Jim Bacher: j.bac...@ieee.org David Heald: dhe...@gmail.com
EMI Receivers
Hello, I'm looking to purchase an EMI receiver for use in a 5 meter chamber. Does anyone recommend a certain model? I would want one that has at least a frequency range from 150kHz to 18GHz so one unit can be used for radiated and conducted emission measurements. I'm looking for a unit that can be calibrated by a local accredited calibration lab. I believe all RS receivers need to be sent to them for calibration, which there would be risk and time involved in shipping. Thanks, Tim Pierce One site has it all. Your email accounts, your social networks, and the things you love. Try the new AOL.com http://p .atwola.com/promoclk/10075x12129629 9x1200825291/aol?redir=http://www.aol.c m/?optin=new-dp%26icid=aolcom40vanity%26ncid=emlcntaolcom0001 today! - This message is from the IEEE Product Safety Engineering Society emc-pstc discussion list. To post a message to the list, send your e-mail to emc-p...@ieee.org All emc-pstc postings are archived and searchable on the web at http://www.ieeecommunities.org/emc-pstc Graphics (in well-used formats), large files, etc. can be posted to that URL. Website: http://www.ieee-pses.org/ Instructions: http://listserv.ieee.org/request/user-guide.html List rules: http://www.ieee-pses.org/listrules.html For help, send mail to the list administrators: Scott Douglas emcp...@ptcnh.net Mike Cantwell mcantw...@ieee.org For policy questions, send mail to: Jim Bacher j.bac...@ieee.org David Heald dhe...@gmail.com
Re: EMI Receivers
In message d4e.3f85a8f3.36571...@aol.com, dated Thu, 20 Nov 2008, emcp...@aol.com writes: I'm looking to purchase an EMI receiver for use in a 5 meter chamber. Does anyone recommend a certain model? I would want one that has at least a frequency range from 150kHz to 18GHz so one unit can be used for radiated and conducted emission measurements. If you had two, with overlapping ranges, you wouldn't be entirely scuppered when one of them fails or has to go away for calibration. There is likely to be a lot of 'nearly-new' about at good prices, due to the present unfortunate situation. -- OOO - Own Opinions Only. Try www.jmwa.demon.co.uk and www.isce.org.uk Either we are causing global warming, in which case we may be able to stop it, or natural variation is causing it, and we probably can't stop it. You choose! John Woodgate, J M Woodgate and Associates, Rayleigh, Essex UK - This message is from the IEEE Product Safety Engineering Society emc-pstc discussion list. To post a message to the list, send your e-mail to emc-p...@ieee.org All emc-pstc postings are archived and searchable on the web at: http://www.ieeecommunities.org/emc-pstc Graphics (in well-used formats), large files, etc. can be posted to that URL. Website: http://www.ieee-pses.org/ Instructions: http://listserv.ieee.org/request/user-guide.html List rules: http://www.ieee-pses.org/listrules.html For help, send mail to the list administrators: Scott Douglas emcp...@ptcnh.net Mike Cantwell mcantw...@ieee.org For policy questions, send mail to: Jim Bacher: j.bac...@ieee.org David Heald: dhe...@gmail.com
RE: What's the deal with Wire Nuts?
Flexible cord is not to be used where a permanent wiring system is required, except under certain exceptions. The concern is that flexible cord is not as robust as wiring in conduit or wiring in walls, and over the long-term exposure that permanent installation implies, a flexible cord could become damaged and hazardous. Canada: CEC part 1 2006 rule 4-010 US: NEC 2008 rule 400.7 Jim Eichner, P.Eng. Compliance Engineering Manager Xantrex Technology Inc. e-mail: jim.eich...@xantrex.com web: www.xantrex.com http://www.xantrex.com/ Confidentiality Notice: This email message, including any attachments, is for the sole use of the intended recipient(s) and may contain confidential and privileged information. Any unauthorized review, use, disclosure or distribution is prohibited. If you are not the intended recipient, please contact the sender by reply e-mail and destroy all copies of the original message. From: emc-p...@ieee.org [mailto:emc-p...@ieee.org] On Behalf Of Haynes, Tim (SELEX GALILEO, UK) Sent: Thursday, November 20, 2008 1:03 AM To: Don Gies; EMC-PSTC@LISTSERV.IEEE.ORG Subject: RE: What's the deal with Wire Nuts? Don, Hi. In your response to Brian you said... However, written into the body of the IEC 60950-1 and EN 60950-1 (and other national derivative standards) is a wiring method for permanent connection to the mains not acceptable in the US and Canada – the use of a non-detachable power supply cord for permanent connection. Can you please supply to me the reference that prohibits that wiring method in US and Canada? Regards Tim Tim Haynes A1N10 Electromagnetic Engineering Specialist SELEX Sensors and Airborne Systems 300 Capability Green Luton LU1 3PG ( Tel : +44 (0)1582 886239 7 Fax : +44 (0)1582 795863 ) Mob: +44 (0)7703 559 310 * E-mail : tim.hay...@selexgalileo.com P Please consider the environment before printing this email. There are 10 types of people in the world-those who understand binary and those who don't. J. Paxman SELEX Sensors and Airborne Systems Limited Registered Office: Sigma House, Christopher Martin Road, Basildon, Essex SS14 3EL A company registered in England Wales. Company no. 02426132 This email and any attachments are confidential to the intended recipient and may also be privileged. If you are not the intended recipient please delete it from your system and notify the sender. You should not copy it or use it for any purpose nor disclose or distribute its contents to any other person. - This message is from the IEEE Product Safety Engineering Society emc-pstc discussion list. To post a message to the list, send your e-mail to emc-p...@ieee.org All emc-pstc postings are archived and searchable on the web at http://www.ieeecommunities.org/emc-pstc Graphics (in well-used formats), large files, etc. can be posted to that URL. Website: http://www.ieee-pses.org/ Instructions: http://listserv.ieee.org/request/user-guide.html List rules: http://www.ieee-pses.org/listrules.html For help, send mail to the list administrators: Scott Douglas emcp...@ptcnh.net Mike Cantwell mcantw...@ieee.org For policy questions, send mail to: Jim Bacher j.bac...@ieee.org David Heald dhe...@gmail.com - This message is from the IEEE Product Safety Engineering Society emc-pstc discussion list. To post a message to the list, send your e-mail to emc-p...@ieee.org All emc-pstc postings are archived and searchable on the web at http://www.ieeecommunities.org/emc-pstc Graphics (in well-used formats), large files, etc. can be posted to that URL. Website: http://www.ieee-pses.org/ Instructions: http://listserv.ieee.org/request/user-guide.html List rules: http://www.ieee-pses.org/listrules.html For help, send mail to the list administrators: Scott Douglas emcp...@ptcnh.net Mike Cantwell mcantw...@ieee.org For policy questions, send mail to: Jim Bacher j.bac...@ieee.org David Heald dhe...@gmail.com
RE: Testing products with network cables
It depends if you want to do : 1/ measure the emissions of EUT 2/ perform a compliance test according to the standard, 1. Unless you are sure about the AE emissions, move it outside the room. You want to make a test on the EUT, not on AE !!! I never truly understood the EN 55022 table approach that seems to be written for desktop PC only (especially the drawings make no sense most of the time) and ignores the developments in CISPR16 regarding test volumes and cabling lay-out during testing. STP cable can be used to protrude the rooms walls on connection to the screen with any suitable screened bulkhead connector. UTP cable requires ferrites and preferably a quadruple CM coil sold for this purpose. They are small enough to be mount into a DB9 connector shell, and I use one inside and one outside the wall (plus ferrites). This gives more than acceptable results, even on 100M Note that the UTP cable in the room will emit the data transferred if the EUT-side has any imperfect balance. Perfectly balanced EUT will show almost no cable radiation. To see the data, special software may be required to get enough data traffic. You may apply a ISN after the required exposure length to prevent any excess lengths from radiating. 2. If you are required to perform compliance tests however, you will have to stick to EN 55022 and place the AE on the table next to EUT : Regards, Ing. Gert Gremmen ce-test, qualified testing bv Van: emc-p...@ieee.org [mailto:emc-p...@ieee.org] Namens pat.law...@slpower.com Verzonden: donderdag 20 november 2008 19:28 Aan: emc-p...@ieee.org Onderwerp: Testing products with network cables Good morning, I need to perform radiated emissions tests on a product with ethernet cables, but I'm not sure what the test setup should be. The equipment being tested needs an ethernet connection to auxiliary equipment (AE) that is not a part of the test. I seem to remember discussions on the list a few years ago concerning routing ethernet cables out of the test area, and isolating them using ferrite cores. However, after looking at the radiated test setup shown in EN55022:2006+A1:2007, I don't see references to cables leaving the test area. 1) Does the AE have to be in the test area, or can it be moved away? 2) If it is moved out of the test area, does the cable need any ferrite cores or ISNs? I'd appreciate pointers to the relevant clauses. Thanks, Pat Lawler EMC Engineer SL Power Electronics Corp. - This message is from the IEEE Product Safety Engineering Society emc-pstc discussion list. To post a message to the list, send your e-mail to emc-p...@ieee.org All emc-pstc postings are archived and searchable on the web at: http://www.ieeecommunities.org/emc-pstc Graphics (in well-used formats), large files, etc. can be posted to that URL. Website: http://www.ieee-pses.org/ Instructions: http://listserv.ieee.org/request/user-guide.html List rules: http://www.ieee-pses.org/listrules.html For help, send mail to the list administrators: Scott Douglas emcp...@ptcnh.net Mike Cantwell mcantw...@ieee.org For policy questions, send mail to: Jim Bacher: j.bac...@ieee.org David Heald: dhe...@gmail.com - This message is from the IEEE Product Safety Engineering Society emc-pstc discussion list. To post a message to the list, send your e-mail to emc-p...@ieee.org All emc-pstc postings are archived and searchable on the web at: http://www.ieeecommunities.org/emc-pstc Graphics (in well-used formats), large files, etc. can be posted to that URL. Website: http://www.ieee-pses.org/ Instructions: http://listserv.ieee.org/request/user-guide.html List rules: http://www.ieee-pses.org/listrules.html For help, send mail to the list administrators: Scott Douglas emcp...@ptcnh.net Mike Cantwell mcantw...@ieee.org For policy questions, send mail to: Jim Bacher: j.bac...@ieee.org David Heald: dhe...@gmail.com
Re: Testing products with network cables
In message FCA549BE3ECF9D4CB8CB8576837EA489053362@ZEUS.cetest.local, dated Thu, 20 Nov 2008, Gert Gremmen g.grem...@cetest.nl writes: f you are required to perform compliance tests however, you will have to stick to EN 55022 and place the AE on the table next to EUT : I'm not sure about that. A desktop PC doesn't work without a keyboard and display, so they should be tested as one 'product' (a 'system' in the language of the 1989 EMC Directive). But that doesn't apply to everything that is within the scope of the standard. You wouldn't test a network printer, for example, surrounded by other equipment because it doesn't need them close to it to work correctly. They can be outside the test-space. -- OOO - Own Opinions Only. Try www.jmwa.demon.co.uk and www.isce.org.uk Either we are causing global warming, in which case we may be able to stop it, or natural variation is causing it, and we probably can't stop it. You choose! John Woodgate, J M Woodgate and Associates, Rayleigh, Essex UK - This message is from the IEEE Product Safety Engineering Society emc-pstc discussion list. To post a message to the list, send your e-mail to emc-p...@ieee.org All emc-pstc postings are archived and searchable on the web at: http://www.ieeecommunities.org/emc-pstc Graphics (in well-used formats), large files, etc. can be posted to that URL. Website: http://www.ieee-pses.org/ Instructions: http://listserv.ieee.org/request/user-guide.html List rules: http://www.ieee-pses.org/listrules.html For help, send mail to the list administrators: Scott Douglas emcp...@ptcnh.net Mike Cantwell mcantw...@ieee.org For policy questions, send mail to: Jim Bacher: j.bac...@ieee.org David Heald: dhe...@gmail.com
