Re: EMC test chamber -- Reverberation and Others
Thanks Barry for the suggestion but I know nothing about reverberation chambers, possibly somone could comment on the merits of RC over AC. Ray Levasseur EMC Compliance Creo Products From: b...@anritsu.com (Bailin Ma) Reply-To: b...@anritsu.com (Bailin Ma) To: emc-p...@ieee.org Subject: EMC test chamber -- Reverberation and Others Date: Fri, 13 Aug 1999 9:13:21 PDT Ray, Did you consider using Reverberation Chamber (RC) instead of semi-anechoic chamber for pre-compliance? It seems to me that RC technique has become practically applicable for both emission and immunity tests. It's less expensive. Official EMC standards would accept it in a couple of years. IEC 61000-4-21: Reverberation Chamber is circulating for comments. I know little about RC and expect some knowledgeable colleagues to make comments. Barry Ma Anritsu Company -Original Message- From: Ray Levasseur [mailto:ray_levass...@hotmail.com] Sent: Wednesday, August 11, 1999 2:44 PM To: emc-p...@majordomo.ieee.org Subject: Wanted:EMC test chamber Hi Group, I am setting up pre-compliance EMC testing at our facility and need some equipment to complete my setup. I was planning on a 3m shielded room with the possibility of making it semi-anechoic when the budget allows. Our products are large (relative to normal ITE equipment) with the largest that would be tested in the chamber 10ft wide X 6ft long X 3ft high. I have most of the equipment I need to do the tests for EN 55022 and EN 50082. I need a motorized antenna mast that goes from 1-4m and a chamber. If anyone could direct me to a person or company selling the chamber or antenna mast I would greatly appreciate it. Also I would like to get some feedback on the Cassper virtual chamber and if anyone has used it or has comments on the usability of such a system. Thanks, Ray Levasseur EMC Compliance, Creo Products - 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). __ Get Your Private, Free Email at http://www.hotmail.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: Question on internal ESD testing
Charles, This is a contentious subject for us due to the time it takes to thoroughly test a large product, so I'd be interested in hearing other's opinions and practices. A scenario where ESD can cause a genuine problem (in our business) is when someone walks across a room to add paper to a printer tray. In some machines, the unit will be in standby mode. In others, it may continue printing from a different tray or cabinet. In either case, a discharge to the internal metal parts of the paper tray could conceivably cause problems we would consider failures (and have). Jack Cook EMC Engineer, Xerox Corp. jack.c...@cax.usa.xerox.com (310)333-5214 -Original Message- From: Grasso, Charles (Chaz) [mailto:gra...@louisville.stortek.com] Sent: Friday, August 13, 1999 9:35 AM To: 'EMC Group' Subject: Question on internal ESD testing Hello, Does anyone in this august group apply ESD discharges INTERNAL to a product as required by EN55024. I consider this just a tad egregious - don't you? Thank you Charles Grasso Advisory Engineer StorageTek 2270Sth 88th Street Louisville CO 80027 M/S 4247. Tel:303-673-2908 Fax:303-661-7115 email:gra...@louisville.stortek.com Web Site: http://www.ewh.ieee.org/r5/denver/rockymountainemc/ - 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: Question on internal ESD testing
Is it reasonable to say that internal ESD testing should be performed in casual access areas as opposed to user maintenance areas? With PCs (for example) being designed for user service, one would have to expect these service persons to follow ESD maintenance procedures. Adding RAM, or functionality obviously reaches a point at which user service would not allow for ESD compliance. This could get a little gray in my opinion. Rick Busche Senior Engineer Evans Sutherland -Original Message- From: Jim Hulbert [mailto:hulbe...@pb.com] Sent: Friday, August 13, 1999 12:55 PM To: emc-p...@ieee.org Subject:Question on internal ESD testing Egregious? Not necessarily. For our products, we will discharge to internal parts that the user can come into contact with during normal operation or maintenance. For example, if the user is expected to open a cover to change an ink cartridge, remove a paper jam, or perform some other routine procedure, then we would discharge to the areas exposed to the operator when the cover is open. However, we would NOT discharge to an internal area that is not normally accessed by the operator, such as a cover that is only expected to be removed by a qualified service or repair person. Note that EN 55024 also states specifically that you are not expected to discharge to exposed connector pins. I guess that would, in fact, be egregious. Jim Hulbert Senior Engineer - EMC Pitney Bowes -- Forwarded by Jim Hulbert/MSD/US/PBI on 08/13/99 02:55 PM --- Grasso, Charles (Chaz) gra...@louisville.stortek.com on 08/13/99 12:34:33 PM Please respond to Grasso, Charles (Chaz) gra...@louisville.stortek.com To: 'EMC Group' emc-p...@majordomo.ieee.org cc:(bcc: Jim Hulbert/MSD/US/PBI) Subject: Question on internal ESD testing Hello, Does anyone in this august group apply ESD discharges INTERNAL to a product as required by EN55024. I consider this just a tad egregious - don't you? Thank you Charles Grasso Advisory Engineer StorageTek 2270Sth 88th Street Louisville CO 80027 M/S 4247. Tel:303-673-2908 Fax:303-661-7115 email:gra...@louisville.stortek.com Web Site: http://www.ewh.ieee.org/r5/denver/rockymountainemc/ - 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: Posters
Hi Mike, I'm not sure if they are still available, but you might still be able to get (free) a frequency allocation chart for the US (3kHz-300GHz) in full color from Omega Engineering. Very nice. It can be ordered on-line at: http://www.omega.com/literature/ Just click on domestic or international ordering and fill and click in the blanks. Best regards, Ron Pickard rpick...@hypercom.com Davis, Mike mike_da...@adc.com To: EMC-PSTC Regulatory E-Mail (E-mail) emc-p...@ieee.org Sent by: cc: owner-emc-pstc@majordomSubject: Posters o.ieee.org 08/13/99 06:33 AM Please respond to Davis, Mike I have an interest in knowing where to get EMI/EMC/Safety posters to hang up in and around my office. Does anyone of you know of what posters are available and from whom they may be ordered. I presently have two informative posters hanging on the walls of my office as follows: The CHASE guide to EMISSIONS IMMUNITY; Chase EMC, Inc., 230 Route 206, Building No.2, Flanders, New Jersey 07836, Tel 201 252-8001. USA Frequency Allocations 500kHz to 4GHz; Fair-rite Products Corp., One Commercial Row, Wallkill, NY 12589-0288. The information listed on these two poster are ferry useful as a quick reference. Some of you may have these posted already, because I have seen them in many test labs that I have used in the past. Thanks in advance. Regards, Michael S. Davis Compliance Engineer ADC Broadband Communications 203 630-5788 mike_da...@adc.com (See attached file: Davis, Mike.vcf) attachment: Davis,_Mike.vcf
RE: Question on internal ESD testing
Charles Any point that is accessible during either normal operation, or regular maintenance by an untrained person, is considered to be at risk due to an ESD event.(i.e. if the operator is required to change a ribbon then exposed areas should not be ESD sensitive, otherwise make it a service call). Trained service personnel and specially trained operators are not considered to be an ESD hazard, as it is assumed that they use ESD prevention practices.. John Mowbray -Original Message- From: Grasso, Charles (Chaz) [SMTP:gra...@louisville.stortek.com] Sent: Friday, August 13, 1999 12:35 PM To: 'EMC Group' Subject: Question on internal ESD testing Hello, Does anyone in this august group apply ESD discharges INTERNAL to a product as required by EN55024. I consider this just a tad egregious - don't you? Thank you Charles Grasso Advisory Engineer StorageTek 2270Sth 88th Street Louisville CO 80027 M/S 4247. Tel:303-673-2908 Fax:303-661-7115 email:gra...@louisville.stortek.com Web Site: http://www.ewh.ieee.org/r5/denver/rockymountainemc/ - 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).
Question on internal ESD testing
Egregious? Not necessarily. For our products, we will discharge to internal parts that the user can come into contact with during normal operation or maintenance. For example, if the user is expected to open a cover to change an ink cartridge, remove a paper jam, or perform some other routine procedure, then we would discharge to the areas exposed to the operator when the cover is open. However, we would NOT discharge to an internal area that is not normally accessed by the operator, such as a cover that is only expected to be removed by a qualified service or repair person. Note that EN 55024 also states specifically that you are not expected to discharge to exposed connector pins. I guess that would, in fact, be egregious. Jim Hulbert Senior Engineer - EMC Pitney Bowes -- Forwarded by Jim Hulbert/MSD/US/PBI on 08/13/99 02:55 PM --- Grasso, Charles (Chaz) gra...@louisville.stortek.com on 08/13/99 12:34:33 PM Please respond to Grasso, Charles (Chaz) gra...@louisville.stortek.com To: 'EMC Group' emc-p...@majordomo.ieee.org cc:(bcc: Jim Hulbert/MSD/US/PBI) Subject: Question on internal ESD testing Hello, Does anyone in this august group apply ESD discharges INTERNAL to a product as required by EN55024. I consider this just a tad egregious - don't you? Thank you Charles Grasso Advisory Engineer StorageTek 2270Sth 88th Street Louisville CO 80027 M/S 4247. Tel:303-673-2908 Fax:303-661-7115 email:gra...@louisville.stortek.com Web Site: http://www.ewh.ieee.org/r5/denver/rockymountainemc/ - 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: New ISO9000-2000
Nezam, New ISO9000 (-2000 ???) standards are not yet approved. I can send you current committee drafts, but keep in mind that those are still DRAFTS. Mirko Matejic The Foxboro Company -Original Message- From: Nezam Najafi [SMTP:nezam.naj...@madge.com] Sent: Friday, August 13, 1999 10:31 To: emc-p...@majordomo.ieee.org Subject: New ISO9000-2000 To All: Dose anyone have any information concerning a draft copy of ISO9000-2000 that will supersede ISO 9001 and ISO 9002. I do appreciate any response in advance. Regards, Nezam Najafi Sr. Compliance Engineer Madge Networks, Inc. 625 Industrial Way West Eatontown, NJ 07724 Voice: 732-460-6825 - 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: Posters
Ask and you shall receive!.. Seek and you shall find!.. EMC-PSTC has again been fruitful! Please Continue. (FERRY?... WHAT'S UP WIT DAT? ... Excuse my type-o in my previous message.) -Original Message- From: Davis, Mike Sent: Friday, August 13, 1999 9:33 AM To: EMC-PSTC Regulatory E-Mail (E-mail) Subject: Posters I have an interest in knowing where to get EMI/EMC/Safety posters to hang up in and around my office. Does anyone of you know of what posters are available and from whom they may be ordered. I presently have two informative posters hanging on the walls of my office as follows: The CHASE guide to EMISSIONS IMMUNITY; Chase EMC, Inc., 230 Route 206, Building No.2, Flanders, New Jersey 07836, Tel 201 252-8001. USA Frequency Allocations 500kHz to 4GHz; Fair-rite Products Corp., One Commercial Row, Wallkill, NY 12589-0288. The information listed on these two poster are ferry useful as a quick reference. Some of you may have these posted already, because I have seen them in many test labs that I have used in the past. Thanks in advance. Regards, Michael S. Davis Compliance Engineer ADC Broadband Communications 203 630-5788 mike_da...@adc.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: Question on internal ESD testing
Chaz, I think it depends on your product and how your customers will be using your equipment (due-diligence). To answer your question, YES, we do test internally. You know me; I enjoy everything in excess. I have never been one that has been satisfied testing only to the limit. If you test only one product to pass the requirements, where is your confidence? You either need to test more than one sample or test to a higher standard, only then can you have a level of confidence that your product truly passes the minimum requirements. I have already spoken with your partner in crime (Monrad) and am considering a joint effort to analyze the statistics of ESD and what a product can really expect to see in a lifetime. To this end, I would like to ask the group a question. I have heard that IBM (and possibly others) has done studies on this exact subject. Does anyone have knowledge of were this information can be found? Kevin J. Hight -- Regulatory Compliance Engineer Exabyte Corporation 1777 Exposition Drive, Building #7 Boulder, Colorado 80301 Phone: 303-417-5534; Fax: 303-417-5710 Pager: 303-855-7029; Email: kev...@exabyte.com -Original Message- From: Grasso, Charles (Chaz) [mailto:gra...@louisville.stortek.com] Sent: Friday, August 13, 1999 10:35 AM To: 'EMC Group' Subject: Question on internal ESD testing Hello, Does anyone in this august group apply ESD discharges INTERNAL to a product as required by EN55024. I consider this just a tad egregious - don't you? Thank you Charles Grasso Advisory Engineer StorageTek 2270Sth 88th Street Louisville CO 80027 M/S 4247. Tel:303-673-2908 Fax:303-661-7115 email:gra...@louisville.stortek.com Web Site: http://www.ewh.ieee.org/r5/denver/rockymountainemc/ - 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: Equipment designed and manufactured for use in-house
Carlos, As you are in the UK you might want to talk to your Home Authority Trading Standards Officer. Many of them can carry out screen test level assessments at almost no cost. They will also give advice on interpreting areas like this for free. A word of caution, however, get their feedback in writing. You can then use this as part of your defence if ever necessary. It is two years since I left the UK, do the Duckworths still run the Rovers Return? Alan _ Alan Brewster Compliance Certification Services 1366 Bordeaux Drive Sunnyvale, CA 94089-1005 Tel: 408-752-8166 ext. 122 Fax: 408-752-8168 e-mail: abrews...@ccsemc.com http://www.ccsemc.com -Original Message- From: carlos.perk...@eu.effem.com [SMTP:carlos.perk...@eu.effem.com] Sent: Thursday, August 12, 1999 11:22 PM To: emc-p...@majordomo.ieee.org Subject: Equipment designed and manufactured for use in-house Dear All, A question from UK: Does anyone have a strategy for handling the Low Voltage and EMC Directive requirements relating to equipment made for use in-house? By this, I mean test boxes, power supplies, break-out boxes, etc. These products are not meant to be offered for sale (ie not 'placed on the market'), but have been 'taken into service' by being switched on and used. I think, therefore, that the protection requirements of the Directives must be met, but CE marking is not necessary. In terms of Safety, I think EN 60950 and EN 61010-1 are relevant. Does anyone have a view on this? Cheers, Carlos Perkins - 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: National Safety Requirements?????
Thanks for responding... My question was too open. I am aware of these facts and aware that there are many standards from UL, NEC, OSHA etc. Someone who seemed to believe such a edict was sent out resently asked me to check to I asked this group. Maybe this is just a very bad joke from someone who really doesn't know what he is asking. There is apparently no new comprehensive ruling going on in the US. Thanks all for your comments, kt From: rpick...@hypercom.com Subject: Re: National Safety Requirements? To: Kathy Toy kathy@eng.sun.com Cc: emc-p...@majordomo.ieee.org Date: Fri, 13 Aug 1999 09:22:26 -0700 X-Priority: 3 (Normal) X-MIMETrack: Serialize by Router on AZPHXN01/Hypercom/US(Release 5.0.1|July 16, 1999) at 08/13/99 09:22:07 AM MIME-Version: 1.0 Kathy, To what product category would this National Safety Standard apply? Or, would it apply comprehensively accross the board for all products? I hope from this and given the enormity of product categories that you will realize that there can never be a single safety standard that would apply to every product. I believe that what you might be looking for is a federal requirement for safety certification (or listing, or approval, etc. etc.). Such a requirement does, in fact, exist and can be found in 29CFR1910.399. This CFR is maintained by OSHA, the Occupational Safety Health Administration which is run by the US Department of Labor. You can find the whole 29CFR1910 on the web at: http://www.osha-slc.gov/OshStd_toc/OSHA_Std_toc_1910_SUBPART_S.html Please keep in mind that these particular OSHA regulations pertain only to those products intended to be used in the workplace in the USA, whatever setting that may be. From this CFR you can determine the preferred course of action. I hope this answers your question. BTW, does anyone have similar federal requirements for other environments, such as residential? Please no comments about Big Brother watching. ;- ; - Best regards, Ron Pickard rpick...@hypercom.com Kathy Toy kathy@eng.sun.comTo: emc-p...@majordomo.ieee.org Sent by: cc: kathy@eng.sun.com owner-emc-pstc@majordomSubject: National Safety Requirements? o.ieee.org 08/12/99 04:15 PM Please respond to Kathy Toy HI: Is there a new National Safety Standard for the US? A friend of mine came by and asked this. It has been my understanding that most large cities and counties require some type of safety approval for equipment. I have not heard that there is an actual US safety requirment. If there is one, where would this edict come from and what would be the standard (NEC)?? Or is this just one of these strange rumors that comes around now and again? Thanks to anyone who might know. kt _/_/_/ _/_/ _/ _/ Kathy Toy _/ _/_/ _/_/ _/ Safety Compliance Engineer _/_/_/ _/_/ _/ _/ _/ Office/Voice Mail:(650)786-3210 _/ _/_/ _/ _/_/ Dept. FAX: (650)786-3723 _/_/_/ _/_/_/ _/ _/ Email:kathy@eng.sun.com M I C R O S Y S T E M S - 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). _/_/_/ _/_/ _/ _/
New ISO9000-2000
To All: Dose anyone have any information concerning a draft copy of ISO9000-2000 that will supersede ISO 9001 and ISO 9002. I do appreciate any response in advance. Regards, Nezam Najafi Sr. Compliance Engineer Madge Networks, Inc. 625 Industrial Way West Eatontown, NJ 07724 Voice: 732-460-6825 - 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: Posters
Omega provided me with a United States Frequency allocation chart which I have hanging up in my open area test site lab area. The poster is colorful, draws attention from everyone, and is informative. Try www.omega.com, and click on free literature for more info. -- Sincerely, Randall T. Flinders EMC Engineer Emulex Network Systems V: (714) 513-8012 F: (714) 513-8265 randall.flind...@emulex.com __ __ __\ /__ __/ \__ E M U L E X Chairman Orange County Chapter IEEE EMC Society r.flind...@ieee.org -- From: Davis, Mike Sent: Friday, August 13, 1999 6:33 AM To: EMC-PSTC Regulatory E-Mail (E-mail) Subject:Posters File: Davis, Mike.vcf I have an interest in knowing where to get EMI/EMC/Safety posters to hang up in and around my office. Does anyone of you know of what posters are available and from whom they may be ordered. I presently have two informative posters hanging on the walls of my office as follows: The CHASE guide to EMISSIONS IMMUNITY; Chase EMC, Inc., 230 Route 206, Building No.2, Flanders, New Jersey 07836, Tel 201 252-8001. USA Frequency Allocations 500kHz to 4GHz; Fair-rite Products Corp., One Commercial Row, Wallkill, NY 12589-0288. The information listed on these two poster are ferry useful as a quick reference. Some of you may have these posted already, because I have seen them in many test labs that I have used in the past. Thanks in advance. Regards, Michael S. Davis Compliance Engineer ADC Broadband Communications 203 630-5788 mike_da...@adc.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).
Question on internal ESD testing
Hello, Does anyone in this august group apply ESD discharges INTERNAL to a product as required by EN55024. I consider this just a tad egregious - don't you? Thank you Charles Grasso Advisory Engineer StorageTek 2270Sth 88th Street Louisville CO 80027 M/S 4247. Tel:303-673-2908 Fax:303-661-7115 email:gra...@louisville.stortek.com Web Site: http://www.ewh.ieee.org/r5/denver/rockymountainemc/ - 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).
EN60335 verses EN61010-1
Our company manufacturers laboratory equipment so we perform safety tests and evaluation based on EN61010-1 (Safety of Laboratory equipment). My understanding is that we can use components, such as Power Supplies, in our products that has been tested to EN60950 (Safety of IT Equipment) without additional safety evaluation. Our engineering department wants to use a small water circulation pump (aquarium pump) in one of our products. This pump has the CE mark. The DOC says it was evaluated to EN60335 (Safety of Household electrical appliances). If we use this pump in accordance to the manufacturer's specifications can we use it in a laboratory instrument without additional evaluation or testing of the pump? Regards, Brian Kunde Group Leader Compliance Testing Center LECO Corporation 3000 Lakeview Ave. St. Joseph, MI 49085 (616) 982-5423 phone (616) 982-8964 fax brian_ku...@leco.com bkundew...@qtm.net
EMC test chamber -- Reverberation and Others
Ray, Did you consider using Reverberation Chamber (RC) instead of semi-anechoic chamber for pre-compliance? It seems to me that RC technique has become practically applicable for both emission and immunity tests. It's less expensive. Official EMC standards would accept it in a couple of years. IEC 61000-4-21: Reverberation Chamber is circulating for comments. I know little about RC and expect some knowledgeable colleagues to make comments. Barry Ma Anritsu Company -Original Message- From: Ray Levasseur [mailto:ray_levass...@hotmail.com] Sent: Wednesday, August 11, 1999 2:44 PM To: emc-p...@majordomo.ieee.org Subject: Wanted:EMC test chamber Hi Group, I am setting up pre-compliance EMC testing at our facility and need some equipment to complete my setup. I was planning on a 3m shielded room with the possibility of making it semi-anechoic when the budget allows. Our products are large (relative to normal ITE equipment) with the largest that would be tested in the chamber 10ft wide X 6ft long X 3ft high. I have most of the equipment I need to do the tests for EN 55022 and EN 50082. I need a motorized antenna mast that goes from 1-4m and a chamber. If anyone could direct me to a person or company selling the chamber or antenna mast I would greatly appreciate it. Also I would like to get some feedback on the Cassper virtual chamber and if anyone has used it or has comments on the usability of such a system. Thanks, Ray Levasseur EMC Compliance, Creo Products - 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).
Posters
Hi Mike Regarding the Chase (now Schaffner EMC!) immunity emissions posters (there are now one of each!) your local Schaffner EMC Test RF products representative should have them. If you need to, you can find out their phone etc. by visiting Schaffner's Web site at www.schaffner.com. Regards Tony O'Hara LARCTEC Marketing Colorado - 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: Equipment designed and manufactured for use in-house
From what I have read in various standards (national International - and I v'e read a few in my 17 years as a compliance engineer) these items are generally exempt from meeting these requirements. Obviously, as someone mentioned in an earlier message, Health Safety laws require that the employee be safe. Therefore, (I would do it anyway - laws or not) any test jig should always be designed with product safety standards in mind anyway. As far as EMC is concerned, you obviously don't want the test jig to interfere with other nearby equipment. Your general EMC design practices should be used even with test jigs. Personally, I don't change my design practices because it is a test jig. John A. Juhasz Product Qualification Compliance Engr. Fiber Options, Inc. 80 Orville Dr. Suite 102 Bohemia, NY 11716 USA Tel: 516-370-1324 Fax: 516-567-8322 -Original Message- From: Colgan, Chris [mailto:chris.col...@tagmclarenaudio.com] Sent: Friday, August 13, 1999 6:14 AM To: emc-p...@majordomo.ieee.org Subject: RE: Equipment designed and manufactured for use in-house I don't know whether the LV and EMC Directives apply to in house manufcatured test boxes, test jigs and the like. One thing I do know is that if I told my manager that we had to test all our stuff and either chuck out or modify anything that didn't comply he'd string me up Chris Colgan EMC Safety TAG McLaren Audio Ltd mailto:chris.col...@tagmclarenaudio.com -Original Message- From: carlos.perk...@eu.effem.com [SMTP:carlos.perk...@eu.effem.com] Sent: 13 August 1999 07:22 To: emc-p...@majordomo.ieee.org Subject: Equipment designed and manufactured for use in-house Dear All, A question from UK: Does anyone have a strategy for handling the Low Voltage and EMC Directive requirements relating to equipment made for use in-house? By this, I mean test boxes, power supplies, break-out boxes, etc. These products are not meant to be offered for sale (ie not 'placed on the market'), but have been 'taken into service' by being switched on and used. I think, therefore, that the protection requirements of the Directives must be met, but CE marking is not necessary. In terms of Safety, I think EN 60950 and EN 61010-1 are relevant. Does anyone have a view on this? Cheers, Carlos Perkins - 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). = Authorised on 08/13/99 at 11:17:09; code 37453441765A44CC. The contents of this E-mail are confidential and for the exclusive use of the intended recipient. If you receive this E-mail in error, please delete it from your system immediately and notify us either by E-mail, telephone or fax. You should not copy, forward or otherwise disclose the content of the E-mail. TAG McLaren Audio Ltd, Ermine Business Park Huntingdon, Cambs, PE18 6XY Telephone : 01480 415600 (+44 1480 415600) Facsimile : 01480 52159 (+44 1480 52159) - 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: Equipment designed and manufactured for use in-house
Since this is a UK question, The Provision and Use of Work Equipment Regulations 1992 (SI 1992 No. 29323) would seem to apply. It states under Conformity with Community requirements 10 - (1) Every employer shall ensure that any item of work equipment provided for use in the premises or undertaking of the employer complies with any enactment (whether in an Act or instrument) which implements in Great Britain any of the relevant Community directives listed in Schedule 1 which is applicable to that item of work equipment. In Schedule 1 are the LVD, machinery and EMC directives, and a lot more. (And dare I ask, does a piece of equipment which complies with an old revision of a standard which has been removed from the OJ, continue to comply with the LVD ??) You could always argue that your equipment meets the essential requirements, spelt out in the Work Equipment Regulations, since the LVD only applies tp equipment placed on the market. Regards, John Crabb, Development Excellence (Product Safety) , NCR Financial Solutions Group Ltd., Kingsway West, Dundee, Scotland. DD2 3XX E-Mail :john.cr...@scotland.ncr.com Tel: +44 (0)1382-592289 (direct ). Fax +44 (0)1382-622243. VoicePlus 6-341-2289. -Original Message- From: Colgan, Chris [SMTP:chris.col...@tagmclarenaudio.com] Sent: 13 August 1999 11:14 To: emc-p...@majordomo.ieee.org Subject: RE: Equipment designed and manufactured for use in-house I don't know whether the LV and EMC Directives apply to in house manufcatured test boxes, test jigs and the like. One thing I do know is that if I told my manager that we had to test all our stuff and either chuck out or modify anything that didn't comply he'd string me up Chris Colgan EMC Safety TAG McLaren Audio Ltd mailto:chris.col...@tagmclarenaudio.com -Original Message- From: carlos.perk...@eu.effem.com [SMTP:carlos.perk...@eu.effem.com] Sent: 13 August 1999 07:22 To: emc-p...@majordomo.ieee.org Subject:Equipment designed and manufactured for use in-house Dear All, A question from UK: Does anyone have a strategy for handling the Low Voltage and EMC Directive requirements relating to equipment made for use in-house? By this, I mean test boxes, power supplies, break-out boxes, etc. These products are not meant to be offered for sale (ie not 'placed on the market'), but have been 'taken into service' by being switched on and used. I think, therefore, that the protection requirements of the Directives must be met, but CE marking is not necessary. In terms of Safety, I think EN 60950 and EN 61010-1 are relevant. Does anyone have a view on this? Cheers, Carlos Perkins - 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). = Authorised on 08/13/99 at 11:17:09; code 37453441765A44CC. The contents of this E-mail are confidential and for the exclusive use of the intended recipient. If you receive this E-mail in error, please delete it from your system immediately and notify us either by E-mail, telephone or fax. You should not copy, forward or otherwise disclose the content of the E-mail. TAG McLaren Audio Ltd, Ermine Business Park Huntingdon, Cambs, PE18 6XY Telephone : 01480 415600 (+44 1480 415600) Facsimile : 01480 52159 (+44 1480 52159) - 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).
Meters and Monitors for ELF-VLF
Hello Group, I need some low frequency meters covering the ELF/VLF spectrum from 0 Hertz to 400-500kHz for both electric and magnetic fields. The meters must be TRUE RMS responding for accurate response to varied waveforms with both isotropic and single-axis sensors. I need to measure in the ambient the fields produced by: transmission lines (50/60Hz), computer monitors, video displays, power lines and line-powered equipment, industrial heat treating equipment, home appliances, etc. So, what I really need is contacts of some manufacturers of this kind of equipment. Please, reply the e-mail directly to me. Thanks in advance for the ones who can help. Best Regards Muriel -- == Muriel Bittencourt de Liz GRUCAD - Conception Analysis of Electromagnetic Devices Group Federal University of Santa Catarina PO Box: 476 ZIP: 88040-900 - Florianópolis - SC - BRAZIL Phone: +55.48.331.9649 - Fax: +55.48.234.3790 e-mail: mur...@grucad.ufsc.br ICQ#: 9089332 - 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: Equipment designed and manufactured for use in-house
Carlos Perkins wrote... Dear All, A question from UK: Does anyone have a strategy for handling the Low Voltage and EMC Directive requirements relating to equipment made for use in-house? By this, I mean test boxes, power supplies, break-out boxes, etc. These products are not meant to be offered for sale (ie not 'placed on the market'), but have been 'taken into service' by being switched on and used. I think, therefore, that the protection requirements of the Directives must be met, but CE marking is not necessary. In terms of Safety, I think EN 60950 and EN 61010-1 are relevant. Does anyone have a view on this? Cheers, Hi Carlos, In the UK, apart from EU Directives for the market, there are is a complete set of requirements for Health and Safety at Work. When you start taking onboard the mandatory Hazard And Risk Assessment for the task and consider the reaction of the Health and Safety Executive if they come to investigate an accident - you may find that for many pieces of home brew equipment formal certification starts to look like a reasonable option. On the EMC side, although the EMC Directive might not apply (more in a moment) the 1949 Wireless Telegraphy Act does apply and causing interference to emergency services, navigation frequencies or telecommunication systems that make lots of money from providing high reliability radio links might work out expensive one way or another. The EC Guidance document says (my words) that, although the item is never placed on the market as such, the requirements for placing on the market apply when the item is taken into service... As you have decided that the equipment must meet the protection requirements I assume that it you will have some sort of evidence to support the concept. If you have the evidence and are happy with it, then is there a great leap to sticking the CE Mark on it? Note: When in the UK with uncertified equipment at a trade fair or exhibition - the Wireless Telegraphy Act still applies, as does civil liability. I hope that this helps? Tim - My mind is my own, blame no other for my thoughts. - 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).
Posters
I have an interest in knowing where to get EMI/EMC/Safety posters to hang up in and around my office. Does anyone of you know of what posters are available and from whom they may be ordered. I presently have two informative posters hanging on the walls of my office as follows: The CHASE guide to EMISSIONS IMMUNITY; Chase EMC, Inc., 230 Route 206, Building No.2, Flanders, New Jersey 07836, Tel 201 252-8001. USA Frequency Allocations 500kHz to 4GHz; Fair-rite Products Corp., One Commercial Row, Wallkill, NY 12589-0288. The information listed on these two poster are ferry useful as a quick reference. Some of you may have these posted already, because I have seen them in many test labs that I have used in the past. Thanks in advance. Regards, Michael S. Davis Compliance Engineer ADC Broadband Communications 203 630-5788 mike_da...@adc.com attachment: Davis,_Mike.vcf
Equipment designed and manufactured for use in-house
In article: 199908122132.haa09...@iswfwa.effem.co.uk carlos.perk...@eu.effem.com writes: A question from UK: Does anyone have a strategy for handling the Low Voltage and EMC Directive requirements relating to equipment made for use in-house? By this, I mean test boxes, power supplies, break-out boxes, etc. These products are not meant to be offered for sale (ie not 'placed on the market'), but have been 'taken into service' by being switched on and used. I think, therefore, that the protection requirements of the Directives must be met, but CE marking is not necessary. In terms of Safety, I think EN 60950 and EN 61010-1 are relevant. Does anyone have a view on this? Cheers, Carlos Perkins From the investigations I've done, and reading others' interpretations of the requirements, I think you have it in a nutshell. But try telling management that just a simple test box still has to comply, and ought to be tested and documented. I would guess that the critical word in the sentence is ought. Regards, Mark Opinions expressed do not necessarily represent those of my employer. -- Mark Hone Wellman CJB Limited Email: m...@cjbdev.demon.co.uk Airport Service Road Tel: +44 (0)23 9262 9239 (Direct) Portsmouth, Hampshire Tel: +44 (0)23 9266 4911 PO3 5PG, ENGLAND Fax: +44 (0)23 9269 7864 - 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: Equipment designed and manufactured for use in-house
Carlos, Over the years, I have designed and built a lot of this type of equipment. It is actually easier to build in safety with this type of equipment rather than a commercial product because component costs are not as much of a factor. Here are a few rules to follow: Identify and list all possible safety hazards - make a checklist Use appropriate connectors for the voltages and currents involved Use CE marked components wherever possible Make sure that all SELV wiring is physically separate from non-SELV wiring Use additional insulation over non-SELV wiring whenever possible Secure all wiring against coming loose inside the enclosure Securely fasten all hot or heavy components within the enclosure Clearly label any potential hazards - If necessary, label as For Use Only By Trained Operator Securely fasten all access covers with appropriate fasteners - use special tamper-resistant fasteners if required - label all covers Do Not Remove - Service To Be Performed Only By Specially Trained Personnel Finally, make sure that all safety issues on the checklist have been properly addressed If all of the above are properly done, you should have safe test fixtures which no safety inspector should have any problems with. One more thing, be sure to properly document all test fixtures, and keep copies on file. I hope this helps some, Scott Lacey - 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: National Safety Requirements?????
-Original Message- From: Steel, Howard F Sent: Friday, August 13, 1999 8:14 AM To: Mowbray, John H Subject: RE: National Safety Requirements? There are National standards - (e.g. UL 1950), but there is no national requirement per se. It depends on the city, state, etc. Howard Steel NCR Canada Ltd. -Original Message- From: Mowbray, John H Sent: August 13, 1999 7:46 AM To: Arvind Vyas; Howard Steel Subject: FW: National Safety Requirements? -Original Message- From: Kathy Toy [SMTP:kathy@eng.sun.com] Sent: Thursday, August 12, 1999 7:16 PM To: emc-p...@majordomo.ieee.org Cc: kathy@eng.sun.com Subject: National Safety Requirements? HI: Is there a new National Safety Standard for the US? A friend of mine came by and asked this. It has been my understanding that most large cities and counties require some type of safety approval for equipment. I have not heard that there is an actual US safety requirment. If there is one, where would this edict come from and what would be the standard (NEC)?? Or is this just one of these strange rumors that comes around now and again? Thanks to anyone who might know. kt _/_/_/ _/_/ _/ _/ Kathy Toy _/ _/_/ _/_/ _/ Safety Compliance Engineer _/_/_/ _/_/ _/ _/ _/Office/Voice Mail:(650)786-3210 _/ _/_/ _/ _/_/ Dept. FAX: (650)786-3723 _/_/_/ _/_/_/ _/ _/ Email:kathy@eng.sun.com M I C R O S Y S T E M S - 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: Horn antennas, pre-amplifier, and return loss measurement
My higher horns came from Millitech. Leslie Bai wrote: EMCO has no horn over 40GHz. --- WOODS, RICHARD wo...@sensormatic.com wrote: Try EMCO for horns and MITEQ for preamps. -- From: Leslie Bai [SMTP:leslie_...@yahoo.com] Sent: Thursday, August 12, 1999 1:15 PM To: 'emc-p...@majordomo.ieee.org' Subject: Horn antennas, pre-amplifier, and return loss measurement Hi, Folks, Is there anyone can direct me to some sources of horn antennas preamplifiers. What I need are sets of horn antenna for spurious emissions testing to meet FCC Part 101. 1 to 18GHz, 18 to 26.5GHz, 26.5 to 40GHz, or 18 to 40GHz instead, 40 to 60GHz, 50 to 75GHz, or 40 to 75GHz instead, 75 to 110GHz, 110 to 170GHz, or 75 to 170GHz instead. Due to the significant space loss over 110GHz, I guess I also need a set of preamplifier from 110 to 170GHz. I am also studying on return loss measurement methodologies to meet ETSI requirement for radios RF port. Since NAMAS calibration of network analyzer may cost thousands bucks, I am wondering if I could achieve a good result (in terms of accuracy and uncertainty) using spectrum analyser and waveguide coupler. If anyone by any chance has an ready error model of the test setup using spectrum analyzer and waveguide coupler, I appreciate you could share with me to short my research path. Thanks in advance. Leslie Bai Senior Compliance Engineer Compliance Quality Manager Digital Microwave Corporation 170 Rose Orchard Way San Jose, CA 95134 Tel: (408)-944-1754 _ 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). - 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!? Bid and sell for free at http://auctions.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). -- Jon D. Curtis, PE Curtis-Straus LLC j...@curtis-straus.com Laboratory for EMC, Safety, NEBS, SEMI-S2 and Telecom 527 Great Roadvoice (978) 486-8880 Littleton, MA 01460 fax (978) 486-8828 http://www.curtis-straus.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: NEMA 4 cabinet questions
-Original Message- From: JENKINS, JEFF [SMTP:jeff.jenk...@aei.com] Sent: Thursday, August 12, 1999 3:09 PM To: 'emc-p...@ieee.org' Subject:NEMA 4 cabinet questions Some questions about using a NEMA 4 cabinet: (1) Is the environment inside the cabinet considered pollution degree 1, no matter what the external environment is? I believe Pollution Degree 1 is intended for potted or encapsulated parts (2) We need to install a water drain at the bottom of the cabinet. Can we use a positive-acting valve without violating the cabinet's NEMA 4 rating? As long as it meets the requirements in UL 50 or the equivalent NEMA standard (3) The cabinet doors will need to be opened periodically for maintenance. How does this affect the pollution degree inside the cabinet? If dust or other pollution is present when the doors are open, I suspect Pollution Degree 3 would apply By the way, these questions are in the context of certifying the product under the CB 950 scheme. You may want to concentrate on an IEC 60529 IP rating for international use. The Certification Body should be able to advise you of any specific country deviations. Thanks, Jeff Jenkins Advanced Energy Industries, Inc. Best Regards, Jody Leber jle...@ustech-lab.com http://www.ustech-lab.com U. S. Technologies 3505 Francis Circle Alpharetta, GA 30004 770.740.0717 Fax: 770.740.1508 - 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: Equipment designed and manufactured for use in-house
I don't know whether the LV and EMC Directives apply to in house manufcatured test boxes, test jigs and the like. One thing I do know is that if I told my manager that we had to test all our stuff and either chuck out or modify anything that didn't comply he'd string me up Chris Colgan EMC Safety TAG McLaren Audio Ltd mailto:chris.col...@tagmclarenaudio.com -Original Message- From: carlos.perk...@eu.effem.com [SMTP:carlos.perk...@eu.effem.com] Sent: 13 August 1999 07:22 To: emc-p...@majordomo.ieee.org Subject: Equipment designed and manufactured for use in-house Dear All, A question from UK: Does anyone have a strategy for handling the Low Voltage and EMC Directive requirements relating to equipment made for use in-house? By this, I mean test boxes, power supplies, break-out boxes, etc. These products are not meant to be offered for sale (ie not 'placed on the market'), but have been 'taken into service' by being switched on and used. I think, therefore, that the protection requirements of the Directives must be met, but CE marking is not necessary. In terms of Safety, I think EN 60950 and EN 61010-1 are relevant. Does anyone have a view on this? Cheers, Carlos Perkins - 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). = Authorised on 08/13/99 at 11:17:09; code 37453441765A44CC. The contents of this E-mail are confidential and for the exclusive use of the intended recipient. If you receive this E-mail in error, please delete it from your system immediately and notify us either by E-mail, telephone or fax. You should not copy, forward or otherwise disclose the content of the E-mail. TAG McLaren Audio Ltd, Ermine Business Park Huntingdon, Cambs, PE18 6XY Telephone : 01480 415600 (+44 1480 415600) Facsimile : 01480 52159 (+44 1480 52159) - 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: Equipment designed and manufactured for use in-house
My understanding is the same as yours - you must meet the protection requirements. Regarding safety, I believe that to show due diligence concerning Health and Safety regulations you would in any case have to ensure the equipment was safe to use; the easiest way is to ensure compliance with a suitable standard like 60950 or 61010-1, and to have records showing how it complied. Regarding EMC, the protection requirements must be met bearing in mind the potential for problems inside and outside your facility. Thus the environment in which it is used is relevant, as well as for example the attenuation of your factory walls (in case of emissions). In practice it is the safety of your employees which is the critical issue unless you build rf transmitters in your boxes! Roger Viles WWG carlos.perk...@eu.effem.com on 13/08/99 07:22:17 Please respond to carlos.perk...@eu.effem.com To: emc-p...@majordomo.ieee.org cc:(bcc: Roger Viles/PLY/Global) Subject: Equipment designed and manufactured for use in-house Dear All, A question from UK: Does anyone have a strategy for handling the Low Voltage and EMC Directive requirements relating to equipment made for use in-house? By this, I mean test boxes, power supplies, break-out boxes, etc. These products are not meant to be offered for sale (ie not 'placed on the market'), but have been 'taken into service' by being switched on and used. I think, therefore, that the protection requirements of the Directives must be met, but CE marking is not necessary. In terms of Safety, I think EN 60950 and EN 61010-1 are relevant. Does anyone have a view on this? Cheers, Carlos Perkins - 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).
Equipment designed and manufactured for use in-house
Dear All, A question from UK: Does anyone have a strategy for handling the Low Voltage and EMC Directive requirements relating to equipment made for use in-house? By this, I mean test boxes, power supplies, break-out boxes, etc. These products are not meant to be offered for sale (ie not 'placed on the market'), but have been 'taken into service' by being switched on and used. I think, therefore, that the protection requirements of the Directives must be met, but CE marking is not necessary. In terms of Safety, I think EN 60950 and EN 61010-1 are relevant. Does anyone have a view on this? Cheers, Carlos Perkins - 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: Horn antennas, pre-amplifier, and return loss measurement
Bai: Are you sure that SA + waveguide coupler is a cheaper solution for your return loss measurement ? For a wide band of microwave frequency, you may need a lot of different waveguide couplers, which may cost thousand bucks themselves. Another problem is accuracy. It's not easy to calibrate your setup to make sure that what you measured is return loss from your EUT rather than something else such as mismatch at the connection between your waveguide and SA. Just my 2 cents. Regards Qu Pingyu -Original Message- From: Leslie Bai [SMTP:leslie_...@yahoo.com] Sent: Friday, 13 August 1999 1:15 To: 'emc-p...@majordomo.ieee.org' Subject: Horn antennas, pre-amplifier, and return loss measurement Hi, Folks, Is there anyone can direct me to some sources of horn antennas preamplifiers. What I need are sets of horn antenna for spurious emissions testing to meet FCC Part 101. 1 to 18GHz, 18 to 26.5GHz, 26.5 to 40GHz, or 18 to 40GHz instead, 40 to 60GHz, 50 to 75GHz, or 40 to 75GHz instead, 75 to 110GHz, 110 to 170GHz, or 75 to 170GHz instead. Due to the significant space loss over 110GHz, I guess I also need a set of preamplifier from 110 to 170GHz. I am also studying on return loss measurement methodologies to meet ETSI requirement for radios RF port. Since NAMAS calibration of network analyzer may cost thousands bucks, I am wondering if I could achieve a good result (in terms of accuracy and uncertainty) using spectrum analyser and waveguide coupler. If anyone by any chance has an ready error model of the test setup using spectrum analyzer and waveguide coupler, I appreciate you could share with me to short my research path. Thanks in advance. Leslie Bai Senior Compliance Engineer Compliance Quality Manager Digital Microwave Corporation 170 Rose Orchard Way San Jose, CA 95134 Tel: (408)-944-1754 _ 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). - 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: Horn antennas, pre-amplifier, and return loss measurement
EMCO has no horn over 40GHz. --- WOODS, RICHARD wo...@sensormatic.com wrote: Try EMCO for horns and MITEQ for preamps. -- From: Leslie Bai [SMTP:leslie_...@yahoo.com] Sent: Thursday, August 12, 1999 1:15 PM To: 'emc-p...@majordomo.ieee.org' Subject: Horn antennas, pre-amplifier, and return loss measurement Hi, Folks, Is there anyone can direct me to some sources of horn antennas preamplifiers. What I need are sets of horn antenna for spurious emissions testing to meet FCC Part 101. 1 to 18GHz, 18 to 26.5GHz, 26.5 to 40GHz, or 18 to 40GHz instead, 40 to 60GHz, 50 to 75GHz, or 40 to 75GHz instead, 75 to 110GHz, 110 to 170GHz, or 75 to 170GHz instead. Due to the significant space loss over 110GHz, I guess I also need a set of preamplifier from 110 to 170GHz. I am also studying on return loss measurement methodologies to meet ETSI requirement for radios RF port. Since NAMAS calibration of network analyzer may cost thousands bucks, I am wondering if I could achieve a good result (in terms of accuracy and uncertainty) using spectrum analyser and waveguide coupler. If anyone by any chance has an ready error model of the test setup using spectrum analyzer and waveguide coupler, I appreciate you could share with me to short my research path. Thanks in advance. Leslie Bai Senior Compliance Engineer Compliance Quality Manager Digital Microwave Corporation 170 Rose Orchard Way San Jose, CA 95134 Tel: (408)-944-1754 _ 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). - 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!? Bid and sell for free at http://auctions.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: Electrical Equipment Using Liquid Lithium Chloride
I've never worked with it, but I found an MSDS at: http://www.jtbaker.com/msds/l6697.htm On Thu, 12 Aug 1999 22:07:14 +0300, you wrote: I am working on a dehumidifier used as an accessory for a central air conditioning system used on the rooftop. It employs an electrical control box, compressor, fan unit and large amounts of Lithium Chloride which is usually handled by service personnel. 1. What is the level of lithium chloride which can be emitted to the air in North America? What about Europe? 2. Are there any special precautions which must be taken when designing the equipment in regards to protection against human touch and/or inhalation of this liquid compound? 3. The UL1995 Standard for Heating and Cooling Equipment covering the product does not contain the additional requirements needed for chemical hazards? How are chemical hazards treated when evaluating any equipment for UL and any other NRTL. How about Europe? Thanks in Advance, PETER S. MERGUERIAN MANAGING DIRECTOR PRODUCT TESTING DIVISION I.T.L. (PRODUCT TESTING) LTD. HACHAROSHET 26, P.O.B. 211 OR YEHUDA 60251, ISRAEL TEL: 972-3-5339022 FAX: 972-3-5339019 E-MAIL: pe...@itl.co.il Visit our Website: http://www.itl.co.il - 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). -- Patrick Lawler plaw...@west.net - 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).
National Safety Requirements?????
HI: Is there a new National Safety Standard for the US? A friend of mine came by and asked this. It has been my understanding that most large cities and counties require some type of safety approval for equipment. I have not heard that there is an actual US safety requirment. If there is one, where would this edict come from and what would be the standard (NEC)?? Or is this just one of these strange rumors that comes around now and again? Thanks to anyone who might know. kt _/_/_/ _/_/ _/ _/Kathy Toy _/ _/_/ _/_/ _/ Safety Compliance Engineer _/_/_/ _/_/ _/ _/ _/ Office/Voice Mail:(650)786-3210 _/ _/_/ _/ _/_/ Dept. FAX: (650)786-3723 _/_/_/ _/_/_/ _/ _/Email:kathy@eng.sun.com M I C R O S Y S T E M S - 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).
