EMC Labs in Sacramento CA.??
Is anyone aware of any EMC labs in or around Sacramento California? Regards Joe Martin EMC/Product Safety Engineer marti...@pebio.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).
Immunity to Frequency Variations Specification
I am trying to find out if there is a IEC/EN/MIL-STD specification that covers Immunity to Frequency Variations. Thanks, Ron Chernus, Denso - 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).
Copper braid
I am looking for 2 inch plus tin coated copper flat braid to ground screen rooms and a ground plane with. All I can find is it by the 100' roll. I don't need that much. Does anyone have a good source?? Thanks, Ron Chernus, Denso - 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).
EMC for medical devices
Hello All, Could someone let me know the answer to the following questions please: 1-What are the immunity standards used in Europe for medical devices? 2-What EMC standards is used in US/Canada for medical devices? The product in question is approved for safety to IEC601-1. Thank you Kevin __ Do You Yahoo!? Talk to your friends online with Yahoo! Messenger. http://im.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: EN55103-1 and -2 Loop sensors coils
Benoit, Solar electronics (Hollywood, California, USA) makes an assortment of loop antennas many of which would be applicable to the standards mentioned since the standards allow the use of similar shaped antennas if the calibration factors are known. Alternatively you can construct your own probe as specified in the standard. You are allowed to use the theoretical calibration factors given if you construct the probe as described in Annex A Paul McCoy Benoit Nadeau wrote: Bonjour de Montreal, I am presently looking to buy some test apparatuses to perform testing according to EN55103-1 and EN55103-2 and I having trouble to locate a manufacturer of Loop sensors and radiating coils as defined in the above mentioned standards. I found a source (Kikusui) using Internet but it is located in Japan but their local distributor in Canada told me that they do not want to distribute their sensors and coils outside Japan. Does anyone know a North America manufacturer or distributor for those devices? Thank you for your help, -- Benoit Nadeau, ing. M.ing. (P.Eng., M.Eng) Gerant du Groupe Conformite (Conformity Group Manager) Matrox http://www.matrox.com/ -- 1055, boul. St-Regis Dorval (Quebec) Canada H9P 2T4 Tel : (514) 822-6000 (x2475) FAX : (514) 822-6275 Internet : bnad...@matrox.com, mailto:bnad...@matrox.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).
Proving compliance of packaging material exported into China
Hello All, Does anyone have any experience proving the compliance of there wooden packaging material being exported into China that they could share with my organization? Such as: - Exactly what proof was necessary to pass customs. - Is a certificate from the wood manufacturer sufficient? Thank you, R. A. Di Stefano System Manufacturing Engineering Panametrics, Inc. ASD 221 Crescent Street Waltham, Ma 02453 application/ms-tnef
RE: EN61000-4-11
You can't really use an AC power source for this requirement. The way its done is with a tap switched transformer (KeyTek) or via a switch between two or more variacs or other fixed ac sources. Mike Hopkins KeyTek -Original Message- From: fwhitfi...@rheintech.com [SMTP:fwhitfi...@rheintech.com] Sent: Monday, January 24, 2000 4:11 PM To: emc-p...@ieee.org Cc: bclav...@rheintech.com Subject: EN61000-4-11 EN 61000-4-11 states that the rise/fall time for a test generator used to perform a voltage abnormalities test (i.e. dips, variations etc should be between 1 and 5 microseconds.) Does anyone know of a generator that meets this criterion? I have come across a few but they typically cannot be programmed to work with rise/fall times less than 0.1 milliseconds(i.e. 100 microseconds). Thanks for your usual co-operation. John F. Whitfield - 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: Magnetic field immunity in the Arctic regions
Bob, Researchers are trying to use them to 3 dimensionally map the activity (current flowing) in the brain. It is my understanding that the work is going very slowly because this puts them right at the noise floor of SQUIDs. Human beings barely affect the earth's field, plus in an outside environment the earth's magnetic field is too energetic in comparison to the human body to be able to see the body. - Robert - PS Last comment ON the newsgroup to this unrelated topic. However there may come a day when we'll have to meet Quiet Room specs to be used for mapping electrical brain activity. And those specs are going to make a chamber look like a sieve. -Original Message- From: Robert Tims (EMX) emxrt...@am1.ericsson.se To: 'Robert Macy' m...@california.com List-Post: emc-pstc@listserv.ieee.org Date: Tuesday, January 25, 2000 9:40 AM Subject: RE: Magnetic field immunity in the Arctic regions Hey, can those things detect a human's effect on the magnetic field (or even a human's own magnetic field)? Would make a nice Search and Rescue tool if it did, for avalanches or earthquakes or whatnot, or even a good weapon! BR, Bob Tims Compliance Engineer -Original Message- From: Robert Macy [SMTP:m...@california.com] Sent: Tuesday, January 25, 2000 11:42 AM To: Tom Cokenias; Peter Poulos; emc-p...@ieee.org Subject: Re: Magnetic field immunity in the Arctic regions Don't need SQUIDs to read earth's field. Fluxgates have enough accuracy. And the earth's natural noise floor is well above the SQUID so you don't need to pay for all that extra. Remember, SQUIDs can observe the current flow as metal rusts. Check out Geometrics. They use the decay of the electron orbits in a Cesium atom (I think) to read magnetic field to 12 digits, yes that's 12 decimal digits. I watched the readings shift as a greyhound bus drove by deflecting the earth's magnetic field over a city block away. - Robert - - 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).
EN55103-1 and -2 Loop sensors coils
Bonjour de Montreal, I am presently looking to buy some test apparatuses to perform testing according to EN55103-1 and EN55103-2 and I having trouble to locate a manufacturer of Loop sensors and radiating coils as defined in the above mentioned standards. I found a source (Kikusui) using Internet but it is located in Japan but their local distributor in Canada told me that they do not want to distribute their sensors and coils outside Japan. Does anyone know a North America manufacturer or distributor for those devices? Thank you for your help, -- Benoit Nadeau, ing. M.ing. (P.Eng., M.Eng) Gerant du Groupe Conformite (Conformity Group Manager) Matrox http://www.matrox.com/ -- 1055, boul. St-Regis Dorval (Quebec) Canada H9P 2T4 Tel : (514) 822-6000 (x2475) FAX : (514) 822-6275 Internet : bnad...@matrox.com, mailto:bnad...@matrox.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: Annex F - groove vs. slot
Hi, I have always interpreted the requirement to include slots. My thinking was that what ever could bridge a groove could also bridge a slot. Ned Devine Entela, Inc. Program Manager III Phone 616 248 9671 Fax 616 574 9752 e-mail ndev...@entela.com -Original Message- From: Dirk Atama [mailto:dirk_at...@yahoo.com] Sent: Monday, January 24, 2000 6:28 PM To: EMC PSTC Subject: Annex F - groove vs. slot 950 creepage experts- When applying Annex F, Fig. F.1 (narrow groove) and Fig. F.2 (wide groove), requirements to PWB's, does one have to abide by the minimum value of X only for grooves, or also for slots punched all the way through the PWB? It makes sense that if a groove is particularly narrow, a small accumulation of contamination would negate any creepage gained from having the groove. However, what about a slot that goes completely through the board? Would contamination not collect in a slot as it would in a groove, and therefore the slot can be any width (therefore forcing the creepage measurement to be made around the edge of the slot)? We're thinking of an application between pins of an SMD multi-pin telco isolation transformer package: adjacent pins and their solder pads don't meet the required creepage, but if we punch slots through the PWB between pads, can we then measure our creepage around the edge of the slot? In this way we can create as much creepage as we need by simply lengthening the slot. We're thinking of punching a slot about 0.2-0.3mm wide between solder pads, of sufficient length to give us the required creepage. Any comments? Anyone know the history and rationale of this Annex F X requirement and can comment? Thanks, folks. Dirk __ Do You Yahoo!? Talk to your friends online with Yahoo! Messenger. http://im.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: Magnetic field immunity in the Arctic regions
And remember, at the North Magnetic Pole, presently in northwestern Canada, the magnetic field will be just about vertical. Ed :-):-):-):-):-):-):-):-):-):-):-):-):-):-):-):-):-):-):-):-):-):-):-):-):-) Ed Price ed.pr...@cubic.com Electromagnetic Compatibility Lab Cubic Defense Systems San Diego, CA. USA 858-505-2780 (Voice) 858-505-1583 (Fax) Military Avionics EMC Services Is Our Specialty Shake-Bake-Shock - Metrology - Reliability Analysis :-):-):-):-):-):-):-):-):-):-):-):-):-):-):-):-):-):-):-):-):-):-):-):-):-) -Original Message- From: Colgan, Chris [SMTP:chris.col...@tagmclarenaudio.com] Sent: Tuesday, January 25, 2000 2:11 AM To: emc-p...@ieee.org Subject: RE: Magnetic field immunity in the Arctic regions Hi Peter A quick web search using magnetic field strength earth polar revealed the following site http://nssdc.gsfc.nasa.gov/space/model/models/igrf.html which allows you to calculate the earth's magnetic field strength anywhere at any height. It seems that the field strength on the surface of the earth varies from around 55uT at the poles to 35uT at the equator - not very much. Regards Chris Colgan EMC Safety TAG McLaren Audio Ltd mailto:chris.col...@tagmclarenaudio.com -Original Message- From: Peter Poulos [SMTP:pet...@foxboro.com.au] Sent: 25 January 2000 02:22 To: emc-p...@ieee.org Subject:Magnetic field immunity in the Arctic regions Hi folks. Has anyone had experience with demonstrating immunity to magnetic fields that can be expected in the Arctic / north pole regions? I'm trying to find out what level of magnetic fields can be expected as a worse case in order to demonstrate immunity of some electronic equipment. Is anyone aware of any standards that would cover this? - 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 01/25/00 at 10:08:46; code 37f48bf37D7B9C2B. ** 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, The Summit, 11 Latham Road Huntingdon, Cambs, PE18 6ZU 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).
Re: E-Field Probe Question
That's a bit of a puzzler Robert. As I recall, Tektronix used to state ristetime in terms of that observed when passing through amplifiers with gaussian rolloff and it was Rt(ns)= Bandwidth(Mhz) / 350 Ralph Cameron - Original Message - From: Robert Macy m...@california.com To: Dan Kwok dk...@intetron.com; Ralph Cameron ral...@igs.net; EMC-PSTC Group emc-p...@majordomo.ieee.org Sent: Monday, January 24, 2000 8:54 PM Subject: Re: E-Field Probe Question At first that looked like what is asked for is the ability to pass signals with a bandwidth of 10Hz. Given what they're looking for, stating frequency would make it easier to understand. But isn't the risetime 1/2pi F?? Or, are they just saying that the readings pop out at least 10 times per second, with the ability to respond in one reading? - Robert - Ralph Cameron wrote: Tr usually ment risetime when referred to pulsed signals. In this case I think it refers to response time less than 10Hz. In other words you'll get a reading in less than the period of ten hertz at the frequency of measurement. Hi Ralph, Would that be more appropriately stated as 0.10 sec? Just curious. Regards, Dan Kwok -- = Daniel Kwok Vancouver, BC, Canada Intetron Consulting, Inc. Telephone 604.432.9874 Email dk...@intetron.com FREE EMC Tips @ our website http://www.intetron.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).
IEC 571-1
Does anyone have info on IEC 571-1/90? Our customer is refering to this document as the EMI transient specification most applicable to our railway program. I'd like to learn more as to why it is applicable and also how this spec compares to the one to which we've already tested (IEC 801-5). Thanks, Susan Beard GE Harris Railway Electronics - 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: Magnetic field immunity in the Arctic regions
Hi Peter A quick web search using magnetic field strength earth polar revealed the following site http://nssdc.gsfc.nasa.gov/space/model/models/igrf.html which allows you to calculate the earth's magnetic field strength anywhere at any height. It seems that the field strength on the surface of the earth varies from around 55uT at the poles to 35uT at the equator - not very much. Regards Chris Colgan EMC Safety TAG McLaren Audio Ltd mailto:chris.col...@tagmclarenaudio.com -Original Message- From: Peter Poulos [SMTP:pet...@foxboro.com.au] Sent: 25 January 2000 02:22 To: emc-p...@ieee.org Subject: Magnetic field immunity in the Arctic regions Hi folks. Has anyone had experience with demonstrating immunity to magnetic fields that can be expected in the Arctic / north pole regions? I'm trying to find out what level of magnetic fields can be expected as a worse case in order to demonstrate immunity of some electronic equipment. Is anyone aware of any standards that would cover this? - 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 01/25/00 at 10:08:46; code 37f48bf37D7B9C2B. ** 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, The Summit, 11 Latham Road Huntingdon, Cambs, PE18 6ZU 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: Competent Authorities
Mark, No, you only need to register with one member state. There was an attempt about 2 years ago by some countries to insist that registration had to be done on a national basis, but I am reliably informed by the Medical Devices Agency in the UK that it was knocked on the head by the EC Commission in Brussels. I see from your address that you are located in the USA. If this is your manufacturing location then you need to appoint someone to register the products on your behalf. This is either someone selling the product or your legally appointed authorised representative. The person must be located in the EEA (EU plus Norway, Iceland or Liechtenstein). I suggest that whoever you use, including a member of your own company who is located in the EU, be formally appointed. Medical products are high risk from a compliance point of view (think FDA here!) and so you should get everything in place and correctly done. Do not try to cut corners. My company registers products and acts as an authorised representative and we get audited for completeness of documentation. Do not forget that you need a vigilance scheme in place - the competent authorities always check this one. Regards Martin Green Tel:(44) 1793 784545 Fax: (44) 1793 784551 -Original Message- From: Mark Schmidt [SMTP:mschm...@xrite.com] Sent: 24 January 2000 19:43 To: emc-p...@majordomo.ieee.org Subject: Competent Authorities Dear Members, In the EEC if I register a Class I Medical Device with a Competent Authority in one Membered State, must I register with other Competent Authorities as we eventually market product their State. All input is appreciated. Regards, Mark Schmidt X-Rite Incorporated Grandville, MI U.S.A. mschm...@xrite.com phone - 616 257 2469 - 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: Harmonics Testing
Doug and group, Sorry to have replied so late, No, the current version standard will become mandatory during the transition period of the new one. For details, please wait until the new version is out for voting (few weeks). Probably the new standard will only use a 50 Watts limit but for all equipment now. I do not agree with Rich about the rectifiers with special wave shape excluded for meeting limits. This only happens when a certain amount of power is exceeded approximately 250 VA, and simple measures (at the cost of dissipation: I admit) like a series resistor can bring larger power supplies into compliance. At approx. 400 Watt this will be impractical, and one will need to use a pre switcher. (Read EDN Jan 2000). A story I was testing a call completion center of a big bank in the Netherlands. They had about 40 PCs per mains supply group. The harmonics of these 50 Class D special Wave shape equipment summed up in the Neutral connector creating a 150 Hz current of over 20 Amps ! The groups were fused at 3 x 16 amps each ! The power dissipation in the building mains transformer increased due to 6 of these groups substantially. This could mean larger feed transformers, and increased wire thickness. As the office automation equipment will be used in increasing numbers, the harmonic current will possibly mean that the national energy infra structure will have to be over dimensioned with 10-15 %. This means that several new power plants has to be build just because of harmonics. But no-one will pay for it. Imagine your energy bill to rise with 10-15% without increased power consumption ?? Regards, Gert Gremmen ce-test, qualified testing -Original Message- From: dfra...@yurie.com [mailto:dfra...@yurie.com] Sent: Wednesday, January 19, 2000 4:53 PM To: cet...@cetest.nl Cc: emc-p...@majordomo.ieee.org Subject: RE: Harmonics Testing Gert, Does this imply that the current revision will be withdrawn before it becomes mandatory for CE-marking? If so, how does this affect CE-Marking requirements in the 1-1-2001 to 1-1-2003 timeframe? Can you elaborate on what the requirements will be on 1-1-2001 for the following: PS 50w 50W PS 75w PS 75w Is the intent t withdraw the current -2 standard and delay mandatory testing until 1-1-2003, or will there be mandatory requirements one year from now? Doug Frazee Regulatory Compliance Manager Lucent Technologies, Broadband Carrier Networks dfra...@lucent.com cetest cet...@cetest.nl on 01/19/2000 08:15:27 AM Please respond to cetest cet...@cetest.nl To: Bruce Touzel btou...@acc.com cc: 'emc-pstc' emc-p...@majordomo.ieee.org (bcc: Doug Frazee/HQ/Yurie) Subject: RE: Harmonics Testing Bruce ., It will be applicable to virtually all equipment exceeding 50 Watt. The new 3-2 will have of course it's transaction period to 1-1-2003 (or even longer as some suggest) Gert Gremmen cetest, qualified testing -Original Message- From: Bruce Touzel [mailto:btou...@acc.com] Sent: Tuesday, January 18, 2000 11:14 PM To: cetest Cc: Flinders, Randall; 'emc-pstc' Subject: Re: Harmonics Testing Gert, Is 3-2 applicable to power supplies of 50W in Jan 1, 2001 ? Or is it still 75W in Jan 1, 2001, then 4 years later changed to 50W ? thanks Bruce cetest wrote: I suppose Randy you are concerned about the EN-61000-3-2 instead of the EN 61000-3-3 which is concerned with Flicker testing. Please Note that the 3-2 is currently under revision and prone to change very soon ! I would select Scenario #1 The 50 watt limit is meant to be used for all equipment, and the current document TC210-169 (in voting right now) has it's clause modified as such. Strictly read you are right about the application of scenario #2. The current 3-2 is a very bad document, f.a. nothing is said about test times and transitory effects. This will all or partly be covered in the new version. BTW Using scenario #2 it will be hard to exceed any limit at all with an active input power 50 watt !!! Gert Gremmen ce-test qualified testing == http://www.cetest.nl Do you know our CE/E mark True type Font ? http://www.cetest.nl/cettf.htm == -Original Message- From: owner-emc-p...@ieee.org [mailto:owner-emc-p...@ieee.org] Sent: Tuesday, January 18, 2000 7:12 PM To: 'emc-pstc' Subject: Harmonics Testing Greetings EMC Professionals! I have a quick question regarding Harmonics testing to EN61000-3-3. We have an ITE product with a switching power supply. The product uses about 38 watts input power. According to the standard, which scenario applies? Scenario #1 The unit does not need to be tested, because it falls below the Class D Input power range of 75(50)W to 600W. Section 7.4 of the standard states that ...No limits apply for equipment with an active input power up to and including 75W Scenario #2 Since the unit does not use more than 75W (or
Re: Magnetic field immunity in the Arctic regions
Are fields stronger there? The geologic survey people should have those numbers. In California the fields are about 50microT which is pretty insignificant. If you took a loop of wire that was 1 sq meter area and flopped it over in the earth's field you'd have to do it within half a second even to get 0.1 milliV. It would seem reasonable that testing to satellite magnetic field susceptibility limits would give you conservative results. - Robert - -Original Message- From: Peter Poulos pet...@foxboro.com.au To: emc-p...@ieee.org emc-p...@ieee.org List-Post: emc-pstc@listserv.ieee.org Date: Monday, January 24, 2000 8:49 PM Subject: Magnetic field immunity in the Arctic regions Hi folks. Has anyone had experience with demonstrating immunity to magnetic fields that can be expected in the Arctic / north pole regions? I'm trying to find out what level of magnetic fields can be expected as a worse case in order to demonstrate immunity of some electronic equipment. Is anyone aware of any standards that would cover this? - 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: Full Compliance Versus Pre-Compliance Measurement Systems
Fully answering this would take several hours and many pages. The easy answer is that total measurement error must be less than the margin between emissions and the limit. -- From: Sandy Mazzola mazzo...@symbol.com To: emc-p...@majordomo.ieee.org Subject: Full Compliance Versus Pre-Compliance Measurement Systems Date: Mon, Jan 24, 2000, 1:37 PM To all, Could someone please layout the Fullcompliance EMI Measurement system versus Pre-Compliance EMI Measurement system tradeoffs. Some thoughts on when each one is required and when one could get by with the pre-compliance setup would be especially helpful. I know this may be a repeat but any thoughts on the matter would be appreciated. Thanks in advance for any inputs. Thank You Sandy Mazzola Symbol Technologies Inc 1 Symbol PLaza Holtsville, N.Y. 11742 - 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).
Magnetic field immunity in the Arctic regions
Hi folks. Has anyone had experience with demonstrating immunity to magnetic fields that can be expected in the Arctic / north pole regions? I'm trying to find out what level of magnetic fields can be expected as a worse case in order to demonstrate immunity of some electronic equipment. Is anyone aware of any standards that would cover this? - 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: E-Field Probe Question
At first that looked like what is asked for is the ability to pass signals with a bandwidth of 10Hz. Given what they're looking for, stating frequency would make it easier to understand. But isn't the risetime 1/2pi F?? Or, are they just saying that the readings pop out at least 10 times per second, with the ability to respond in one reading? - Robert - Ralph Cameron wrote: Tr usually ment risetime when referred to pulsed signals. In this case I think it refers to response time less than 10Hz. In other words you'll get a reading in less than the period of ten hertz at the frequency of measurement. Hi Ralph, Would that be more appropriately stated as 0.10 sec? Just curious. Regards, Dan Kwok -- = Daniel Kwok Vancouver, BC, Canada Intetron Consulting, Inc. Telephone 604.432.9874 Email dk...@intetron.com FREE EMC Tips @ our website http://www.intetron.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).
(fwd) EN61000-4-11
California Instruments has products that meet that requirement. Although the generator we bought 3-4 years ago didn't meet the 5us spec, they later introduced an accessory box that make the generator system compliant. Maybe that feature has been designed-in by now. On Mon, 24 Jan 2000 16:11:28 -0500, fwhitfi...@rheintech.com wrote: EN 61000-4-11 states that the rise/fall time for a test generator used to perform a voltage abnormalities test (i.e. dips, variations etc should be between 1 and 5 microseconds.) Does anyone know of a generator that meets this criterion? I have come across a few but they typically cannot be programmed to work with rise/fall times less than 0.1 milliseconds(i.e. 100 microseconds). Thanks for your usual co-operation. Pat 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).
Re: E-Field Probe Question
Yes, Dan, you're correct. Ralph Cameron - Original Message - From: Dan Kwok dk...@intetron.com To: Ralph Cameron ral...@igs.net; EMC-PSTC Group emc-p...@majordomo.ieee.org Sent: Monday, January 24, 2000 6:50 PM Subject: Re: E-Field Probe Question Ralph Cameron wrote: Tr usually ment risetime when referred to pulsed signals. In this case I think it refers to response time less than 10Hz. In other words you'll get a reading in less than the period of ten hertz at the frequency of measurement. Hi Ralph, Would that be more appropriately stated as 0.10 sec? Just curious. Regards, Dan Kwok -- = Daniel Kwok Vancouver, BC, Canada Intetron Consulting, Inc. Telephone 604.432.9874 Email dk...@intetron.com FREE EMC Tips @ our website http://www.intetron.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).
