Position wanted in Italy
Dear All, Today I leave my position at Xyratex UK. I go to Rome to be with the love of my life. If any of you have contacts in Italy that could be of use to me I would really appreciate it if you would contact me on: mailto:dave_inst...@ieee.org The following is a short CV: I hope I offend no one by doing this. David E. Instone: Member of the Institute of Electrical and Electronics Engineers (IEEE) Senior Compliance and SI Engineer. Xyratex Storage Solutions Division I have accrued a wide knowledge and skill base extending over many disciplines during my working life. In addition to my primary discipline of electronics I have skills in RF and microwave measurements, in mechanical engineering and drawing. My range of abilities enables me to produce and inspire many novel and innovative measurement, test and design solutions. My employment with Xyratex ensured that I was kept aware of the latest developments. In particular, in Fibre Channel I have recently been actively involved in steering those developments. My work and expertise were unique within Xyratex. I personally developed measurement techniques, and use them, to measure the signal parameters - amplitude, jitter and impedance - of high-speed serial data links such as Fibre Channel, Gigabit Ethernet, 1394b and InfiniBand. I was primarily assigned to the Storage Solutions Division of Xyratex. However, all the divisions within Xyratex used my expertise. The majority of my work concentrated on the Fibre Channel and SCSI products designed and produced by Xyratex. During the design phase I gave advice on the requirements and interpretation of the Fibre Channel specifications. Before and during the PCB layout stage I advised on component placement and the routing of impedance critical traces. I checked all new Fibre Channel designs to ensure that the signal parameters specified in the relevant ANSI and NCITS standards were met. Xyratex also made my compliance and advisory services available to other companies. VLSI Technology Inc. IBM and EMC Corp. have used my services extensively. My responsibilities also included representing Xyratex at the bi-monthly meetings in the USA of the NCITS T11 Fibre Channel Technical Committee and Task Groups T11.2 and T11.3. I am a respected member of the Methodology for Jitter Specification and Signal Quality, and the Copper Interconnect groups of T11.2. I have been actively contributing to their work since 1996. I contributed towards the measurement methods sections of NCITS Technical Report TR-25-1999: Fibre Channel - Methodologies for Jitter Specification. I was technical editor of the electrical interconnect sections of the new Fibre Channel FC-PI specification. I have been involved with 1394a and 1394b including the creation of IEEE standard 1394a: 2000. From 1995 to 1996 I attended the T10.2 SSA Technical group. I am recognised as a world expert in the field of SSA (Serial Storage Architecture) signal parameter specifications and played a key role in the creation of the following ANSI Standards: ANSI X3.293-1996 Physical Layer 1 (SSA-PH1) ANSI NCITS 307-1997 Physical Layer 2 (SSA-PH2) -- Regards Dave Instone. Compliance Engineer Storage Systems Development, MP24/22 Xyratex, Langstone Rd., Havant, Hampshire, P09 1SA, UK. Tel: +44 (0)23-92-496862 (direct line) Fax: +44 (0)23-92-496014 http://www.xyratex.com Tel: +44 (0)23-92-496000 --- This message is from the IEEE EMC Society Product Safety Technical Committee emc-pstc discussion list. Visit our web site at: http://www.ewh.ieee.org/soc/emcs/pstc/ To cancel your subscription, send mail to: majord...@ieee.org with the single line: unsubscribe emc-pstc For help, send mail to the list administrators: Michael Garretson:pstc_ad...@garretson.org Dave Healddavehe...@mediaone.net For policy questions, send mail to: Richard Nute: ri...@ieee.org Jim Bacher: j.bac...@ieee.org All emc-pstc postings are archived and searchable on the web at: No longer online until our new server is brought online and the old messages are imported into the new server.
Re: STP vs FTP Ethernet cables (2)
I agree with Paolo, the definition refers to a shielded TWISTED-PAIR cable. Note also that twisted pair is hyphenated. While the definition might better have been worded to refer to 'one or more TWISTED-PAIRS, each of which...' rather than 'elements' it is not difficult to argue that the intention was that an 'element' was refering to a 'twisted-pair' and not each wire of the twisted pair/s. One might also argue that a cable is not a cable unless made of more than one separately insulated wires, but this is a somewhat more tenous argument. Dave Paolo Roncone wrote: Doug, I re-paste the first part of the definition in IEEE 802.3 (2000): 1.4.249 shielded twisted-pair (STP)cable: An electrically conducting cable,comprising one or more ele- ments,each of which is individually shielded.There may be an overall shield,in which case the cable is referred to as shielded twisted-pair cable with an overall shield (from ISO/IEC 11801:1995) My understanding is that elements should refer to individual PAIRS (signal/return), rather than single wires. But - as I said in my previous e-mail - I'd like to check whether this is put into practice by some vendors. So far I didn't get any clue on this. The STP cables that I found so far (form a couple of vendors) have just an OVERALL shield around all wires, and these are identical to FTP (Foiled Twisted Pair) cables that are also on the market. I agree with you, something doesn't sound right... Paolo At 09:36 05/09/2001 -0700, Doug McKean wrote: Paolo Roncone wrote: The reason of my inquiry is that we bought samples of STP and FTP cat.5 cables for 10bT ethernet applications from different vendors and to our surprise we discovered that both STP and FTP types have an overall (external) shield made of aluminum foil, but no shields on individual wires or wire couples (as per 802.3 definition above). Maintaining a characteristic impedence of a twisted pair by shielding the individual wires of that twisted pair? Something doesn't sound right. - Doug McKean --- This message is from the IEEE EMC Society Product Safety Technical Committee emc-pstc discussion list. Visit our web site at: http://www.ewh.ieee.org/soc/emcs/pstc/ To cancel your subscription, send mail to: majord...@ieee.org with the single line: unsubscribe emc-pstc For help, send mail to the list administrators: Michael Garretson: pstc_ad...@garretson.org Dave Heald davehe...@mediaone.net For policy questions, send mail to: Richard Nute: ri...@ieee.org Jim Bacher: j.bac...@ieee.org All emc-pstc postings are archived and searchable on the web at: No longer online until our new server is brought online and the old messages are imported into the new server. --- Paolo Roncone EMC Compliance Engineer - Cisco Photonics Italy via Philips 12 - Monza (MI) 20052 mailto:pronc...@cisco.com phone: +39 039209 1538 fax: +39 039209 2036 -- Regards Dave Instone. Compliance Engineer Storage Systems Development, MP24/22 Xyratex, Langstone Rd., Havant, Hampshire, P09 1SA, UK. Tel: +44 (0)23-92-496862 (direct line) Fax: +44 (0)23-92-496014 http://www.xyratex.com Tel: +44 (0)23-92-496000 --- This message is from the IEEE EMC Society Product Safety Technical Committee emc-pstc discussion list. Visit our web site at: http://www.ewh.ieee.org/soc/emcs/pstc/ To cancel your subscription, send mail to: majord...@ieee.org with the single line: unsubscribe emc-pstc For help, send mail to the list administrators: Michael Garretson:pstc_ad...@garretson.org Dave Healddavehe...@mediaone.net For policy questions, send mail to: Richard Nute: ri...@ieee.org Jim Bacher: j.bac...@ieee.org All emc-pstc postings are archived and searchable on the web at: No longer online until our new server is brought online and the old messages are imported into the new server.
Re: New laser standards
Doug, You may find the following usefull ftp://ftp.t11.org/t11/pub/fc/10gfc/01-276v0.pdf Although titled 'Laser Safety for Parallel Optic Products' the fist few pages deal with changes in eyesafety generally Dave Massey, Doug C. wrote: Hello Group - Can anyone direct me to an informative article, link, etc., that summarizes the impact of Amendment 2 to IEC 60825-1, released in January of this year ? I've reviewed the amendment and am aware of the basic differences it brings in classification, but it sure would be nice to have a synopsis of all the changes. Also, does anyone know how soon the changes will be incorporated into a new release of the standard ? The IEC website does not list a target date for release, although the status of edition 1.2 shows it being out for printing since early May. Also, CDRH Laser Notice # 50, published late May, harmonizes, to some degree, 21CFR to the IEC 60825-1 standard, with the notable exception of production line test requirments, record keeping, and some product marking requirements, which are being kept by the CDRH. Has anyone heard if the CDRH product report formats will be changed ? I'm thinking an IEC-60825-1 report, with US national deviations, if you will, may be acceptable to the CDRH at some point in the future, in lieu of their existing published report format. Of greater concern is the lack of a specified transition period and mandatory compliance dates in either standard (at least I can't find them). Will existing laser classifications be grandfathered? When will laser product manufacturers be required to label products according to the new classifications? I can see the new classifications causing much confusion among customers, who may have, say, Class2 laser products, then buying additional units of the same product, which might be labeled as Class 2M, for instance. Thanks for your help. Doug Massey Safety Approvals Engineer LXE, Inc. Norcross, GA., USA Ph. (770) 447-4224 x3607 FAX (770) 447-6928 e-mail: masse...@lxe.com Cruise our website at: http:\\www.lxe.com --- This message is from the IEEE EMC Society Product Safety Technical Committee emc-pstc discussion list. Visit our web site at: http://www.ewh.ieee.org/soc/emcs/pstc/ To cancel your subscription, send mail to: majord...@ieee.org with the single line: unsubscribe emc-pstc For help, send mail to the list administrators: Michael Garretson:pstc_ad...@garretson.org Dave Healddavehe...@mediaone.net For policy questions, send mail to: Richard Nute: ri...@ieee.org Jim Bacher: j.bac...@ieee.org All emc-pstc postings are archived and searchable on the web at: http://www.rcic.com/ click on Virtual Conference Hall, -- Regards Dave Instone. Compliance Engineer Storage Systems Development, MP24/22 Xyratex, Langstone Rd., Havant, Hampshire, P09 1SA, UK. Tel: +44 (0)23-92-496862 (direct line) Fax: +44 (0)23-92-496014 http://www.xyratex.com Tel: +44 (0)23-92-496000 --- This message is from the IEEE EMC Society Product Safety Technical Committee emc-pstc discussion list. Visit our web site at: http://www.ewh.ieee.org/soc/emcs/pstc/ To cancel your subscription, send mail to: majord...@ieee.org with the single line: unsubscribe emc-pstc For help, send mail to the list administrators: Michael Garretson:pstc_ad...@garretson.org Dave Healddavehe...@mediaone.net For policy questions, send mail to: Richard Nute: ri...@ieee.org Jim Bacher: j.bac...@ieee.org All emc-pstc postings are archived and searchable on the web at: http://www.rcic.com/ click on Virtual Conference Hall,
Re: 2. 4 GHz cordless telephone, question of general interest
Ken Javor wrote: Just goes to show you can find anything on the net. I have measured leakage from microwave ovens and every one was at 2450 MHz. And that IS a resonant frequency for water and water alone. That's why you can put waterless items in and they won't heat up, Hm, now I wonder how the the totally dry and empty pottery plate I put in the microwave to heat (before I put my non microwave cooked food on it) gets too hot to hold after just 60 seconds at 650W. and also why you should never run a microwave oven without a water load: with no load you get high vswr and the magnetron can be damaged by reflected energy. -- Regards Dave Instone. Compliance Engineer Storage Systems Development, MP24/22 Xyratex, Langstone Rd., Havant, Hampshire, P09 1SA, UK. Tel: +44 (0)23-92-496862 (direct line) Fax: +44 (0)23-92-496014 http://www.xyratex.com Tel: +44 (0)23-92-496000 --- This message is from the IEEE EMC Society Product Safety Technical Committee emc-pstc discussion list. Visit our web site at: http://www.ewh.ieee.org/soc/emcs/pstc/ To cancel your subscription, send mail to: majord...@ieee.org with the single line: unsubscribe emc-pstc For help, send mail to the list administrators: Michael Garretson:pstc_ad...@garretson.org Dave Healddavehe...@mediaone.net For policy questions, send mail to: Richard Nute: ri...@ieee.org Jim Bacher: j.bac...@ieee.org All emc-pstc postings are archived and searchable on the web at: http://www.rcic.com/ click on Virtual Conference Hall,
Re: EN Documents
Probably, but then you might want to 'educate' yourself by reading the standard! Definitely my own opinion! Dick Grobner wrote: Doesn't this infringe on copyright laws? My understanding is - that you can copy a limited number of pages only if it is used for educational purposes. I cannot fine my reference document at the moment but remember reading this not so long ago. -Original Message- From: Chris Chileshe [mailto:chris.chile...@ultronics.co.uk] Sent: Thursday, April 12, 2001 6:50 AM To: emc-p...@majordomo.ieee.org Subject: RE: EN Documents In addition to what John Woodgate has written below.. If you are interested in only a *very* small section of the standard, then you may be able to photocopy a limited number of pages from your public library for a fee. However, chances are that if the standard is relevant, you will end up having to buy the whole document anyway. You will find the BSI website at http://www.bsi-global.com/index.html Regards - Chris Chileshe --- This message is from the IEEE EMC Society Product Safety Technical Committee emc-pstc discussion list. Visit our web site at: http://www.ewh.ieee.org/soc/emcs/pstc/ To cancel your subscription, send mail to: majord...@ieee.org with the single line: unsubscribe emc-pstc For help, send mail to the list administrators: Michael Garretson:pstc_ad...@garretson.org Dave Healddavehe...@mediaone.net For policy questions, send mail to: Richard Nute: ri...@ieee.org Jim Bacher: j.bac...@ieee.org All emc-pstc postings are archived and searchable on the web at: http://www.rcic.com/ click on Virtual Conference Hall,
Re: we need some information
Thank you Ross, Your quotation from Websters illustrates the point beautifully. Misuse of a word corrupts its original meaning. If done often enough the dictionaries, like all good dictionaries should, list these technically incorrect but common meanings. This is how languages develope, but also how they get corrupted. I have no problem with the first, but a pet hate of the second. And a problem with my punctuation it seems g Dave Lichtenstein, Ross wrote: Here's Webster's Second Edition New World Dictionary definition: ball bearing 1. a bearing in which the moving parts revolve or slide on freely rolling metal balls so that friction is reduced 2. any of such metal balls I think, however, that it would be more appropriate and descriptive to identify these objects by any of the following: BALL, BEARING (military form) BEARING BALL BALL BEARING BALL Ross ;) -Original Message- From: david_inst...@uk.xyratex.com [mailto:david_inst...@uk.xyratex.com] Sent: Wednesday, November 29, 2000 5:03 AM To: Cortland Richmond Cc: michael.sundst...@nokia.com; ieee pstc list Subject: Re: we need some information Just a litle pet hate of mine, but ball BEARINGS consist of both the races AND the STEEL BALL (or plastic sometimes) but that little round bit we all like to use as missiles or for the game of marbles is a BALL not a ball BEARING. -- Regards Dave Instone. Compliance Engineer Test Systems, MP24/22 Xyratex, Langstone Rd., Havant, Hampshire, P09 1SA, UK. Tel: +44 (0)23-92-496862 (direct line) Fax: +44 (0)23-92-496014 http://www.xyratex.com Tel: +44 (0)23-92-496000 --- This message is from the IEEE EMC Society Product Safety Technical Committee emc-pstc discussion list. To cancel your subscription, send mail to: majord...@ieee.org with the single line: unsubscribe emc-pstc For help, send mail to the list administrators: Jim Bacher: jim_bac...@mail.monarch.com Michael Garretson:pstc_ad...@garretson.org For policy questions, send mail to: Richard Nute: ri...@ieee.org
Re: we need some information
Just a litle pet hate of mine, but ball BEARINGS consist of both the races AND the STEEL BALL (or plastic sometimes) but that little round bit we all like to use as missiles or for the game of marbles is a BALL not a ball BEARING. Cortland Richmond wrote: Slingshot? Heh! Used a CRT focussing coil with a Lionel train transformer, actually. By quickly making and breaking the connections I could time the current so it would accelerate the ball bearing smartly. Cortland == Original Message Follows Date: 28-Nov-00 06:20:06 MsgID: 1077-5083 ToID: 72146,373 From: michael.sundst...@nokia.com INTERNET:michael.sundst...@nokia.com Subj: RE: we need some information Chrg: $0.00 Imp: Norm Sens: StdReceipt: NoParts: 1 From: michael.sundst...@nokia.com Subject: RE: we need some information Date: Tue, 28 Nov 2000 08:16:19 -0600 A slingshot? == End of Original Message = --- This message is from the IEEE EMC Society Product Safety Technical Committee emc-pstc discussion list. To cancel your subscription, send mail to: majord...@ieee.org with the single line: unsubscribe emc-pstc For help, send mail to the list administrators: Jim Bacher: jim_bac...@mail.monarch.com Michael Garretson:pstc_ad...@garretson.org For policy questions, send mail to: Richard Nute: ri...@ieee.org -- Regards Dave Instone. Compliance Engineer Test Systems, MP24/22 Xyratex, Langstone Rd., Havant, Hampshire, P09 1SA, UK. Tel: +44 (0)23-92-496862 (direct line) Fax: +44 (0)23-92-496014 http://www.xyratex.com Tel: +44 (0)23-92-496000 --- This message is from the IEEE EMC Society Product Safety Technical Committee emc-pstc discussion list. To cancel your subscription, send mail to: majord...@ieee.org with the single line: unsubscribe emc-pstc For help, send mail to the list administrators: Jim Bacher: jim_bac...@mail.monarch.com Michael Garretson:pstc_ad...@garretson.org For policy questions, send mail to: Richard Nute: ri...@ieee.org
RE: Have I baffled the Product Safety Technical Committee?????
The following from a collegue of mine may help: If it helps improve the confusion over UL and their flame ratings, a Class 2 Flammability rating comes from UL900 Air Filter Units. Taking straight form the standard, Class 1 Units - Those that, when clean, do not contribute fuel when attacked by flame and emit only negligible amounts of smoke. Class 2 Units - Those that, when clean, burn moderately when attached by flame or emit moderate amounts of smoke, or both. We had a similar problem on a product being tested to UL3111-1 where a Class 1 filter material was employed. We tested the material ourselves and found it to correspond to an HF-1 rating. With this and the Class 1 definition, UL accepted it's use under the conditions of Annex F of UL3111-1 - Reducing the Fuel available to a fire. -- Regards Dave Instone. Compliance Engineer Test Systems, MP24/22 Xyratex, Langstone Rd., Havant, Hampshire, P09 1SA, UK. Tel: +44 (0)23-92-496862 (direct line) Fax: +44 (0)23-92-496014 http://www.xyratex.com Tel: +44 (0)23-92-496000 --- This message is from the IEEE EMC Society Product Safety Technical Committee emc-pstc discussion list. To cancel your subscription, send mail to: majord...@ieee.org with the single line: unsubscribe emc-pstc For help, send mail to the list administrators: Jim Bacher: jim_bac...@mail.monarch.com Michael Garretson:pstc_ad...@garretson.org For policy questions, send mail to: Richard Nute: ri...@ieee.org
Re: earth bonding stud
I'm going back at least a dozen years to when I last had to deal with this. At the time the requirement was that the earth wire could not be removed without the use of a tool. I found that the tag gave me enough torque with my thumb to loosen the nut sufficiently to enable the (nyloc) nut to be undone with my fingers. We cured the problem by placing the stud close to a side frame member so that it prevented rotating the tag. -- Regards Dave Instone. Compliance Engineer Test Systems, MP24/22 Xyratex, Langstone Rd., Havant, Hampshire, P09 1SA, UK. Tel: +44 (0)23-92-496862 (direct line) Fax: +44 (0)23-92-496014 http://www.xyratex.com Tel: +44 (0)23-92-496000 Colgan, Chris wrote: Hello group Having only ever dealt with Class II double insulated products, we are going to produce a Class I earthed product. We have an M4 stud in the baseplate and I have to spec the method of connecting the stud to the IEC mains inlet to provide chassis bonding to earth. I was going to suggest the following stack of parts: M4 crinkle washer, M4 solder terminal, M4 crinkle washer, M4 Nyloc nut. Does anyone think that this might prove unsuitable? Regards Chris Colgan EMC Safety TAG McLaren Audio Ltd The Summit, Latham Road Huntingdon, Cambs, PE29 6ZU United Kingdom * Phone: +44 (0)1480 415627 * Fax: +44 (0)1480 415689 * Mailto:chris.col...@tagmclarenaudio.com * http://www.tagmclarenaudio.com --- This message is from the IEEE EMC Society Product Safety Technical Committee emc-pstc discussion list. To cancel your subscription, send mail to: majord...@ieee.org with the single line: unsubscribe emc-pstc For help, send mail to the list administrators: Jim Bacher: jim_bac...@mail.monarch.com Michael Garretson:pstc_ad...@garretson.org For policy questions, send mail to: Richard Nute: ri...@ieee.org
Re: High voltage power lines vs human/animal/plant safety
Lizette, My fiancee works in this field. The best place to start would be the website of the bioelectromagnetics society http://www.bioelectromagnetics.com They have a meeting every year in the US. I happened to be in the same hotel on a Fibre Channel meeting as this society in '98. I remember seeing some reference to lichen under HV lines being affected, the research in this case was done in the UK, Wales I think, but I can't remember by whom. I'm going to be out of email contact for the following week but contact me 14 Aug onwards if you need more leads. -- Regards Dave Instone. Compliance Engineer Test Systems, MP24/22 Xyratex, Langstone Rd., Havant, Hampshire, P09 1SA, UK. Tel: +44 (0)23-92-496862 (direct line) Fax: +44 (0)23-92-496014 http://www.xyratex.com Tel: +44 (0)23-92-486363 Jim Bacher wrote: forwarding for Lizette Reply Separator Subject:High voltage power lines vs human/animal/plant safety Author: Lizette de Vries-Venter dvve...@sabs.co.za Date: 8/3/00 7:52 AM Hi Everyone I know this is not a new subject, but what I am looking for is the latest information from credible sources on these issues. We are going to do a wide spread study that inlcudes these concerns and I would like to consider the latest information and practices. Thank you, Lizette de Vries-Venter EXPLOSION PREVENTION TECHNOLOGY SABS Tel: +27 12 428 6990 Fax: +27 12 428 6854 E-mail: dvve...@sabs.co.za --- This message is from the IEEE EMC Society Product Safety Technical Committee emc-pstc discussion list. To cancel your subscription, send mail to: majord...@ieee.org with the single line: unsubscribe emc-pstc For help, send mail to the list administrators: Jim Bacher: jim_bac...@mail.monarch.com Michael Garretson:pstc_ad...@garretson.org For policy questions, send mail to: Richard Nute: ri...@ieee.org
Re: Equipment Rental 2
Try http://www.livingston.co.uk/rental.html rehel...@mmm.com wrote: Thanks for everyone who sent me rental information but I did not word the question correctly. I would prefer not to take equipment with me from the U.S. to the U.K. I am looking to rent the equipment in England preferably near Darlington. Thanks, Bob Heller === -- Forwarded by Robert E. Heller/US-Corporate/3M/US on 07/11/2000 07:31 AM --- Robert E. Heller 07/10/2000 01:27 PM 3M Product Safety, St. Paul, MN 55107 76-1-01 EMC Laboratory Fax: 651-778-6252 To: emc-p...@majordomo.ieee.org cc: Subject: Equipment Rental I need to rent the following equipment (preferrably in Darlington, U.K.): * Antennas (EMC 30-1000 MHz) * Spectrum Analyzer/EMI Receiver * Pre-amp (30-1000 MHz) * 2M Tripod Anyone know of a company? Regards, Bob Heller --- This message is from the IEEE EMC Society Product Safety Technical Committee emc-pstc discussion list. To cancel your subscription, send mail to: majord...@ieee.org with the single line: unsubscribe emc-pstc For help, send mail to the list administrators: Jim Bacher: jim_bac...@mail.monarch.com Michael Garretson:pstc_ad...@garretson.org For policy questions, send mail to: Richard Nute: ri...@ieee.org -- Regards Dave Instone. Compliance Engineer Test Systems, MP24/22 Xyratex, Langstone Rd., Havant, Hampshire, P09 1SA, UK. Tel: +44 (0)23-92-496862 (direct line) Fax: +44 (0)23-92-496014 http://www.xyratex.com Tel: +44 (0)23-92-486363 --- This message is from the IEEE EMC Society Product Safety Technical Committee emc-pstc discussion list. To cancel your subscription, send mail to: majord...@ieee.org with the single line: unsubscribe emc-pstc For help, send mail to the list administrators: Jim Bacher: jim_bac...@mail.monarch.com Michael Garretson:pstc_ad...@garretson.org For policy questions, send mail to: Richard Nute: ri...@ieee.org
Re: Stroboscopic light sources
Strobe lights can and do induce epileptic fits in people that are susceptible to these fits. What is worse is that it can cause a person who is a latent epileptic (ie never had a fit) to actually become one (ie they continue to have fits for the rest of their lives). Strobe lights are used during an EEG ( particularly with childen) to determine if a person is a latent epileptic. The worst frequencies are apparently around the 15Hz area. The source of this knowledge? Talking to the specialist while my son was having these tests done (fortunately he was diagnosed clear). The specialists opinion was that disco strobe lights should be banned. Nick Williams wrote: Does anyone know of any good resources or actual requirements for the safe use of stroboscopic light sources? The application is a public science display. I recall rumors of stroboscopes operating at certain frequencies being capable of triggering fits, but whether this is just an old wive's tale or has some basis in reality I am unclear, not do I know of any other potential hazards (except the obvious dangers of syncronisation with moving machinery). All input gratefully received. Regards Nick. --- This message is from the IEEE EMC Society Product Safety Technical Committee emc-pstc discussion list. To cancel your subscription, send mail to: majord...@ieee.org with the single line: unsubscribe emc-pstc For help, send mail to the list administrators: Jim Bacher: jim_bac...@mail.monarch.com Michael Garretson:pstc_ad...@garretson.org For policy questions, send mail to: Richard Nute: ri...@ieee.org -- Regards Dave Instone. Compliance Engineer Test Systems, MP24/22 Xyratex, Langstone Rd., Havant, Hampshire, P09 1SA, UK. Tel: +44 (0)23-92-496862 (direct line) Fax: +44 (0)23-92-496014 http://www.xyratex.com Tel: +44 (0)23-92-486363 --- This message is from the IEEE EMC Society Product Safety Technical Committee emc-pstc discussion list. To cancel your subscription, send mail to: majord...@ieee.org with the single line: unsubscribe emc-pstc For help, send mail to the list administrators: Jim Bacher: jim_bac...@mail.monarch.com Michael Garretson:pstc_ad...@garretson.org For policy questions, send mail to: Richard Nute: ri...@ieee.org
Re: EMC Safety: requirements for BCIQ approval
To all those who replied to my posting, Thank you. (I wonder how many deleted it thinking it was on the proposed split. [A Bad Idea] It was tricky trying to compose a title that would get through and also go along with the proposal for prefixes of EMC and or Safety! ) -- Regards Dave Instone. Compliance Engineer Test Systems, MP24/22 Xyratex, Langstone Rd., Havant, Hampshire, P09 1SA, UK. Tel: +44 (0)23-92-496862 (direct line) Fax: +44 (0)23-92-496014 http://www.xyratex.com Tel: +44 (0)23-92-486363 --- This message is from the IEEE EMC Society Product Safety Technical Committee emc-pstc discussion list. To cancel your subscription, send mail to: majord...@ieee.org with the single line: unsubscribe emc-pstc For help, send mail to the list administrators: Jim Bacher: jim_bac...@mail.monarch.com Michael Garretson:pstc_ad...@garretson.org For policy questions, send mail to: Richard Nute: ri...@ieee.org
Re: Lead Banned in Europe Japan?
simon_...@emc.com wrote: A little research on the Internet showed that the proposal comes from a tin manufacturers association. I cannot give you a direct sourse at the moment, but it was not difficult to find. The association's goal is to replace lead with tin. Hm, 60/40 tin tin solder, should be fun! -- Regards Dave Instone. Compliance Engineer Test Systems, MP24/22 Xyratex, Langstone Rd., Havant, Hampshire, P09 1SA, UK. Tel: +44 (0)23-92-496862 (direct line) Fax: +44 (0)23-92-496014 http://www.xyratex.com Tel: +44 (0)23-92-486363 - 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: Y3K
Derek Walton wrote: Gary, as a European school kid, we had it driven into us that: K is for the binary world, i.e. 1K=1024 k is the metric symbol for 1000 The trouble comes in when folks get sloppy and substitute willy nilly. Perhaps we should measure current in volts...;-))) Someone on this thread mentioned the new IEC units for binary numbers 1024=killi (ki) etc. The following posting is from the T11 reflector. The website refered to is www.t11.org try the DOCS link on the left. When downloading documents click on the file desription PDF TXT etc on the right of the file name to download. __start of posting_ * * From the fc reflector, posted by: * Ed Grivna e...@cypress.com * Hi Gang, it took a while, but I was able to track down the IEC reference that documents usage of extensions to the SI system of units for binary-weighted numbers. The IEC standard is: IEC 60027-2. Letter symbols to be used in electrical technology. Part-2: Telecommunications and electronics. Amendment 2, 1999-01. I have also found out that the IEEE has a draft standard in place (P1541/D2) documenting the usage of these same units. I will post a copy of the IEEE draft, and a couple pages of the IEC standard to the t11 web site. With this information in hand, I will be making a formal request for adoption of same at the next T11.2 and T11 plenaries. end of posting___ Regards, -- Regards Dave Instone. Compliance Engineer Test Systems, MP24/22 Xyratex, Langstone Rd., Havant, Hampshire, P09 1SA, UK. Tel: +44 (0)23-92-496862 (direct line) Fax: +44 (0)23-92-496014 http://www.xyratex.com Tel: +44 (0)23-92-486363 - 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: Ground lugs
Lacey,Scott wrote: James, Most equipment today uses crimp-on ring terminals, secured to a ground stud using a star washer and hex nut. The ground wire from the power inlet goes on first, and other safety grounds are stacked on top, each with its own star washer and nut. I have never had agency approval problems with this type of construction. You must use a double crimp ring terminal, one that grips the wire insulation securely. Many years ago when I worked for a different company we used the crimp terminal and star washer approach. We fell foul of the requirement that to remove the earth connection 'requires the use of a tool'. I found that the crimp part gave me sufficient grip to rotate the ring terminal thereby undoing the nut! We solved the problem by placing the stud close to a surface perpendicular to the one in which the stud was fixed. -- Regards Dave Instone. Compliance Engineer Test Systems, MP24/22 Xyratex, Langstone Rd., Havant, Hampshire, P09 1SA, UK. Tel: +44 (0)23-92-496862 (direct line) Fax: +44 (0)23-92-499315 http://www.xyratex.com Tel: +44 (0)23-92-486363 - 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 standards -404 error
Actually in the original posting the line wrap put the remaining characters on the next line so they didn't get included in the 'link'. If you click as before and then when you get the 404 add 't.html' to the end of your 'location' window and hit return it works just fine. In simple terms the url should end with reflist.html and not reflis Just one of the problems of telling your mailer to auto wrap lines exceeding a certain length! Dave Instone Ehler, Kyle wrote: This link: http://europa.eu.int/comm/dg03/directs/dg3b/newapproa/eurstd/harmstds/reflis http://europa.eu.int/comm/dg03/directs/dg3b/newapproa/eurstd/harmstds/refli s Produces a '404' for me. I get as far as http://europa.eu.int/comm/dg03/directs/dg3b/ http://europa.eu.int/comm/dg03/directs/dg3b/newapproa/eurstd/harmstds/refli s before the pages are unavailable. Thanks, Kyle - 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). -- Regards Dave Instone Test Systems, MP24/22 Xyratex, Langstone Rd., Havant, Hampshire, P09 1SA, UK. Tel +44 (0)1705 486363 ext 3071 or +44 (0)1705 443071 (direct line) Fax +44 (0)1705 499315 http://www.xyratex.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).
