RE: EMC 2001 - practical or technical subjects ?
Gunter: You really should attend: this is a great event not only for both technical and practical papers and presentations (there are also workshops), but a terrific opportunity to meet peers and colleagues. Some friendships will last a lifetime (or at least until you get into an impassioned debate about the merits of various standards laughing). Montreal is also a neat city, and Canada is actually an affordable place to visit. If you come, try to take a few extra days for visiting - Ottawa and Quebec City are each only 2 hours away (in opposite directions). If you want to know more, see the website: www.2001emcmtl.org Best regards, Kate Kathy M. MacLean President, APREL Laboratories -EMC-RF Safety-Antenna design/test-SAR/MPE- -Environmental-Acoustics-Wireless- 51 Spectrum Way, Nepean (Ottawa), Ontario K2R 1E6 (613) 820-2730 fax (613) 820-4161 cell (613) 791-3777 Web site: http://www.aprel.com - watch for our new web site coming soon! -Original Message- From: gunter_j_ma...@embraco.com.br [mailto:gunter_j_ma...@embraco.com.br] Sent: June 27, 2001 7:17 AM To: emc-p...@majordomo.ieee.org Subject: EMC 2001 - practical or technical subjects ? List I would like to have some comments from the list about the 2001 International Symposium on Electromagnetic Compatibility. I have never gone to this symposium. My question is about the subjects covered. Are the subjects more technical (from institutes and Universities) or practical (from the industry) ? If it is a technical symposium, could you indicate a practical one ? Thanks Günter J. Maass EMBRACO S.A. --- 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, --- 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,
Conducted Emissions Test in Telephones
Hello Group, I'd like to know if telephone devices (plain telephone devices) must be tested for conducted emissions (CISPR 22, Class B). And if they must, what is the proceeding for testing them? Should I test with the telephone in stand-by (no calls) or during a call?? Thanks in advance for the answers. Best Regards Muriel --- 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:EMC 2001 - practical or technical subjects ?
Gunter, there will be several sessions on safety and there will also be a meeting for the TC-8 committee that runs this emc-pstc list server. To see some of the material presented at last years safety session, check out this site: http://www.ewh.ieee.org/soc/emcs/pstc/TechSpk/ground97.pdf http://www.ewh.ieee.org/soc/emcs/pstc/tech-spk.htm Jim Jim Bacher, Senior Engineer Paxar - Monarch e-mail: jim_bac...@monarch.com voice: 1-937-865-2020 fax: 1-937-865-2048 Reply Separator Subject:EMC 2001 - practical or technical subjects ? Author: gunter_j_ma...@embraco.com.br List-Post: emc-pstc@listserv.ieee.org Date: 6/27/01 8:16 AM List I would like to have some comments from the list about the 2001 International Symposium on Electromagnetic Compatibility. I have never gone to this symposium. My question is about the subjects covered. Are the subjects more technical (from institutes and Universities) or practical (from the industry) ? If it is a technical symposium, could you indicate a practical one ? Thanks Günter J. Maass EMBRACO S.A. --- 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: FCC + FCC = FCC? - Outlaw
Actually went through this with a commercial product in about 1984. I received a letter (or call) from the FEDS that the police couldn't transmit or receive when they were going past a bank and they were blaming our equipment, turns out they were right. Jumped on a plane, found the problem and fixed it. (Some of the equipment had to be turned off to find the signal so no wonder I missed it during test) Wrote back to the FEDS, they called the cops who confirmed the problem was cured and I never heard from the FEDS again. I suspect it would have been different if I hadn't responded quickly. Gary While I had all of the equipment in the field updated - I was never asked nor did I tell the FEDS that we fixed all occurrences of the equipment. -Original Message- From: Ken Javor [mailto:ken.ja...@emccompliance.com] Sent: Monday, June 25, 2001 10:26 AM To: Chris Maxwell; chris maxwell; 'emc-pstc internet forum' Subject: Re: FCC + FCC = FCC? - Outlaw Someone else on this thread quoted chapter and verse from Title 47 of the US code stating that individuals who built their own ITE were not covered by Part 15 rules. Regardless of that, I find it hard to imagine the FCC going after any individual other than to make him fix an interference or shut off an interference source. This comment specifically aimed at incidental transmissions. it does not apply to the case of an individual intentionally transmitting rf energy at levels greater than allowed by law. -- From: Chris Maxwell chris.maxw...@nettest.com To: 'Ken Javor' ken.ja...@emccompliance.com, Chris Maxwell chris.maxw...@nettest.com, 'EMC-PSTC Internet Forum' emc-p...@majordomo.ieee.org Subject: RE: FCC + FCC = FCC? - Outlaw Date: Mon, Jun 25, 2001, 8:00 AM Ah, I see what you're saying. Point 7 was intended to say that a test should be performed if there was any doubt of a safety problem. I never intended to say that someone should market a product if they know that it will interfere with people's reception of radio or TV. Even I Love Lucy re-runs. I'll restate with a more clear example. Someone could buy a system with an FCC Class B computer, an FCC class B printer, an FCC class B keyboard and an FCC class B mouse only to find out that, by some freak of physics (a resonance condition ...) this system is now radiating at levels higher than class B and it is fouling up a neighbor's TV reception. In this case, the person would be required to fix the emissions, after the fact. I think we can all agree on this. The finer point of what I'm saying is: If this person was ever brought to the attention of the FCC, there would probably be no punitive action against him/her (other than correcting the emissions) because this person should be able to connect FCC approved equipment together, without performing a system level EMI test, with a reasonable assumption of conformity. But, if the person assembling this system had any knowledge beforehand that the emissions could cause a personal or public safety problem; I don't think the FCC would be so nice. It would have been more clear if I had never mentioned Lucy at all. Chris -Original Message- From: Ken Javor [SMTP:ken.ja...@emccompliance.com] Sent: Friday, June 22, 2001 6:08 PM To: Chris Maxwell; 'EMC-PSTC Internet Forum' Subject: Re: FCC + FCC = FCC? - Outlaw I have no trouble with your checklist except #7. Like it or not, the FCC RE limits protect I Love Lucy broadcasts. More basically, the limits protect the broadcasters' market. If excess RE from consumer appliances interfere with reception in fringe areas, the broadcaster's customer base is reduced, which in turn reduces the value of advertising time that he can charge. You are literally putting him out of business, and he has a license to transmit and your appliance does not. -- From: Chris Maxwell chris.maxw...@nettest.com To: 'EMC-PSTC Internet Forum' emc-p...@majordomo.ieee.org Subject: FW: FCC + FCC = FCC? - Outlaw Date: Fri, Jun 22, 2001, 2:59 PM Hi Ken, Come on guys, these flames are burning me :-) I'm just advocating sound engineering judgement. I understand that a user would have to take adequate measures if his/her appliance was messing up the neighbor's I Love Lucy reception. I understand that those adequate measures would include fixing the emissions or turning the unit off. The 120dB safety margin is there. We can't argue whether it is right or wrong. It's a fact.I agree that it would be wrong for anybody to abuse the safety margin and willfully produce a non-compliant product. One 911 that gets slammed by a non-compliant product would be too much. More to the point. I assume that you have a good enough background in EMC to make a sound judgement. (probably more so than I) What would you do with a product that you evaluated using my checklist? Would you have your
World-wide approvals radio transmitters
HI all ! I guess this question has been addressed during the last year, but I have lost track Product: Radio transmitter/receiver (10-12GHZ) We want access to the following markeds: 1. Europe (CE-marking, EMC,LVD,RTTE) 2. US (UL, FCC) 3. Canada (CSA) 4. Japan (VCCI) 5. Other places (CB scheme) Am I missing something regarding the above mentioned markeds and regulations ? 'Other places' could be anywhere, but CB might be good to have anyway ? Any suggestion of a web-site which covers the EMC and safety regulations in different countries ? Thanks for feedback. Best regards Amund Westin, Oslo/Norway -- Get your firstname@lastname email for FREE at http://Nameplanet.com/?su --- 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: A public apology to Agilent
It takes a lot of personal integrity to deliver a public apology. Hats off to Mike for being a stand-up guy. Something this world could use more of. Michael Taylor Colorado -Original Message- From: Michael Mertinooke [mailto:mertino...@skyskan.com] Sent: Tuesday, June 26, 2001 11:13 AM To: emc-p...@ieee.org Subject: A public apology to Agilent Hi; A couple weeks ago I politely criticized the HP/Agilent E7401A spectrum analyzer. Okay, so I called it a piece of garbage. That was based on two basic facts: 1) It was ridiculously user-unfriendly. 2) Customer support was friendly but unhelpful. I now wish to publicly apologize. Two nice people at Agilent, Ms. Cathy Kirk and Mr. Mike Medley, have invested considerable time and effort on my behalf. I now have an analyzer that is much less user-unfriendly. And Customer Support, as represented by these two people, has done a tremendous job of diagnosing and resolving my issues. Best of all, the new firmware has added a bunch of features that I will no doubt find useful some day. Regards, Mike Mertinooke --- 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: In-line Fuses
The UK Company Bulgin make a series of in-line fusesholders that are rated at 10A 250V when used in equipment but only 50V when directly accessible to touch. They come in sizes for fuses 5 x 20mm, 0.25 x 1 in and 0.25 x 1.25 in and in unsealed and IP66 sealed verions. See their web site:- www.bulgin.co.uk/Products/Fuseholders/In-Line_Fuseholders.html They claim to have a US distributer but I could not get that bit of their web site to work. In the UK they are distributed by the UK branch of Arrow, perhaps it is the same in the US. I have not used them so I do not know how good they are . Nick Rouse - Original Message - From: brian_ku...@leco.com Subject: In-line Fuses We have an application where an In-Line Fuse would be an easy fit to a problem. The fuse and holder would be added to an existing internal cable harness in a piece of Lab Equipment (EN61010-1 for safety). The wire that needs the fuse has 120 Volts ACrms and we need to limit the current to 5 amps. The 120 volts derives from the secondary of an isolation/step down transformer who's primary is attached to the 230Vrms mains. While looking for a fuse holder I'm finding that I can't find one that is rated for use over 32 volts. Does anyone know of a manufacturer who makes an In-Line Fuse Holder that meets the safety requirements and is rated for 120Vrms? Thank you for your help. Brian Kunde LECO Corp. --- 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,
EMC on Low Voltage Devices
Consider an electronic device (ITE or other) that is powered from the secondary of a low power, 24V transformer. We sell the device and a transformer as a set to end users and the set has been tested to the appropriate EMC standards. We also sell just the device to dealers, some of which purchase the device without the transformer. Those dealers assume the responsibility of mating an acceptable power source with the device. Are we required to perform any additional EMC tests for the configuration that does not include the transformer, or is it sufficient to test with the transformer and list both configurations on the Declaration? Richard Woods --- 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,
Summary: Super Teenie 9 Pin DIN (all the great taste of a DB9 bu t less filling)
Hi, Just closing the loop for anyone who is interested. So far, I have received a few leads: Molex sells the connectors in kit form if you want to make your own cables. The parts are: Molex 83421-9014 for the connector shell kit and 83000-0083 for the pins (female). It is possible to make the cables by hand, but it takes extreme patience and the nimble fingers of a seamstress. For those without patience or seamstress dexterity, there is a crimping tool which costs about $700. National Instruments sells a ready made 8 stub cable which adapts the super teenie 9 pin DIN to a regular 9pin D-Sub. Their part number is 183286-08. The cost is about $35. Network Architects in Minnisota is a possible source for pre-made cable assemblies (my contact there is verifying that). Their phone number is 763-422-. I beleive that ITT Cannon may be another source for parts similar to Molex, but I have yet to find their equivalent part number. Nothing available from L-Com or Black Box. In short Beware the super teenie 9 pin DIN. Thanks to those who responded. Chris Maxwell Design Engineer - NetTest Optical Division email chris.maxw...@nettest.com phone +1 315 266 5128 fax +1 315 797 8024 NetTest 6 Rhoads Drive, Utica, NY 13502 USA web www.nettest.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,
RE: EMC 2001 - practical or technical subjects ?
Gunter In the course of producing our own guide to this year's Montreal Symposium, I read through the IEEE Advance program. This show (like most years) is a combination of theoretical and practical sessions. Some of the material covered is more for novices in the EMC field, and some for the more advanced. There are practical demonstrations on some of the days, also some workshops. And the show covers EMC in some specific industries - wireless technology, healthcare industry etc. I suggest the best way to get a sense of the Symposium (short of actually attending) is to look through the program - it is available online: http://www.2001emcmtl.org/program/p04.html Click on the black box - Download Advance Program Graham Kilshaw ITEM's 2001 EMC Symposium Guide -Original Message- From: gunter_j_ma...@embraco.com.br [mailto:gunter_j_ma...@embraco.com.br] Sent: Wednesday, June 27, 2001 7:17 AM To: emc-p...@majordomo.ieee.org Subject: EMC 2001 - practical or technical subjects ? List I would like to have some comments from the list about the 2001 International Symposium on Electromagnetic Compatibility. I have never gone to this symposium. My question is about the subjects covered. Are the subjects more technical (from institutes and Universities) or practical (from the industry) ? If it is a technical symposium, could you indicate a practical one ? Thanks Günter J. Maass EMBRACO S.A. --- 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, --- 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: Examples of EMC problems in the real world
Bob: It just occurred to me that list members may not be failimiar with the application of these components after manufacture. If needed I would be glad to elaborate. Basically, since conducted immunity also decreases conducted emissions its a double benefit. regards Ralph Cameron EMC Consulting and Suppression of Consumer Electronics (After sale) - Original Message - From: rehel...@mmm.com To: Ralph Cameron ral...@igs.net Cc: emc-p...@majordomo.ieee.org Sent: Wednesday, June 27, 2001 6:51 AM Subject: Re: Examples of EMC problems in the real world Ralph, what is a toroidal cord? Is it a power cord with toroids? Bob Heller 3M Product Safety, 76-1-01 St. Paul, MN 55107-1208 Tel: 651- 778-6336 Fax: 651-778-6252 --- 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: Examples of EMC problems in the real world
Bob, I wish it were then I wouldn't have to wind it. No my eyesight is getting poor and I mean toroidal ( ring / donut shaped ) core. of powdered iron material. Ralph - Original Message - From: rehel...@mmm.com To: Ralph Cameron ral...@igs.net Cc: emc-p...@majordomo.ieee.org Sent: Wednesday, June 27, 2001 6:51 AM Subject: Re: Examples of EMC problems in the real world Ralph, what is a toroidal cord? Is it a power cord with toroids? Bob Heller 3M Product Safety, 76-1-01 St. Paul, MN 55107-1208 Tel: 651- 778-6336 Fax: 651-778-6252 --- 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,
EMC 2001 - practical or technical subjects ?
List I would like to have some comments from the list about the 2001 International Symposium on Electromagnetic Compatibility. I have never gone to this symposium. My question is about the subjects covered. Are the subjects more technical (from institutes and Universities) or practical (from the industry) ? If it is a technical symposium, could you indicate a practical one ? Thanks Günter J. Maass EMBRACO S.A. --- 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: Examples of EMC problems in the real world
Ralph, what is a toroidal cord? Is it a power cord with toroids? Bob Heller 3M Product Safety, 76-1-01 St. Paul, MN 55107-1208 Tel: 651- 778-6336 Fax: 651-778-6252 --- 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: Examples of EMC problems in the real world
-Original Message- From: Gary McInturff [mailto:gary.mcintu...@worldwidepackets.com] Sent: Wednesday, June 20, 2001 2:12 PM To: EMC-PSTC (E-mail) Subject: Examples of EMC problems in the real world There have been requests in the past on this forum for examples of real world events that were EMC related, as I recall we got a few but not many examples. In an email with Ralph he mentioned some work and an article that he had written chronically some of these problems. I asked him for some of his examples and he kindly sent the items below and has graciously allowed me to forward them. Thanks Ralph, and I hope that you enjoy them as much as I did. Gary -Original Message- From: Ralph Cameron [mailto:ral...@igs.net] Sent: Tuesday, June 19, 2001 6:14 PM To: Gary McInturff Subject: Some life threatening cases of EMI and others Gary: These cases were reviewed in an article I wrote about 14-15 years ago. Most incidents could happen tomorrow and came from a record of emi cases reported to all Canadian district offices of what used to be called Communications Canada. The reports covered a planned three month monitoring period during which time ther were 439 emi related reports and another 242 cases of swamping ( RF overload of TV, radio etc.) If you consider that Canadian incidents represented about 8% of the total number of incidents in the U.S. at that time, it may help to place the occurrences in perspective. Since that time, Industry Canada has not recorded domestic problems or complaints due to a lack of immunity ( radiated or conducted) but do have an advisory bulletin specifying field strengths communication transmitter owners cannot exceed. These limits are taken from the EU requirements for electronic equipment radiated immunity . Not surprisingly, I have found at least 95% of interference cases have been resolved not by increasing radiated immunity but, by reducing or eliminating most of the conducted component. SNIP Ralph: When you describe the success of eliminating the conducted component, are you talking about preventing the energy from exiting the source equipment or preventing the energy from entering the conducted port of the victim equipment? If it's the former, then you are also reducing the radiated component (which radiates from the common powerlines). BTW, I have a 1 MB zip file with plots of the RF field strength that I measured at a number of the San Francisco BART stations. I'll email the package to anyone who would like a copy (email me directly, not through the list). The strongest field strengths were less than 10 V/M, and all originated from personal communication devices. Regards, 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 --- 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: Serial Number Format - Medical Devices
Hi Dick, Section (e) deals with items that have an shelf life (i.e. sterile products). Having the actual month and year makes perfect sense. Active devices usually are not date sensitive, except for usable lifetime (i.e. 10 years) as defined by the manufacture. The year of manufacture only, needs to be on the label per 13.3.l. It was my understanding that the actual year should be on the label. Symbol 6.16 of ISO 15223 can be used or the year (i.e. 01) has to be an integral part of the serial number. If it was a code in the serial number, how would the user know when the usable lifetime is up? Ned Devine Ned Devine Program Manager III Entela, Inc. 3033 Madison Ave. SE Grand Rapids, MI 49548 616 248 9671 Phone 616 574 9752 Fax ndev...@entela.com e-mail -Original Message- From: Dick Grobner [mailto:dick.grob...@medgraph.com] Sent: Monday, June 25, 2001 7:02 PM To: IEEE EMC-PSTC E-Mail Forum (E-mail) Subject: Serial Number Format - Medical Devices A question to the group: Referencing the Medical Device Directive, Annex I, paragraph 13.3 The label must bear the following particulars: (l), year of manufacture for active devices other than those covered by (e). This indication may be included in the batch or serial number. One of my colleagues (in another company) was told by their Notified Body (BSI) that it has been interpreted (by whom?) that this means the month and year needs to be embedded into the actual serial number, such as XXZZ1 whereas XX: month and ZZ: year (or similar). We have never encountered this with our Notified Body (TUV). Our S/N's cross back to a SN log which will reveal the month and year of manufacture. Who is right? Does anyone know where this official interpitation is coming from? The rational behind it? Thank You Dick Grobner Medical Graphics Corporation 350 Oak Grove Parkway St Paul MN 55127 651-766-3395 651-766-3389 (fax) dick.grob...@medgraph.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, --- 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,
A public apology to Agilent
Hi; A couple weeks ago I politely criticized the HP/Agilent E7401A spectrum analyzer. Okay, so I called it a piece of garbage. That was based on two basic facts: 1) It was ridiculously user-unfriendly. 2) Customer support was friendly but unhelpful. I now wish to publicly apologize. Two nice people at Agilent, Ms. Cathy Kirk and Mr. Mike Medley, have invested considerable time and effort on my behalf. I now have an analyzer that is much less user-unfriendly. And Customer Support, as represented by these two people, has done a tremendous job of diagnosing and resolving my issues. Best of all, the new firmware has added a bunch of features that I will no doubt find useful some day. Regards, Mike Mertinooke --- 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,
