Re: Laser Safety
Matt: In this case only interlocks can be applicable because practically somebody can get in danger with 3b laser (worse case). Yuriy Vygovskiy Engineering Design Compliance -Original Message- From: Matt Kilkenny mkilke...@opthos.com To: emc-p...@majordomo.ieee.org emc-p...@majordomo.ieee.org List-Post: emc-pstc@listserv.ieee.org Date: Friday, June 15, 2001 2:08 PM Subject: Laser Safety I have a question on lasers for ITE concerning IEC-825 and FDA requirements. According to IEC, class 3b lasers have to have safety doors (interlocks). Can automatic power reduction be used if you are not pumping the laser to a 3b class level of power. In other words, can we not put interlocks on the system if the 3b laser power has been reduced to a 3a or class 1 level through microprocessor limitating it? Or is their single fault concerns if the microprocessor fails? Thanks for any help, Matt Kilkenny mkilke...@opthos.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,
Re: (Assault and) Batteries (On The Planet) ...
Terry, Mike and other readers: Thank you for your very refreshing display of common sense and integrity. After reading reams of law and standards in all variations, I was ready to give up on this community. Everybody was attempting to split over again some already split legalistic hairs, but yours was the first contribution that really went for the core. I was tempted to submit as a motto for all this uproar the undying words of J.R. Ewing (you do remember Dallas, don't you?): Once you give up on integrity, everything else comes easy. Regards, Bogdan. Whitehouse, Terence (Terry) wrote: Mike, You deserve an award*** for your refreshing display of common sense. I suggest that we can all learn from your response. As responsible private individuals and regulatory guardians of our corporate interests, we should all be more willing to volunteer to do what is appropriate to protect everybody and everything around us from the (human), mechanical, electrical and toxic hazards so prevalent in our complex society. Too often, we spend time examining legislation and standards to decide how to define the bare minimum to be compliant with the production and use of the items for which we are responsible. As good citizens, we ought not to wait for legislation to force us to do the right thing. There is lots of information readily available, which, in conjunction with the ever louder voice of social conscience, should be more than sufficient for us to discharge our personal and regulatory responsibilities appropriately. *** Take a step outside to reward yourself with some deep breaths of fresh air - while there is still some around to inhale! (For the group members in the UK, as Del Boy would say - ... you know it makes sense ) Terry Whitehouse Avaya Regulatory Milpitas (408) 577-7714 -Original Message- From: Mike Murphy [mailto:mmur...@alesis.com] Sent: Friday, June 15, 2001 2:14 PM To: 'emc-p...@ieee.org' Subject: Batteries ... Doug, From an environmental, not compliance, standpoint, batteries leech nasty chemicals into the groundwater supply as they age in landfills. Enlightened communities sponsor 'hazardous waste roundups' periodically. So, my suggestion is to keep the dead batteries in a sealed container in the home until they can be handed off to qualified disposal specialists such as at these roundups. This is what I do as a matter of course--it's not difficult at all. For Our Little Planet, Mike Murphy --- 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,
(Assault and) Batteries (On The Planet) ...
Mike, You deserve an award*** for your refreshing display of common sense. I suggest that we can all learn from your response. As responsible private individuals and regulatory guardians of our corporate interests, we should all be more willing to volunteer to do what is appropriate to protect everybody and everything around us from the (human), mechanical, electrical and toxic hazards so prevalent in our complex society. Too often, we spend time examining legislation and standards to decide how to define the bare minimum to be compliant with the production and use of the items for which we are responsible. As good citizens, we ought not to wait for legislation to force us to do the right thing. There is lots of information readily available, which, in conjunction with the ever louder voice of social conscience, should be more than sufficient for us to discharge our personal and regulatory responsibilities appropriately. *** Take a step outside to reward yourself with some deep breaths of fresh air - while there is still some around to inhale! (For the group members in the UK, as Del Boy would say - ... you know it makes sense ) Terry Whitehouse Avaya Regulatory Milpitas (408) 577-7714 -Original Message- From: Mike Murphy [mailto:mmur...@alesis.com] Sent: Friday, June 15, 2001 2:14 PM To: 'emc-p...@ieee.org' Subject: Batteries ... Doug, From an environmental, not compliance, standpoint, batteries leech nasty chemicals into the groundwater supply as they age in landfills. Enlightened communities sponsor 'hazardous waste roundups' periodically. So, my suggestion is to keep the dead batteries in a sealed container in the home until they can be handed off to qualified disposal specialists such as at these roundups. This is what I do as a matter of course--it's not difficult at all. For Our Little Planet, Mike Murphy --- 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,
Clock dithering
3b2a4fda.8c64c...@mediaone.net, David Heald davehe...@mediaone.net inimitably wrote: Con's? None that I can think of, but...I have seen somewhere (maybe here??) that the EU is considering new regulations for modulated clocks, but this is in the early stages, so use them now while you can get the most benefit from them. That's correct. Digital TV has proved rather badly susceptible to interference from dithered clocks. -- Regards, John Woodgate, OOO - Own Opinions Only. Phone +44 (0)1268 747839 Fax +44 (0)1268 777124. http://www.jmwa.demon.co.uk Why not call a vertically- applied manulo-pedally-operated quasi-planar chernozem-penetrating and excavating implement a SPADE? --- 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: Status of Frequency extension of EN 61000-4-3
sb29ebc9@symbol.com, Sandy Mazzola mazzo...@symbol.com inimitably wrote: My question pertains to EN 55024:1998, Information Technology Equipment- Immunity Characteristics, flowing down to EN 61000-4-3 :1997, Radiated Immunity. I am looking for the status of a frequency extension to EN 6100-4-3 radiated Immunity. EN 61000-4-3:1997 lists 80 MHz to 1 GHz as the test frequency range. Is anyone aware of the Radiated Immunity requirements being extended to 3 Ghz or higher sometime in the near future. Nothing proposed yet, AFAIK. It would require a New Work Proposal to IEC SC77B, I think, to amend IEC/EN61000-4-3, and we have not seen one. If there are any drafts proposing this can you list the draft number. Finally, if no present plans exist could anyone venture a prediction for when and if the radiated Immunity frequency will be extended. Well, now you've drawn attention to the subject(;-) -- Regards, John Woodgate, OOO - Own Opinions Only. Phone +44 (0)1268 747839 Fax +44 (0)1268 777124. http://www.jmwa.demon.co.uk Why not call a vertically- applied manulo-pedally-operated quasi-planar chernozem-penetrating and excavating implement a SPADE? --- 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,
