Re: [PSES] FW: [PSES] EU sets EMC limits for London Olympics
I confess to a hint of British irony in my e-mail. J Michael Derby Regulatory Engineer ACB Europe From: Peter Tarver [mailto:ptar...@enphaseenergy.com] Sent: 09 August 2012 23:29 To: EMC-PSTC@LISTSERV.IEEE.ORG Subject: Re: [PSES] FW: [PSES] EU sets EMC limits for London Olympics I've watched BBC News rebroadcast in the US. One thing BBC absolutely is not is politically unbiased. Peter Tarver From: Michael Derby [mailto:micha...@acbcert.com] Sent: Thursday, August 09, 2012 00:45 To: EMC-PSTC@LISTSERV.IEEE.ORG Subject: Re: [PSES] FW: [PSES] EU sets EMC limits for London Olympics Hello, I am enjoying this conversation. It's worth pointing out to the non-BBC watchers that there are no commercials/adverts on the BBC. They get their money through the license fee. So, basically, we are paying for the privilege/opportunity to watch television without any commercials or advert breaks. It's nice for films, where there isn't an interruption every 20 minutes (unless you need the toilet, of course). We also have the opportunity to complain about BBC services, since we're paying for them. It also helps keep them politically neutral, since they don't have sponsors to worry about. Michael. Michael Derby Regulatory Engineer ACB Europe This email message is for the sole use of the intended recipient(s) and may contain confidential and/or privileged information. If you are not an intended recipient, you may not review, use, copy, disclose or distribute this message. If you received this message in error, please contact the sender by reply email and destroy all copies of the original message. - This message is from the IEEE Product Safety Engineering Society emc-pstc discussion list. To post a message to the list, send your e-mail to emc-p...@ieee.org All emc-pstc postings are archived and searchable on the web at: http://www.ieee-pses.org/emc-pstc.html Attachments are not permitted but the IEEE PSES Online Communities site at http://product-compliance.oc.ieee.org/ can be used for graphics (in well-used formats), large files, etc. Website: http://www.ieee-pses.org/ Instructions: http://listserv.ieee.org/request/user-guide.html List rules: http://www.ieee-pses.org/listrules.html For help, send mail to the list administrators: Scott Douglas emcp...@radiusnorth.net Mike Cantwell mcantw...@ieee.org For policy questions, send mail to: Jim Bacher j.bac...@ieee.org David Heald dhe...@gmail.com - This message is from the IEEE Product Safety Engineering Society emc-pstc discussion list. To post a message to the list, send your e-mail to emc-p...@ieee.org All emc-pstc postings are archived and searchable on the web at: http://www.ieee-pses.org/emc-pstc.html Attachments are not permitted but the IEEE PSES Online Communities site at http://product-compliance.oc.ieee.org/ can be used for graphics (in well-used formats), large files, etc. Website: http://www.ieee-pses.org/ Instructions: http://listserv.ieee.org/request/user-guide.html List rules: http://www.ieee-pses.org/listrules.html For help, send mail to the list administrators: Scott Douglas emcp...@radiusnorth.net Mike Cantwell mcantw...@ieee.org For policy questions, send mail to: Jim Bacher: j.bac...@ieee.org David Heald: dhe...@gmail.com
Re: [PSES] EU sets EMC limits for London Olympics
In message 1344567692.76702.yahoomail...@web160403.mail.bf1.yahoo.com, dated Thu, 9 Aug 2012, Bill Owsley wdows...@yahoo.com writes: Like the flicker standard 61000-3-3, subjective flickering of incandescent lights - that have been banned in the EU. It's only the limits that are based on subjective effects on a 60 W filament lamp. Other types of lamp also flicker - some more, some less. But there is work going on to select a new reference. And the voltage changes that cause the flicker can affect other equipment as well as lamps. How long do the legacy products last?? The books of records include reports of lamps with tens of years of life. -- OOO - Own Opinions Only. Try www.jmwa.demon.co.uk and www.isce.org.uk Instead of saying that the government is doing too little, too late or too much, too early, say they've got is exactly right, thus throwing them into total confusion. John Woodgate, J M Woodgate and Associates, Rayleigh, Essex UK - This message is from the IEEE Product Safety Engineering Society emc-pstc discussion list. To post a message to the list, send your e-mail to emc-p...@ieee.org All emc-pstc postings are archived and searchable on the web at: http://www.ieee-pses.org/emc-pstc.html Attachments are not permitted but the IEEE PSES Online Communities site at http://product-compliance.oc.ieee.org/ can be used for graphics (in well-used formats), large files, etc. Website: http://www.ieee-pses.org/ Instructions: http://listserv.ieee.org/request/user-guide.html List rules: http://www.ieee-pses.org/listrules.html For help, send mail to the list administrators: Scott Douglas emcp...@radiusnorth.net Mike Cantwell mcantw...@ieee.org For policy questions, send mail to: Jim Bacher: j.bac...@ieee.org David Heald: dhe...@gmail.com
Re: [PSES] FW: [PSES] EU sets EMC limits for London Olympics
In message 39dca1f7df4bfc9441453cbb1e27e...@mail.gmail.com, dated Thu, 9 Aug 2012, Peter Tarver ptar...@enphaseenergy.com writes: I’ve watched BBC News rebroadcast in the US. One thing BBC absolutely is not is politically unbiased. Everyone in Britain agrees with you. Labour supporters say it has a Tory bias and Tory supporters (;-) -- OOO - Own Opinions Only. Try www.jmwa.demon.co.uk and www.isce.org.uk Instead of saying that the government is doing too little, too late or too much, too early, say they've got is exactly right, thus throwing them into total confusion. John Woodgate, J M Woodgate and Associates, Rayleigh, Essex UK - This message is from the IEEE Product Safety Engineering Society emc-pstc discussion list. To post a message to the list, send your e-mail to emc-p...@ieee.org All emc-pstc postings are archived and searchable on the web at: http://www.ieee-pses.org/emc-pstc.html Attachments are not permitted but the IEEE PSES Online Communities site at http://product-compliance.oc.ieee.org/ can be used for graphics (in well-used formats), large files, etc. Website: http://www.ieee-pses.org/ Instructions: http://listserv.ieee.org/request/user-guide.html List rules: http://www.ieee-pses.org/listrules.html For help, send mail to the list administrators: Scott Douglas emcp...@radiusnorth.net Mike Cantwell mcantw...@ieee.org For policy questions, send mail to: Jim Bacher: j.bac...@ieee.org David Heald: dhe...@gmail.com
Re: [PSES] France no longer having restriction on WIFI ?
Hello Jasmine, The most official and ‘legal’ document is this one. http://eur-lex.europa.eu/LexUriServ/LexUriServ.do?uri=OJ:L:2009:289:0019:002 0:EN:PDF It was written in 2009 and shows that the French restriction expires from 1st July 2012. As additional guidance, the European Commission post this page on ‘Class 1’ devices. http://ec.europa.eu/enterprise/sectors/rtte/files/rtte_subclass_july2012_en. pdf You can see sub-class 22 is for WLAN devices. In June, it said “2400-2454 MHz” Now, from July, it says “2400-2483.5 MHz” I hope this helps, Michael. Michael Derby Regulatory Engineer ACB Europe From: jasmine tan [mailto:jastan...@hotmail.com] Sent: 10 August 2012 09:03 To: EMC-PSTC@LISTSERV.IEEE.ORG Subject: [PSES] France no longer having restriction on WIFI ? Importance: High Dear Folks, I had heard that as of July 1, 2012, France removed the 100 mW indoor use requirement . Thus the Alert Symbol (!),is no longer required. Does any one has the officail documents to verify this rumour. Please share with me, Thanks in advance. Best Regards, jasmine - This message is from the IEEE Product Safety Engineering Society emc-pstc discussion list. To post a message to the list, send your e-mail to emc-p...@ieee.org All emc-pstc postings are archived and searchable on the web at: http://www.ieee-pses.org/emc-pstc.html Attachments are not permitted but the IEEE PSES Online Communities site at http://product-compliance.oc.ieee.org/ can be used for graphics (in well-used formats), large files, etc. Website: http://www.ieee-pses.org/ Instructions: http://listserv.ieee.org/request/user-guide.html List rules: http://www.ieee-pses.org/listrules.html For help, send mail to the list administrators: Scott Douglas emcp...@radiusnorth.net Mike Cantwell mcantw...@ieee.org For policy questions, send mail to: Jim Bacher j.bac...@ieee.org David Heald dhe...@gmail.com - This message is from the IEEE Product Safety Engineering Society emc-pstc discussion list. To post a message to the list, send your e-mail to emc-p...@ieee.org All emc-pstc postings are archived and searchable on the web at: http://www.ieee-pses.org/emc-pstc.html Attachments are not permitted but the IEEE PSES Online Communities site at http://product-compliance.oc.ieee.org/ can be used for graphics (in well-used formats), large files, etc. Website: http://www.ieee-pses.org/ Instructions: http://listserv.ieee.org/request/user-guide.html List rules: http://www.ieee-pses.org/listrules.html For help, send mail to the list administrators: Scott Douglas emcp...@radiusnorth.net Mike Cantwell mcantw...@ieee.org For policy questions, send mail to: Jim Bacher: j.bac...@ieee.org David Heald: dhe...@gmail.com
[PSES] FW: [PSES] EU sets EMC limits for London Olympics
From: Andrew McCallum Sent: 09 August 2012 09:12 To: EMC-PSTC@LISTSERV.IEEE.ORG Subject: [PSES] EU sets EMC limits for London Olympics For a very small Licence fee the BBC provide TV, Radio and internet services which dominate the market. Compared to the costs of Sky and Virgin media its easily in reach of anyone who can afford a TV/computer. You only need one licence per household - so you can have as many TV's as you like. Sky and Virgin both charge extra for set top boxes in additional rooms. The BBC is a leading innovator in the industry with HD and the iPlayer being two recent successful additions. Many of their programs are regularly top of the viewing lists (ok many of them are SOAPS/gameshows but it keeps the masses happy). Their science and nature programmes are the best around and they also put on many cultural events that would not be available otherwise - Last Night of the Proms etc etc. The problem I see with the BBC is that its so dominate that independent TV and news services struggle to come up with financial models that will work. With advertising revenue being squeezed the only option is to charge and people have to choose to pay. Sky and Virgin are slowly making inroads but it costs. That's my 2p worth Andy Confidentiality: This e-mail and its attachments are intended for the addressees only (or people authorised to receive them on their behalf) and may be confidential or privileged. If they have come to you in error you must take no action based on them, nor must you copy or show them to anyone; please delete them from your system and reply to this e mail highlighting the error. Security: Please note that this e-mail has been created in the knowledge that internet e-mail is not 100% secure. Anyone who communicates with us by e-mail is taken to accept this. Viruses: We have taken steps to ensure that this e-mail and attachments are virus free, but we advise that in keeping with good computing practice you should ensure that they are actually virus free. DeltaRail Group Limited registered office Hudson House, 2 Hudson Way, Pride Park, Derby, DE24 8HS. Registered in England and Wales, number 5839985. Please refer to www.deltarail.com - This message is from the IEEE Product Safety Engineering Society emc-pstc discussion list. To post a message to the list, send your e-mail to emc-p...@ieee.org All emc-pstc postings are archived and searchable on the web at: http://www.ieee-pses.org/emc-pstc.html Attachments are not permitted but the IEEE PSES Online Communities site at http://product-compliance.oc.ieee.org/ can be used for graphics (in well-used formats), large files, etc. Website: http://www.ieee-pses.org/ Instructions: http://listserv.ieee.org/request/user-guide.html List rules: http://www.ieee-pses.org/listrules.html For help, send mail to the list administrators: Scott Douglas emcp...@radiusnorth.net Mike Cantwell mcantw...@ieee.org For policy questions, send mail to: Jim Bacher: j.bac...@ieee.org David Heald: dhe...@gmail.com
Re: [PSES] MIL STD 461E NECESSARY BANDWIDTH
Ralph: I used the ancient HP-85869PC data acquisition software, and HP (being conservative) used a 1 Hz RBW for implementing an Average detector. They did this to extend the HP-8566B’s capabilities to commercial EMI testing. (For Quasi Peak, they needed an external filter and detector box that was inserted in the 8566B’s IF chain.) However, the 461 detector is always supposed to be a Peak detector. (Except for CS101, where the limit is expressed in terms of Vrms. OTOH, almost everyone uses an oscilloscope to monitor this level, so…) Ed Price El Cajon, CA USA From: ralph.mcdiar...@schneider-electric.com [mailto:ralph.mcdiar...@schneider-electric.com] Sent: Thursday, August 09, 2012 1:52 PM To: edpr...@cox.net Subject: Re: [PSES] MIL STD 461E NECESSARY BANDWIDTH Hi Ed, I would have thought so too, unless 461 has an AVG limit line, in which case I'd use an average detector for both. BTW, we've found that a VBW of 10Hz does a reasonable job of emulating the response of an average detector defined in CISPR 16. ___ Ralph McDiarmid | Schneider Electric | Solar Business | CANADA | Regulatory Compliance Engineering Phone: +1-604-422-2622 | e-mail: mailto:ralph.mcdiar...@schneider-electric.com ralph.mcdiar...@schneider-electric.com | Site: http://www.schneider-electric.com/ www.schneider-electric.com | Address: 3700 Gilmore Way, Burnaby, BC, V5G4M1 From: Ed Price edpr...@cox.net To: EMC-PSTC@LISTSERV.IEEE.ORG Date: 08/09/2012 12:40 PM Subject: Re: [PSES] MIL STD 461E NECESSARY BANDWIDTH _ Charlie: The USA DoD procurement system uses a detailed contract to legally bind a vendor to a number of conditions, and in the EMC area, the successful performance of MIL-STD-461F is typical. The contract will call out which specific Test Methods (including variations) are applicable, so if CE106 is in the contract, believe me, it is mandatory. True, the early 461 was just taking an educated whack at controlling intentional emissions to nothing more than was reasonable and economical to achieve. There was little justification to why 5% was better than 7%, other than the ancient relationship to half the number of allocated fingers. (BTW, can you imagine a world in which 7 fingers or toes per hand or foot gave rise to a base 14 numerical system?) Lastly, why would you use a different RBW to measure the fundamental versus the spurious emissions? I would think that the only way to accurately measure the peak of a spurious was the same way that you measured the peak of the fundamental. Ed Price El Cajon, CA USA From: Charlie Blackham [ mailto:char...@sulisconsultants.com mailto:char...@sulisconsultants.com] Sent: Thursday, August 09, 2012 1:26 AM To: EMC-PSTC@LISTSERV.IEEE.ORG Subject: Re: [PSES] MIL STD 461E NECESSARY BANDWIDTH ETSI standards typically define “Spurious Emissions” as being those removed from cF by 250% of the necessary bandwidth. Emissions within this region are typically covered by Spectral Mask and Occupied Bandwidth requirements, both of which are typically measured using much lower RBWs than used for Spurious Emissions so that accurate measurements can be obtained. I’m might be talking out of my hat now, but when MIL-STD-461 was first written way back when, I’m sure that they were really only thinking in terms of AM/FM modulation - 40 MHz wide OFDM and 1GHz wide FMCW devices weren’t probably envisaged. Since, in my experience, CE106 isn’t actually Mandatory for selling a product, I would do the test in a way that seems reasonable for the operation of your product, document what you’ve done and why, and discuss/explain to customers as required. You might want to have a look at CEPT/ERC/REC 74-01 and associated documents Regards Charlie From: Mazzola, Santo (US SSA) mailto:[mailto:santo.mazz...@baesystems.com] [mailto:santo.mazz...@baesystems.com] Sent: 07 August 2012 00:21 To: mailto:EMC-PSTC@LISTSERV.IEEE.ORG EMC-PSTC@LISTSERV.IEEE.ORG Subject: Re: [PSES] MIL STD 461E NECESSARY BANDWIDTH Airy, In MIL-STD-461F they changed the language of the exception, It now reads: The transmit mode portion of this requirement is not applicable within the bandwidth of the EUT transmitted signal or within ±5 percent of the fundamental frequency, whichever is larger. So if the necessary bandwidth is greater then +/- 5% it is still excluded. Speaking in generalities, the necessary bandwidth of whatever kind of transmitter it is, probably has some kind of Spectral mask requirement that is not a MIL-STD-461 requirement. The spurious emissions requirements of CE106 cannot begin until after the necessary bandwidth ends. Hope that helps. Sandy (Santo) Mazzola EMC Engineer BAE Systems Inc From: mailto:emc-p...@ieee.org
Re: [PSES] FW: [PSES] EU sets EMC limits for London Olympics
Michael: The BBC's sponsor is the UK government, so I suppose they still have somebody looking over their shoulder. Ed Price El Cajon, CA USA From: Peter Tarver [mailto:ptar...@enphaseenergy.com] Sent: Thursday, August 09, 2012 3:29 PM To: EMC-PSTC@LISTSERV.IEEE.ORG Subject: Re: [PSES] FW: [PSES] EU sets EMC limits for London Olympics I've watched BBC News rebroadcast in the US. One thing BBC absolutely is not is politically unbiased. Peter Tarver From: Michael Derby [mailto:micha...@acbcert.com] Sent: Thursday, August 09, 2012 00:45 To: EMC-PSTC@LISTSERV.IEEE.ORG Subject: Re: [PSES] FW: [PSES] EU sets EMC limits for London Olympics Hello, We also have the opportunity to complain about BBC services, since we're paying for them. It also helps keep them politically neutral, since they don't have sponsors to worry about. Michael. Michael Derby Regulatory Engineer ACB Europe - This message is from the IEEE Product Safety Engineering Society emc-pstc discussion list. To post a message to the list, send your e-mail to emc-p...@ieee.org All emc-pstc postings are archived and searchable on the web at: http://www.ieee-pses.org/emc-pstc.html Attachments are not permitted but the IEEE PSES Online Communities site at http://product-compliance.oc.ieee.org/ can be used for graphics (in well-used formats), large files, etc. Website: http://www.ieee-pses.org/ Instructions: http://listserv.ieee.org/request/user-guide.html List rules: http://www.ieee-pses.org/listrules.html For help, send mail to the list administrators: Scott Douglas emcp...@radiusnorth.net Mike Cantwell mcantw...@ieee.org For policy questions, send mail to: Jim Bacher: j.bac...@ieee.org David Heald: dhe...@gmail.com
Re: [PSES] FW: [PSES] EU sets EMC limits for London Olympics
Thanks Ed, I was thinking back to my days of living in the USA. Maybe I should have said relatively neutral.J Michael Derby Regulatory Engineer ACB Europe From: Ed Price [mailto:edpr...@cox.net] Sent: 10 August 2012 13:57 To: EMC-PSTC@LISTSERV.IEEE.ORG Subject: Re: [PSES] FW: [PSES] EU sets EMC limits for London Olympics Michael: The BBC's sponsor is the UK government, so I suppose they still have somebody looking over their shoulder. Ed Price El Cajon, CA USA From: Peter Tarver [mailto:ptar...@enphaseenergy.com] Sent: Thursday, August 09, 2012 3:29 PM To: EMC-PSTC@LISTSERV.IEEE.ORG Subject: Re: [PSES] FW: [PSES] EU sets EMC limits for London Olympics I've watched BBC News rebroadcast in the US. One thing BBC absolutely is not is politically unbiased. Peter Tarver From: Michael Derby [mailto:micha...@acbcert.com] Sent: Thursday, August 09, 2012 00:45 To: EMC-PSTC@LISTSERV.IEEE.ORG Subject: Re: [PSES] FW: [PSES] EU sets EMC limits for London Olympics Hello, We also have the opportunity to complain about BBC services, since we're paying for them. It also helps keep them politically neutral, since they don't have sponsors to worry about. Michael. Michael Derby Regulatory Engineer ACB Europe - This message is from the IEEE Product Safety Engineering Society emc-pstc discussion list. To post a message to the list, send your e-mail to emc-p...@ieee.org All emc-pstc postings are archived and searchable on the web at: http://www.ieee-pses.org/emc-pstc.html Attachments are not permitted but the IEEE PSES Online Communities site at http://product-compliance.oc.ieee.org/ can be used for graphics (in well-used formats), large files, etc. Website: http://www.ieee-pses.org/ Instructions: http://listserv.ieee.org/request/user-guide.html List rules: http://www.ieee-pses.org/listrules.html For help, send mail to the list administrators: Scott Douglas emcp...@radiusnorth.net Mike Cantwell mcantw...@ieee.org For policy questions, send mail to: Jim Bacher j.bac...@ieee.org David Heald dhe...@gmail.com - This message is from the IEEE Product Safety Engineering Society emc-pstc discussion list. To post a message to the list, send your e-mail to emc-p...@ieee.org All emc-pstc postings are archived and searchable on the web at: http://www.ieee-pses.org/emc-pstc.html Attachments are not permitted but the IEEE PSES Online Communities site at http://product-compliance.oc.ieee.org/ can be used for graphics (in well-used formats), large files, etc. Website: http://www.ieee-pses.org/ Instructions: http://listserv.ieee.org/request/user-guide.html List rules: http://www.ieee-pses.org/listrules.html For help, send mail to the list administrators: Scott Douglas emcp...@radiusnorth.net Mike Cantwell mcantw...@ieee.org For policy questions, send mail to: Jim Bacher: j.bac...@ieee.org David Heald: dhe...@gmail.com
[PSES] Ophir Amplifier 5127F for Rent?
Hello Does anyone out there [if any equipment reps on list] have an OPHIR 5127F amplifier for 12 month lease or rental? We used a similar one for years and suited our immunity test setup very well. Calibration fields were easily repeated prior to testing. Very stable amp. The one we have now seems to have some sort of instability - the field strength in our chamber varies 3-5 V/m [in a 60 V/m range...] even setting the system for a single frequency and constant power. Would like to see if we could find one that we know is suitable while we investigate the variance. Best regards, Mac Elliott [] General Public - This message is from the IEEE Product Safety Engineering Society emc-pstc discussion list. To post a message to the list, send your e-mail to emc-p...@ieee.org All emc-pstc postings are archived and searchable on the web at: http://www.ieee-pses.org/emc-pstc.html Attachments are not permitted but the IEEE PSES Online Communities site at http://product-compliance.oc.ieee.org/ can be used for graphics (in well-used formats), large files, etc. Website: http://www.ieee-pses.org/ Instructions: http://listserv.ieee.org/request/user-guide.html List rules: http://www.ieee-pses.org/listrules.html For help, send mail to the list administrators: Scott Douglas emcp...@radiusnorth.net Mike Cantwell mcantw...@ieee.org For policy questions, send mail to: Jim Bacher: j.bac...@ieee.org David Heald: dhe...@gmail.com
Re: [PSES] Ophir Amplifier 5127F for Rent?
In message c3e2eb4dcd575846a467e2b9d2bc36152aea4...@by2prd0410mb365.namprd04.prod.o utlook.com, dated Fri, 10 Aug 2012, Elliott Mac-FME001 fme...@motorolasolutions.com writes: The one we have now seems to have some sort of instability ? the field strength in our chamber varies 3-5 V/m [in a 60 V/m range] even setting the system for a single frequency and constant power. Change the cables and clean all (that means ALL) the connectors. May not work, but if it does -- OOO - Own Opinions Only. Try www.jmwa.demon.co.uk and www.isce.org.uk Instead of saying that the government is doing too little, too late or too much, too early, say they've got is exactly right, thus throwing them into total confusion. John Woodgate, J M Woodgate and Associates, Rayleigh, Essex UK - This message is from the IEEE Product Safety Engineering Society emc-pstc discussion list. To post a message to the list, send your e-mail to emc-p...@ieee.org All emc-pstc postings are archived and searchable on the web at: http://www.ieee-pses.org/emc-pstc.html Attachments are not permitted but the IEEE PSES Online Communities site at http://product-compliance.oc.ieee.org/ can be used for graphics (in well-used formats), large files, etc. Website: http://www.ieee-pses.org/ Instructions: http://listserv.ieee.org/request/user-guide.html List rules: http://www.ieee-pses.org/listrules.html For help, send mail to the list administrators: Scott Douglas emcp...@radiusnorth.net Mike Cantwell mcantw...@ieee.org For policy questions, send mail to: Jim Bacher: j.bac...@ieee.org David Heald: dhe...@gmail.com
Re: [PSES] Ophir Amplifier 5127F for Rent?
I'm betting on a broken connectorlook at each connector with a magnifier! Michael Sundstrom OHD TREQ Dallas Electronic Lab Analyst EMC Lead (214) 579 6312 office (940) 390 3644 cell KB5UKT -Original Message- From: John Woodgate [mailto:j...@jmwa.demon.co.uk] Sent: Friday, August 10, 2012 11:57 AM To: EMC-PSTC@LISTSERV.IEEE.ORG Subject: Re: [PSES] Ophir Amplifier 5127F for Rent? In message c3e2eb4dcd575846a467e2b9d2bc36152aea4...@by2prd0410mb365.namprd04.prod.o utlook.com, dated Fri, 10 Aug 2012, Elliott Mac-FME001 fme...@motorolasolutions.com writes: The one we have now seems to have some sort of instability ? the field strength in our chamber varies 3-5 V/m [in a 60 V/m range] even setting the system for a single frequency and constant power. Change the cables and clean all (that means ALL) the connectors. May not work, but if it does -- OOO - Own Opinions Only. Try www.jmwa.demon.co.uk and www.isce.org.uk Instead of saying that the government is doing too little, too late or too much, too early, say they've got is exactly right, thus throwing them into total confusion. John Woodgate, J M Woodgate and Associates, Rayleigh, Essex UK - This message is from the IEEE Product Safety Engineering Society emc-pstc discussion list. To post a message to the list, send your e-mail to emc-p...@ieee.org All emc-pstc postings are archived and searchable on the web at: http://www.ieee-pses.org/emc-pstc.html Attachments are not permitted but the IEEE PSES Online Communities site at http://product-compliance.oc.ieee.org/ can be used for graphics (in well-used formats), large files, etc. Website: http://www.ieee-pses.org/ Instructions: http://listserv.ieee.org/request/user-guide.html List rules: http://www.ieee-pses.org/listrules.html For help, send mail to the list administrators: Scott Douglas emcp...@radiusnorth.net Mike Cantwell mcantw...@ieee.org For policy questions, send mail to: Jim Bacher: j.bac...@ieee.org David Heald: dhe...@gmail.com - This message is from the IEEE Product Safety Engineering Society emc-pstc discussion list. To post a message to the list, send your e-mail to emc-p...@ieee.org All emc-pstc postings are archived and searchable on the web at: http://www.ieee-pses.org/emc-pstc.html Attachments are not permitted but the IEEE PSES Online Communities site at http://product-compliance.oc.ieee.org/ can be used for graphics (in well-used formats), large files, etc. Website: http://www.ieee-pses.org/ Instructions: http://listserv.ieee.org/request/user-guide.html List rules: http://www.ieee-pses.org/listrules.html For help, send mail to the list administrators: Scott Douglas emcp...@radiusnorth.net Mike Cantwell mcantw...@ieee.org For policy questions, send mail to: Jim Bacher: j.bac...@ieee.org David Heald: dhe...@gmail.com
Re: [PSES] Ophir Amplifier 5127F for Rent?
I have an Amplifier Research 25A100 amplifier that developed a gain stability problem after 20+ years of use and several over-power incidents caused by several individuals including myself. Turns out that the carbon composition resistors used in the drain-to-gate feedback of the output stage had gotten tired of all the abuse. I replaced them with more stable metal oxide resistors and the problem went away. Don Borowski EMC Compliance Engineer Schweitzer Engineering Labs Pullman, Washington, USA From: Sundstrom, Michael michael_sundst...@overheaddoor.com To: John Woodgate j...@jmwa.demon.co.uk, EMC-PSTC@LISTSERV.IEEE.ORG EMC-PSTC@LISTSERV.IEEE.ORG Date: 08/10/2012 10:14 AM Subject:RE: [PSES] Ophir Amplifier 5127F for Rent? Sent by:emc-p...@ieee.org I'm betting on a broken connectorlook at each connector with a magnifier! Michael Sundstrom OHD TREQ Dallas Electronic Lab Analyst EMC Lead (214) 579 6312 office (940) 390 3644 cell KB5UKT -Original Message- From: John Woodgate [mailto:j...@jmwa.demon.co.uk] Sent: Friday, August 10, 2012 11:57 AM To: EMC-PSTC@LISTSERV.IEEE.ORG Subject: Re: [PSES] Ophir Amplifier 5127F for Rent? In message c3e2eb4dcd575846a467e2b9d2bc36152aea4...@by2prd0410mb365.namprd04.prod.o utlook.com, dated Fri, 10 Aug 2012, Elliott Mac-FME001 fme...@motorolasolutions.com writes: The one we have now seems to have some sort of instability ? the field strength in our chamber varies 3-5 V/m [in a 60 V/m range] even setting the system for a single frequency and constant power. Change the cables and clean all (that means ALL) the connectors. May not work, but if it does -- OOO - Own Opinions Only. Try www.jmwa.demon.co.uk and www.isce.org.uk Instead of saying that the government is doing too little, too late or too much, too early, say they've got is exactly right, thus throwing them into total confusion. John Woodgate, J M Woodgate and Associates, Rayleigh, Essex UK - This message is from the IEEE Product Safety Engineering Society emc-pstc discussion list. To post a message to the list, send your e-mail to emc-p...@ieee.org All emc-pstc postings are archived and searchable on the web at: http://www.ieee-pses.org/emc-pstc.html Attachments are not permitted but the IEEE PSES Online Communities site at http://product-compliance.oc.ieee.org/ can be used for graphics (in well-used formats), large files, etc. Website: http://www.ieee-pses.org/ Instructions: http://listserv.ieee.org/request/user-guide.html List rules: http://www.ieee-pses.org/listrules.html For help, send mail to the list administrators: Scott Douglas emcp...@radiusnorth.net Mike Cantwell mcantw...@ieee.org For policy questions, send mail to: Jim Bacher: j.bac...@ieee.org David Heald: dhe...@gmail.com
Re: [PSES] France no longer having restriction on WIFI ?
It's hard to imagine needing more that 100mW at that frequency for short range (say 30m) ___ Ralph McDiarmid | Schneider Electric | Solar Business | CANADA | Regulatory Compliance Engineering From: jasmine tan jastan...@hotmail.com To: EMC-PSTC@LISTSERV.IEEE.ORG Date: 08/10/2012 01:04 AM Subject: [PSES] France no longer having restriction on WIFI ? Dear Folks, I had heard that as of July 1, 2012, France removed the 100 mW indoor use requirement . Thus the Alert Symbol (!),is no longer required. Does any one has the officail documents to verify this rumour. Please share with me, Thanks in advance. Best Regards, jasmine __ This email has been scanned by the Symantec Email Security.cloud service. __ - This message is from the IEEE Product Safety Engineering Society emc-pstc discussion list. To post a message to the list, send your e-mail to emc-p...@ieee.org All emc-pstc postings are archived and searchable on the web at: http://www.ieee-pses.org/emc-pstc.html Attachments are not permitted but the IEEE PSES Online Communities site at http://product-compliance.oc.ieee.org/ can be used for graphics (in well-used formats), large files, etc. Website: http://www.ieee-pses.org/ Instructions: http://listserv.ieee.org/request/user-guide.html List rules: http://www.ieee-pses.org/listrules.html For help, send mail to the list administrators: Scott Douglas emcp...@radiusnorth.net Mike Cantwell mcantw...@ieee.org For policy questions, send mail to: Jim Bacher j.bac...@ieee.org David Heald dhe...@gmail.com - This message is from the IEEE Product Safety Engineering Society emc-pstc discussion list. To post a message to the list, send your e-mail to emc-p...@ieee.org All emc-pstc postings are archived and searchable on the web at: http://www.ieee-pses.org/emc-pstc.html Attachments are not permitted but the IEEE PSES Online Communities site at http://product-compliance.oc.ieee.org/ can be used for graphics (in well-used formats), large files, etc. Website: http://www.ieee-pses.org/ Instructions: http://listserv.ieee.org/request/user-guide.html List rules: http://www.ieee-pses.org/listrules.html For help, send mail to the list administrators: Scott Douglas emcp...@radiusnorth.net Mike Cantwell mcantw...@ieee.org For policy questions, send mail to: Jim Bacher: j.bac...@ieee.org David Heald: dhe...@gmail.com
[PSES] Novel transmission line equivalent circuit
Hi Everyone, This month my Technical Tidbit is written by Tim Maloney of Intel for publication on my site. He has devised a very good transmission line equivalent circuit than makes it easy to understand transmission line impedance behavior as a function of line length and termination impedance. Here are the details: Technical Tidbit - August 2012 Novel Equivalent Circuit for Zin of an Arbitrarily Terminated Transmission Line (Written by Timothy J. Maloney) Abstract: A new equivalent circuit for Zin of an arbitrarily terminated transmission line is presented, one which employs only lumped impedances and short and open line stubs in series‐parallel combination. The new picture readily illustrates concepts of line matching and impedance inversion at quarter‐wave frequencies, and also offers insights into transient and off‐resonance response. The link to my home page is: http://emcesd.com/ where the article is linked from the picture at the bottom of the page. The link to the article is: http://emcesd.com/tt2012/tt081012.htm If you want to try an interesting search, type in: high frequency measurements (with or without the s) Doug -- -- ___ _Doug Smith \ / ) P.O. Box 60941 = Boulder City, NV 89006-0941 _ / \ / \ _TEL/FAX: 702-570-6108/570-6013 / /\ \ ] / /\ \ Mobile: 408-858-4528 | q-( ) | o | Email: d...@dsmith.org \ _ /]\ _ / Web: http://www.dsmith.org -- - This message is from the IEEE Product Safety Engineering Society emc-pstc discussion list. To post a message to the list, send your e-mail to emc-p...@ieee.org All emc-pstc postings are archived and searchable on the web at: http://www.ieee-pses.org/emc-pstc.html Attachments are not permitted but the IEEE PSES Online Communities site at http://product-compliance.oc.ieee.org/ can be used for graphics (in well-used formats), large files, etc. Website: http://www.ieee-pses.org/ Instructions: http://listserv.ieee.org/request/user-guide.html List rules: http://www.ieee-pses.org/listrules.html For help, send mail to the list administrators: Scott Douglas emcp...@radiusnorth.net Mike Cantwell mcantw...@ieee.org For policy questions, send mail to: Jim Bacher: j.bac...@ieee.org David Heald: dhe...@gmail.com
