Just nominal power outputs and separation distances between interfering and susceptible equipment.
Output info given is - "The passive RFID system selected for this study (OBID, Feig Electronic, Weilburg, Germany) had an 868-MHz reader (2-4 W). The active RFID system (Eureka RFID, Avonwood, England) had a 125-kHz reader (68_10E-3 µT at 1m) that forces tags to transmit in its proximity. The active RFID tag had an operational frequency of 868 MHz at 2 µW" Interference effects were provoked at separation distances ranging from 5 - 600cm, depending upon equipment affected. Ged Dean Nottingham University Hospitals NHS Trust ____________________________________________________________ -----Original Message----- From: [email protected] [mailto:[email protected] <mailto:[email protected]> ] On Behalf Of John Woodgate Sent: 27 June 2008 17:28 To: [email protected] Subject: Re: EMC in the news: RFID & Medical In message <[email protected]>, dated Fri, 27 Jun 2008, "Dean Gerard (Medical Physics)" <[email protected]> writes: >Whilst I've seen the original article (Journal of the American Medical >Association), unfortunately I can't circulate it without breaking our >subscription license agreement. Thanks for the information you have given, anyway. The elephant in the room is the field strength information. Is there anything about that in the paper? -- OOO - Own Opinions Only. Try www.jmwa.demon.co.uk <file://www.jmwa.demon.co.uk> and www.isce.org.uk <file://www.isce.org.uk> Either we are causing global warming, in which case we may be able to stop it, or natural variation is causing it, and we probably can't stop it. You choose! John Woodgate, J M Woodgate and Associates, Rayleigh, Essex UK - ---------------------------------------------------------------- This message is from the IEEE Product Safety Engineering Society emc-pstc discussion list. Website: http://www.ieee-pses.org/ <http://www.ieee-pses.org/> To post a message to the list, send your e-mail to [email protected] Instructions: http://listserv.ieee.org/request/user-guide.html <http://listserv.ieee.org/request/user-guide.html> List rules: http://www.ieee-pses.org/listrules.html <http://www.ieee-pses.org/listrules.html> For help, send mail to the list administrators: Scott Douglas [email protected] Mike Cantwell [email protected] For policy questions, send mail to: Jim Bacher: [email protected] David Heald: [email protected] All emc-pstc postings are archived and searchable on the web at: http://www.ieeecommunities.org/emc-pstc <http://www.ieeecommunities.org/emc-pstc> ________________________________ The information contained in this email may be the subject of public disclosure under the Freedom of Information Act 2000 - unless legally exempt from disclosure, the confidentiality of this email and your reply cannot be guaranteed. Copyright of this email and any attachments created by us remains vested in the Nottingham University Hospitals NHS Trust. This email and any files transmitted with it are confidential and intended solely for the use of the individual or entity to whom they are addressed. This footnote also confirms that this email message has been swept by security software for the presence of known computer viruses. Nottingham University Hospitals NHS Trust City Hospital campus | Hucknall Road | Nottingham | NG5 1PB | Tel: 0115 969 1169 QMC campus | Derby Road | Nottingham | NG7 2UH | Tel: 0115 924 9924 If you have received this email in error please notify the sender. ________________________________ ID:QMCICT1 - B486518550000.000000000001.0001.mml - 17:41:57 06/27/08 - ---------------------------------------------------------------- This message is from the IEEE Product Safety Engineering Society emc-pstc discussion list. Website: http://www.ieee-pses.org/ To post a message to the list, send your e-mail to [email protected] 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 [email protected] Mike Cantwell [email protected] For policy questions, send mail to: Jim Bacher: [email protected] David Heald: [email protected] All emc-pstc postings are archived and searchable on the web at: http://www.ieeecommunities.org/emc-pstc
