Daniel, The limits apply at any distance from the eut. If the exposure is too high, say at 1m, then either people must not be able to approach that close or screening or other mitigation must be applied. There is an issue with using antennas and probes close to the equipment, in that if the area of the probe is greater than the area covered by the field (at that distance) then the probe will measure a lower level than it should. All measuring devices must be "fully immersed" in the field to function correctly. There is no far-field / near-field consideration because in the near-field the "E" and "H" parameters are still valid although the measured Pd may be in error. I hope this helps. Regards Tim 6239 desk A1S77 P Please consider the environment before printing this email.
_____ From: [email protected] [mailto:[email protected]] On Behalf Of Daniel Liang Sent: 09 February 2007 08:06 To: [email protected] Subject: ICNIRP EMF exposure limit. *** WARNING *** This mail has originated outside your organization, either from an external partner or the Global Internet. Keep this in mind if you answer this message. Dear all experts, Does anyone know the tables in the ICNIPR specification about the limits of the general or occupational exposure ( E-field, H-field and power density ), they are referred to what distance away from the EUT? Thanks. Regards, Daniel. _____ Do You Yahoo!? 捇誥轎煤G蚘眊ㄜ笢弊菴珨橈拸嶼僵蚘璃玊閉湮蚘眊 <http://cn.mail.yahoo.com/?id=77071> - ---------------------------------------------------------------- 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 ______________________________________________________________________ This email has been scanned by the MessageLabs Email Security System. For more information please visit http://www.messagelabs.com/email ______________________________________________________________________ ******************************************************************** This email and any attachments are confidential to the intended recipient and may also be privileged. If you are not the intended recipient please delete it from your system and notify the sender. You should not copy it or use it for any purpose nor disclose or distribute its contents to any other person. ******************************************************************** - ---------------------------------------------------------------- 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
