Gordon: This is just conjecture, but I throw it out for others to comment on or shoot down.
The electric field strength from a quarter-wave vertical broadcast antenna (AM-MF) at 1000 meters is 300 mV/m for a 1000 watt transmitter. That would make it 3 V/m at 100 meters. Could the immunity levels have been influenced by the desire for operation to be uncompromised in the vicintiy of broadcast stations. Broadcasting was by far the most common source of RF in the everyday environment until about 10 or 20 years ago. It is still the most powerful. Regards, Jack Jacob Z. Schanker, P.E. 65 Crandon Way Rochester, NY 14618 Tel: 585 442 3909 Fax: 585 442 2182 [email protected] From: "Gordon,Ian" <[email protected]> To: "'IEEE EMC-PSTC GROUP'" <[email protected]> Sent: Thursday, October 14, 2004 3:30 AM Subject: Why 3 and 10V/m? > All > Does anyone know why 3 and 10V/m were chosen for radiated immunity testing? > Obviously these are merely the minima to be used, but there must have been > some logic behind the values? > If you have information on the logic behind the levels chosen for other > tests then that would also be appreciated. > > Ian Gordon > > *********************************************************************** > This email is confidential and intended solely for the use of the individual to whom it is addressed. Any views or opinions presented are solely those of the author and do not necessarily represent those of the BOC Group plc or any of its affiliates. If you are not the intended recipient, be advised that you have received this email in error and that any use, dissemination, forwarding, printing, or copying of this email is strictly prohibited. If you have received this email in error please return the message to the sender by replying to it and then delete the message from your computer. > > This footnote also confirms that this email message has been checked by anti-virus software for the presence of computer viruses. However, the BOC Group plc or any of its affiliates accepts no responsibility for any virus or defect that might arise from opening this e-mail or attachments. > > ---------------------------------------------------------------- > 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/listserv/request/user-guide.html > > List rules: http://www.ieee-pses.org/listrules.html > > For help, send mail to the list administrators: > > Ron Pickard: [email protected] > Scott Douglas [email protected] > > For policy questions, send mail to: > > Richard Nute: [email protected] > Jim Bacher: [email protected] > > All emc-pstc postings are archived and searchable on the web at: > > http://www.ieeecommunities.org/emc-pstc > > 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/listserv/request/user-guide.html List rules: http://www.ieee-pses.org/listrules.html For help, send mail to the list administrators: Ron Pickard: [email protected] Scott Douglas [email protected] For policy questions, send mail to: Richard Nute: [email protected] Jim Bacher: [email protected] All emc-pstc postings are archived and searchable on the web at: http://www.ieeecommunities.org/emc-pstc
