In message <[email protected]>, dated Fri, 11 Apr 2008, Heald David-JGTF76 <[email protected]> writes:
>Now to the topic of testing for HAC compliance on VoIP phones... I >know that the FCC has ruled that HAC is required, but I also know that >there is some issue with determining the actual test methods to >demonstrate compliance that is pushing enforcement out closer to 2009 >(maybe just for wireless devices though?). Unfortunately, I don't know >the exact status of this - if anyone cares to pitch in some more info >it would be quite welcome and could be of interest to the group. Well, what it SHOULD be is that the vertical component of the magnetic field has an r.m.s. value of 400 mA/m, measured with a time-constant of 125 ms, with a maximum amplitude input signal to the phone, at the position where the telecoil of a behind-the-ear hearing aid would be when the phone is in use. This is in accordance with IEC 60118-4 Second Edition. I believe that one 'specification' requires a field strength of no more than 100 mA/m and does not specify the direction or the position at which the field strength is measured. -- OOO - Own Opinions Only. Try www.jmwa.demon.co.uk and www.isce.org.uk Murphy's Law has now been officially re-named The Certainty Principle 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/ 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
