To answer the question regarding relaxation of test levels in EN 61326, there is no relaxation of the rf-immunity test levels for the ITU frequencies (or any frequency) as was the case with the generic standards.
Best Regards, Norm Provost > -----Original Message----- > From: [email protected] [SMTP:[email protected]] > Sent: Tuesday, March 04, 2003 7:53 AM > To: [email protected] > Subject: RE: RADIATED IMMUNITY REQUIREMENTS FOR EN61326 > > > > Has anyone answered the question of whether or not 61326 has provisions > for > a reduction in the field strength at those frequencies? > > Lisa > > > > > Mike Hopkins > > <michael.hopkins@therm To: "'Ken > Javor'" <[email protected]>, "Gordon,Ian" > o.com> > <[email protected]>, "'IEEE EMC-PSTC GROUP'" > <[email protected]> > Sent by: cc: > > owner-emc-pstc@majordo Subject: RE: RADIATED > IMMUNITY REQUIREMENTS FOR EN61326 > mo.ieee.org > > > > > > 03/03/2003 04:07 PM > > Please respond to Mike > > Hopkins > > > > > > > > > > > I believe the other bands are television broadcast.... > > M. Hopkins > Thermo KeyTek > > -----Original Message----- > From: Ken Javor [mailto:[email protected]] > Sent: Monday, March 03, 2003 11:03 AM > To: Gordon,Ian; 'IEEE EMC-PSTC GROUP' > Subject: Re: RADIATED IMMUNITY REQUIREMENTS FOR EN61326 > > > > Hazarding a guess. I am not near a spectrum usage chart, but clearly > 87-108 > is the FM broadcast band, and therefore no one else is transmitting at > these > frequencies, except at very low power. If the other bands listed are also > restricted to broadcasters of a certain power, and you can calculate that > the closest you might ever approach the source would limit you to a 3 V/m > exposure, then the relaxation would make sense. Like I said though, just > a > guess. > > > > > > on 3/3/03 8:01 AM, Gordon,Ian at [email protected] wrote: > > > > > Everybody > > Can you advise me as to whether the same reduction in field strength is > > available when applying the industrial immunity requirements of EN61326 > as > > when applying the generic industrial immunity standard EN61000-6-2. > > EN61000-6-2 permits a reduction in field strength from 10 to 3 V/m over > the > > following frequency ranges : > > 87 - 108 MHz > > 174 - 230 MHz > > 470 - 790 MHz > > > > Furthermore, I have never been able to work out why there is a > relaxation > at > > these freqs. The wording from table 1 of EN61000-6-2 is > ....10V/m........ > > "Except for the ITU broadcast frequency bands (given above) where the > level > > shall be 3V/m". > > Can anyone provide the "logic" behind this clause? (I'm sure there is > > some!). > > > > Thanks > > Ian Gordon > > > > _____________________________________________________________________ > > This e-mail has been scanned for viruses by the WorldCom Internet > Managed > > Scanning Service - powered by MessageLabs. For further information visit > > http://www.worldcom.com > > > > ------------------------------------------- > > This message is from the IEEE EMC Society Product Safety > > Technical Committee emc-pstc discussion list. > > > > Visit our web site at: http://www.ewh.ieee.org/soc/emcs/pstc/ > > > > To cancel your subscription, send mail to: > > [email protected] > > with the single line: > > unsubscribe emc-pstc > > > > For help, send mail to the list administrators: > > Ron Pickard: [email protected] > > Dave Heald: [email protected] > > > > For policy questions, send mail to: > > Richard Nute: [email protected] > > Jim Bacher: [email protected] > > > > Archive is being moved, we will announce when it is back on-line. > > All emc-pstc postings are archived and searchable on the web at: > > http://www.ieeecommunities.org/emc-pstc > > > > -- > > Ken Javor > EMC Compliance > Huntsville, Alabama > 256/650-5261 > > > > ------------------------------------------- > This message is from the IEEE EMC Society Product Safety > Technical Committee emc-pstc discussion list. > > Visit our web site at: http://www.ewh.ieee.org/soc/emcs/pstc/ > > To cancel your subscription, send mail to: > [email protected] > with the single line: > unsubscribe emc-pstc > > For help, send mail to the list administrators: > Ron Pickard: [email protected] > Dave Heald: [email protected] > > For policy questions, send mail to: > Richard Nute: [email protected] > Jim Bacher: [email protected] > > Archive is being moved, we will announce when it is back on-line. > All emc-pstc postings are archived and searchable on the web at: > http://www.ieeecommunities.org/emc-pstc > > ------------------------------------------- > This message is from the IEEE EMC Society Product Safety > Technical Committee emc-pstc discussion list. > > Visit our web site at: http://www.ewh.ieee.org/soc/emcs/pstc/ > > To cancel your subscription, send mail to: > [email protected] > with the single line: > unsubscribe emc-pstc > > For help, send mail to the list administrators: > Ron Pickard: [email protected] > Dave Heald: [email protected] > > For policy questions, send mail to: > Richard Nute: [email protected] > Jim Bacher: [email protected] > > Archive is being moved, we will announce when it is back on-line. > All emc-pstc postings are archived and searchable on the web at: > http://www.ieeecommunities.org/emc-pstc > > > > > > ------------------------------------------- > This message is from the IEEE EMC Society Product Safety > Technical Committee emc-pstc discussion list. > > Visit our web site at: http://www.ewh.ieee.org/soc/emcs/pstc/ > > To cancel your subscription, send mail to: > [email protected] > with the single line: > unsubscribe emc-pstc > > For help, send mail to the list administrators: > Ron Pickard: [email protected] > Dave Heald: [email protected] > > For policy questions, send mail to: > Richard Nute: [email protected] > Jim Bacher: [email protected] > > Archive is being moved, we will announce when it is back on-line. > All emc-pstc postings are archived and searchable on the web at: > http://www.ieeecommunities.org/emc-pstc This message is from the IEEE EMC Society Product Safety Technical Committee emc-pstc discussion list. Visit our web site at: http://www.ewh.ieee.org/soc/emcs/pstc/ To cancel your subscription, send mail to: [email protected] with the single line: unsubscribe emc-pstc For help, send mail to the list administrators: Ron Pickard: [email protected] Dave Heald: [email protected] For policy questions, send mail to: Richard Nute: [email protected] Jim Bacher: [email protected] Archive is being moved, we will announce when it is back on-line. All emc-pstc postings are archived and searchable on the web at: http://www.ieeecommunities.org/emc-pstc
