As far as table A.1 of 61326 indicates, there are no reduction bands. (Table A.1 is for equipment intended for use in industrial locations.)
Other types of equimpment covered in EN61326 see a field strength reduction across the whole test band. -Jeff From: [email protected] [mailto:[email protected]] Sent: March 4, 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 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
