I choose tinned copper rather than diecast boxes as 55020 specifies dimensions for the boxes. I proved them using a network and spectrum analyser. Some of them complied with the spec of the standard "as built" others required tweaking. I remember the hardest one to get in spec was the coaxial cable CDN (S1?).
I actually quite enjoyed building them, it was nice to do some proper "RF work" for a change. Regards Chris Colgan From: John Woodgate [mailto:j...@jmwa.demon.co.uk] Sent: 30 September 2003 20:46 To: emc-p...@majordomo.ieee.org Subject: Re: EN 50083-2 I read in !emc-pstc that Colgan Christopher [Soundcraft UK] <Christopher .col...@soundcraft.com> wrote (in <8B639EA607AFD311901D00062938706307102 75D@SCFTUKX1>) about 'EN 50083-2' on Tue, 30 Sep 2003: > CDNs are not that difficult to make yourself. I made several types > using tinned copper sheet for the case - it is easy to cut, bend > and solder. The standard gives you the dimensions and component > values, just use normal RF techniques such as keeping lead lengths > to a minimum. Diecast boxes work well. The problem with using home-made CDNs for compliance testing (as opposed to pre-compliance) is proving that they do what the standard says they shall. -- Regards, John Woodgate, OOO - Own Opinions Only. http://www.jmwa.demon.co.uk Interested in professional sound reinforcement and distribution? Then go to http://www.isce.org.uk PLEASE do NOT copy news posts to me by E-MAIL! 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: majord...@ieee.org with the single line: unsubscribe emc-pstc For help, send mail to the list administrators: Ron Pickard: emc-p...@hypercom.com Dave Heald: emc_p...@symbol.com For policy questions, send mail to: Richard Nute: ri...@ieee.org Jim Bacher: j.bac...@ieee.org 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: majord...@ieee.org with the single line: unsubscribe emc-pstc For help, send mail to the list administrators: Ron Pickard: emc-p...@hypercom.com Dave Heald: emc_p...@symbol.com For policy questions, send mail to: Richard Nute: ri...@ieee.org Jim Bacher: j.bac...@ieee.org 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
