Ghery - Since we develop cellular products in our facility, there is a AT&T (Cingular) repeater in the hallway adjacent to our 3-m chamber. When the preamplifier was external to the chamber the cable screen transferred 900 MHz onto the graphical output (12-TT-position peak hold). The peaks were a nuisance because they exceeded the limit lines and distracted the EMI software away from real EUT peaks.
Problem was solved by installing the preamplifier and an RF switch (+12 V relay) inside the chamber. David Sterner From: emc-p...@ieee.org [mailto:emc-p...@ieee.org] On Behalf Of Pettit, Ghery Sent: Tuesday, December 09, 2008 10:55 AM To: Luke Turnbull; emc-p...@ieee.org Subject: RE: Mobile Phones in EMC Labs I would. Shielding of receivers isn't perfect. We have signs banning them in our labs. Don't know how well enforced it is. :-) Guess I'll have to check the next time I do a quality audit. :-) :-) Ghery Pettit ________________________________ From: emc-p...@ieee.org [mailto:emc-p...@ieee.org] On Behalf Of Luke Turnbull Sent: Tuesday, December 09, 2008 1:22 AM To: emc-p...@ieee.org Subject: Mobile Phones in EMC Labs Hi all, Should we ban the use of mobile phones in our test lab (i.e. outside our test chambers, but in the same EM environment as the sig gens, spectrum analysers, receivers etc.)? Opinions with reasons would be greatly appreciated. Thanks, Luke Turnbull Conekt is a trading division of TRW Limited Registered in England, No. 872948 Registered Office Address: Stratford Road, Solihull B90 4AX - This message is from the IEEE Product Safety Engineering Society emc-pstc discussion list. To post a message to the list, send your e-mail to <emc-p...@ieee.org> All emc-pstc postings are archived and searchable on the web at http://www.ieeecommunities.org/emc-pstc Graphics (in well-used formats), large files, etc. can be posted to that URL. Website: http://www.ieee-pses.org/ 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 <emcp...@ptcnh.net> Mike Cantwell <mcantw...@ieee.org> For policy questions, send mail to: Jim Bacher <j.bac...@ieee.org> David Heald <dhe...@gmail.com> - This message is from the IEEE Product Safety Engineering Society emc-pstc discussion list. To post a message to the list, send your e-mail to <emc-p...@ieee.org> All emc-pstc postings are archived and searchable on the web at http://www.ieeecommunities.org/emc-pstc Graphics (in well-used formats), large files, etc. can be posted to that URL. Website: http://www.ieee-pses.org/ 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 <emcp...@ptcnh.net> Mike Cantwell <mcantw...@ieee.org> For policy questions, send mail to: Jim Bacher <j.bac...@ieee.org> David Heald <dhe...@gmail.com> - This message is from the IEEE Product Safety Engineering Society emc-pstc discussion list. To post a message to the list, send your e-mail to <emc-p...@ieee.org> All emc-pstc postings are archived and searchable on the web at: http://www.ieeecommunities.org/emc-pstc Graphics (in well-used formats), large files, etc. can be posted to that URL. Website: http://www.ieee-pses.org/ 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 <emcp...@ptcnh.net> Mike Cantwell <mcantw...@ieee.org> For policy questions, send mail to: Jim Bacher: <j.bac...@ieee.org> David Heald: <dhe...@gmail.com>
