Isn’t that the Modern/EMC version of Bad news, kill the messenger ?
The shielding of even older measurement receivers of a decent brand (guess which ones I think of) is enough to cut out a cellular even when very close. Of course once your gold-plated coaxial connectors wear out, and your cables became flat from standing on it, you will see all kind of spurious outdoor signals in your result. Seeing outdoor signals is just a sign that your measurement setup need review/fixing. For the preselector problem, get it fixed !!! I notice sometimes 10-15 dBuV of 900/950 MHz GSM signals getting trough when more then 4-5 cables protrude our rooms wall, and filtering is done “on the fly….”. Gert Gremmen Van: [email protected] [mailto:[email protected]] Namens Pettit, Ghery Verzonden: dinsdag 9 december 2008 16:55 Aan: Luke Turnbull; [email protected] Onderwerp: 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. J Guess I’ll have to check the next time I do a quality audit. J J Ghery Pettit ________________________________ From: [email protected] [mailto:[email protected]] On Behalf Of Luke Turnbull Sent: Tuesday, December 09, 2008 1:22 AM To: [email protected] 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 <[email protected]> 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 <[email protected]> Mike Cantwell <[email protected]> For policy questions, send mail to: Jim Bacher <[email protected]> David Heald <[email protected]> - 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 <[email protected]> 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 <[email protected]> Mike Cantwell <[email protected]> For policy questions, send mail to: Jim Bacher <[email protected]> David Heald <[email protected]> - 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 <[email protected]> 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 <[email protected]> Mike Cantwell <[email protected]> For policy questions, send mail to: Jim Bacher <[email protected]> David Heald <[email protected]>
