Sorry but I would have to disagree with you on that. In the surveillance end, we find that if a device submitted for certification has been properly tested by qualified engineers under proper control, even on automated systems, the numbers can be reproduced within a reasonable expectations, whereas uncontrolled testing by inexperienced engineers using automated systems alone tend to produce a very wide difference in what is measured.
If you remember back to the days of yesteryear, some of the biggest problems were uncontrolled setups, uncontrolled testing procedures, uncontrolled engineering practice etc. What we seem to be reintroducing in the automated test systems is the uncontrolled factor once again. Turn the system on go get coffee and let it do whatever it does and come back to some set of numbers to which we have no idea if they are right wrong or within reasonable variations. Thanks Dennis Ward Director of Engineering American TCB Certification Resource for the Wireless Industry www.atcb.com 703-847-4700 fax 703-847-6888 direct - 703-880-4841 From: [email protected] [mailto:[email protected]] On Behalf Of John Woodgate Sent: Tuesday, December 09, 2008 11:58 AM To: [email protected] Subject: Re: Mobile Phones in EMC Labs In message <00b201c95a35$f528d430$df7a7c90$@com>, dated Tue, 9 Dec 2008, dward <[email protected]> writes: >Automation, without proper control, only gives a lot of paper with >meaningless unsubstantiated number. Doesn't matter, because most of the test methods are either artificial or unrepeatable, so even manual measurements give meaningless unsubstantiated numbers. Pardon my cynicism. The only justification for what we do is that it works in practice. -- OOO - Own Opinions Only. Try www.jmwa.demon.co.uk and www.isce.org.uk Either we are causing global warming, in which case we may be able to stop it, or natural variation is causing it, and we probably can't stop it. You choose! John Woodgate, J M Woodgate and Associates, Rayleigh, Essex UK - 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]>
