When you can see the Matrix, you can just tell when something isn't right. The Other Brian
-----Original Message----- From: Brian Oconnell [mailto:[email protected]] Sent: Tuesday, December 02, 2014 12:10 PM To: [email protected] Subject: Re: [PSES] EMC test lab errors This is art; it shall be framed. Brian From: Ed Price [mailto:[email protected]] Sent: Tuesday, December 02, 2014 5:02 AM To: [email protected] Subject: Re: [PSES] EMC test lab errors I'll dare to mention a few errors which I have seen first-hand; I would say that these are all in the "we don't know what we don't know" category. * Having an abiding faith that mixers can handle any power you push down a coax. * Thinking that coaxial directional couplers are as broadband as the coax. * Assuming that components must blow smoke before death. * That amplifiers only amplify. * That signal sources are clean. * Not realizing that coax cables are not water pipes, and that stacking several 3-way Tees at a junction will have no effect on impedance. * That anything performs as promised without cross-checking. * That what was good last week is still good. * That the little mistake you made earlier couldn't have any cascading effects. * That the software knows what it's doing. * That you know what the software is doing. * That you have all the variables under control. * That everyone wants to know the truth. Ed Price WB6WSN Chula Vista, CA USA - ---------------------------------------------------------------- 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.ieee-pses.org/emc-pstc.html Attachments are not permitted but the IEEE PSES Online Communities site at http://product-compliance.oc.ieee.org/ can be used for graphics (in well-used formats), large files, etc. Website: http://www.ieee-pses.org/ Instructions: http://www.ieee-pses.org/list.html (including how to unsubscribe) 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]> ________________________________ LECO Corporation Notice: This communication may contain confidential information intended for the named recipient(s) only. If you received this by mistake, please destroy it and notify us of the error. Thank you. - ---------------------------------------------------------------- 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.ieee-pses.org/emc-pstc.html Attachments are not permitted but the IEEE PSES Online Communities site at http://product-compliance.oc.ieee.org/ can be used for graphics (in well-used formats), large files, etc. Website: http://www.ieee-pses.org/ Instructions: http://www.ieee-pses.org/list.html (including how to unsubscribe) 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]>
