Hello Brian - It turns out that chambers used for emissions testing are not suitable for antenna/rx sensitivity type of measurements due to excessive reflections. OATS and chambers are considered suitable for EMC work if the chamber calibration is met with a +/- 4db spread for emissions and a 6db spread for immunity. I am told (and our experience backs this up) that this calibration range is just unacceptable for the types of measurements we are trying to perform.
Chas -----Original Message----- From: [email protected] [mailto:[email protected]] On Behalf Of Brian Oconnell Sent: Friday, July 12, 2013 4:09 PM To: [email protected] Subject: RE: Chambers for link budget testing Have no answer, but have questions because I am an EMC amateur, and thought that this could be done at any OATS or 10m chamber. Thought that link budget was done using parameters of free space loss and rx sensitivity and tx power. For this characterization, why is a speacil chamber required? Would this also done using other than line of site and changes in enviroment, antenna alignment, etc? Is this the same thing as 'fade margin'? Brian -----Original Message----- From: [email protected] [mailto:[email protected]]On Behalf Of Grasso, Charles Sent: Friday, July 12, 2013 2:28 PM To: [email protected] Subject: Chambers for link budget testing Hello all, I am looking for a chamber that would be suitable for testing link budgets (i.e. from one system to another) preferably here in Colorado. Does anyone know of such a chamber? - ---------------------------------------------------------------- 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://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.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://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]>
