The advantage to a comb generator is the stability of the source in both frequency and amplitude, and its relatively high output compared to an unintentional radiator.
The disadvantage (for our purpose here) to commercial comb generator reference radiators is that they are so well defined, and at most frequencies approximate only a point source. However, I've put locally built ones inside test chassis' to evaluate shielding and it should be possible to add a comb generator to a real EUT with cables. Cortland Richmond KA5S > [Original Message] > From: <[email protected]> > To: <[email protected]> > Date: 11/25/2009 10:46:21 AM > Subject: Re: [PSES] 3-meter Chamber Site Comparison > > If you want to compare how two test sites view a given EUT (real equipment) > then of course you need and should use an EUT. But a given EUT will not > give you the full range of frequencies needed to give you a full comparison > of two sites unless of course the EUT is a reference radiator, comb > generator, etc. > > Bob Heller > 3M EMC Laboratory, 76-1-01 > St. Paul, MN 55107-1208 > Tel: 651- 778-6336 > Fax: 651-778-6252 > ============================================================================ === > > > > From: Derek Walton <[email protected]> > > To: Grace Lin <[email protected]> > > Cc: "Grasso, Charles" <[email protected]>, [email protected], > [email protected] > > Date: 11/24/2009 10:21 AM > > Subject: Re: [PSES] 3-meter Chamber Site Comparison > > Sent by: <[email protected]> > > > > > > > Hi Grace, > > I reaffirm my stance that you should test a real EUT. To start, one with > minimum cables, but a real EUT nonetheless. > > Sincerely, > > Derek. > - 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]>
