Buyer Beware – this prescan procedure is not in compliance with CISPR 16-2-3, we got a deficiency for having a similar prescan and subsequently modified our procedures in accordance with CISPR requirements.
Regarding the time domain scan, I have heard that automotive standards committees have evaluated it and accept it (at least for conducted emissions), but other standards committees either have not yet considered it or evaluations are still in process. Perhaps members of these committees can advise on the current status. Best Regards, Mike ________________________________ From: [email protected] [mailto:[email protected]] On Behalf Of Grace Lin Sent: Thursday, August 26, 2010 5:44 AM To: [email protected] Cc: [email protected] Subject: Re: R&S Time Domain Scan ESU Receiver I use TD of the R&S ESU to prescan and manually take 6 highest data points. For the frequency range of 30MHz-1GHz, I setup trace at maximum hold, antenna height at 1m and 2 m, rotate turntable 360 degrees for each antenna height. Most of the QP final data is within 1 dB of the prescan PK data. The prescan takes about 5 minutes (maybe less). For frequency above 1GHz, instead of 2m, I set antenna at 1.5m. On Wed, Aug 25, 2010 at 11:09 AM, <[email protected]> wrote: Hello Group, Does anyone have experience with using the Time Domain Scan (ScanFast) option on the Rohde & Schwarz ESU receiver? I have done some experiments and found that the results with a TD scan are very close to the results with a regular scan. The TD scan reduces the test time by quite a bit. Does anyone know if the TD scan would be acceptable for preview measurements during a qualification test? The preview measurement is what takes the most time. The only other option is to do an EMI sweep (in S/A mode) but the frequency and amplitude are inaccurate. An accurate preview measurement is necessary so that the proper points can be selected for maximization and final measurement. Thanks, Tim Pierce - 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]>
