BEGIN:VCALENDAR VERSION:2.0 PRODID:IEEE vTools.Events//EN CALSCALE:GREGORIAN BEGIN:VTIMEZONE TZID:America/Chicago BEGIN:DAYLIGHT DTSTART:20270314T030000 TZOFFSETFROM:-0600 TZOFFSETTO:-0500 RRULE:FREQ=YEARLY;BYDAY=2SU;BYMONTH=3 TZNAME:CDT END:DAYLIGHT BEGIN:STANDARD DTSTART:20261101T010000 TZOFFSETFROM:-0500 TZOFFSETTO:-0600 RRULE:FREQ=YEARLY;BYDAY=1SU;BYMONTH=11 TZNAME:CST END:STANDARD END:VTIMEZONE BEGIN:VEVENT DTSTAMP:20261015T194423Z UID:4D2167FB-09F2-4B8F-928F-842E7531BFF8 DTSTART;TZID=America/Chicago:20261119T183100 DTEND;TZID=America/Chicago:20261119T203100 DESCRIPTION:The Chicago Chapter of IEEE EMC Society \, Invites you to our N ovember 19\, 2026 meeting.\n\nThe topic of understanding modern EMI Measur ement Equipment should be of interest to all EMC practitioners.\n\nAbstrac t: Traditionally\, EMI Measurements are performed by spectrum analyzers or EMI receivers. Using the FFT-based measurement systems for EMI testing ca n reduce test time\, improve the repeatability of EMI tests. While MIL461F defines the settings of dwell and sweep time for spectrum analyzers and E MI receivers\, MIL461F defines the first-time parameters and requirements for the FFT-based measurement systems.\n\nDuring the presentation the tech nological and mathematical background FFT-based measurement according to C ISPR 16-1-1/ANSI C63.2 and MIL461 is explained. The requirements of CISPR 16-1-1/ANSI C63.2 and MIL461G regarding the implementation as well as the equivalence to a traditional EMI receiver ensure traceability and the same test results. The difference between an FFT-analyzer\, a Real-time spectr um analyzer and the FFT-based measurement system are explained. Some pitfa lls of using scopes with FFT-mode or noncompliant real-time spectrum analy zers for EMI testing are explained. Table 2 of MIL461G points out differen t parameters regarding the dwell time for stepped scan and FFT-based measu rement system. During practical demonstration of the measurement of fluctu ating signals\, it is explained why a longer dwell time for FFT-based meas urements according to MIL461G is required. Also\, the advantages regarding the reproducibility and reduction of test time is shown. In addition to t raditional scanning FFT-based measuring instruments also offers new method s to visualize and analyzer signals. During the presentation also the usag e of spectrogram\, time-domain analysis and complaint Real-time spectrum a nalyzer are shown. Applications like the detection of cycles of emissions as well as the identification of sources using correlation methods are sho wn. In addition\, the changes given in MIL461H regarding EMI testing is pr esented.\n\nSpeaker(s): Dr. Stephan Braun \, \n\nAgenda: \nMeeting Agenda: \n\nDinner and Networking 6:30 to 7:00\n\nAnnouncements 7:00 to 7:15\n\nPr esentation 7:15 to 8:15\n\nFinal Comments 8:15 to 8:30\n\nDLS Electronic S ystems\, Inc.\, 1250 Peterson Dr.\, Wheeling\, Illinois\, United States\, 60090 LOCATION:DLS Electronic Systems\, Inc.\, 1250 Peterson Dr.\, Wheeling\, Ill inois\, United States\, 60090 ORGANIZER:jblack@dlsemc.com SEQUENCE:64 SUMMARY:Traditional and FFT-based EMI Measurements according to MIL STD 461 and RTCA DO160 URL;VALUE=URI:https://events.vtools.ieee.org/m/584918 X-ALT-DESC:Description: <br /><p><span style="font-size: small\;"><strong>T he Chicago Chapter of IEEE EMC Society \, Invites you to our November 19\, 2026 meeting.&nbsp\;&nbsp\;</strong></span></p>\n<p><span style="font-siz e: small\;"><strong>The topic of understanding modern EMI Measurement Equi pment should be of interest to all EMC practitioners.&nbsp\;</strong></spa n></p>\n<p><span style="font-size: small\;"><strong><img src="https://even ts.vtools.ieee.org/vtools_ui/media/display/b1adb169-7a8c-468d-88cd-8c8aeb2 0d3bb"><img src="https://events.vtools.ieee.org/vtools_ui/media/display/2d 7bd7a1-5067-4148-a948-626b69d699f5"></strong></span></p>\n<p><span style=" font-size: small\;"><strong>Abstract: Traditionally\, EMI Measurements are performed by spectrum analyzers or EMI receivers. Using the FFT-based mea surement systems for EMI testing can reduce test time\, improve the repeat ability of EMI tests. While MIL461F defines the settings of dwell and swee p time for spectrum analyzers and EMI receivers\, MIL461F defines the firs t-time parameters and requirements for the FFT-based measurement systems.< /strong></span></p>\n<p><span style="font-size: small\;"><strong>During th e presentation the technological and mathematical background FFT-based mea surement according to CISPR 16-1-1/ANSI C63.2 and MIL461 is explained. The requirements of CISPR 16-1-1/ANSI C63.2 and MIL461G regarding the impleme ntation as well as the equivalence to a traditional EMI receiver ensure tr aceability and the same test results. The difference between an FFT-analyz er\, a Real-time spectrum analyzer and the FFT-based measurement system ar e explained. Some pitfalls of using scopes with FFT-mode or noncompliant r eal-time spectrum analyzers for EMI testing are explained. Table 2 of MIL4 61G points out different parameters regarding the dwell time for stepped s can and FFT-based measurement system. During practical demonstration of th e measurement of fluctuating signals\, it is explained why a longer dwell time for FFT-based measurements according to MIL461G is required. Also\, t he advantages regarding the reproducibility and reduction of test time is shown. In addition to traditional scanning FFT-based measuring instruments also offers new methods to visualize and analyzer signals. During the pre sentation also the usage of spectrogram\, time-domain analysis and complai nt Real-time spectrum analyzer are shown. Applications like the detection of cycles of emissions as well as the identification of sources using corr elation methods are shown. In addition\, the changes given in MIL461H rega rding EMI testing is presented.</strong></span></p><br /><br />Agenda: <br /><p><span style="color: #ee0000\;"><span style="font-size: large\;"><str ong>Meeting Agenda:</strong></span></span></p>\n<p><strong>Dinner and Netw orking&nbsp\; &nbsp\; &nbsp\; 6:30 to 7:00</strong></p>\n<p><strong>Announ cements&nbsp\; &nbsp\; &nbsp\; &nbsp\; &nbsp\; &nbsp\; &nbsp\; &nbsp\; &nb sp\; 7:00 to 7:15</strong></p>\n<p><strong>Presentation&nbsp\; &nbsp\; &nb sp\; &nbsp\; &nbsp\; &nbsp\; &nbsp\; &nbsp\; &nbsp\; &nbsp\; &nbsp\; &nbsp \; 7:15 to 8:15</strong></p>\n<p><strong>Final Comments&nbsp\; &nbsp\; &nb sp\; &nbsp\; &nbsp\; &nbsp\; &nbsp\; &nbsp\; &nbsp\; &nbsp\;8:15 to 8:30</ strong></p>\n<p><br><br></p> END:VEVENT END:VCALENDAR