2004 SE Michigan Reverberation Workshop

Speaker: Michael O. Hatfield, Naval Surface Warfare Center Dahlgren Division (NSWCDD)

Abstract: No one will deny that today's automobiles and vehicles are using more electronics than ever, and all agree that the trend will continue for the foreseeable future! As a consequence, within the automotive industry there must be a continual emphasis to identify cost effective EM test techniques that also maintain high accuracy (lower uncertainties). This is especially true for large vehicles such as tractors, combines, busses, etc. The traditional approach has been that as the number of "boxes" increases, the number of tests that must be conducted increases (which increases costs). In addition, as electronics are being used for more critical vehicle control functions, the test methods must also maintain their thoroughness. Past methods of testing have utilized the anechoic chamber. This workshop will discuss the use of the reverberation chamber to meet these new demands as an effective alternative to the anechoic techniques

About The Speaker: Mike Hatfield has been with the Naval Surface Warfare Center Dahlgren Division (NSWCDD), Dahlgren, VA, since receiving his B.S. degree in Electrical Engineering from the West Virginia Institute of Technology in 1979. He was assigned to the Electromagnetic Performance of Aircraft and Ship Systems (EMPASS) project until 1982. Since 1982 he has been in the Systems Electromagnetic Effects Branch where he is in charge of development and operation of the NSWC Reverberation Chamber Facility. He is a member of the IEEE EMC Society Board of Directors and has been actively publishing articles about Reverberation Chambers in the IEEE Transactions on EMC and at the IEEE annual EMC Symposia since 1988. The Navy awarded Mike the Haislmaier Award in 1997 for his work in Electromagnetic Environmental Effects. The IEEE EMC Society awarded Mike the Richard R. Stoddart Award in 1995 and the Laurence G. Cumming Award in 1997 for his work with Reverberation Chambers. Mike works in the Electromagnetic Effects Division of NSWCDD, which addresses and resolves electromagnetic compatibility problems for the U.S. Navy. Mike is also a member of the Science and Technology Panel that reviews research and development efforts at NSWCDD. Mike is a member of International Electrotechnical Commission (IEC) SC/77B Working Group 10 and is the U.S. Representative to and Convener for IEC standard 61000-4-21 on Reverberation Chambers.

Please note a 15-minute coffee break will be provided at the speaker’s discretion during this presentation.

Noon LUNCH BREAK (a lunch buffet BBQ from Famous Dave's will be provided)

1:00 pm Terry North and Andrew Shune, DaimlerChrysler: An overview of the test techniques utilized by DaimlerChrysler with reverberation chambers, now and planned usage for the future.

2:00 pm Laura Ball and Kevin Pender, General Motors: An overview of the test techniques utilized by General Motors with reverberation chambers, now and planned usage for the future.

3:00 pm REFRESHMENT BREAK, INFORMAL DISCUSSION WITH THE SPEAKERS

3:30 pm Michael O. Hatfield summarizes the key information shared during the day and shares information on the latest work undertaken by IEC SC/77B Working Group 10 and the proposed revisions to IEC 61000-4-21 on Reverberation Chambers.

4:30 pm Panel discussion with the speakers

5:00 pm Adjourn

AGENDA
WEDNESDAY, SEPTEMBER 15, 2004

8:00 am: Registration opens and continental breakfast is served

8:30 am: Part 1 of The Practical Usage of Reverberation Chambers:

How to specify a reverberation chamber, cost versus benefits of this type of testing, challenges still to be addressed, design and performance trade-offs, the theoretical basis for using reverberation chambers, the parameters used in the standards, and the development of pulse modulation, among other topics.

Speaker: Garth D’Abreu, ETS-Lindgren

10:00 am REFRESHMENT BREAK

10:30 am Part 2 of The Practical Usage of Reverberation Chambers:

Software and test measurement instrumentation needed for efficiently and cost effectively performing your reverberation chamber testing.

Speaker: Sean Emerson, Rohde & Schwarz

Noon LUNCH BREAK (a lunch buffet BBQ from Famous Dave's will be provided)

Please note demonstrations will be provided by the speakers during the Wednesday Workshop.

TO REGISTER: PLEASE REGISTER ON LINE BY SEPTEMBER 6, 2004 AT https://www.emcsociety.org/reverbregistration.html

REGISTRATION FEES:

$100 per person if registered on line by July 1

$150 per person if registered on line July 2-September 6

No more registrations after September 6

REGISTRATION FEES QUOTED ARE FOR IEEE MEMBERS ONLY. NONMEMBERS: ADD $50 TO ABOVE FEES.

FEES INCLUDE: Continental breakfast and refreshment breaks each day, lunch on the first day, and a program of the speakers notes.

SPACE IS LIMITED TO 70 STUDENTS. REGISTRATION WILL BE CONFIRMED ON A FIRST COME, FIRST SERVED BASIS UNTIL SPACE IS FULL. NO REFUNDS WILL BE GIVEN FOR REGISTRATION FEES AFTER AUGUST 1. SUBSTITUTIONS ARE ALLOWED.

IEEE EMCFest '2004 Committee

Committee Chair
& Conference Notes Handbook
Janet O'Neil
ETS/Lindgren
j.n.oneil@ieee.org

Registrations
Scott Lytle
s.r.lytle@ieee.org

Treasurer
Graeme Rogerson
Graeme.Rogerson@ieee.org

Committee Member
Kimball Williams
k.williams@ieee.org

The SE Michigan EMC Chapter held a two-day workshop on September 14 and 15 entitled “Reverberation Chambers for EMC Testing.” The workshop was designed for the automotive EMC community and held at EST Testing Solutions in Plymouth, Michigan. Speakers included reverberation chamber industry guru, Michael O. Hatfield, from the Naval Surface Warfare Center in Dahlgren, Virginia. Mr. Hatfield started the workshop with a three-hour presentation on the history and evolution of reverberation chamber testing methodology. He explained that no one would deny that today’s automobiles and vehicles are using more electronics than ever, and all agree that the trend will continue for the foreseeable future. As a consequence, within the automotive industry there must be a continual emphasis to identify cost effective EM test techniques that also maintain high accuracy (lower uncertainties). This is especially true for large vehicles such as tractors, combines, busses, etc. The traditional approach has been that as the number of “boxes” increases, the number of tests that must be conducted increases (which increases costs). In addition, as electronics are being used for more critical vehicle control functions, the test methods must also maintain their thoroughness. Past methods of testing have utilized the anechoic chamber. Mr. Hatfield advised that this workshop would discuss the use of the reverberation chamber to meet these new demands as an effective alternative to the anechoic chamber techniques. Speakers Terry North and Andrew Shune of DaimlerChrysler followed Mr. Hatfield’s presentation with a summary of the test techniques utilized by DaimlerChrysler with reverberation chambers, both now and planned usage for the future. Speakers Laura Ball and Kevin Pender of General Motors concluded the first day of the workshop with an overview of the test techniques utilized by General Motors with reverberation chambers, both now and planned usage for the future. They included an overview of the standard GMW3097 Rev 4 Reverberation Emissions Testing and Mode Stir Testing. Many questions followed this presentation. The following day, the “Practical Usage of Reverberation Chamber Testing Methodology” was presented. Garth D’Abreu of ETS-Lindgren started the day with a presentation on how to specify a reverberation chamber. He reviewed the cost versus benefits of this type of testing, the challenges still to be addressed, design and performance trade-offs, the theoretical basis for using reverberation chambers, the parameters used in the standards, and the development of pulse modulation, among other topics. Sean Emerson of Rohde & Schwarz was the second speaker. His presentation addressed the software and test measurement instrumentation needed for efficiently and cost effectively performing reverberation chamber testing. Mike Hatfield then concluded the workshop with a summary of what had been presented. Lastly, he discussed future considerations for reverberation chamber testing, including the existing and expected direction various EMC standards will take globally on this type of testing. Over 70 Chapter members and guests attended this two-day workshop, some from as far away as Atlanta. In addition to hearing several excellent presentations by industry experts on the topic, all were able to tour the new reverberation chamber on site at EST and witness hands-on testing. SE Michigan Chapter Chair Scott Lytle was very enthusiastic about the positive response to the quality of the workshop. He particularly acknowledged the assistance of the staff at EST, including Steve English and Donna Wenzel, who handled the logistics of the event. Chapter Treasurer Graeme Rogerson did an outstanding job of ordering the excellent food from Buster’s Barbeque served during lunch each day, as well as the tables and chairs brought in for the “classroom” style seating. Janet O’Neil of ETS-Lindgren coordinated the technical program and provided the handouts of speaker’s presentation slides. Phil Dew raided his office and provided lots of “freebies” for the attendees to take home, including coffee mugs and bags from Rohde & Schwarz as well as mouse pads from AR Worldwide and more! Kimball Williams of UL, Chapter Secretary, concluded the workshop by thanking the speakers for generously donating their time and talents, as well as the staff at EST, including Steve Dykstra, President, for allowing the Chapter to take over their facility for two days of IEEE EMC educational activity.