US Homeland Security/
Voting Equipment Immunity Testing and Wireless Topics Reviewed
The Society’s Standards Development Committee (SDCom) has
been recently presented a challenge. It was asked to review RF
immunity requirements specifications for critical equipment used
in US Homeland Security requirements. Equipment covered here includes
truck/container scanners, not just personal scanning equipment.
Also included in the request was to review similar immunity test
levels that would apply to voting equipment standards, which are
being used by the US Election Assistance Commission. The question
was what are the best EMC standards to use as well as at what
test levels? In addition, is there a need for test to failure
rather than just a test level pass to ensure the failure mode
is acceptable (i.e. no false votes or missed materials at a scanner).
Further, there is still no easy way to define a failure mode as
it depends on an operation knowing that there is a problem for
either a person using scanning equipment or voting equipment.
The SDCom is now reviewing the immunity specifications to respond
to the US agency with its recommendation as the committee believes
that the EMC Society should get involved to the extent of drafting
a test to failure procedure and determine if the equipment fails
safe or in at least an acceptable manner such as an error message
which means that a check must be made to see why.
The next study project includes the work on software-defined radio.
IEEE standard activity revolves around the action draft standards
activity under the number P1900 series of proposed standards.
A meeting was held in March where representatives of the EMC Society
Standards Development Committee (SDCom) met to discuss IEEE 802.19,
which deals with co-existent or wireless local area networks,
and other radio services in the 2.45 GHz frequency range. The
SDCom chair, Stephen Berger, was in attendance and reported on
an analysis method for determining when interference occurs in
radio receivers occupying that portion of the radio spectrum.
The receiver immunity is addressed in the P1900.2 draft standard.
(Note: many IEEE standards that are directly related take a number
after the main number by a .1, .2. etc. suffix). It should be
noted that at the next day EMC Society Board of Directors meeting,
the author proposed that the scope of the EMC Society should extend
to in-band interference issues which heretofore has been solely
considered a spectrum allocation issue. With the advent of software
defined radio (SDR), which can operate on many different portions
of the radio spectrum, interference to radio receivers, both in-band
and out of band (not in the receive channel(s)), this scope expansion
is needed for the EMC Society to stay relevant to this new technology.
We will report the outcome of this challenge in this column when
we have more information.
SDCom then approved a new study project proposed by Dr. John Chapin
(Vanu Corporation), to develop a test method to verify that SDR
is working as desired. Stephen Berger will prepare the documentation
and lead the volunteer work with help from Andy Drozd, Ed Hare,
and the author. This will require again further extension of EMC
into spectrum allocation and radio receiver immunity issues. As
mentioned above, the author presented the SDCom need for the extension
of the EMC Society scope to allow SDCom to get into new technologies
in the wireless arena as they emerge.
To facilitate keeping abreast of these new technologies and associated
regulatory issues, SDCom approved in principle the establishment
of an “External Communications Planning Committee.”
There was a note of caution of any interactions that would have
legal issues as well as possible conflicts that might arise with
other standards developers. The first output of this committee
will be to define its scope, which will be approved by SDCom.
Other Actions Taken By SDCom Included:
a. Approved a new PAR from Sabrina Sarto for IEEE Standard 299
(to be designated Standard 299.1) concerning the shielding effectiveness
of small enclosures and boxes (having linear dimensions between
0.1 – 2 m at frequencies up to 18 GHz). SDCom member Bruce
Archambeault volunteered to join this committee and work with
Sabrina, especially in addressing the apparent gap of linear dimensions
between 0.75 m and 2 m.
b. Approved SDCom to offer the Broadband Power Line (IEEE Standard
P1775) access standards group venues to meet at during the annual
IEEE EMC symposium or in conjunction with other EMC meetings.
This work has much EMC activities and in fact has EMC in its title.
The EMC Society is the co-sponsor with the Power Engineering Society
(PES), which started this work. The P1775 committee is heavily
represented by BPL systems manufacturers; hence the meetings are
at BPL events. The SDCom believes that offering meeting venues
at EMC events seems like an appropriate suggestion. Along with
the PES and EMC Society, there is now a strong interest by the
Communications Society. The SDCom encouraged a Memorandum of Understanding
is written between the three societies so that each knows their
respective roles in this activity. The first step is to have an
MOU between ComSoc and the EMC Society and then approach PES to
work out any further understandings of how to form operating procedures
among the societies. Stephen Berger will lead the MOU activity
by drafting these MOUs.
c. Requested that all standards working groups as well as the
SDCom itself provide the chair of SDCom with budget estimates
for meetings they plan to hold at the 2006 Portland EMC Symposium.
These budget estimates are due to Stephen Berger by the time this
Newsletter is published to ensure that the total VP for Standards
budget is not exceeded. For our readers that usually attend these
Working Group (WG) and SDCom meetings, the author suggests that
you contact your WG or committee chair to confirm attendance.
In this way, the cost for any food function can be more accurately
ASC C63™ Meets in Piscataway and Announces Antenna Calibration
Workshop at the 2006 IEEE International Symposium on EMC in Portland
The Standards Development Committee of the EMC Society is a voting
member of Accredited Standards Committee C63™ (EMC), which
is noted for its standards on such topics as emission measurements,
emission test instrumentation, compliance measurements of unlicensed
personal communications systems (in the USA), and EMC of mobile
phones used by the hearing impaired using hearing aids. C63™
met mid March at IEEE headquarters in Piscataway, New Jersey USA.
The full day meeting focused on many topics of interest to the
EMC Society including updates on the committee’s standards
activity in the following standards:
1. C63.2 (Emission test equipment specifications)
2. C63.4 (Emission measurement method including measurements above
3. C63.5 (Emission antenna calibration including the status of
the 2006 edition)
4. C63.9 (Immunity of office equipment to radiated immunity levels)
5. C63.15 (Immunity test instrumentation requirements and non-standard
immunity test methods)
6. C63.16 (ESD test methodologies and the status of the next edition)
7. C63.17 (Compliance measurements of unlicensed personal communications
8. C63.18 (Ad hoc testing of installed medical devices)
9. C63.19 (EMC of mobile phones used by the hearing impaired wearing
10. C63.22 (Guide for automated emission and immunity testing)
11. C63.23 (Measurement uncertainty as applied to C63™ standards)
The committee is also discussing EMC of power line communication
systems as well as specific test techniques for showing compliance
of low power transmitters with in-band and out of band limits.
These transmitters include classical narrowband emissions as well
as broadband spectrum application.
Each of the seven subcommittees also presented short reports.
Their membership was approved for the year as well. Finally, the
chair (the author of this column) presented an announcement of
a workshop on ANSI C63.5-2006 that will be held the Saturday before
the EMC Symposium in Portland this August. The registration form
and information on the topics to be covered are included in the
special section on the 2006 IEEE International Symposium on EMC
in Portland in this Newsletter (see page 41). EMC
Dave Guzman Named Vice Chairman of EMC Society
Standards Advisory and Coordination Committee (SACCom)
Since July of 2002, Mr. Guzman has been involved in EMC consulting
and contracting, doing business as RFTEK. During this time, David
has participated in a variety of EMC projects involving design,
testing, training and laboratory accreditation in the telecommunication,
industrial controls, information technology, automotive and semiconductor
industries. The variety of projects has allowed Mr. Guzman to
obtain exposure to many EMC standards in these industries. Prior
to starting RFTEK operations, David was the Laboratory Technical
Manager and EMC Design group leader for the US division of Solectron
in Durham, North Carolina. From 2000 to 2001, David was a Senior
RF and EMC Engineer at RF Microdevices in Greensboro, North Carolina
with responsibility for the development of EMC design practices
applied to broadband amplifiers used in cable modems. Prior to
that David spent a year at Nortel Networks in RTP, North Carolina
as a Senior EMC Engineer involved in the design and testing of
high frequency telecommunications hardware for compliance with
worldwide EMC regulations. David was also responsible for the
management and accreditation of the Nortel Networks EMC lab. From
1989 to 1999, David progressed from Junior Engineer to Staff EMC
Engineer at Square D Company, in Knightdale, North Carolina. During
this time David assisted in the EMC design and testing of multiple
types of control devices including photoelectric sensors, programmable
logic controllers, welder controls, variable frequency drives,
and industrial networks. David also had the opportunity to specify,
develop and manage the Square D EMC laboratory. David holds a
B.Sc. from the University of Rhode Island, a M.Sc. from the University
of Nebraska, and a M.Sc. in Electrical Engineering from North
Carolina State University. David has been a member of the IEEE
and EMC Society since 1995. David also serves as Chair of the
Eastern North Carolina EMC chapter, and is a member of the Electrostatic
Society of America. David can be reached at email@example.com.