RE: Product Safety Society By-Laws

[Flinders, Randall]

If it holds true to the way that the EMC Society dues are paid, these dues are
collected when the IEEE member pays his/her annual IEEE Membership dues.  In
the case of the EMC Soceity, I believe this is about $18/year.  If you don't
pay the society dues, then you are not a member for that year.  
 
When you renew your IEEE membership, you are given the option of joining any
or all of the societies.  The annual dues are then collected along with the
IEEE membership dues.  Once the dues are paid, you are a member of that
society and receive all of the society benefits, including any society
publications or newsletters.  I expect that you will see the Product Safety
Society on your next IEEE renewal form.
 
Regards,
 
 
Randall Flinders 
Vice-Chair 
IEEE EMC Society - Orange County Chapter 
  
Direct:  (714) 513-8012 
Fax: (714) 513-8265 
Email:   rflind...@ieee.org< mailto:rflind...@ieee.org> 
Web: http://www.ieee.org/oc-emc 


From: Jacob Schanker [mailto:schan...@frontiernet.net]
Sent: Friday, October 03, 2003 12:33 PM
To: EMC-PSTC
Subject: Product Safety Society By-Laws 


The IEEE Product Safety Engineering Society has an interesting clause in their
By-Laws regarding the payment of dues:
 

8.1 Society annual assessment of fees 

The annual Society fee shall be determined by action of the Board of
Directors. Failure of a Society member to pay the annual Society fee will not
render him liable to dismissal from the IEEE. Any Society member who fails to
pay such fee before 31 February of each year will be automatically dropped
>from the Society membership. 

 

Anyone care to comment on this? (It is Friday, after all!)

 

Jacob Z. Schanker, P.E.
65 Crandon Way
Rochester, NY 14618

Tel: 585 442 3909
Fax: 585 442 2182
j.schan...@ieee.org

EMCFest '03 - Irvine,Ca. 6/12/03

[Flinders, Randall]

Greetings Compliance Professionals!

You are invited to Southern California's hottest EMC event of the year -
EMCFest '03! This is a one-day tutorial sponsored by the Orange County
Chapter of the IEEE EMC Society. The event will feature technical
presentations, Interesting experiments and demonstrations, exhibits by the
leading providers of EMC technology and services, exciting raffles and
prizes, as well as a delicious lunch and reception!  You don't want to miss
this one!

Title: "Electromagnetic Compatibility: Black Magic Dispelled (and replaced
by basic physics)"

Speakers: W. Michael King and Douglas C. Smith

List-Post: emc-pstc@listserv.ieee.org
List-Post: emc-pstc@listserv.ieee.org
List-Post: emc-pstc@listserv.ieee.org
List-Post: emc-pstc@listserv.ieee.org
Date: June 12th, 2003

Location: Irvine Hyatt Regency, Irvine, Ca.

Cost: The registration fee is only $150.00 for IEEE members!  (A $25
non-member fee is applied to all non-IEEE members.)  Seating is limited, so
make your reservation now!

Prizes: Register now and be automatically entered into raffle drawings to
win a Com-Power near-field probe set, a fully licensed EMCT Electromagnetic
Compatibility training software package, or a 3 megapixel digital camera!
(Estimated chance of winning - 1 in 30!)

For more information, or to download the printable registration form, visit
the Orange County chapter's website at http://www.ieee.org/oc-emc or email
Randy Flinders at rflind...@ieee.org.


Randall Flinders
Vice-Chair
IEEE EMC Society - Orange County Chapter
 
Direct:  (714) 513-8012 
Fax: (714) 513-8265 
Email:   rflind...@ieee.org
Web: http://www.ieee.org/oc-emc



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BSMI apprived peripherals

[Flinders, Randall]

Greetings everyone!

We are currently searching for BSMI approved peripherals (keyboard, mouse,
serial, parallel, and USB) for use in BSMI certification of PC devices.  Can
anyone recommend specific peripherals that they have found to provide a
favorable emissions profile when compared to Cispr 22 Class B limits?  

Thanks,

Randy Flinders
Senior Compliance Engineer
 
Emulex Corporation - We Network Storage   
3535 Harbor Blvd.
Costa Mesa, Ca. 92626
 
Direct:  (714) 513-8012 
Fax: (714) 513-8265
Email:   randall.flind...@emulex.com 
Web:  
 
 



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RE: PC EMI

[Flinders, Randall]

I am sure you also addressed this but since I have 2 cents to add...

A front-end overload condition on the receiver/analyzer, or an overload at
the pre-amplifier, can cause errors in measurement that may seem
transparent.  A local transmitter could be overloading your measurement
system and increasing your emissions readings

Again, take it at what it is worth!  (2 cents)

Randy Flinders
Senior Compliance Engineer
 
Emulex Corporation - We Network Storage   
3535 Harbor Blvd.
Costa Mesa, Ca. 92626
 
Direct:  (714) 513-8012 
Fax: (714) 513-8265
Email:   randall.flind...@emulex.com 
Web:  
 


From: drcuthbert [mailto:drcuthb...@micron.com]
Sent: Tuesday, March 25, 2003 2:31 PM
To: 'lfresea...@aol.com'; 'emc-p...@majordomo.ieee.org'
Subject: PC EMI



Derrick,

I'm sure you used the antenna factors correctly but I'll put in my 2 cents
worth anyway. Were the AF's used correctly? You need the TX AF and the RX
AF. If the receive antenna factor was used as the transmit antenna factor
that will skew the calibration. 

  Dave Cuthbert


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IEEE EMCS Meeting March 18 - Orange County, Ca

[Flinders, Randall]

IEEE Meeting March 18 2003.

Topic:

"Basic Regulations and the Practice of Conformity Assessment in Russia, with
some specific examples."
Member states of the former Soviet Union represent a significant and rapidly
growing emerging market for information technology equipment, household
appliances, industrial machinery, medical devices and instrumentation, and
equipment intended for use in hazardous locations.
Russia, through its standards-writing, certification and accreditation
organization, GOSSTANDART, has taken the lead in the effort to develop a
standards and certification system for products imported into that country.

Speakers:

TUV Rheinland of North America is sponsoring a series of lectures by two
pioneers in the Russian certification effort, Dr. Yuri Gousakov, and Mr.
Victor Timko.

Mr. Victor Timko graduated from the Moscow Electrotechnical Institute for
Communications in 1968 with a degree in engineering. He worked in design at
the Moscow Electromechanical Plant, and in the All-Union Radio Engineering
Institute for Science and Research.
Presently he is the Deputy Director of the Russian Scientific and Research
Institute for Certification, VNIIS. VNIIS is accredited to issue GOST-R
Certificates of Conformity to products demonstrating compliance with Russian
National Standards. Mr. Timko has ten years of experience in certification
of electrical, electronic, computer, and telecommunication products, dating
back to the beginning of the present Russian certification system.
Dr. Gousakov has been involved in the Russian Gosstandart system for over
thirty years, in different scientific-research and educational institutes.
He was involved in the drafting of regulations regarding the importation of
products subject of mandatory certification into the territory of Russian
Federation. He has hands-on experience with certification of a multitude of
products imported to Russia, including electrical products and industrial
machinery. In 2000 he was elected President of the "Russian Organization of
Certification Bodies, Testing and Measuring Laboratories," "Rosispytaniya"
known in English by the abbreviation RTO. This organization was created by
Gosstandart to unite the various certification bodies and testing
laboratories accredited to test to Gosstandart requirements. He earned his
Doctorate in the field of Economy in 1997, and Professorship in 2000.

Where:

Newport Corporation
1791 Deere Avenue
Irvine, CA 92606

When:

March 18, 2003
6:00pm Dinner
MEETINGS ARE NOW FREE
FREE! for IEEE Members and Students with Valid Student ID Card
FREE! for non-IEEE Members
Reservations requested
Please e-mail or call.
Robert Tozier at 714-337-1133 or
robert.toz...@ckc.com

Important Notice:
2003 DJM Electronics EMC Forum
A free one day event featuring talks on some of the most controversial
topics in EMC. To sign up go to the website below.
http://www.djmelectronics.com/forum.html

Regards,


Robert Tozier
Chairman
Orange County Chapter, IEEE EMC Society
Direct 714-337-1133
Office 714-993-6112
Fax 714-993-0171


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FW: IEEE Meeting at Emulex

[Flinders, Randall]

This is a multi-part message in MIME format.



From: Robert Tozier [mailto:robert.toz...@ckc.com]
Sent: Wednesday, February 12, 2003 3:51 PM
To: Flinders, Randall
Subject: IEEE Meeting at Emulex


 IEEE Meeting February 25, 2003 at 6:30 pm

The Continuum of ESD as Exhibited in Nature and Applied to Systems

The presentation will consist of reviewing the dynamic continuum of impulse
waveforms experienced for personnel ESD as it occurs in nature combined with
the mechanisms that produce the variables in these effects. The ESD impulse
wave shapes will be described for : humans directly; humans with metallic
objects; and ESD from furnishings, such as chairs and carts. These "real"
ESD events will be contrasted to those established by standards committees.
A brief over-view of how different spectra derived from various ESD
amplitudes effectively propagates in systems will conclude the program.

Speaker:
W. Michael King
W. Michael King, after a period of design and production in the professional
audio recording industry, entered the field that is now known as EMC in 1960
(at that time the concept was defined simply as a segment within the
discipline of systems integration and spectrum management) when still in
education with the Capitol Radio Engineering Institute (CREI - accredited EE
program). He has been participating in the field of Electromagnetic
Compatibility (EMC) engineering for over forty-two years. Within that
period, he has been: engaged in the EMC definition, design, evaluation,
implementation, management and execution of well over (an estimated) one
thousand programs and projects; engaged in contracts with over 1,000 project
and systems developers with over 400 clients. During his tenure in the
engineering and management disciplines he has held positions that, as a
partial though significant list, include (in sequence): Lab EMC supervisor;
Lab manager; Systems Engineer; Director, Systems Engineering; Project
Manager for ELINT; Senior Technical Specialist (Airesearch); Chief
Electronics Engineer (Teledyne Radar Relay Division); Manager of EMI/EMC
Operations; Technical Program Monitor for NAVSEC/SYSCOM; EMC Integration
Advisor to NAVWEPS/NWC; Advisor/Integration USAF/MOL Orthogonal Array; Plant
Operations General Manager; EMC Program Manager; Policy Advisor to Senior
Corporate Staffs (Government and Commercial Projects); and General
Program/Hardware manager for many projects.
The speaker was responsible for seminal studies in ESD that contributed to
the art as it is known today.
Please visit:
www.systemsemc.com or www.systems-emc.com for more information about the
speaker.

Location:
Emulex Corporation in Costa Mesa
Entrance between the Emulex and QLogic buildings
3535 Harbor Blvd
Costa Mesa, Ca. 92626

When:
February 25, 2003
6:30pm Dinner Served
Presentation 7:00pm to 8:00pm

MEETINGS ARE NOW FREE
FREE! for IEEE Members and Students with Valid Student ID Card
FREE! for non-IEEE Members
Reservations requested by 5:00 p.m. February 21.
Please e-mail or call.
Robert Tozier at 714-337-1133 or
robert.toz...@ckc.com

Best Regards,


Robert Tozier
Business Development Specialist
CKC Laboratories, Inc.
Direct 714-337-1133
Office 714-993-6112
Fax 714-993-0171
Toll-Free (800) 500-4EMC

http//: www.ckc.com
CKC Certifications Services has been designated as a TCB for all scopes
subject to  US (FCC) Certifications!  Go to http://www.ckccertification.com
for more information.


Title: FW: IEEE Meeting at Emulex








-Original Message-

From: Robert Tozier [mailto:robert.toz...@ckc.com]

Sent: Wednesday, February 12, 2003 3:51 PM

To: Flinders, Randall

Subject: IEEE Meeting at Emulex



 IEEE Meeting February 25, 2003 at 6:30 pm


The Continuum of ESD as Exhibited in Nature and Applied to Systems


The presentation will consist of reviewing the dynamic continuum of impulse

waveforms experienced for personnel ESD as it occurs in nature combined with

the mechanisms that produce the variables in these effects. The ESD impulse

wave shapes will be described for : humans directly; humans with metallic

objects; and ESD from furnishings, such as chairs and carts. These "real"

ESD events will be contrasted to those established by standards committees.

A brief over-view of how different spectra derived from various ESD

amplitudes effectively propagates in systems will conclude the program.


Speaker:

W. Michael King

W. Michael King, after a period of design and production in the professional

audio recording industry, entered the field that is now known as EMC in 1960

(at that time the concept was defined simply as a segment within the

discipline of systems integration and spectrum management) when still in

education with the Capitol Radio Engineering Institute (CREI - accredited EE

program). He has been participating in the field of Electromagnetic

Compatibility (EMC) engineering for over forty-two years. Within that

period, he has been: engaged in the EMC definition

Orange County Presentation: "Two Layer PCB EMC Design Techniques" .

[Flinders, Randall]

 IEEE Meeting January 16, 2003 at 6:30 pm

"Two Layer PCB EMC Design Techniques".

The presentation will cover various design techniques that will assist in
designing a two layer PCB to meet EMC requirements.  These techniques are
used
in various products with processors up to 500MHz and 100MHz data buses.  The
general topics will cover how to manage the spectrum of the sources, logic
design problems that cause excessive emissions, component placement and
layout
techniques.

Presentation by:
Dr. Keith B. Hardin

Dr. Keith B. Hardin received a Bachelor of Science in 1981 and Masters of
Engineering in 1982 from the University of Louisville specializing in
Electrical Engineering. He joined IBM in the typewriter and printer
development teams which designed and developed a number of products.

In 1989, Dr. Hardin was selected to participate in the IBM Resident Study
Program, which provided full support for him to pursue a Ph.D. degree in
Electrical Engineering, specializing in ElectroMagnetic
Compatibility (EMC) at the University of Kentucky under Dr. Clayton Paul.
The degree was completed in 1991 and he returned to Lexmark International, a
spin off of IBM, as an engineer in the EMC department.
Dr. Hardin is a NARTE certified EMC engineer and a registered Professional
Engineer in the state of Kentucky.  Dr. Hardin is now a Senior Technical
Staff Member in the EMC Technology Group at Lexmark. His primary job
function is to consult with internal and external customers for EMC
compliance and performs research to advance Lexmark's understanding of EMC
phenomena.  His interests are in
reducing emissions of information technology equipment and attaining EMC
compliance with minimal cost.  He is a co-inventor of Spread Spectrum Clock
Generation which is use in millions of
products every year.

Location:
CKC Laboratories in Brea
Located in Small Shopping Center
110 North Olinda Place
Brea, CA 92823
714-337-1133
Office: 714-993-6112

When:
January 16, 2003
6:30pm Dinner Served
Presentation 7:00pm to 8:00pm

Cost:
MEETINGS ARE NOW FREE AND OPEN TO ANYONE

Reservations requested by 5:00 p.m. January 13.
Please e-mail or call.
Robert Tozier at 714-337-1133 or
robert.toz...@ckc.com


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EMC/PS Engineer availabe in Orange County

[Flinders, Randall]

I am posting this for a friend who was recently laid off from Aegis Labs in
Orange County.

He is seeking a Product Safety or EMC position here in the county.

(Resume attached in PDF format)

Randy Flinders
Electromagnetic Compatibility Engineer
 
Emulex Corporation - We Network Storage   
3535 Harbor Blvd.
Costa Mesa, Ca. 92626
 
Direct:  (714) 513-8012 
Fax: (714) 513-5408 
Email:   randall.flind...@emulex.com 
Web:  
 
 
 <> 


MIKE_CLARK.pdf
Description: Binary data

Temp/Humidity Meter

[Flinders, Randall]

Greetings fellow EMC'ers..

We are looking for a quality outdoor Temperature/Humidity meter for our open
area test site.  Any recommendations?

Thanks!

Randy Flinders
Electromagnetic Compatibility Engineer
 
Emulex Corporation - We Network Storage   
3535 Harbor Blvd.
Costa Mesa, Ca. 92626
 
Direct:  (714) 513-8012 
Fax: (714) 513-5408 
Email:   randall.flind...@emulex.com 
Web:  
 
 


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Record Retention

[Flinders, Randall]

Can anyone give me the record retention requirements for FCC Part 15,
CE-Mark, and C-Tick certifications?  How long must we keep the test reports
once the product has gone obsolete?  I believe this to be 2 years from the
last date of manufacture for FCC but can't seem to find the section in the
regs.  Not sure where to even look for this information within the EMC
directive or C-Tick framework.  Any suggestions on where this information is
located would be helpful.

Thanks! 

Randy Flinders
Electromagnetic Compatibility Engineer
 
Emulex Corporation - We Network Storage   
3535 Harbor Blvd.
Costa Mesa, Ca. 92626
 
Direct:  (714) 513-8012 
Fax: (714) 513-5408 
Email:   randall.flind...@emulex.com 
Web:  
 
 


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IEEE/EMC Orange County Presentation Announcement

[Flinders, Randall]

Title:  The EMC Authorization of Wireless Devices in the US and EU

Abstract: The presentation provides an overview of the wireless product
approval process for EMC in the United States and in Europe.  The new FCC
authorization process through TCBs will be discussed as well as how the
R&TTE Directive is implemented in the European Union.

Bio: Greg Kiemel is the Director of Engineering at Northwest EMC, Inc.  He
has 16 years experience in the EMC field.  Mr. Kiemel is a NARTE-certified
EMC and ESD engineer, as well as a member of the IEEE.  He is active in
ACIL, USCEL, and TCB committees.  He is also a member of the TCB Council
Executive committee.  He earned his BS in Engineering from Weber State
University.  Mr. Kiemel is experienced in the areas of FCC, EU, Industry
Canada, BSMI, and VCCI regulatory approvals and noise suppression techniques
in product design.  Greg is in demand for his many design seminars and has
assisted in the regulatory approvals of hundreds of products.  Prior to his
nine years with Northwest EMC, he worked as the lead regulatory engineer in
the personal computer division at Epson Portland, Inc. and as an EMC
engineer at Tektronix, Inc.

Location:
Dave & Busters Restaurant 71 Fortune Drive Suite 960 Irvine, CA 92618
949-727-0555
There will be an open bar and Buffet Dinner starting at 6:00 pm hosted by
Northwest EMC.  Seating for this meeting will be limited!

When:
September 10, 2002
6:00 pm Dinner
7:00 pm - Presentation Begins
There will be limited seating for this meeting please RSVP by August 16.

Cost
MEETINGS ARE NOW FREE
FREE! for IEEE Members and Students with Valid Student ID Card
FREE! for non-IEEE Members

RSVP
Reservations requested by 5:00 p.m. August 16.  Please e-mail or call.
Robert Tozier at 714-337-1133 or
robert.toz...@ckc.com

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EMC and LV Directives online

[Flinders, Randall]

Greetings EMC/Product Safety Gurus!

Does anyone know if the EMC Directive and Low Voltage Directive texts are
available online?  

Thanks!

Randy Flinders
Electromagnetic Compatibility Engineer
 
Emulex Corporation - We Network Storage   
3535 Harbor Blvd.
Costa Mesa, Ca. 92626
 
Direct:  (714) 513-8012 
Fax: (714) 513-8265 
Email:   randall.flind...@emulex.com 
Web:  
 
 


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Orange County, Ca IEEE Meeting

[Flinders, Randall]

You are invited to attend the Orange County IEEE EMC Society meeting on
Tuesday, May 14, at CKC Laboratories in Brea.

Topic:
Shielding Effectiveness: A Practical View
The talk will cover shielding effectiveness from different points of view
including cable and system shielding. Examples and demonstrations of
shielding problems and fixes will be presented. Use of plane wave shielding
effectiveness specs of shielding material can sometimes lead to using the
wrong material in applications where shielding is needed between parts of a
system. A method of measuring shielding effectiveness that is easy to
perform and gives better results for some system shielding needs will be
discussed and demonstrated.

Sometimes, shielding no matter how well done can cause problems instead of
fixing them. An example of this will be given.

Speaker: Douglas C. Smith
Mr. Smith held an FCC First Class Radiotelephone license by age 16 and a
General Class amateur radio license at age 12. He received a B.E.E.E. degree
from Vanderbilt University in 1969 and an M.S.E.E. degree from the
California Institute of Technology in 1970. In 1970, he joined AT&T Bell
Laboratories as a Member of Technical Staff. He retired in 1996 as a
Distinguished Member of Technical Staff. From February 1996 to April 2000 he
was Manager of EMC Development and Test at Auspex Systems in Santa Clara,
CA. Mr. Smith currently is an independent consultant specializing in high
frequency measurements, circuit/system design and verification, switching
power supply noise and specifications, EMC, and immunity to transient noise.
He is a Senior Member of the IEEE and a member of the IEEE EMC Society Board
of Directors.
His technical interests include high frequency effects in electronic
circuits, including topics such as Electromagnetic Compatibility (EMC),
Electrostatic Discharge (ESD), Electrical Fast Transients (EFT), and other
forms of pulsed electromagnetic interference. He also has been involved with
FCC Part 68 testing and design, telephone system analog and digital design,
IC design, and computer simulation of circuits. He has been granted over 15
patents, several on measurement apparatus.
Mr. Smith has lectured at Vanderbilt University, AT&T Bell Labs, and at many
public and private seminars on high frequency measurements, circuit design,
ESD, and EMC. He is author of the book High Frequency Measurements and Noise
in Electronic Circuits and is currently working on his second book.

Where:
CKC Laboratories in Brea
Located in Small Shopping Center
110 North Olinda Place
Brea, CA 92823
Direct: 714-337-1133
Office: 714-993-6112

Link to Map:  http://www.ckc.com/lmapbrea.asp

When:
Tuesday, May 14, 2002
6:00 pm - Social Hour - Beverages Served
6:30 pm - Dinner Served
7:00 pm - Presentation Begins

MEETINGS ARE NOW FREE
FREE! for IEEE Members and Students with Valid Student ID Card
FREE! for non-IEEE Members

Reservations requested by 5:00 p.m. on Monday, May 13. Robert Tozier at
714-337-1133 or
robert.toz...@ckc.com


Robert Tozier
Business Development Specialist
CKC Laboratories, Inc.
Direct 714-337-1133
Office 714-993-6112
Fax 714-993-0171
Toll-Free (800) 500-4EMC

http//: www.ckc.com
CKC Certifications Services has been designated as a TCB for all scopes
subject to  US (FCC) Certifications!  Go to http://www.ckccertification.com
for more information.

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Orange County IEEE EMC Chapter Presentation

[Flinders, Randall]

Please join us Wednesday, March 20 for the Orange County IEEE EMC Society
meeting

Topic: Regulatory systems in Brazil and other Latin and South American
countries.

An overview of the Brazilian history and present process requirements for
Telecom Certification. The direction of Brazil's future requirements
will be presented. A copy of the Brazilian EMC standard will be
available at the meeting.
NCC has processes in all countries South of the US Border that
Require Certification for Telecom, EMC and Product Safety.
NCC in June 2001, was granted a license by Brazil to become an Official
Telecom Certification Agency, an Organization for Certification
Designate.


Speaker: Richard L. Swarz  Net Connection Corporation

Richard L. Swarz founded NCC eight years ago with the first
office in Mexico.  He will discuss the regulatory systems in Brazil and
other Latin and South American countries.
Net Connection Corporation
310 821-0700
310 574-9540 FAX
ncc1...@nccrc.com

CKC Laboratories in Brea
Located in Small Shopping Center

110 North Olinda Place
Brea, CA 92823
714-337-1133
Office: 714-993-6112


Wednesday, March 20, 2002
6:00 pm - Social Hour - Beverages Served
6:30 pm - Dinner Served
7:00 pm - Presentation Begins

MEETINGS ARE NOW FREE
FREE! for IEEE Members and Students with Valid Student ID Card
FREE! for non-IEEE Members


Reservations requested 
Robert Tozier at 714-337-1133 or  robert.toz...@ckc.com


Robert Tozier
Business Development Specialist
CKC Laboratories, Inc.
Direct 714-337-1133
Office 714-993-6112
Fax 714-993-0171
Toll-Free (800) 500-4EMC

http//: www.ckc.com
CKC Certifications Services has been designated as a TCB for all scopes
subject to  US (FCC) Certifications!  Go to http://www.ckccertification.com
for more information.


Posted by:

Randy Flinders
(Orange County Chapter Vice Chair)
Electromagnetic Compatibility Engineer
 
Emulex Corporation - We Network Storage   
3535 Harbor Blvd.
Costa Mesa, Ca. 92626
 
Direct:  (714) 513-8012 
Fax: (714) 513-8265 
Email:   randall.flind...@emulex.com 
Web:  
 
 


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RE: Orange County EMC Society Presentation

[Flinders, Randall]

CORRECTION!
 
January 24th is a THURSDAY, NOT a Wednesday as the original email indicated!
The Meeting is on Thursday, January 24th!  Please except my apologies for
the error.
 
- Randy Flinders

-Original Message-
From: Flinders, Randall 
Sent: Wednesday, January 16, 2002 11:50 AM
To: Emc-Pstc (E-mail)
Subject: Orange County EMC Society Presentation


Greetings EMC Professionals!
 
You are invited to the January 24 presentation of the Orange County IEEE EMC
Society technical presentation on Bluetooth!  The meetings are free and food
is served, so come on down and join us.  Specific Information on the
presentation follows:
 

---
Topic: Bluetooth - What is it and how do you test it?
A presentation introducing Bluetooth wireless technology. An informal
discussion that will center on answering the question: "What do I do
when my company has added Bluetooth capability to our products?" Topics
will include the Bluetooth Qualification Program with its novel test
regime and the FCC authorization of Bluetooth devices (unexpectedly
complex!).

Speaker: James Cunningham, 7 layers, Inc.
James is General Manager of 7 layers, Inc. in Irvine, California. Mr.
Cunningham was a European Competent Body for five years with RFI in
England and presented three papers in previous IEEE EMC Symposiums.
Currently, James is an active Bluetooth Qualification Body (BQB) having
personally qualified nearly 40 Bluetooth products.

At CKC Laboratories in Brea
Located in Small Shopping Center
110 North Olinda Place
Brea, CA 92823
714-337-1133
Office: 714-993-6112

Thursday , Jan. 24, 2001
6:00 pm - Social Hour - Beverages Served
6:30 pm - Sandwiches Served
7:00 pm - Presentation Begins
MEETINGS ARE NOW FREE
FREE! for IEEE Members and Students with Valid Student ID Card
FREE! for non-IEEE Members

Reservations requested by 10AM on Tuesday, January 23rd.

---


For more info or to RSVP, contact:
 
Robert Tozier
Chairman, Orange County Chapter
IEEE EMC Society
Direct 714-337-1133
Office 714-993-6112


Regards,
 
Randy Flinders
Vice-Chairman, Orange County Chapter
IEEE EMC Society
Direct:  (714) 513-8012 
Fax: (714) 513-8265 
Email:r.flind...@ieee.org <mailto:r.flind...@ieee.org> 
 
 
 

Orange County EMC Society Presentation

[Flinders, Randall]

Greetings EMC Professionals!
 
You are invited to the January 24 presentation of the Orange County IEEE EMC
Society technical presentation on Bluetooth!  The meetings are free and food
is served, so come on down and join us.  Specific Information on the
presentation follows:
 

---
Topic: Bluetooth - What is it and how do you test it?
A presentation introducing Bluetooth wireless technology. An informal
discussion that will center on answering the question: "What do I do
when my company has added Bluetooth capability to our products?" Topics
will include the Bluetooth Qualification Program with its novel test
regime and the FCC authorization of Bluetooth devices (unexpectedly
complex!).

Speaker: James Cunningham, 7 layers, Inc.
James is General Manager of 7 layers, Inc. in Irvine, California. Mr.
Cunningham was a European Competent Body for five years with RFI in
England and presented three papers in previous IEEE EMC Symposiums.
Currently, James is an active Bluetooth Qualification Body (BQB) having
personally qualified nearly 40 Bluetooth products.

At CKC Laboratories in Brea
Located in Small Shopping Center
110 North Olinda Place
Brea, CA 92823
714-337-1133
Office: 714-993-6112

Wednesday, Jan. 24, 2001
6:00 pm - Social Hour - Beverages Served
6:30 pm - Sandwiches Served
7:00 pm - Presentation Begins
MEETINGS ARE NOW FREE
FREE! for IEEE Members and Students with Valid Student ID Card
FREE! for non-IEEE Members

Reservations requested by 10AM on Tuesday, January 23rd.

---

For more info or to RSVP, contact:
 
Robert Tozier
Chairman, Orange County Chapter
IEEE EMC Society
Direct 714-337-1133
Office 714-993-6112


Regards,
 
Randy Flinders
Vice-Chairman, Orange County Chapter
IEEE EMC Society
Direct:  (714) 513-8012 
Fax: (714) 513-8265 
Email:r.flind...@ieee.org  
 
 
 

Korean EMC Requirements

[Flinders, Randall]

Hello EMC Gurus!
 
Could anyone please direct me to some good web information resources
pertaining to EMC Certification of ITE products in Korea?
 
Thanks!
 
Randy Flinders
Electromagnetic Compatibility Engineer
 
Emulex Corporation - We Network Storage   
3535 Harbor Blvd.
Costa Mesa, Ca. 92626
 
Direct:  (714) 513-8012 
Fax: (714) 513-8265 
Email:   randall.flind...@emulex.com  
Web:  http://www.emulex.com 
 
    
---
 
 

RE: Safety

[Flinders, Randall]

KC,

UL is holding a seminar in San Diego on UL 1950/60950.  For more
information, visit:

www.ul.com/seminars

Regards,
 
 
Randy Flinders
Electromagnetic Compatibility Engineer
Emulex Corporation - We Network Storage
3535 Harbor Blvd.
Costa Mesa, Ca. 92626
(714) 513-8012 Voice
(714) 513-8265 Fax
randall.flind...@emulex.com  
www.emulex.com  
---
 


-Original Message-
From: KC CHAN [PDD] [mailto:kcc...@hkpc.org]
Sent: Tuesday, July 31, 2001 5:38 PM
To: emc-p...@majordomo.ieee.org
Subject: Safety



Members

I am responsible for EMC stuff, but I need to know something about Safety.
Could anyone advises some good reference materials from the internet about
safety? such as basic concept, definitions, EN60065, EN60950 and UL.

Thank you
KC Chan


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Re: EMC Wall Charts

[Flinders, Randall]

Can someone point me to my Southern California Schaffner Rep?  I want
one of those posters so bad..

-- 
Randall Flinders
EMC Engineer
Emulex Corporation - We Network Storage
3535 Harbor Blvd.
Costa Mesa, Ca. 92626
(714) 513-8012 voice
(714) 513-8265 fax
randall.flind...@emulex.com<>

Re: HP 8546A calibration facility

[Flinders, Randall]

We have our 8546A calibrated at Excalibur Engineering.

Excalibur Engineering
11 Musick
Irvine, Ca. 92618-1638
949-454-6603
949-454-6642 fax
exsa...@excaliburengineering.com

Regards,

 
Randall Flinders
EMC Engineer
Emulex Corporation - We Network Storage
3535 Harbor Blvd.
Costa Mesa, Ca. 92626
(714) 513-8012 voice
(714) 513-8265 fax
randall.flind...@emulex.com<>

NAFTA Certification?

[Flinders, Randall]

Greetings all you EMC gurus!

One of my customers just requested information as to the status of our
product's NAFTA compliance as it applies to Mexico.  Anybody have
information on this?

Thanks!
-- 
Randall Flinders
EMC Engineer
Emulex Corporation - We Network Storage
3535 Harbor Blvd.
Costa Mesa, Ca. 92626
(714) 513-8012 voice
(714) 513-8265 fax
randall.flind...@emulex.com

Chairman
Orange County Chapter
IEEE EMC Society
r.flind...@ieee.org<>

Re: Calibration of test equipment

[Flinders, Randall]

Does this mean that a signal generator that is used for Radiated
Immunity testing should not be used to calibrate Pre-Amps and Cables? 
How about Antenna Calibration?  Can you use the same receiver you use on
the OATS to calibrate those?  I know this is a common practice with
Commercial Test Labs.  

Is there guidance as to what types of equipment can be used for both lab
use and for the calibration of other equipment?

michael.sundst...@nokia.com wrote:
> 
> I think there is a special requirement to keep the calibration equipment
> separate from the EMC equipment. In other words the calibration equipment
> can only be used for the calibration process and not for testing EMC.
> 
> > Michael Sundstrom
> > Product Test Technician EMC
> > Nokia Mobile Phones, Dallas PCC
> >
> > *   Email   michael.sundst...@nokia.com
> > %  Desk  (972) 374-1462
> > *Mobile  (817) 917-5021
> > * Fax  (972) 374-0901
> amateur call:  KB5UKT
> 
> ---
> This message is from the IEEE EMC Society Product Safety
> Technical Committee emc-pstc discussion list.
> 
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> 
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> 
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Taiwan Agent

[Flinders, Randall]

Greetings group!

I am preparing to obtain BSMI approval on one of our new products.  I
have been told by the local test lab that we are required to have an
importer or agent in Taiwan in order to accomplish this goal.  Is this
correct?

If it is correct, what criteria must this agent meet?  Can a distributor
serve this function?  Must they reside on Taiwan soil?

Also, can anyone recommend someone for the translation of user manuals?

Thanks!


Randy Flinders
EMC Engineer
Emulex Corporation - we network storage
randall.flind...@emulex.com
(714) 513-8012

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Re: FCC Part 15 Class B

[Flinders, Randall]

You can Self-Certify.  This is all described in FCC's CFR 47, Part
15.101.  To read the rules for yourself, go to:

http://www.access.gpo.gov/nara/cfr/waisidx_99/47cfr15_99.html

regards,



Randy Flinders
EMC Engineer
Emulex Corp.
r.flind...@ieee.org


Courtland Thomas wrote:
> 
> Hello Group,
> 
> I would like to know if it is permissible to self verify to Class B for ITE.
> I know it can be done for Class A, but I am not sure about Class B. The
> interesting thing is that I posed the question to a contact at the FCC and
> the answer I got was "No idea".
> 
> Courtland Thomas
> Patton Electronics
> 
> ---
> This message is from the IEEE EMC Society Product Safety
> Technical Committee emc-pstc discussion list.
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> 
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Re: Which Antenna?

[Flinders, Randall]

Mr. Allen,

I have had some experience with biconilog, log periodic, and biconical
antennas for both emissions and immunity testing.  I never had any
issues with the biconilog when used for immunity testing.  However,
after using the biconilog for emissions testing on a 3 meter OATS, I
went back to seperate antennas.  I found that the discreet antennas
offered better loss factors and a more linear calibration plot.  I also
found the biconilog to be VERY directional.  This made it more difficult
and tedious to ensure repeatable measurements with the biconilog.

Just my 2 cents.

Regards,


Randy Flinders
EMC Engineer
Emulex Corporation
randall.flind...@emulex.com

aka

Chairman
Orange County Chapter
IEEE EMC Society
r.flind...@ieee.org

"Tudor, Allen" wrote:
> 
> Greetings,
> 
> I am having a fully anechoic pre-compliance test chamber built.  By fully
> anechoic, I mean ferrite tiles will be installed on the floor as well as the
> walls and ceiling.  The inner dimensions of the chamber will be 24 feet long
> by 14 feet wide by 13 feet high.  The chamber will be used for radiated
> emissions as well as radiated immunity.  Radiated emissions testing will be
> from 30MHz to 1GHz.
> 
> I am looking at a biconilog antenna that can be used for emissions and
> immunity testing.  However; for emissions measurements, the salesman
> recommends that I use separate biconical and log-periodic antennas.  He says
> that if I use the biconilog antenna for emissions measurements, there will
> be some coupling to the ground plane when the antenna is in the vertical
> position.  However, this chamber will have ferrite on the floor, so I don't
> know if that is a valid argument.
> 
> Aside from the expense of two additional antennas, I have two conflicting
> concerns.
> 1. I would rather not have to work with more than one antenna if I don't
> have to due to down time and possible damage to an antenna.
> 2. On the flip side, I want to make sure that I have repeatable results,
> especially at the low end of the spectrum.
> 
> Any advice would be greatly appreciated.
> 
> ---
> This message is from the IEEE EMC Society Product Safety
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> 
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>  majord...@ieee.org
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> 
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Position Available - EMC Engineer

[Flinders, Randall]

Greetings EMC Professionals!

Emulex Corporation, the market leader in Fibre Channel Host Bus
Adapters, has a position available for an EMC Test Engineer.  Emulex is
located in Costa Mesa, California and offers a competitve compensation
package.  For more information on the position, check our web site at:

http://respond.webhire.com/emulex/jd45.html

Please email me your resume directly if you are interested.  You can
direct the email to:

randall.flind...@emulex.com

Regards,


Randy Flinders
EMC Engineer
Emulex Corporation
3535 Harbor Blvd.
Costa Mesa, Ca. 92626
714-513-8012 voice
714-513-8265 fax
randall.flind...@emulex.com
www.emulex.com

aka.

chairman
Orange County Chapter
IEEE EMC Society
r.flind...@ieee.org
www.emcs.org

<>

Power Line Voltages

[Flinders, Randall]

Greetings group!

I am looking for a resource, preferrably but not neccessarily on the
web, were I can get all of the power line voltages and frequencies for
every country.  This includes Europe, The Pac Rim, Autralia, Africa,
Middle East, etc

Can anyone direct me to this information?  Any help would be greatly
appreciated!

Regards,


Randy Flinders
EMC Engineer
Emulex Corp.
r.flind...@ieee.org
<>

Re: Horn Antenna

[Flinders, Randall]

Is anyone aware of any Tuned Horn sets that use multiple Horns to cover the
frequency Range?  I use a broadband Horn antenna for Radiated Emissions testing
and I am finding that as our products move in to higher frequency regions of the
spectrum, the Broadband Horn (1-18 GHz) offers too high of an AF.

Regards,

Randy Flinders
EMC Engineer
Emulex Corp.
(714) 513-8012
(714) 513-8265 Fax
randall.flind...@emulex.com

aka...

Chairman
Orange County Chapter
IEEE EMC Society
r.flind...@ieee.org

Zhong Chen wrote:

> Just a quick comment,
> the relationship between AF(dB/m) and G(dB) is
>
> AF(dB/m)=20*log(f_MHz)-G(dB)-29.79
>
> As you can see, if you have an antenna with a constant gain, it is a
> physical law that the AF goes up with frequency.  Now, of course you can
> design an antenna with a extremely large gain (small AF).  But, for most
> cases, it is not desired, because the higher the gain, the narrower the
> beam.  For immunity test, you really want a moderate gain antenna to cover a
> reasonable area.  EMCO 3115 has a gain between about 7 and 14 dBi accross
> the band.  I do not know if you really want the gain to go any higher than
> that.
>
> Zhong Chen
> > -Original Message-
> > From: Price, Ed [SMTP:ed.pr...@cubic.com]
> > Sent: Tuesday, March 07, 2000 9:03 AM
> > To:   emc-p...@ieee.org
> > Subject:  RE: Horn Antenna
> >
> >
> > Derek:
> >
> > Excellent comments on horns from Robert.
> >
> > I have a couple of EMCO 3115 Double-ridged horns. This design sacrifices
> > efficiency for bandwidth, which means time saved not swapping antennas.
> > Although the design is rated to 18 GHz, I found the antenna factor became
> > intolerably high (for my needs) above around 14 GHz.
> >
> > So I built a horn for the 12-18 GHz band. The easy technique for this is
> > to
> > use a section of waveguide, cut off square at one end and flanged at the
> > other. Just use sheet metal (brass) to extend a flared horn out from the
> > cutoff end. Use fairly heavy gauge metal sheet, and you can either solder
> > or
> > braze all the seams. Now, just use a coax to waveguide adapter to make
> > your
> > connection. There are designs available for flare angle and length of the
> > horn everywhere from the ARRL Antenna Handbook to Reference Data for Radio
> > Engineers to the classic textbooks.
> >
> > Most of us already have octave band amplifiers, so it's not that much
> > extra
> > hassle to change an antenna along with the amplifier for each band.
> >
> > If you really need to squeeze out every dB of performance from your
> > immunity
> > setup, then consider mounting the antenna directly off the output
> > connector
> > of your TWT amplifier. Zero cable loss. Of course, it's nice then to have
> > a
> > "stupid" amplifier, that is, one which has nothing but a TWT tube and a
> > brute force power supply. All those fancy microprocessor controls and IO
> > are
> > likely to prove susceptible to the RF field. You can use a small pre-amp
> > to
> > boost the signal on the relatively long amplifier input cable, if you need
> > to. Also, a long, low-loss, low-power coax is much cheaper than a long,
> > low-loss, high power coax. And very much cheaper than a long flex
> > waveguide.
> >
> > There's another benefit to using a waveguide to coax adapter to feed a
> > horn.
> > If you do manage to damage the system, through arcing from high SWR (like
> > maybe the antenna falls over and lands throat down on the enclosure
> > floor),
> > the adapter is easily replaceable. Also, rarely, you will encounter a
> > badly
> > assembled Type N male coax cable connector, with the male center pin
> > sticking out too far. It's much better to damage the female connector on a
> > replaceable adapter, than a female connector built into the antenna.
> > (Let's
> > all check our coax cables today. )
> >
> > Now wait a minute! How big was that enclosure you described? One meter by
> > 0.7 meters?! That sounds more like a waveguide than a chamber!
> >
> > Regards,
> >
> > Ed
> >
> >
> > :-):-):-):-):-):-):-):-):-):-):-):-):-):-):-):-):-):-):-):-):-):-):-):-):-
> > )
> > Ed Price
> > ed.pr...@cubic.com
> > Electromagnetic Compatibility Lab
> > Cubic Defense Systems
> > San Diego, CA.  USA
> > 858-505-2780 (Voice)
> > 858-505-1583 (Fax)
> > Military & Avionics EMC Services Is Our Specialty
> > Shake-Bake-Shock - Metrology - Reliability Analysis
> > :-):-):-):-):-):-):-):-):-):-):-):-):-):-):-):-):-):-):-):-):-):-):-):-):-
> > )
> >
> > > -Original Message-
> > > From:   Robert Macy [SMTP:m...@california.com]
> > > Sent:   Monday, March 06, 2000 2:30 PM
> > > To: lfresea...@aol.com; emc-p...@ieee.org
> > > Subject:Re: Horn Antenna
> > >
> > >
> > > Derek,
> > >
> > > The horn antenna is an impedance matching device for getting between 50
> > > ohm
> > > lines and 377 ohm free space while launching TEM mode wave fronts.
> > >
> > > You could use the commercially available one which has an awful antenna
> > > factor.  It's

RE: EMC Circuit Board Design

[Flinders, Randall]

Just a side note that Mr. Montrose will be speaking at the Feb. 10th meeting of 
the Orange County Chapter of the IEEE EMC Society.  If you would like to attend 
the presentation, contact me at the number shown below.

Regards,


Randy Flinders
Chairman
Orange County Chapter
IEEE EMC Society
r.flind...@ieee.org
(714) 513-8012
(714) 513-8265 Fax

Note: The opinions expressed herein are personal and in no way represent the 
position of the IEEE, The EMC Society, or my employer.

-Original Message-
From: owner-emc-p...@ieee.org [mailto:owner-emc-p...@ieee.org]On Behalf
Of teck...@apcc.com
Sent: Friday, January 21, 2000 6:28 AM
To: rehel...@mmm.com
Cc: emc-p...@majordomo.ieee.org
Subject: Re: EMC Circuit Board Design



There are a number of good books available on the subject.  There are two
that I would recommend to start with.

Printed Circuit Board Design Techniques for EMC Compliance
Mark I. Montrose
IEEE Press
ISBN 0-7803-1131-0
IEEE Order Number PC5595

Noise Reduction Techniques in Electronic Systems
Henry W. Ott
John Wiley and Sons
ISBN 0-471-85068-3

The first book is a very good reference on PCB design.  It covers most
aspects of design for EMC compliance including layer stack-up, grounding,
decoupling, clock circuits and ESD.

The second book concentrates more on system design.  It has some
information on circuit board layout, but it does not concentrate on the
subject.  It does give a good description of emissions and susceptibility
issues.  If you are looking to gain a good understanding of the basics of
electrical noise, this is the book to start with.

Ted Eckert
Regulatory Compliance Engineer
American Power Conversion Corporation
teck...@apcc.com

The items contained in this e-mail reflect the personal opinions of the
writer and are only provided for the assistance of the reader.  The writer
is not speaking in an official capacity for APC nor representing APC$B!G(Bs
official position on any matter.



Please respond to rehel...@mmm.com

To:   emc-p...@majordomo.ieee.org
cc:(bcc: Ted Eckert/SDD/NAM/APCC)
From: rehel...@mmm.com on 01/21/2000 06:47 AM
Subject:  EMC Circuit Board Design



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Harmonics Testing

[Flinders, Randall]

Greetings EMC Professionals!

I have a quick question regarding Harmonics testing to EN61000-3-3.  We have an 
ITE product with a switching power supply.  The product uses about 38 watts 
input power.  According to the standard, which scenario applies?

Scenario #1

The unit does not need to be tested, because it falls below the Class D Input 
power range of 75(50)W to 600W.  Section 7.4 of the standard states that "...No 
limits apply for equipment with an active input power up to and including 
75W"  

Scenario #2

Since the unit does not use more than 75W (or more than 50W for that matter), 
the unit then defaults to the Class A requirements and therefor must meet the 
less stringent Class A limits.  Section 5 of EN61000-3-3 states: "  Class A: 
Balanced 3-phase equipment AND ALL OTHER EQUIPMENT, except that stated [in 
Classes B-D]..."

So I guess my question is this: when an ITE product with a switching power 
supply uses less than 50W (75w), does it become an exempt Class D Device, or 
doe sit become a Class A device?  

Your insights would be appreciated.


Regards,


Randy Flinders
Chairman
Orange County Chapter
IEEE EMC Society
r.flind...@ieee.org
(714) 513-8012
(714) 513-8265 Fax

Note: The opinions expressed herein are personal and in no way represent the 
position of the IEEE, The EMC Society, or my employer.<>

UMR Course information

[Flinders, Randall]

Dave,

I paid $1500 for the 40 Hr. video course, and $1800 for the lab course.  If 
additional people want to take the video course and use the same tapes as 
the first person, they are only an additional $400.  These numbers are from 
last year and may have changed.  for more information, check out:

http://www.umr.edu/~conted/prog8780.html

(for the video course)

and...

http://www.umr.edu/~conted/prog8436.html

(for the lab course.)

Or, you can contact Buddy Poe, Continuing Education at UMR:
(573) 341-6061
bud...@umr.edu



Sincerely,


Randy Flinders
Chairman
Orange County Chapter
IEEE EMC Society
(714) 513-8012 voice
(714) 513-8265 fax
r.flind...@ieee.org

Note: The opinions expressed herein represent my personal views and in no 
way represent the position or opinions of the IEEE, The EMC Society, or my 
employer.

--
From:   Dave Wilson
Sent:   Friday, December 10, 1999 9:50 AM
To: randall.flind...@emulex.com
Subject:RE: EMC education courses

Randall,

Regarding the course you recommended, can I ask the cost?

Dave Wilson
EMC Manager
BABT Product Service
Santa Clara
-- Original Text --

From: "Flinders, Randall" , on 12/10/99 9:47 
AM:


Jeff,

I recently took the UMR EMC Principles Lab and 40 Hr. Video course, and
highly recommend it.  While the Video course was (is - I am still finishing 
it up) great, the lab course was definitely worth the week stay in Rolla.
 (Bring a book of crosswords - there is not a whole lot to do in Rolla!)
 The hands on Lab course was very well put together, I got allot out of it. 
 Dr. Van Doren and Todd Hubing are excellent instructors, and the expertise 
of the graduate students who helped with the experiment and presentations
was very impressive.  I have taken many EMC related classes and seminars,
and the UMR course was by far the best.  If you do make it to Rolla for the 
lab course, be sure to tour their nuclear reactor!

Just my $.02


Sincerely,


Randy Flinders
Chairman
Orange County Chapter
IEEE EMC Society
(714) 513-8012 voice
(714) 513-8265 fax
r.flind...@ieee.org

Note: The opinions expressed herein represent my personal views and in no
way represent the position or opinions of the IEEE, The EMC Society, or my
employer.



--
From:   Bailey, Jeff
Sent:   Friday, December 10, 1999 7:21 AM
To: 'emc-pstc'
Subject:EMC education courses


Greetings all,

I am looking into some further training to help me in my career in EMC and
would like your
input or help if you can offer any.  I don't want to waste time or money
taking any courses
that do not live up to their claims so I am hoping that some of you out
there have done some
training and can offer me feedback as to how valuable the courses you took
really were.

I looking more into the technical type courses to help me troubleshoot and
offer re-design input
to bring non-compliant products into compliance, mainly in the area of
PWB's.

Please help!  :-)

One course I have found that looks pretty decent is the EMC Principles
Video
Course plus the
40 lab session offered by the University of Missouri Rolla.  Can anyone
comment on this course
from experience?  (or any other course taken, good or bad I'd be interested
in your views)

Thank you all for you feedback!

Sincerely,

Jeff Bailey
EMC Technologist
SST - A Division of Woodhead Canada Ltd.
Phone: (519) 725 5136 ext. 363
Fax: (519) 725 1515
Email: jbai...@sstech.on.ca
Web: www.sstech.on.ca


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<>

RE: EMC education courses

[Flinders, Randall]

Jeff,

I recently took the UMR EMC Principles Lab and 40 Hr. Video course, and 
highly recommend it.  While the Video course was (is - I am still finishing 
it up) great, the lab course was definitely worth the week stay in Rolla. 
 (Bring a book of crosswords - there is not a whole lot to do in Rolla!) 
 The hands on Lab course was very well put together, I got allot out of it. 
 Dr. Van Doren and Todd Hubing are excellent instructors, and the expertise 
of the graduate students who helped with the experiment and presentations 
was very impressive.  I have taken many EMC related classes and seminars, 
and the UMR course was by far the best.  If you do make it to Rolla for the 
lab course, be sure to tour their nuclear reactor!

Just my $.02


Sincerely,


Randy Flinders
Chairman
Orange County Chapter
IEEE EMC Society
(714) 513-8012 voice
(714) 513-8265 fax
r.flind...@ieee.org

Note: The opinions expressed herein represent my personal views and in no 
way represent the position or opinions of the IEEE, The EMC Society, or my 
employer.



--
From:   Bailey, Jeff
Sent:   Friday, December 10, 1999 7:21 AM
To: 'emc-pstc'
Subject:EMC education courses


Greetings all,

I am looking into some further training to help me in my career in EMC and
would like your
input or help if you can offer any.  I don't want to waste time or money
taking any courses
that do not live up to their claims so I am hoping that some of you out
there have done some
training and can offer me feedback as to how valuable the courses you took
really were.

I looking more into the technical type courses to help me troubleshoot and
offer re-design input
to bring non-compliant products into compliance, mainly in the area of
PWB's.

Please help!  :-)

One course I have found that looks pretty decent is the EMC Principles 
Video
Course plus the
40 lab session offered by the University of Missouri Rolla.  Can anyone
comment on this course
from experience?  (or any other course taken, good or bad I'd be interested
in your views)

Thank you all for you feedback!

Sincerely,

Jeff Bailey
EMC Technologist
SST - A Division of Woodhead Canada Ltd.
Phone: (519) 725 5136 ext. 363
Fax: (519) 725 1515
Email: jbai...@sstech.on.ca
Web: www.sstech.on.ca


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RE: CASSPER

[Flinders, Randall]

Allen and esteemed colleagues,

CASSPER demonstrated the system in question at June 1999 meeting of the 
Orange County Chapter of the IEEE EMC Society.  The product was set up with 
one antenna in the conference room and another outside on the roof.  (To 
sense the ambients.)

As stated in your earlier email, CASSPER does claim ambient cancellation 
technology.  As many of us know, the idea of simply doing an A-B comparison 
to cancel ambients does not work.  Many large instrumentation manufacturers 
have attempted to insert this capability into their systems without any 
real world success.  The CASSPER system, however, appears to be a different 
animal.  Rather than doing an A-B type measurement, it utilizes DSP 
Technology to compare the signals.  Once compared, it claims to be able to 
remove the ambient signal without any signal loss of the suspect signal, 
even if the two are at the EXACT SAME FREQUENCY!  It's a little hard to 
swallow, but the demonstration was very impressive.  During the demo, the 
device did in fact cancel out ambients, and rather well I might add.

The response from the audience was very good.  Even the old die-hard EMI 
guys appeared to be impressed with the CASSPER Technology.  The only real 
minus that came up at the meeting was that the unit did not have a CISPR 
16-1 compliant front end, and therefore could only be used for 
pre-compliance measurements.  However, CASSPER did indicate that a 
compliant front end was in the works at the time (back in June of this 
year), so you should check with CASSPER about the progress of the 
receiver's new front end.

Also, keep in mind that we witnessed a 45 minute demonstration, so take it 
for what it's worth.  If anyone had a chance to put one of these things on 
an OATS and compare it to a traditional receiver / spectrum analyzer, I 
would be interested in hearing the results.

Just my $ 0.02.


Sincerely,

Randall T. Flinders
EMC Engineer
Emulex Corporation
(714) 513-8012 voice
(714) 513-8265 fax
randall.flind...@ieee.org
__   __
__\ /__
__/ \__
E  M  U  L  E  X

aka..

Chairman
Orange County Chapter
IEEE EMC Society
r.flind...@ieee.org

--
From:   Allen Tudor
Sent:   Monday, October 11, 1999 12:02 PM
To: emc-p...@majordomo.ieee.org
Subject:CASSPER


Greetings group,

Has anyone actually used the CASSPER ambient cancellation system? 
 According to the manufacturer, the receiver accepts inputs from two 
antenna; one placed at 3 or 10 meters from the EUT, and the second placed 
in the background (75-100 feet away).  The receiver compares the input from 
both antenna and subtracts that portion of the EUT's signal that is 
attributed to the ambient.  The end result is measurements taken in a 
"virtual chamber" environment.

To make a long story short, the good people at CASSPER told me on more than 
one occasion that they would come out to my facility and give a 
demonstration of their product.  However, after several follow-up calls 
over the coarse of several months, I have yet to see them.

I am beginning to wonder if their product works as claimed.  If anyone has 
any experience with the product, I would love to hear from you.

Thanks.

Allen Tudor, Compliance Engineer
PairGain Technologies  tel:  (919)875-3382
6531 Meridien Drive fax: (919)876-1817
Raleigh, NC  27616   email: 
 allen_tu...@pairgain.com



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RE: Schaffner ESD gun Calibration

[Flinders, Randall]

In my previous e-mail I had indicated that I had trouble getting a quote 
from Schaffner for calibrating my ESD gun.  Well, Schaffner has contacted 
me,  and was very responsive in taking care of my needs.   They are 
expediting the calibration of my equipment at no extra charge, and they 
appear to be taking specific steps to ensure that customer inquiries will 
not fall through the cracks again.  I was very satisfied with their staff's 
professionalism and courtesy.

Kudos to the folks at Schaffner for their efforts to maintain customer 
satisfaction.  We all know that things can't go perfectly all the time, but 
it was the willingness to respond to issues when they arise and make sure 
that the customer's needs get met that impressed me.

So, it ended up that I did not need to find another vendor.  But, I would 
like to thank everyone who posted information on alternate vendors and I 
will be keeping the information on file for future use.

Sincerely,

Randall T. Flinders
EMC Engineer
Emulex Corporation
(714) 513-8012 voice
(714) 513-8265 fax
randall.flind...@ieee.org
__   __
__\ /__
__/ \__
E  M  U  L  E  X

aka..

Chairman
Orange County Chapter
IEEE EMC Society
r.flind...@ieee.org

--
From:   Flinders, Randall
Sent:   Tuesday, October 05, 1999 2:36 PM
To: 'emc-pstc'
Subject:Schaffner ESD gun Calibration

Greetings EMC Professionals -

I was wondering if anyone out there in complianceland has info on any 
calibration vendors who provide calibration services for a Schaffner 
NSG-435 ESD Gun.  My numerous attempts at getting a quote from Schaffner 
have been unsuccessful and I really need to get this thing calibrated 
before my next QA audit.

Any leads or information would be appreciated!

Thanks!


Sincerely,

Randall T. Flinders
EMC Engineer
Emulex Corporation
(714) 513-8012 voice
(714) 513-8265 fax
randall.flind...@ieee.org
__   __
__\ /__
__/ \__
E  M  U  L  E  X

aka..

Chairman
Orange County Chapter
IEEE EMC Society
r.flind...@ieee.org
<>

Schaffner ESD gun Calibration

[Flinders, Randall]

Greetings EMC Professionals -

I was wondering if anyone out there in complianceland has info on any 
calibration vendors who provide calibration services for a Schaffner 
NSG-435 ESD Gun.  My numerous attempts at getting a quote from Schaffner 
have been unsuccessful and I really need to get this thing calibrated 
before my next QA audit.

Any leads or information would be appreciated!

Thanks!


Sincerely,

Randall T. Flinders
EMC Engineer
Emulex Corporation
(714) 513-8012 voice
(714) 513-8265 fax
randall.flind...@ieee.org
__   __
__\ /__
__/ \__
E  M  U  L  E  X

aka..

Chairman
Orange County Chapter
IEEE EMC Society
r.flind...@ieee.org<>

RE: antenna tripods

[Flinders, Randall]

Check with Com-Power at www.com-power.com

They have resonably priced tripods.


Sincerely,

Randall T. Flinders
EMC Engineer
Emulex Corporation
(714) 513-8012 voice
(714) 513-8265 fax
randall.flind...@ieee.org
__   __
__\ /__
__/ \__
E  M  U  L  E  X

aka..

Chairman
Orange County Chapter
IEEE EMC Society
r.flind...@ieee.org

--
From:   Colgan, Chris
Sent:   Friday, September 17, 1999 7:53 AM
To: 'Emc-Pstc' (E-mail)
Subject:antenna tripods


Hi group

Does anyone know of a reasonably priced tripod or stand that will
accommodate an EMCO 3141 antenna?  The EMCO stand (6-TR) costs ?1400!

Have a good weekend

Chris Colgan
EMC & Safety
TAG McLaren Audio Ltd

mailto:chris.col...@tagmclarenaudio.com

=
Authorised on 09/17/99 at 15:54:19; code 3745344141AEACA2.
The contents of this E-mail are confidential and for the exclusive use of 
the intended recipient.
If you receive this E-mail in error, please delete it from your system 
immediately and notify us either by E-mail, telephone or fax. You should 
not copy, forward or otherwise disclose the content of the E-mail.

TAG McLaren Audio Ltd, The Summit, 11 Latham Road
Huntingdon, Cambs, PE18 6ZU
Telephone : 01480 415600 (+44 1480 415600)
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RE: spectrum analyzer/receiver for pre-compliance and diagnostic test

[Flinders, Randall]

I have had good experiences using the HP 859X series portable EMC analyzers.  
We have an 8593EM which can take measurements up to 18 GHz.  


Sincerely,

Randall T. Flinders
EMC Engineer
Emulex Corporation
(714) 513-8012 voice
(714) 513-8265 fax
randall.flind...@ieee.org
__   __
__\ /__
__/ \__
E  M  U  L  E  X

aka..

Chairman
Orange County Chapter
IEEE EMC Society
r.flind...@ieee.org

--
From:   Qu Pingyu
Sent:   Friday, September 17, 1999 1:17 AM
To: 'emc'
Subject:spectrum analyzer/receiver for pre-compiance and diagnostic 
testi   ng


Hi! Group:

We want to buy a spectrum analyzer or EMI receiver for our
pre-compliance/diagnostic EMI testing (both conducted and radiated). We want
something cheap and  cover a wide frequency range. Do you guys have any
specific recommendations ? Recently I found one of HP's new product called
EMI analyzer E 7400 series. Anyone have experience with this instrument ?
Any comments ?

Thanks in advance.

Best Regards

Qu Pingyu


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EMCFest '99!

[Flinders, Randall]

Greetings EMC Professionals!

The Orange County Chapter of the IEEE EMC Society proudly presents "EMC 
Fest '99", a Colloquium and Exhibition on "Design for EMC" and "EMC 
Troubleshooting Techniques".

The festivities will be presented on October 4th at the DoubleTree Hotel in 
Costa Mesa, California.  Tutorials and Demos will cover:

* EMC Standards Update
* Inductance and EMC
* Signal Integrity and EMI
* EMC Troubleshooting Techniques
* Advanced EMC Issues

The event will feature the following industry leading EMC speakers:

* Dennis Ward of CKC Labs, Inc.
* Lee Hill of Silent Solutions
* Howard W. Johnson of Signal Consulting, Inc.
* Daryl Gerke of Kimmel Gerke Associates

For the nominal fee of $150  (Late registration fee has been waved), 
registrants receive access to a  full day of tutorials and demonstrations, 
an exhibit hall where EMC vendors will be displaying the latest in EMC 
design, testing, and debugging solutions, along with complementary 
continental breakfast, lunch, and a dinner/ reception.  A copy of the 
Colloquium record will be provided with each registration.  Drawings will 
be held for cool prizes - so don't miss it!

There is still time to register!  The registration deadline has been moved 
out to September 22nd to allow for more seats to be filled!  There are 
still plenty of seats available, grab yours now!  If you happen to miss the 
deadline - not to worry!  The Late Registration fee has been waved, so the 
price is still $150.00 - even if you pay at the door!  If you plan on 
paying at the door, please call and let us know you are planning on 
attending, so we can plan the event accordingly.

Specifics of the program outline and fee schedule are shown below.  For 
registration information, or a copy of the advance program, please contact 
the chapter chairman, Randy Flinders, at (714) 513-8012 or by email at 
r.flind...@ieee.org.

---
Program Outline:
October 4, 1999
---

7:30-8:30 AM
Registration, Exhibits, and Breakfast

8:30-9:30 AM
Overview of EMC Requirements
Dennis Ward, CKC Labs

9:30-10:30AM
Inductance and Radiated EMI in PC Boards And Cables
Lee Hill, Silent Solutions

10:30-11:00
Break / Exhibits

11:00-Noon
Inductance and Radiated EMI in PC Boards And Cables - cont.
Lee Hill, Silent Solutions

Noon-1:00
Complementary Lunch / Exhibits

1:00-2:30
Signal Integrity and EMI in High Speed Digital Designs
Howard W. Johnson, Signal Consulting Inc.

2:30-3:00
Break/Exhibits

3:00-5:00
EMC Troubleshooting Techniques
Emissions and Immunity Solutions
Daryl Gerke, Kimmel Gerke Associates

5:00-6:30
Demonstrations, Exhibits, Reception/Dinner
and Prize drawings.

---
COST SCHEDULE
---

IEEE Members, registered by 9/22/99
$150.00

IEEE Members at the Door on 10/4/99
$175.00 Now reduced to $150.00!

Non-IEEE Member additional charge
$25.00

Full time students w/ student ID registered by 9/22/99
$75.00

Colloquium Record, with advance registration
FREE

Colloquium Record, additional copies ordered by 9/22/99
$25.00

Colloquium Record, additional copies on 10/4/99
$25.00 - Subject to availability

--
Sincerely,

Randall T. Flinders
Chairman
Orange County Chapter
IEEE EMC Society
r.flind...@ieee.org
714-513-8012 voice
714-513-8265 fax


<>

EMCFest '99!

[Flinders, Randall]

Greetings EMC Professionals!

The Orange County Chapter of the IEEE EMC Society proudly presents "EMC 
Fest '99", a Colloquium and Exhibition on "Design for EMC" and "EMC 
Troubleshooting Techniques".

The festivities will be presented on October 4th at the DoubleTree Hotel in 
Costa Mesa, California.  Tutorials and Demos will cover:

* EMC Standards Update
* Inductance and EMC
* Signal Integrity and EMI
* EMC Troubleshooting Techniques
* Advanced EMC Issues

The event will feature the following industry leading EMC speakers:

* Dennis Ward of CKC Labs, Inc.
* Lee Hill of Silent Solutions
* Howard W. Johnson of Signal Consulting, Inc.
* Daryl Gerke of Kimmel Gerke Associates

For the nominal fee of $150  (IEEE Members, pre-registered), registrants 
receive access to a  full day of tutorials and demonstrations, an exhibit 
hall where EMC vendors will be displaying the latest in EMC design, 
testing, and debugging solutions, along with complementary continental 
breakfast, lunch, and a dinner/ reception.  A copy of the Colloquium record 
will be provided with each registration.  Drawings will be held for cool 
prizes - so don't miss it!

There is still time to register!  The registration deadline has been moved 
out to September 22nd to allow for more seats to be filled!  There are 
still plenty of seats available, grab yours now!

Specifics of the program outline and fee schedule are shown below.  For 
registration information, or a copy of the advance program, please contact 
the chapter chairman, Randy Flinders, at (714) 513-8012 or by email at 
r.flind...@ieee.org.

---
Program Outline:
October 4, 1999
---

7:30-8:30 AM
Registration, Exhibits, and Breakfast

8:30-9:30 AM
Overview of EMC Requirements
Dennis Ward, CKC Labs

9:30-10:30AM
Inductance and Radiated EMI in PC Boards And Cables
Lee Hill, Silent Solutions

10:30-11:00
Break / Exhibits

11:00-Noon
Inductance and Radiated EMI in PC Boards And Cables - cont.
Lee Hill, Silent Solutions

Noon-1:00
Complementary Lunch / Exhibits

1:00-2:30
Signal Integrity and EMI in High Speed Digital Designs
Howard W. Johnson, Signal Consulting Inc.

2:30-3:00
Break/Exhibits

3:00-5:00
EMC Troubleshooting Techniques
Emissions and Immunity Solutions
Daryl Gerke, Kimmel Gerke Associates

5:00-6:30
Demonstrations, Exhibits, Reception/Dinner
and Prize drawings.

---
COST SCHEDULE
---

IEEE Members, registered by 9/22/99
$150.00

IEEE Members at the Door on 10/4/99
$175.00

Non-IEEE Member additional charge
$25.00

Full time students w/ student ID registered by 9/22/99
$75.00

Colloquium Record, with advance registration
FREE

Colloquium Record, additional copies ordered by 9/22/99
$25.00

Colloquium Record, additional copies on 10/4/99
$25.00 - Subject to availability

--
Sincerely,

Randall T. Flinders
Chairman
Orange County Chapter
IEEE EMC Society
r.flind...@ieee.org
714-513-8012 voice
714-513-8265 fax

<>

RE: EN50082-1:1997 & EN55024

[Flinders, Randall]

Jim,

Here at Emulex we also start at the lowest test level and slowly work our 
way up.  In my time working at a commercial test lab, I have seen several 
cases where a product could fail ESD testing at 6 kV but pass at 8 kV.  We 
step through all of the levels as required by the test procedure to avoid 
this "window" effect.  In addition, doing the test in this manner allows 
the test personnel to easily determine the "threshold" of a non-compliant 
unit.
--
Sincerely,

Randall T. Flinders
EMC Engineer
Emulex Network Systems
V: (714) 513-8012
F: (714) 513-8265
randall.flind...@emulex.com
__   __
__\ /__
__/ \__
E  M  U  L  E  X

Chairman
Orange County Chapter
IEEE EMC Society
r.flind...@ieee.org



--
From:   Jim Hulbert
Sent:   Thursday, August 19, 1999 7:07 AM
To: emc-p...@ieee.org
Subject:EN50082-1:1997 & EN55024




Immunity test standards EN50082-1:1997 and EN 55024 call out the basic 
standards
EN61000-4-2 and EN61000-4-5  for ESD and Surge.

EN61000-4-2, Section 5 starts out "The preferential range of test levels 
for the
ESD test is given in table 1.  Testing shall also be satisfied at the lower
levels given in table 1."   EN61000-4-5, Section 5 contains similar 
wording.
This is how we perform our compliance tests.   We start at the lowest test
voltage levels from the respective tables and step up to the test levels 
called
out in EN50082-1/ EN55024 (or higher, depending on our own in-house product
spec.)

However, I have noticed that some test labs go straight to the levels 
called out
in EN 50082-1/EN55024 and skip testing at the lower levels.  I believe this
approach is incorrect because it does not conform to the requirements of 
the
basic standard and is simply not a complete test.   As explained in 
EN61000-4-5,
the non-linear current-voltage characteristics of the equipment under test
should be considered and the test voltage should therefore be increased by 
steps
up to the test level specified in the product standard or test plan.   The 
same
rationale applies to ESD testing where current-voltage characteristics are 
also
non-linear.

How do others approach these tests?  Are we adding unnecessary test time by
starting at lower test voltages and stepping our way up or are the test 
labs
that go straight to the maximum test levels overlooking an important aspect 
of
the testing?

Jim Hulbert
Senior Engineer-EMC
Pitney Bowes



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RE: Posters

[Flinders, Randall]

Omega provided me with a United States Frequency allocation chart which I 
have hanging up in my open area test site lab area.  The poster is 
colorful, draws attention from everyone, and is informative.  Try 
www.omega.com, and click on "free literature"  for more info.
--
Sincerely,

Randall T. Flinders
EMC Engineer
Emulex Network Systems
V: (714) 513-8012
F: (714) 513-8265
randall.flind...@emulex.com
__   __
__\ /__
__/ \__
E  M  U  L  E  X

Chairman
Orange County Chapter
IEEE EMC Society
r.flind...@ieee.org



--
From:   Davis, Mike
Sent:   Friday, August 13, 1999 6:33 AM
To: EMC-PSTC Regulatory E-Mail (E-mail)
Subject:Posters

<>
I have an interest in knowing where to get EMI/EMC/Safety posters to hang 
up in and around my office. Does anyone of you know of what posters are 
available and from whom they may be ordered. I presently have two 
informative posters hanging on the walls of my office as follows:

"The CHASE guide to EMISSIONS & IMMUNITY"; Chase EMC, Inc., 230 Route 206, 
Building No.2, Flanders, New Jersey 07836, Tel 201 252-8001.

"USA Frequency Allocations 500kHz to 4GHz"; Fair-rite Products Corp., One 
Commercial Row, Wallkill, NY 12589-0288.

The information listed on these two poster are ferry useful as a quick 
reference. Some of you may have these posted already, because I have seen 
them in many test labs that I have used in the past.  Thanks in advance.


Regards,

Michael S. Davis
Compliance Engineer
ADC Broadband Communications
203 630-5788
mike_da...@adc.com




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RE: emc compliance

[Flinders, Randall]

While working at an independent test lab, I came across a similar 
situation.  The maker of the Video Adapter we were testing would not come 
into compliance without the use of an external ferrite.  The manufacturer 
could not supply the ferrite on a cable, because the user could use any 
monitor.  We asked the FCC for advice (This was before CE-Mark), and they 
told us that the unit must be shipped as configured during the test.  The 
manufacturer of the product was able to ship the product with a clamp-on 
ferrite, and had to include instructions in the user manual on how to 
install the ferrite.

My take on your situation is that the unit would not be considered 
compliant if it were shipped without the ferrite.  The user may not be 
technically versed enough to understand why to use a ferrite, which type of 
ferrite to use, or how to correctly install it.  When applying the CE-Mark, 
the importer (or manufacturer) is stating the unit, as shipped, complies 
with all applicable directives, including the EMC Directive.  The only way 
to get it through in my humble opinion, (take it for what it is worth) is 
to ship the ferrite with the unit and provide detailed user instructions on 
how to install it.
--
Sincerely,

Randall T. Flinders
EMC Engineer
Emulex Network Systems
V: (714) 513-8012
F: (714) 513-8265
randall.flind...@emulex.com
__   __
__\ /__
__/ \__
E  M  U  L  E  X

Chairman
Orange County Chapter
IEEE EMC Society
r.flind...@ieee.org



--
From:   lisa_cef...@mksinst.com
Sent:   Friday, June 25, 1999 12:36 PM
To: emc-p...@majordomo.ieee.org
Subject:emc compliance




Here's a question  If you have a product that, at one particular 
frequency
during radiated RF, you simply cannot get to pass the requirements of the
relative CE standard without putting an external ferrite on the cable, is 
it
"legal" , to still mark it, provided you inform your customers via the
declaration of conformity or in the manual etc., that they could experience
problems at such and such frequencies and if they do, to use a ferrite? 
 (boy,
that was a mouthful).  Faced with a redesign or a statement, the words 
would be
the easier route to take, since in this case, the customer could probably 
never
see the problem frequency range.   Comments?

thank you for any advise,

Lisa



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RE: Take my Shield Room, Please!

[Flinders, Randall]

The shield room in question has been promised to Desmond Frasier of Rhein 
Tech Labs.  Should Mr. Frasier decide not to take the shield room, I will 
contact those of you who also expressed interest in it.

--
Sincerely,

Randall T. Flinders
EMC Engineer
Emulex Network Systems
V: (714) 513-8012
F: (714) 513-8265
randall.flind...@emulex.com
__   __
__\ /__
__/ \__
E  M  U  L  E  X

Chairman
Orange County Chapter
IEEE EMC Society
r.flind...@ieee.org



--
From:   Flinders, Randall
Sent:   Wednesday, May 05, 1999 4:57 PM
To: 'emc-pstc'
Subject:Take my Shield Room, Please!

Greetings Compliance Professionals!

We happen to have a shield room we recently dismantled available to anyone 
who wants to come pick the thing up.  It is a single-walled, steel room 
with a standard size door.  The measurements of the chamber are 8 feet high 
by 12 feet wide by 16 feet long.  It is designed in such a way that it 
would need substantial modifications if you were to try and hang absorbers 
on the ceiling and/or walls.  The manufacturer of the chamber is unknown. 
 It is currently dismantled and stacked on a pallet in our shipping area.

Anyone interested in acquiring the chamber should contact me at the phone 
number / e-mail shown below.
--
Sincerely,

Randall T. Flinders
EMC Engineer
Emulex Network Systems
V: (714) 513-8012
F: (714) 513-8265
randall.flind...@emulex.com
__   __
__\ /__
__/ \__
E  M  U  L  E  X

Chairman
Orange County Chapter
IEEE EMC Society
r.flind...@ieee.org


<>

RE: Precompliance Testing

[Flinders, Randall]

Sara will be demonstrating the Ambient Canceling System at the next Meeting 
of the Orange County Chapter of the IEEE EMC Society.   The date of the 
meeting will be June 24th, and the meeting will be held at Emulex 
Corporation in Costa Mesa.  Anyone interested in attending the 
demonstration should contact me at the phone number and/or e-mail shown 
below.
--
Sincerely,

Randall T. Flinders
EMC Engineer
Emulex Network Systems
V: (714) 513-8012
F: (714) 513-8265
randall.flind...@emulex.com
__   __
__\ /__
__/ \__
E  M  U  L  E  X

Chairman
Orange County Chapter
IEEE EMC Society
r.flind...@ieee.org



--
From:   Gorodetsky, Vitaly
Sent:   Thursday, May 06, 1999 9:06 AM
To: 'Aschenberg, Mat'; Gorodetsky, Vitaly; 'Flinders, Randall'; 'Hans 
Mellberg'; 'emc-pstc'
Cc: 'pparh...@sara.com'
Subject:RE: Precompliance Testing

It is simple and elegant patent pending solution  (Cassper Div. of SARA has
filed for patent). Contact Dr. Parviz Parhami of SARA :  pparh...@sara.com

> -Original Message-
> From: Aschenberg, Mat [SMTP:matt.aschenb...@echostar.com]
> Sent: Thursday, May 06, 1999 8:31 AM
> To:   'Gorodetsky, Vitaly'; 'Flinders, Randall'; 'Hans Mellberg';
> 'emc-pstc'
> Subject:  RE: Precompliance Testing
>
> What would that method be?
> Mat
>
> > -Original Message-----
> > From:   Gorodetsky, Vitaly [SMTP:vgorodet...@canoga.com]
> > Sent:   Wednesday, May 05, 1999 6:22 PM
> > To: 'Flinders, Randall'; 'Hans Mellberg'; 'emc-pstc'
> > Subject:RE: Precompliance Testing
> >
> > In stationary case, such as OATS, there's a relatively inexpensive way
> of
> > automatic cancelling ambients out .
> >
> > -Original Message-
> > From:   randall.flind...@emulex.com
> > [SMTP:randall.flind...@emulex.com]
> > Sent:   Wednesday, May 05, 1999 12:23 PM
> > To: 'Hans Mellberg'; 'emc-pstc'
> > Subject:RE: Precompliance Testing
> >
> > I second that opinion.  My experience shows SEVERE ambient issues
> > with rooftop sites.
> > --
> > Sincerely,
> >
> > Randall T. Flinders
> > EMC Engineer
> > Emulex Network Systems
> > V: (714) 513-8012
> > F: (714) 513-8265
> > randall.flind...@emulex.com
> > __   __
> > __\ /__
> > __/ \__
> > E  M  U  L  E  X
> >
> > Chairman
> > Orange County Chapter
> > IEEE EMC Society
> > r.flind...@ieee.org
> >
> >
> >
> > --
> > From:   Hans Mellberg
> > Sent:   Wednesday, May 05, 1999 7:59 AM
> > To: emc-p...@majordomo.ieee.org; bogda...@pacbell.net;
> > Gary McInturff
> > Cc: 'Brent DeWitt'; Allen Tudor; emc-p...@ieee.org
> > Subject:Re: Precompliance Testing
> >
> >
> >
> > Before you put a rooftop OATS, (assuming you are not located
> > in Easter
> > Island or the Caribean Islands!) you are going to deal with
> > substantially higher ambient signals. It so happens that
> > when you need
> > a stronger signal, a common practice is to raise the
> > antenna! I have
> > battled those problems twice in my past and I would not
> > reccomend
> > rooftop OATS anymore.
> >
> >
> > --- bogda...@pacbell.net wrote:
> > > May I add a note of caution:
> > > It may be worthwhile to check the permissible
> > > loading of the roof, especially
> > > when you are in the Southwest where roofs are mostly
> > > for shade and a few drops
> > > of rain. I guess that you don't want to appear
> > > suddenly in the conference room
> > > below
> > > Bogdan.
> > >
> > > Gary McInturff wrote:
> > >
> > > > I'll agree with Brent, and others, the headaches
> > > of a metal room or the
> > > > metal studs et al, in a building are going to make
> > > you pull your hair out.
> > > > But there is an alternative to the parking lot.
> > > 

EMC Resources on the web

[Flinders, Randall]

Hello!  Greetings from Orange County!

I am interested in compiling a list of valuable EMC related resources 
available on the web.  If you kind guys and gals out there could address 
them to me, I will compile the results and post them for the group all at 
once.

Thanks!
--
Sincerely,

Randall T. Flinders
EMC Engineer
Emulex Network Systems
V: (714) 513-8012
F: (714) 513-8265
randall.flind...@emulex.com
__   __
__\ /__
__/ \__
E  M  U  L  E  X

Chairman
Orange County Chapter
IEEE EMC Society
r.flind...@ieee.org

<>

Take my Shield Room, Please!

[Flinders, Randall]

Greetings Compliance Professionals!

We happen to have a shield room we recently dismantled available to anyone 
who wants to come pick the thing up.  It is a single-walled, steel room 
with a standard size door.  The measurements of the chamber are 8 feet high 
by 12 feet wide by 16 feet long.  It is designed in such a way that it 
would need substantial modifications if you were to try and hang absorbers 
on the ceiling and/or walls.  The manufacturer of the chamber is unknown. 
 It is currently dismantled and stacked on a pallet in our shipping area.

Anyone interested in acquiring the chamber should contact me at the phone 
number / e-mail shown below.
--
Sincerely,

Randall T. Flinders
EMC Engineer
Emulex Network Systems
V: (714) 513-8012
F: (714) 513-8265
randall.flind...@emulex.com
__   __
__\ /__
__/ \__
E  M  U  L  E  X

Chairman
Orange County Chapter
IEEE EMC Society
r.flind...@ieee.org

<>

RE: Precompliance Testing

[Flinders, Randall]

I second that opinion.  My experience shows SEVERE ambient issues with rooftop 
sites.
-- 
Sincerely,

Randall T. Flinders
EMC Engineer
Emulex Network Systems
V: (714) 513-8012
F: (714) 513-8265
randall.flind...@emulex.com
__   __
__\ /__
__/ \__
E  M  U  L  E  X

Chairman
Orange County Chapter
IEEE EMC Society
r.flind...@ieee.org



--
From:   Hans Mellberg
Sent:   Wednesday, May 05, 1999 7:59 AM
To: emc-p...@majordomo.ieee.org; bogda...@pacbell.net; Gary McInturff
Cc: 'Brent DeWitt'; Allen Tudor; emc-p...@ieee.org
Subject:Re: Precompliance Testing



Before you put a rooftop OATS, (assuming you are not located in Easter
Island or the Caribean Islands!) you are going to deal with
substantially higher ambient signals. It so happens that when you need
a stronger signal, a common practice is to raise the antenna! I have
battled those problems twice in my past and I would not reccomend
rooftop OATS anymore.


--- bogda...@pacbell.net wrote:
> May I add a note of caution:
> It may be worthwhile to check the permissible
> loading of the roof, especially
> when you are in the Southwest where roofs are mostly
> for shade and a few drops
> of rain. I guess that you don't want to appear
> suddenly in the conference room
> below
> Bogdan.
> 
> Gary McInturff wrote:
> 
> > I'll agree with Brent, and others, the headaches
> of a metal room or the
> > metal studs et al, in a building are going to make
> you pull your hair out.
> > But there is an alternative to the parking lot.
> You may want to consider the
> > roof. The ground reference can be put up there as
> well, especially if you
> > are doing pre-compliance stuff. You don't have to
> give up parking space -
> > which is sure to irate somebody. The roof gets a
> little hot, but that only
> > gives you the opportunity to work in your cutoffs,
> and showing up to a
> > meeting with the suits dressed like this is always
> good for a laugh!
> > Gary
snip

===
Best Regards
Hans Mellberg
EMC Consultant
_
Do You Yahoo!?
Get your free @yahoo.com address at http://mail.yahoo.com


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<>

RE: where to buy EMC standards

[Flinders, Randall]

Mr. Pingyu,

contact Lorie Nichols of Conformity at:

tel: (508) 486-0888
fax: (508) 486-8828

She has been very helpful in providing me with all of the standards I have 
needed.  In addition to the specs you listed, you might consider purchasing 
the European Norm for the Immunity requirements.  The Generic Norm being 
EN50082-1 for light industrial equipment, while if your products fall in 
the category of ITE, then you would want to pick up EN55024.

Hope this helps!

--
Sincerely,

Randall T. Flinders
EMC Engineer
Emulex Network Systems
V: (714) 513-8012
F: (714) 513-8265
randall.flind...@emulex.com
__   __
__\ /__
__/ \__
E  M  U  L  E  X


Chairman
Orange County Chapter
IEEE EMC Society
r.flind...@ieee.org


--
From:   Qu Pingyu
Sent:   Thursday, April 29, 1999 6:31 PM
To: 'emc-p...@ieee.org'
Subject:where to buy EMC standards

Hello, everyone:

We would like to buy the following EMC standards (US and Europe):

1.  CISPR 22
2.  IEC - 1000 - 1,2,3,4
3.  FCC CFR 47, Vol.1
4.  ANSI C63.4

I suppose that these are the most frequently-used standards in EMC testing.
(Do I miss anything ?). I would appreciate if anybody could tell me where I
can buy these standards.

Regards

Qu Pingyu


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specifications live forever

[Flinders, Randall]

This is interesting, although I cannot say how true it is.  It does explain 
some of the specifications I find myself testing to everyday.

Randy Flinders
EMC Engineer
Emulex Network Systems
randall.flind...@emulex.com
(714) 513-8012
--
 How Specs Live Forever
 --
 The US Standard railroad gauge (distance between the rails) is 4 feet,
 8.5 inches. That's an exceedingly odd number. Why was that gauge used?
 Because that's the way they built them in England, and the US railroads
 were built by English expatriates. Why did the English people build them
 like that? Because the first rail lines were built by the same people
 who built the pre-railroad tramways, and that's the gauge they used.
 Why did "they" use that gauge then? Because the people who built the
 tramways used the same jigs and tools that they used for building
 wagons, which used that wheel spacing. Okay! Why did the wagons use that
 odd wheel spacing? Well, if they tried to use any other spacing the
 wagons would break on some of the old, long distance roads, because
 that's the spacing of the old wheel ruts.

 So who built these old rutted roads? The first long distance roads in
 Europe were built by Imperial Rome for the benefit of their legions. The
 roads have been used ever since. And the ruts?  The initial ruts, which
 everyone else had to match for fear of destroying their wagons, were
 first made by Roman war chariots.  Since the chariots were made for or
 by Imperial Rome they were all alike in the matter of wheel spacing.
 Thus, we have the answer to the original questions. The United State
 standard railroad gauge of 4 feet, 8.5 inches derives from the original
 specification  for an Imperial Roman army war chariot.

 Specs and Bureaucracies live forever. So, the next time you are handed a
 specification and wonder what horse's ass came up with it, you may be
 exactly right. Because the Imperial Roman chariots were made to be just
 wide enough to accommodate the back-ends of two war horses.
 

<>

RE: FCC part 15 text

[Flinders, Randall]

The following is taken from an FCC Guide to the new DoC procedure for Class 
B Certification.  As you can see, the text of the Compliance Statement 
located on the exterior of the device depends on the size of the device, as 
described below:

PRODUCT LABELING INFORMATION:

"If the device is extremely small, no FCC certification information need be 
placed on the unit, but both the FCC Compliance Statement and the FCC 
Warning Statement should be included in the Manual "in a conspicuous 
location".

If the device is moderately small, an abbreviated FCC Compliance statement 
should be placed on it's exterior, in no less than (8) point san serif 
type.  Example: (not in correct type or font)

THIS DEVICE COMPLIES WITH PART 15 OF THE FCC RULES.  SEE INSTRUCTION 
MANUAL.

If the product is larger, it should carry the full text of the FCC 
Compliance Statement, as follows, in the same minimum type face and size as 
the abbreviated message above.  The overall size and shape of the notifi  
cation is not regulated.  Example: (Not in correct type or font)

THIS DEVICE COMPLIES WITH PART 15 OF THE FCC RULES.  OPERATION OF THIS 
DEVICE IS SUBJECT TO THE FOLLOWING TWO CONDITIONS: (1) THE DEVICE MAY NOT 
CAUSE HARMFUL INTERFERENCE, AND (2) THIS DEVICE MUST ACCEPT ANY 
INTERFERENCE RECEIVED, INCLUDING INTERFERENCE THAT MAY CAUSE UNDESIRED 
OPERATION.

Regardless of which scenario your product fits into, keep in mind that you 
are still required to label the product with the FCC Self-Certification 
Logo and associated product number.  If you are submitting an application 
for Certification using the older route (Form 731), the Certification 
Statement and FCC Warning Statement (Statement to the User in the Manual) 
remain the same as above, however, instead of labeling your product with 
the FCC Self-Certify Logo, the product will require the FCC Identifier to 
be placed on the exterior of the product.

MANUAL INFORMATION:

If the product carries no FCC Compliance Statement or the Abbreviated 
Compliance Statement, the full text of the Compliance Statement must be 
included in the manual as follows:

FCC Compliance Statement:

THIS DEVICE COMPLIES WITH PART 15 OF THE FCC RULES.  OPERATION OF THIS 
DEVICE IS SUBJECT TO THE FOLLOWING TWO CONDITIONS: (1) THE DEVICE MAY NOT 
CAUSE HARMFUL INTERFERENCE, AND (2) THIS DEVICE MUST ACCEPT ANY 
INTERFERENCE RECEIVED, INCLUDING INTERFERENCE THAT MAY CAUSE UNDESIRED 
OPERATION.

Regardless of the form of the FCC Compliance Statement, all tested and 
approved Class B devices should have the FCC Warning Statement in the 
Manual as described in section 15.105(b) of FCC CFR 47 (October 1, 1998).

I hope this helps.

--
Sincerely,

Randall T. Flinders
EMC Engineer
Emulex Network Systems
V: (714) 513-8012
F: (714) 513-8265
randall.flind...@emulex.com
__   __
__\ /__
__/ \__
E  M  U  L  E  X



--
From:   kim.boll.jen...@i-data.com
Sent:   Monday, April 12, 1999 6:31 AM
To: emc-p...@ieee.org
Subject:FCC part 15 text

Dear groupe,

I have just started in a new job and are preparing label text for FCC class
B ITE equipment for verification. I would use the ?15.105 text in the
manual and the following ? 15.19 (3) text on the equipment:

  This device complies with part 15 of the FCC Rules. Operation is
  subject to the following
two conditions: (1) This device may not cause harmful interference, and (2)
this device must accept any interference received, including interference
that may cause undesired operation.

But the production leader say that UL have told them that the following
text on the equipment is OK:


 This equipment complies with the requirements in Part 15 of FCC Rules.
See manual


Where have UL got this text from and is it OK to use this short version ?

Best regards,

Mr. Kim Boll Jensen
i-data, Denmark



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RE: Sound measurement

[Flinders, Randall]

James,

John Downs of dB Sound Labs has always been able to answer those types of 
questions for me.  You might try giving him a call.  His contact info is 
shown below...

John Downs
Sr. Staff Engineer
(760) 940-4216
Fax: (760) 940-6321
412 Hillway Drive
Vista, Ca. 92084-6342

--
Sincerely,

Randall T. Flinders
EMC Engineer
Emulex Network Systems
V: (714) 513-8012
F: (714) 513-8265
randall.flind...@emulex.com
__   __
__\ /__
__/ \__
E  M  U  L  E  X



--
From:   GOEDDERZ, JIM
Sent:   Thursday, April 08, 1999 10:19 AM
To: 'PSnetPost'
Subject:Sound measurement

Hello group,

I have been able to find limits for noise exposure, but not measurement
methods. Can anyone give the measurement methods, or a reference to a
method. Specifically, I'm looking for something like the distance from the
microphone, to the noise source.

Thank you

James Goedderz
Sensormatic

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REMINDER - O.C. EMC Society Meeting Today!

[Flinders, Randall]

There are still plenty of seats left for the April meeting of the Orange 
County Chapter of the IEEE EMC Society.  Everyone is welcome to join us!

Details below.


Greetings EMC Professionals!

The Orange County Chapter of the IEEE EMC Society has invited Charlie M. 
Bayhi to speak at our April meeting!  We are very pleased that Charlie is 
available to share his presentation, titled "Designing for Safety for the 
Year 2000 and Beyond" with out group, and sincerely hope that you are able 
to join us!

About the Presentation:

Although not all EMC Engineers are directly exposed to Product Safety 
Compliance on a day-to-day basis, the EMC and Product Safety fields are so 
closely related that any Product Safety Knowledge comes in handy for EMC 
Engineers.  Charlie's presentation will discuss mandatory Safety 
certifications, the European Union and CE Marks, the North American Bi 
National Standard for ITE Equipment (another Y2K problem).  Principles of 
Safety will be discussed as they relate specifically to EMC.  In addition, 
he will discuss the CB scheme, and future and present requirements for 
other countries for ITE, Telecom, Medical, and Test/Measurement Equipment.

About the Speaker: (Charles M. Bayhi, P.E.)

Charlie Bayhi is a Product Safety Forensic and Consulting Engineer and has 
been involved in Product Safety on a worldwide basis for more  than 30 
years.
He is President and Principal Consultant of CPSM Corporation, and provides 
product safety design guidance, development of Product Safety Programs, 
 safety certification of products,  forensic analysis of accidents and 
fires,  and technical advisory for development of products and safety 
standards.
Charlie is a Registered Professional Safety Engineer in the state of 
California, and a Subject Matter and a Technical Expert for the Board.  He 
is a member of Underwriters Laboratories Industry Advisory Council, 
Forensic Consultants Association Orange County, Association of Professional 
Consultants, Member of the Institute of Electrical and Electronics 
Engineers (IEEE), Chairman of the Southern California Chapter, Technical 
Committee on Product Safety, of the IEEE, and a member of the IEEE 
Consultants Network. In addition to publishing numerous articles, Charlie 
has been a guest speaker at the Power Electronics Conference, and has made 
numerous Product Safety presentations, which include Fortune 500 companies 
such as AT&T Corporation, NCR Corporation, Canon Computers, Tektronix 
Corporation and Zero Corporation.

When:

Thursday, April 8, 1999
6:00 PM - Social Hour Begins (Non-Alcoholic Beverages Served)
6:30 PM - Dinner Served
7:00 PM - Presentation Begins

Where:

Emulex Corporation
3535 Harbor Blvd
Costa Mesa, Ca. 92626
Entrance between Emulex and QLogic Buildings

Cost:

$10.00 - IEEE Members and Students w/valid student ID.
$15.00 - Non-IEEE Members

RSVP:

Please RSVP to Randy Flinders
r.flind...@ieee.org
(714) 513-8012

Please contact Randy Flinders if you have any questions or need directions 
to the meeting.  See you there!
--
Sincerely,

Randall T. Flinders
Chairman
Orange County Chapter
IEEE EMC Society
V: (714) 513-8012
F: (714) 513-8265
r.flind...@ieee.org

<>

RE: Jamaica

[Flinders, Randall]

Or a better question could be.

do they need any EMC engineers over there?

-- 
Sincerely,

Randall T. Flinders
EMC Engineer
Emulex Network Systems
V: (714) 513-8012
F: (714) 513-8265
randall.flind...@emulex.com
__   __
__\ /__
__/ \__
E  M  U  L  E  X



--
From:   Jody Leber
Sent:   Friday, March 26, 1999 8:17 AM
To: EMC-PSTC (E-mail)
Subject:Jamaica

Are there any regulatory required for Jamaica?

Best Regards,

Jody Leber

jle...@ustech-lab.com
http://www.ustech-lab.com

U. S. Technologies
3505 Francis Circle
Alpharetta, GA 30004

770.740.0717
Fax:  770.740.1508


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Orange County IEEE EMC Society Meeting

[Flinders, Randall]

Greetings EMC Professionals!

The Orange County Chapter of the IEEE EMC Society has invited Charlie M. 
Bayhi to speak at our April meeting!  We are very pleased that Charlie is 
available to share his presentation, titled "Designing for Safety for the 
Year 2000 and Beyond" with out group, and sincerely hope that you are able 
to join us!

About the Presentation:

Although not all EMC Engineers are directly exposed to Product Safety 
Compliance on a day-to-day basis, the EMC and Product Safety fields are so 
closely related that any Product Safety Knowledge comes in handy for EMC 
Engineers.  Charlie's presentation will discuss mandatory Safety 
certifications, the European Union and CE Marks, the North American Bi 
National Standard for ITE Equipment (another Y2K problem).  Principles of 
Safety will be discussed as they relate specifically to EMC.  In addition, 
he will discuss the CB scheme, and future and present requirements for 
other countries for ITE, Telecom, Medical, and Test/Measurement Equipment.

About the Speaker: (Charles M. Bayhi, P.E.)

Charlie Bayhi is a Product Safety Forensic and Consulting Engineer and has 
been involved in Product Safety on a worldwide basis for more  than 30 
years.
He is President and Principal Consultant of CPSM Corporation, and provides 
product safety design guidance, development of Product Safety Programs, 
 safety certification of products,  forensic analysis of accidents and 
fires,  and technical advisory for development of products and safety 
standards.
Charlie is a Registered Professional Safety Engineer in the state of 
California, and a Subject Matter and a Technical Expert for the Board.  He 
is a member of Underwriters Laboratories Industry Advisory Council, 
Forensic Consultants Association Orange County, Association of Professional 
Consultants, Member of the Institute of Electrical and Electronics 
Engineers (IEEE), Chairman of the Southern California Chapter, Technical 
Committee on Product Safety, of the IEEE, and a member of the IEEE 
Consultants Network. In addition to publishing numerous articles, Charlie 
has been a guest speaker at the Power Electronics Conference, and has made 
numerous Product Safety presentations, which include Fortune 500 companies 
such as AT&T Corporation, NCR Corporation, Canon Computers, Tektronix 
Corporation and Zero Corporation.

When:

Thursday, April 8, 1999
6:00 PM - Social Hour Begins (Non-Alcoholic Beverages Served)
6:30 PM - Dinner Served
7:00 PM - Presentation Begins

Where:

Emulex Corporation
3535 Harbor Blvd
Costa Mesa, Ca. 92626
Entrance between Emulex and QLogic Buildings

Cost:

$10.00 - IEEE Members and Students w/valid student ID.
$15.00 - Non-IEEE Members

RSVP:

Please RSVP to Randy Flinders
r.flind...@ieee.org
(714) 513-8012

Please contact Randy Flinders if you have any questions or need directions 
to the meeting.  See you there!
--
Sincerely,

Randall T. Flinders
Chairman
Orange County Chapter
IEEE EMC Society
V: (714) 513-8012
F: (714) 513-8265
r.flind...@ieee.org

<>

Re: Visible Light & EMC

[Flinders, Randall]

Is there a "permeability" or "permitivity" quantity given to these solids, 
in order to calculate the loss at a given frequency?  Since the solid's 
electrical conductivity has no effect on its ability to pass or reflect EM 
energy in the visible light spectrum, then you would conclude that there 
are no issues of capacitance and inductance.

Anyone know what the formulas are to calculate this quantity, and what 
given variables are required to do so?  At what frequency does EM radiation 
stop acting like electric wave propagation and start behaving like Light?

This seems like a very interesting topic, and one that many of us EMC 
engineers (maybe not the good ones, but the rest of us) are in the dark 
about.  (pun intended.)

Regards,


Randy Flinders
EMC Engineer
Emulex Network Systems
randall.flind...@emulex.com
(714) 513-8012

--
From:   b...@namg.us.anritsu.com
Sent:   Thursday, March 11, 1999 2:02 PM
To: "smtp@WILTRON7@Servers[\"Allen Tudor\" , on 3/11/99 1:21 PM:
This question sounds goofy, but here goes anyway

Why doesn't visible light travel through solid objects (plastic, wood,
etc)?  Unless I've totally missed the boat, visible light is
electromagnetic energy beginning at about 100,000GHz.  So why doesn't it
behave like electromagnetic energy in the radio spectrum?  My guess is that 
it has something to do with the wavelength vs. the thickness of the object.



Allen Tudor, Compliance Engineer
PairGain Technologies  tel:  (919)875-3382
2431-153 Spring Forest Rd.   fax: (919)876-1817
Raleigh, NC  27615   email:
allen_tu...@pairgain.com



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-

RE: Seeking PCs that Pass CISPR

[Flinders, Randall]

Eric,

We have run into the same problem here at Emulex.  Our Host PC's need to 
provide Class B compliance - something that seems hard to find these days. 
 We have evaluated many, many, many PCs, and in the end, decided on a 
Gateway 2000 Tower.

Our requirements are more stringent than most, because our add-in PCI 
adapters implement a 1GHz clock rate and fire off a 1GHz data signal down a 
30 meter copper line.  This presents problems from a chassis integrity 
point of view, due to the fact that we measure to 5 GHz and just about any 
slot is a transmitter at those frequencies.

The Gateway 2000 Tower PC implements conductive gaskets instead of metal 
fingers at the chassis access panel, which eliminates "in-between" slots. 
 The gaskets also seem to hold up to continuous opening of the access panel 
better than the fingers, which tend to break and/or bend.  In addition, the 
Gateway 2000 PC has metal fingers installed on the ISA/PCI slots at the 
rear of the chassis, ensuring a good contact to the card brackets.

Our analysis of the PC has shown that the unit provides 4-5 dB of margin to 
CISPR 22 Class B, and was verified on multiple test sites.  I would 
recommend you give Gateway a try.

Our unit is Model Number: LPMini-Tower 6P6-300.  We also chose the upgraded 
17" monitor which is made by Mitsubishi (Model TFV87055KHKW).  It provides 
an excellent profile as well.

Good luck on your hunt!



Randy Flinders
EMC Engineer
Emulex Network Systems
(714) 513-8012
randall.flind...@emulex.com


--
From:   eric.lif...@natinst.com
Sent:   Wednesday, March 03, 1999 3:10 PM
To: IEEE EMC and Product Safety Discussion List
Subject:Seeking PCs that Pass CISPR

Colleagues,

My (formerly) preferred vendor of Intel based personal computer systems,
used for CISPR-11/22 and immunity testing of our boards and peripherals,
are lately having emissions up to the Class A limit fresh out of the box -
without any peripherals attached.  So I must query the List Members for
experience-based suggestions for make and model of a passing system that I
can buy here in the USA.

I need Pentium II equivalent PCI/ISA systems that pass Class A with at
least 4 dB of margin and endure EN 50082-1:1992 testing on a weekly basis
for most of a year.  Systems that can pass EN 50082-1:1998 (or EN
61326-1:1998) would be nice but I suspect few, if any, are available.  We
buy about 4 new machines each year as they wear out.

Please don't suggest that I complain to the PC vendor since I really don't
have time to spend on the matter.  I've already traded our newest PC to
another department that doesn't care about EMC in exchange for an older
compliant PC.  I just need a long-term solution.

Most importantly, please send your recommendations direct to me to minimize
clutter on the list.  Unless you specify not to, I'll post a summary of all
comments to the list since I believe others are equally interested in the
results.

Regards and Thanks In Advance,
Eric Lifsey
Compliance Engineer/Manager
National Instruments



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RE: ESD Test Plane Material Type

[Flinders, Randall]

I have used both aluminum and copper, and I prefer aluminum solely based on the 
fact that it is lighter and easier to work with.  Its also cheaper.  I have 
never seen any differences when testing a product on both setups.

Regards,

Randy Flinders
EMC Test Engineer
Emulex Network Systems
(714) 513-8012
randall.flind...@emulex.com

--
From:  chris_dup...@compuserve.com
Sent:  Monday, December 07, 1998 11:27 PM
To:  INTERNET:dlo...@advanced-input.com; emc-pstc
Subject:  ESD Test Plane Material Type

Hi Darrell.

You wrote:



The material used for your ESD coupling plane and ground reference is
effectively irrelevant.  Alumimium is fine.  

Regards,

Chris Dupres
Surrey, UK.

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Reminder! - Orange County IEEE EMC Society Meeting/Presentation

[Flinders, Randall]

Greetings Compliance Professionals!

* REMINDER *

The Orange County Chapter of the IEEE EMC Society is holding it's bi-monthly 
meeting in Costa Mesa on Thursday, December 10th.  A description of the 
Technical presentation and the Speakers is given below.

The meeting will be held at Emulex Corporation, located at 3535 Harbor Blvd in 
Costa Mesa.  The meeting includes soft drinks and dinner.  The cost of the 
dinner is $10.00 for IEEE members and students, and $15.00 for non-IEEE Members.

6:00 PM - Soft Drinks
6:30 PM - Dinner Served
7:00 PM - Presentation Begins

Reservations are required.  For more information of to RSVP, please contact 
Randy Flinders at (714) 513-8012 or at r.flind...@ieee.org.

Technical Presentation:  The Broadband Gigahertz Field Simulator Chamber
The Broadband Gigahertz Field (BGF) Simulator Chamber is an innovative new 
electromagnetic test tool versatile enough to star in both emissions and 
immunity testing roles.  Offering significant benefits in accuracy, power 
efficiency, space savings, and ease-of-use, the BGF Simulator Chamber facility 
at AST Computer recently received approval from the FCC for EMI emissions 
certification testing after 3 years of outstanding performance as an immunity 
test facility.  Jozef Baran of AST and Mark Frankfurth of Cymer are excited 
about the opportunity to share the concept, test methodologies, and 
experimental results obtained from this unique technical achievement.  The 
presentation will highlight the hybrid antenna structure and the advantages 
over present test facilities including classical chambers and GTEM cells.  
Field uniformity characteristics for immunity as well as an overview of the FCC 
qualification testing process for an emissions measurement chamber facility 
will be presented.

BIOGRAPHICAL DATA
Jozef Baran received a Masters degree in Electrical Engineering from Wroclaw 
Technical University in 1970 and joined AST Research Inc. in 1987.  Currently 
Mr. Baran is a Senior Principal EMC Engineer and Department Manager for the EMC 
Engineering, Product Safety, and Reliability Engineering departments at AST as 
well as an active consultant in the EMC field.  An expert in electromagnetic 
interference phenomena, Mr. Baran is the holder of multiple patents related to 
EMI control in printed circuit board design, and he is a NARTE certified EMC 
engineer and an active member of the IEEE EMC Society.
Mark Frankfurth is a graduate of Virginia Polytechnic Institute and State 
University (VPI & SU "Virginia Tech") in Blacksburg, Virginia, receiving a 
Bachelor's degree in Electrical Engineering in 1988.  Presently holding the 
position of Senior Compliance Engineer at Cymer Laser Technologies in San 
Diego, Mark leads a wide variety of compliance testing efforts on excimer laser 
systems used for microlithography of high-density semiconductors.  During his 5 
years at AST Research Inc., Mark contributed to product development of ITE 
(personal computer systems and peripheral devices) from an EMC, product safety, 
and reliability engineering perspective.  Mark is an active member of the IEEE 
acting as an officer of the San Diego EMC Society and ASQ as a Certified 
Quality Engineer (CQE).  Mark has several articles, technical papers, and 
technical presentations to his credit.

Regards,


Randy Flinders
Chairman
Orange County Chapter
IEEE EMC Society
(714) 513-8012
r.flind...@ieee.org


Regards,


Randy Flinders
EMC Engineer
Emulex Network Systems
(714) 513-8012
randall.flind...@emulex.com

<>

RE: suspect conducted emissions

[Flinders, Randall]

The high floor noise in the low frequency area could simply be due to your 
receiver.  Try running the test without the LISN connected (terminate the 
receiver with a 50 ohm load) and check the performance of the receiver.  I have 
seen many spectrum analyzers act this way.

Regards,


Randy Flinders
EMC Engineer
Emulex Network Systems
(714) 513-8012
randall.flind...@emulex.com


--
From:  peterh...@aol.com
Sent:  Tuesday, November 17, 1998 7:53 PM
To:  emc-p...@majordomo.ieee.org
Subject:  suspect conducted emissions

Hello group,

I recently carried out a conducted emission in our unlined screen room with no
EUT connected. I.e just the LISN inside and measuring receiver outside the
room. I was expecting the plot to be a horizontal line and very low perhaps in
the region of 10 or 20dB. Instead I noticed that the plot starts at about 40dB
at 150kHzand decreases to about 20dB at around 1MHz and then after that is a
horizontal line all the way to 30MHz. Bearing in mind that the room is very
well grounded and I use a reputable measuring device. My questions are:

1-Is this what one would expect to see?
2-Why the noise floor so high in an screen room?
3-What can we do to reduce the noise floor?
4-What is the best method to ensure that the room is O.K?

Any help and advice is appreciated.

With regards
Peter

E-mail: peterh...@aol.com 

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RE: ANSI C63.4 -- ferrites

[Flinders, Randall]

I have seen power cables "impregnated" with ferrite throughout the entire 
length of the cable.  These cables were very expensive (about $20.00 for a 6 
foot cable), but were found to be very effective in situations where emissions 
were seen off of a unit's power cable.  These cables were used as a diagnostic 
tool, but were generally too expensive to ship with a market ready device.  
However, this does indicate that ferrite along the entire length of the cable 
would prove effective.  

Unfortunately, my experience with these cables was at a former employer, and my 
memory fails me as to the manufacturer of these cables.

It would be interesting to get a hold of some coaxial cable with these 
properties.  Does anyone know of any?  Clip-on Ferrites are bulky (and quite 
heavy).  Their repeated use on antenna cables from a day to day perspective is, 
in my view, quite a hassle, and I welcome any ideas that could provide for a 
more effective solution.


Regards,


Randy Flinders
EMC Engineer
Emulex Network Systems
(714) 513-8012
randall.flind...@emulex.com


--
From:  ed.pr...@cubic.com
Sent:  Monday, November 16, 1998 8:32 AM
To:  emc-p...@majordomo.ieee.org; randall.flind...@emulex.com; Robert Bonsen
Subject:  RE: ANSI C63.4 -- ferrites

Bob:

You stress the importance of discrete ferrite absorbers placed closely along 
the antenna cable. The obvious extension of this thought is to have a special 
antenna coaxial cable which has ferrite material continuously distributed along 
its external surface.

Is this a reasonable extrapolation of the discrete ferrites technique? Or does 
there have to be at least some spacing between discrete absorptive elements?

If a continuous absorptive layer on a coax cable is a good idea, then has 
anyone ever encountered such a cable?

Might there be some practical way to fabricate a flexible "add-on" absorptive 
sleeve, possibly like the urethane foam thermal barriers placed on water and 
refrigerant pipes?

Regards,

Ed



  From: Robert Bonsen 
  Subject: RE: ANSI C63.4 -- ferrites
  Date: Fri, 13 Nov 1998 17:02:52 -0600 
  To: randall.flind...@emulex.com, emc-p...@majordomo.ieee.org


> 
> In my experience when doing testing of semi-anechoic chambers for NSA
> performance using ferrites is a must to avoid measurements being influenced
> by the vertical drop portion on both the transmit and receive end. Using a
> spacing of about half a foot inbetween individual ferrite beads has worked
> best for me. Especially in the lower frequencies, up to about 150MHz, the
> effect of the cable drop on vertical pol measurements is considerable
> (sometimes more than 1.5 dB). Thus, in all the NSA test specifications I
> write, I insist on the use of ferrites. 
> 
> Of course, not using ferrites on the vertical cable drop allows a chamber
> tester to tweak the cables such that at a specific problem frequency the
> vertical cable drop portion acts as a reflector to reduce or increase the
> transmitted/received signal levels somewhat. This may bring a chamber/OATS
> in spec which really isn't. Or bring it out if the tester is not aware of
> the problem. 
> 
> For better repeatability and better NSA measurements, ferrites are
> required. They do not make the cable totally RF-invisible but do
> considerably reduce the influence of the cable on the measurements.
> 
> Regards,
> -Robert
> 
> Robert Bonsen
> Principal Consultant
> Orion Scientific
> email: rbon...@orionscientific.com
> URL:   http://www.orionscientific.com
> phone: (512) 347 7393; FAX: (512) 328 9240
> 
> 
> -
> This message is coming from the emc-pstc discussion list.
> To cancel your subscription, send mail to majord...@ieee.org
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> 

---End of Original Message-

--
Ed Price
ed.pr...@cubic.com
Electromagnetic Compatibility Lab
Cubic Defense Systems
San Diego, CA.  USA
619-505-2780
List-Post: emc-pstc@listserv.ieee.org
Date: 11/16/1998
Time: 08:32:01
--



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RE: ANSI C63.4

[Flinders, Randall]

When attaching the Ferrites, do they need only be attached to the Vertical 
portion of the cable?  Assuming the common mode currents force the cable to 
become an active element in the "system", then it would stand to reason that 
the portion of the cable running across the Mast mounting bar (perpendicular to 
the antenna elements) and the portion running along the ground plane would not 
contribute significant effects on the NSA results.

Is this assumption correct?  Also, what spacing of the ferrites has been found 
to be required in order to eliminate this effect?  I am also assuming that 
Ferrites are then left on during all product testing as well.



Regards,


Randy Flinders
EMC Engineer
Emulex Network Systems
(714) 513-8012
randall.flind...@emulex.com


--
From:  Colin Brench
Sent:  Friday, November 13, 1998 6:04 AM
To:  'EMC PSTC mail list'
Subject:  RE: ANSI C63.4


Concerning the discussions on the use of ferrite loaded feed cables
during NSA (or any other measurements).  There have been a number of
useful replies already but I would like to add a bit more information
for your consideration.

Using a feed cable which is co-polarized with the antenna will result in
that cable becoming a second element in an antenna array due to the
currents induced on to it.  While the position of the feed is fixed at
the top and sometimes the bottom also, it is free to move around
somewhat which can effect the degree of coupling especially where the
movement is a significant part of a wavelength.  The ferrites will
greatly minimize this induced current and so practically eliminate this
effect.

As far as having perfectly balanced antennas, this is possible in free
space, but if you use any antenna vertically polarized and close to the
ground plane, the loading of the ground plane does imbalance the
antenna.  This is most noticed at lower frequencies where the height
above the ground plane is minimal.  Horizontally the balance should be
preserved, but, the source impedance of the antenna will be altered due
to the loading effect of the ground plane, resulting is a change in
match (or rather degree of mismatch :-)).

No one would think of using a metal antenna mast for vertical
measurements, but few worry about the feed cable.  These effects are
easier to see and understand in terms of the transmit antenna, but they
apply equally to the receive antenna.

There have been a number of papers presented at the IEEE EMC symposia
over the years, from about 1990 on if I remember correctly.   One this
year looked at the errors in using the free space (real) antenna factor
with for a biconnical being used for anechoic chamber NSA measurements -
unfortunately I don't have the reference to hand.

Regards,

Colin Brench.

Compaq
Maynard, MA

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Orange County IEEE EMC Society Meeting

[Flinders, Randall]

Greetings Compliance Professionals!

The Orange County Chapter of the IEEE EMC Society is holding it's bi-monthly 
meeting in Costa Mesa on Thursday, December 10th.  A description of the 
Technical presentation and the Speakers is given below.

The meeting will be held at Emulex Corporation, located at 3535 Harbor Blvd in 
Costa Mesa.  The meeting includes soft drinks and dinner.  The cost of the 
dinner is $10.00 for IEEE members and students, and $15.00 for non-IEEE Members.

6:00 PM - Soft Drinks
6:30 PM - Dinner Served
7:00 PM - Presentation Begins

Reservations are required.  For more information of to RSVP, please contact 
Randy Flinders at (714) 513-8012 or at r.flind...@ieee.org.

Technical Presentation:  The Broadband Gigahertz Field Simulator Chamber
The Broadband Gigahertz Field (BGF) Simulator Chamber is an innovative new 
electromagnetic test tool versatile enough to star in both emissions and 
immunity testing roles.  Offering significant benefits in accuracy, power 
efficiency, space savings, and ease-of-use, the BGF Simulator Chamber facility 
at AST Computer recently received approval from the FCC for EMI emissions 
certification testing after 3 years of outstanding performance as an immunity 
test facility.  Jozef Baran of AST and Mark Frankfurth of Cymer are excited 
about the opportunity to share the concept, test methodologies, and 
experimental results obtained from this unique technical achievement.  The 
presentation will highlight the hybrid antenna structure and the advantages 
over present test facilities including classical chambers and GTEM cells.  
Field uniformity characteristics for immunity as well as an overview of the FCC 
qualification testing process for an emissions measurement chamber facility 
will be presented.

BIOGRAPHICAL DATA
Jozef Baran received a Masters degree in Electrical Engineering from Wroclaw 
Technical University in 1970 and joined AST Research Inc. in 1987.  Currently 
Mr. Baran is a Senior Principal EMC Engineer and Department Manager for the EMC 
Engineering, Product Safety, and Reliability Engineering departments at AST as 
well as an active consultant in the EMC field.  An expert in electromagnetic 
interference phenomena, Mr. Baran is the holder of multiple patents related to 
EMI control in printed circuit board design, and he is a NARTE certified EMC 
engineer and an active member of the IEEE EMC Society.
Mark Frankfurth is a graduate of Virginia Polytechnic Institute and State 
University (VPI & SU "Virginia Tech") in Blacksburg, Virginia, receiving a 
Bachelor's degree in Electrical Engineering in 1988.  Presently holding the 
position of Senior Compliance Engineer at Cymer Laser Technologies in San 
Diego, Mark leads a wide variety of compliance testing efforts on excimer laser 
systems used for microlithography of high-density semiconductors.  During his 5 
years at AST Research Inc., Mark contributed to product development of ITE 
(personal computer systems and peripheral devices) from an EMC, product safety, 
and reliability engineering perspective.  Mark is an active member of the IEEE 
acting as an officer of the San Diego EMC Society and ASQ as a Certified 
Quality Engineer (CQE).  Mark has several articles, technical papers, and 
technical presentations to his credit.

Regards,


Randy Flinders
Chairman
Orange County Chapter
IEEE EMC Society
(714) 513-8012
r.flind...@ieee.org

<>

Lorie Nichols

[Flinders, Randall]

Greetings EMC / Product Safety Professionals!

I am trying to contact Lorie Nichols of Conformity.  Unfortunately, the phone 
numbers I have are no longer in service.  Does anyone have any current contact 
information on Lorie or on Conformity?


Regards,


Randy Flinders
EMC Engineer
Emulex Network Systems
(714) 513-8012
randall.flind...@emulex.com

<>

ANSI C63.4

[Flinders, Randall]

Greetings EMC Professionals!

We have a 10 Meter Open Area Test Site in our parking lot.  The Ground Plane is 
covered by 3 inches of concrete, and measures 29.4 meters by 7.9 meters.  There 
are several planters within the 2R x 1.73R 10-Meter ellipse as described in 
ANSI C63.4.  The Power and Signal Coax are run along the top of the ground 
plane, as underground installation is not an option.  I am attempting to 
improve the performance of this site.  The alterations I am considering are:

1) Installing a solid ground plane on TOP of the concrete.

2) Extending the width of the ground plane to 11.4 meters.

I have four questions to pose to the group:

Question #1 - Does anyone have experience with an OATS where the ground plane 
is covered with concrete?  What effect does this have on the performance of the 
site?

Question #2 - ANSI C63.4:1992 does not specify the minimum size of the ground 
plane.  Is there a guideline, or can someone tell me from experience, what the 
minimum size should be?

Question #3 - Does anyone have any feelings on what the effect of running the 
COAX and Power Cables on top of the Ground Plane can have on the site 
performance?  Would It be better to raise the ground plane off the ground (on a 
wooded platform) in order to run all of the cables under the GRP?

Question #4 - Although there are several trees with in the 10 meter Ellipse, 
they are located at the very edges of the Ellipse.  However, there are raised 
concrete curb planters and waist-high hedges that are well within the Ellipse.  
Can I expect these items to cause significant site abnormalities?  Also, how 
far away does a metal object need to be before I can consider it safe from 
causing abnormalities due to reflections?

Any insight or suggestions on this matter would be greatly appreciated.  Thanks 
for your time.

Regards,


Randy Flinders
EMC Engineer
Emulex Network Systems
(714) 513-8012
randall.flind...@emulex.com

<>

RE: Indoor vs. Outdoor emissions testing

[Flinders, Randall]

Does anyone have any experience with mode sturring as a method to improve the 
low frequency performance of test chambers?

Regards,


Randy Flinders
EMC Engineer
Emulex Network Systems
(714) 513-8012
randall.flind...@emulex.com


--
From:  Gordon Andrews
Sent:  Wednesday, October 28, 1998 11:09 AM
To:  emc-p...@majordomo.ieee.org
Subject:  Re: Indoor vs. Outdoor emissions testing

10 meter chambers can and will become resonate somewhere below 80MHz if
they are not large enough. In order to make them large enough to avoid
this problem you must build a building taller than most buildings to contain it!
I previously worked at a company where we did not trust measurements in that 
range.
They had a quiet open site like yours which was accurate.

> From: "Steve Kuiper" 
> To: "EMC-PSTC" 
> Subject: Indoor vs. Outdoor emissions testing
> Date: Tue, 27 Oct 1998 12:31:59 -0800
> X-Priority: 3
> X-MSMail-Priority: Normal
> X-Mimeole: Produced By Microsoft MimeOLE V4.71.1712.3
> X-Resent-To: Multiple Recipients 
> X-Listname: emc-pstc
> X-Info: Help requests to  emc-pstc-requ...@majordomo.ieee.org
> X-Info: [Un]Subscribe requests to  majord...@majordomo.ieee.org
> X-Moderator-Address: emc-pstc-appro...@majordomo.ieee.org
> 
> Joe,
> 
> Our laboratory was used to compare readings in the low-end, specifically 30
> MHz. to 90 MHz. on an OEM product   In particular the OEM customer who
> maintains 10m indoor anechoic facilities claimed that our customer was
> failing the CISPR22B limits by 5-6dB in the above freq. range.  After taking
> our own readings and comparisions with 3 different OATS in a 1.5 day
> turnaround we showed a 1.8 - 2.5 dB correlation between the OATS!! The
> meter reading at all three sites indicated a passing margin of 3-4dB using
> the identical product and configuration previously tested in the Anehoic
> Chamber.  All OATS test sites used contained different test, equipment,
> ground structure, ambients. etc.  Of course only 3 or 4 frequencies were
> observed for this comparison but we found our OATS correllation from site to
> site to be extremely good in this case.
> 
> In my opinion, for engineering purposes only the 10m chamber is ideally
> suited for accomplishing the task of high volume testing.   Zero ambients,
> and automated testing is the only way to fly.  However, with all the
> improving absorber technology as such I still believe for correlation and
> repeatability there is no equal to the 10m OATS, especially for those
> located in a low ambient environment.  Our faclity is located deep within a
> canyon at the base of a 4000 foot mountain in So. Cal near a creek bed.  The
> floor noise is excellent and the ambients are low.  Line noise is
> non-existent.  Our customers see many advantages.
> 
> Hope this helps.
> 
> Regards,
> SJK
> 
> 
> 
> 
> 
> 
> 
> 
> 
> 
> -
> This message is coming from the emc-pstc discussion list.
> To cancel your subscription, send mail to majord...@ieee.org
> with the single line: "unsubscribe emc-pstc" (without the
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> roger.volgst...@compaq.com (the list administrators).
> 

 
_/_/_/  _/_/  _/ _/  Gordon Andrews
   _/  _/_/  _/_/   _/   EMC Compliance Technician
  _/_/_/  _/_/  _/  _/ _/Office/Voice Mail:(650)-786-3899
 _/  _/_/  _/   _/_/ Email:gordon.andr...@eng.sun.com
_/_/_/   _/_/_/   _/ _/ 
 
M  I  C  R  O  S  Y  S  T  E  M  S
 




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RE: EN50082-1(1992)

[Flinders, Randall]

Roger,

We simply do the tests to the newer (EN61000 series) standards, and then   
write a deviation in the test report stating that we deviated from the   
standard to use the newer test procedures, in an effort to maintain   
continued compliance in the future.  Just make sure you cover the   
frequency range required by IEC 801-3 as well as EN61000-4-3.

As for differences, I have found minor changes, such as this one:

EN61000-4-4:1995
8.1.1 Climatic Conditions
 - relative humidity 25% to 75%
 - Atmospheric pressure 86 kPa to 106 kPa

IEC 801-4:1988
8.1.1 Climatic Conditions
 - relative humidity 45% to 75%
 - Atmospheric Pressure 68 kPa to 106 kPa

Regards,


Randy Flinders
EMC Engineer
Emulex Network Systems
(714) 513-8012
randall.flind...@emulex.com
r.flind...@ieee.org


 -Original Message-
From: rogerhsu [SMTP:roger...@astec-asia.com]
Sent: Wednesday, September 09, 1998 5:00 PM
To: emc-pstc
Subject: EN50082-1(1992)

 

 If I want to certify my product to meet the EN50082-1(1992)
 requirements, should I call for the IEC801 tests or the IEC1000-4
 series?  Is there any difference between them apart from the   
IEC801-3
 and the IEC1000-4-3?
   

 Thanks and Regards
   

 Roger Hsu

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RE: Recommendations for PCs

[Flinders, Randall]

One note on the Gateway towers -

The newer models implement conductive gaskets instead of fingers, which   
seem to hold up to continuous opening of the cover better.  Also, gaskets   
don't break off.

 - Randy Flinders
 - EMC Engineer
 - EMULEX Corp.

 -Original Message-
From: Bailin Ma [SMTP:b...@namg.us.anritsu.com]
Sent: Wednesday, September 02, 1998 4:43 PM
To: emc-pstc
Subject: RE: Recommendations for PCs

 
Mark,

You are right.  On the other hand, PC makers should also be careful
with their tower cases. I looked into many tower cases of Gateway 2000 a
few years ago. They all had enough spring fingers along the seems.

Best Regards,
Barry Ma

 -
Original Text
From: "Mark Briggs" , on 9/2/98 2:51 PM:
To:
Cc:

One other point to bear in mind - towers often prove to be better hosts
than an equivalent desktop version. The FCC requires that the monitor be
placed on top of the PC if it is a desktop unit in order to re-create a
typical operating condition (refer fig 11 of ANSI C63.4).  I have seen
several PCs which are ok UNTIL the monitor is placed on top of the host
and causes the chassis to flex, reducing the shielding effectiveness of
the host and letting the higher frequencies out.

Mark


> -Original Message-
>From: rbusche [SMTP:rbus...@es.com]
>Sent: Wednesday, September 02, 1998 8:01 AM
>To: emc-pstc
>Subject: Recommendations for PCs
>
> 
>We are in need of a PC to perform EMC testing in support of FCC and
>CISPR limits. We are looking for the latest, state of the art, system
>with at least 400 MHz processors. Can someone suggest to me (off line if
>desired) a good candidate for this application? It is surprising to me
>the number of quality systems that fail even BEFORE additional cards are
>added.
>
>Thanks in advance
>
>Rick Busche
>Evans & Sutherland
>Salt Lake City, Utah
>rbus...@es.com
>
> -
>This message is coming from the emc-pstc discussion list.
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>ri...@sdd.hp.com, or roger.volgst...@compaq.co (the list
>administrators).
>
>
>-
>This message is coming from the emc-pstc discussion list.
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>quotes).  For help, send mail to ed.pr...@cubic.com,
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>administrators).
>


Mark Briggs
mbri...@elliottlabs.com


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administrators).

RE: Recommendations for PCs

[Flinders, Randall]

After evaluation of several units, we have selected Gateway 2000 towers   
as our host system.  Our adapters implement clock frequencies above 1   
GHz, and the Gateway provides a solid chassis which performs well.

Randy Flinders
EMC Engineer
Emulex Network Systems
randall.flind...@emulex.com

 -Original Message-
From: rbusche [SMTP:rbus...@es.com]
Sent: Wednesday, September 02, 1998 8:01 AM
To: emc-pstc
Subject: Recommendations for PCs

 
We are in need of a PC to perform EMC testing in support of FCC and
CISPR limits. We are looking for the latest, state of the art, system
with at least 400 MHz processors. Can someone suggest to me (off line if
desired) a good candidate for this application? It is surprising to me
the number of quality systems that fail even BEFORE additional cards are
added.

Thanks in advance

Rick Busche
Evans & Sutherland
Salt Lake City, Utah
rbus...@es.com

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administrators).

RE: Antenna and Cable Calibration Query

[Flinders, Randall]

We use a Comb Generator to verify site performance before every test.  By   
taking readings on a daily basis, we can identify discreet probems, such   
as a bad connector or antenna balun, while also monitoring the long-term   
site characterists, such as frequency nulls developing due to cable   
breakdown.  This does not allow you to plot the transfer funtion of the   
system, but does allow for a quick way to verify the site integrity.  (My   
Comb generator readings take a total of about 20-30 minutes per day.)

The Comb Generator is also handy for performing site correlations with   
nearby commercial test labs.

We use a Com-Power Comb Generator, Model CG-520, which provides an output   
of 20 MHz steps from 20MHz to 4.5 GHz.  We have seen the stability to be   
about +/- 2 dB.

I hope this is of help!

Regards,


Randall Flinders
EMC Test Engineer
Emulex Network Systems
randall.flind...@emulex.com
(714) 513-8012

 --
From:  Gerry McMahon
Sent:  Wednesday, July 22, 1998 11:42 PM
To:  emc-pstc
Subject:  Antenna and Cable Calibration Query (30 - 3000 MHz)

 
 We  use a Bilog antenna, Horn antenna, cables, and a HP 8562A
 Spectrum Analyser to measure signals at frequencies between 30MHz
 and 3GHz.

 We need a set up to verify the operation of our
 measurement system (antenna, cables and spectrum analyser) before
 and after every job. We would be interested in receiving any
 information about possible cost effective methods (the HP 85640A
 tracking generator for this SA is beyond our budget) for testing
 our cables and antennas between 30MHz and at least 3GHz.

 Ideally we would like to be able to plot the transfer function of
 the antennas and cables, but measurements at a number of spot
 frequencies (e.g. using a comb generator) may be adequate. We
 would like to be able to test up to 14GHz, but realise that this
 may be prohibitively expensive.

Thanks for any advice.

Gerry McMahon
mcmah...@iol.ie

RE: Majordomo results: Re: odd immunity

[Flinders, Randall]

My question is. . . .

Even with the keystrokes, how could they access the account without   
possession of the the ATM card?

Regards,


Randy Flinders
EMC Test Engineer
Emulex Network Systems

Chairman
Orange County Chapter
IEEE EMC Society
 --
From:  Douglas Mckean
Sent:  Tuesday, July 07, 1998 6:57 PM
To:  emc-pstc
Subject:  Re: Majordomo results: Re: odd immunity problems ?

 
How about ...

The one where some creative types got some EMI(?) equipment
to monitor the keystrokes of people at an ATM?

Story goes that they sat in a van in a parking lot by the
bank with antennas focused on the ATM.  Once you entered
in your numbers, they could translate the EMI signature
to keystrokes on the keypad.  After you left the scene,
they drained your account.

Never knew if that was UL or fact.

RE: ESD Lab Certification

[Flinders, Randall]

An ESD Lab does not need to be "Certified", as long as it is used for   
Self-Certification testing under the EMC Directive.  If you plan on using   
the data to support Technical Construction Files (TCFs), then you will   
probably want to consider having the site evaluated by a Competent Body   
from Europe.  Your best bet is to have the site evaluated by the body who   
is holding your TCFs.

However, if you are not intending to go the TCF route, then simply set up   
the lab as decribed in EN61000-4-2 and zap away!

Regards,

Randall Flinders
EMC Engineer
Emulex Network Systems
randall.flind...@emulex.com


* Opinions expressed herein are personal and NOT corporate.

 --
From:  Darrell Locke (MSMail)
Sent:  Friday, June 19, 1998 7:42 AM
To:  'emc-p...@majordomo.ieee.org'
Subject:  ESD Lab Certification

 
Dear Members,

We would like to get our ESD Lab "Certified" for doing testing to IEC
1000-4-2.  Does anyone know which standards are to be used for lab
layout, grounding, and procedures to be followed.  What bodies or
agencies can certify a lab?

Thanks

Darrell Locke
Advanced Input Devices

RE: Emissions or not?

[Flinders, Randall]

Could it be a Radar Jammer, which receives radio waves and re-transmits   
them to fool the Radar Gun?  A poorly designed Radar Jammer could repeat   
in a very broadband fassion, especially since most are home built kits.

Just an idea.

 -
Randy Flinders
EMC Test Engineer
Emulex Network Systems
randall.flind...@emulex.com

 --
From:  Tim Haynes G-Net 701 3239 / 3455
Sent:  Wednesday, June 17, 1998 9:57 AM
To:  emc-pstc
Subject:  Re: Emissions or not?

 
WoW!

Replies!

Rather than respond in person I acknowledge all replies with thanks and
comment here.

BTW the 144.8 MHz tx is 100W e.r.p.

Reflections from the Green Italian car? Why not all the other cars? Over
all the other days, weeks, years that I have been using these
frequencies? Too much coincidence.

I like the idea that it might be the radio receiver in the Italian car
kicking out a spurious response.

Fault on my receiver? NEVER! :-) Oh well - possibly, but why only in
relation to this Italian car?

Third harmonic? 144.8 x 3 = 434.4 + 3xdeviation... not equal 433.325 by
a long way. BTW 3rd harmonic is neg 74dBc on my old HP 8566a. I think it
rules out the rusty bolt syndrome as well.

The idea that it is an alarm system (the "here I am - I've been stolen"
type) is possible though the chances are pretty low - there are not too
many users of that alarm system here in the UK.

Resonating car...? Hmm? Possibly but I streaches my imagination.

Duff (Duff is UK slang for faulty/bad) electronics! Well - this was my
first thought. Nice processor with lots of harmonics of clock
frequencies and the subdivisions. Lots of switches changing the
terminating impedance of the tracks (don't forget I am assuming a duff
design). Now that really would modulate an incoming signal!

Rating of the proposed causes? No I will let you all decide which is the
most likely. Me? I am looking for a Green Italian car to experiment on.

Oh, the make? I do't want to upset Fiat so I won't tell you..:-)

Regards to all
Tim

RE: Acoustics Test

[Flinders, Randall]

Ed,

Check with John Downs at dB Sound Labs, located in Vista, California.  He   
may be able to assist you.

He can be reached at (760) 940-4216.

Regards,


Randy Flinders
EMC Test Engineer
Emulex Network Systems Corp.
randall.flind...@emulex.com
www.emulex.com
(714) 513-8012
Fax: (714) 513-8265

 --
From:  ed.price
Sent:  Wednesday, June 10, 1998 11:30 AM
To:  emc-pstc
Subject:  Acoustics Test

 
Hi All!

Can anyone recommend an environmental lab in the San Diego Cal area which
does acoustic testing? I have a need to measure some little fans down to
about 30dBA, and my chamber can't yield any quieter than around 43dBA.

Thanks!
Ed
 --
Ed Price
ed.pr...@cubic.com
Electromagnetic Compatibility Lab
Cubic Defense Systems
San Diego, CA.  USA
619-505-2780
List-Post: emc-pstc@listserv.ieee.org
Date: 06/10/98
Time: 11:30:57
 --

Test

[Flinders, Randall]

Test Post



Randall Flinders
Chairman
Orange County Chapter
IEEE EMC Society  

RE: Canada CISPR 22 Conducted Emissions

[Flinders, Randall]

Just a note on this one,

While I agree with the bulk of Mr. Fry's statement, there is one part   
which I feel needs clarifying:

"  the peripheral and cable maximization procedure for CISPR 22-1993."

If you reveiw the FCC rules and regulations, you will find that the rules   
state that if you use the CISPR 22 limits, you must still test to the   
ANSI C63.4 test procedure.  This procedure includes cable maximization   
which differs from the CISPR 22 procedure.  I have conversed with two   
competent bodies on this issue, and have been told that when performing   
emissions testing to the CISPR standard for CE-Mark requirements, it is   
acceptible to use the ANSI C63.4 test procedure when configuring the   
equipment, as long as it is stated as such in the test report / test   
file.  There is a possibility that if the EUT/Peripherals/Cables are not   
configured as described in ANSI C63.4, the FCC could declare the data   
unacceptible and request a retest if the report ever came under review.

I would be interested to hear other comments on this point, as well.

Regards,


Randy Flinders
EMC Test Engineer
Emulex Network Systems Corporation

Phone: (714) 513-8012
Fax: (714) 513-8265
E-Mail: r_flind...@emulex.com
WebSite: www.emulex.com

* opinions expressed herein are personal,
  and in no way reflect the position of Emulex Corporation.


 -Original Message-
From: frydave [SMTP:fryd...@norand.com]
Sent: Thursday, February 19, 1998 4:11 PM
To: emc-pstc
Subject: Canada CISPR 22 Conducted Emissions Answer

 


Subject: Canada CISPR 22 Conducted Emissions Answer
Author:  frydave at NOR2CCPO
List-Post: emc-pstc@listserv.ieee.org
Date:2/19/98 10:39 AM




  Thank you for all responses.


  Clarification for testing and report requirements.  Based on the fact   
the
  European Union, FCC and Industry Canada have endorsed CISPR 22, a test
report
  that covers Global requirements would be as follows.


  The following assumes the use of universal power supplies or supplies   
with
  120-230 volt settings available.


  -Radiated emissions to CISPR 22-1993 using CISPR peripheral and cable
  maximization procedure.  To satisfy the worst case requirements,
  investigative testing must be done at 120 VAC 60 Hz and 230 VAC 50 Hz.   
   

  Perform final radiated emissions testing at the worst case operating
voltage.
   Justify the operating voltage as the worst case configuration within   
the
  text of the report.


  -Conducted emissions is also done to CISPR 22 range of 150 kHz to 30   
MHz
and
  testing must be performed at both 120 VAC 60 Hz and 240 VAC 50 Hz.   
 Again
use
  the peripheral and cable maximization procedure for CISPR 22-1993.   
 Report
the
  conducted emissions for both voltage settings  within the test report.


  Once the European Commission has adopted CISPR 22-1997, all testing   
will
use
  the peripheral and cable maximization procedure outlined within the   
1997
  version, essentially the ANSI C63.4-1992 procedure.


  [hopefully Canada will also adopt the new CISPR 22-1997 requirements   
for
  maximization of cables and peripherals]


  Dave Fry, Sr. EMC Specialist
  Intermec Technologies Corporation
  Norand Mobile Systems Division
  EMC Test Laboratory
  Internet: fryd...@norand.com

RE: FCC Questions.

[Flinders, Randall]

Some notes to add to this discussion:

Not all Class B devices have to be certified (regestered) with the FCC.   
 Many domestically used devices that do not connect to a personal   
computer are subject to VERIFICATION - where the manufacturer simply   
tests the product and keeps the test report on file.  However, there are   
labelling requirements and a statement to the user that must be present   
in the user manual.  The typical cost of the FCC test for a verified   
device is about $1000 - $1600 for one day of testing and $400 for the   
test report.

To determine if your device is subject to Verification, Certification, or   
Notification, you will need to check the FCC CFR 47, Parts 2 and 15.  You   
can purchase Parts 0-19 from your local government Bookstore, for about   
$35.00.  There are bookstores all over the country, however, here is the   
Los Angeles store phone number: (213) 239-9844.  The document is FCC Code   
of Federal Regulations 47, Parts 0-19.


 -Original Message-
From: Jon Bertrand [SMTP:j...@cirris.com]
Sent: Friday, February 20, 1998 9:13 AM
To: emc-pstc
Subject: FCC Questions.

 
   

   

 Hello Everyone,
   

 A lot of "budding midnight designers" ask these questions on the
 microcontroller newsgroups so I thought I'd ask them here - and   
learn
 something :)
   

 (If I've missed some FAQ that covers this please let me know.)
   

 1)  Say I'm building some microcontroller based widget in my home
 business that runs model trains (or whatever).  It's not an   
intential
 transmitter, its typically used in the home.  And I want to sell   
them.
 Do I need some FCC approval.
   

 Specifically do I need to:
   

 1.a)  Spend money having someone test emissions.
   

 1.b)  File some paperwork with the FCC.
   

 2)  If I don't have the money for testing - but I really do know how   

 to keep my microcontroller quiet (i.e I know loop area, di/dt, and
 maybe even have done lots of other 'approved' products)  - and a
 little in-home testing shows it doesn't bother the rabbit ears or
 show-up on the AM or FM radio.  Would I be in violation of some law   
if
 I just sold the darn thing.
   

 2.a)  Would I be in violation if it really was quiet to CISPR (i.e.
 would have passed).  (i.e. is there now a CE mark like compliance   
that
 lets me self declare and assert who's responsible).
   

 3)  How does the FCC verify that I don't pollute the EM band - do   
they
 random sample train widgets or wait for someone to complain.
   

 Thanks,
   

 Jon Bertrand
 j...@cirris.com
   

Official Journal

[Flinders, Randall]

Greetings and Happy Holidays!

Is anyone aware of a FUNCTIONAL web site where I can access an updated   
copy of the EC Official Journal?  Also, I am currently looking for a   
service which can keep me updated on changes to the OJ and the Norms.   
 Any information on these subjects would be greatly appreciated!

Regards,


Randy Flinders
EMC Test Engineer
Emulex Network Systems Corporation

Phone: (714) 513-8012
Fax: (714) 513-8265
E-Mail: r_flind...@emulex.com
WebSite: www.emulex.com

* opinions expressed herein are personal,
  and in no way reflect the position of Emulex Corporation.

EN standards

[Flinders, Randall]

Greetings, and Happy Holidays to all!

Can anyone recommend a GOOD supplier for the purchase of EMC Standards?   
 I am specifically looking for all of the EN standards, along with the   
various global emissions standards.  I have ot been able to find one   
source who offers all of the standards I need.

Thanks!



Randy Flinders
EMC Test Engineer
Emulex Network Systems Corporation

Phone: (714) 513-8012
Fax: (714) 513-8265
E-Mail: r_flind...@emulex.com
WebSite: www.emulex.com

* opinions expressed herein are personal,
  and in no way reflect the position of Emulex Corporation.

RE: TAIWAN

[Flinders, Randall]

Brian,

You can check  the BCIQ website for information on Taowan requirements   
at:

www.moeabciq.gov.tw


hope this helps!


Regards,


Randy Flinders
EMC Test Engineer
Emulex Network Systems Corporation

Phone: (714) 513-8012
Fax: (714) 513-8265
E-Mail: r_flind...@emulex.com
WebSite: www.emulex.com

* opinions expressed herein are personal,
  and in no way reflect the position of Emulex Corporation.


 --
From:  Brian Harlowe[SMTP:bharl...@vgscientific.com]
Sent:  Friday, September 19, 1997 1:56 PM
To:  emc-pstc
Subject:  TAIWAN

 
Hi
I am a new subscriber from the U.K a friend of Chris Dupres.

My question is does anyone have any new/up to date info on the EMC
situation in Taiwan.

Brian Harlowe
Senior Project Engineer
VG Scientific

COMB Generators

[Flinders, Randall]

Hello All!

I am hoping that someone can help me out here.  We are looking for a   
site-reference COMB generator for site correlation and site performance   
verification.  I have used these devices in the past and found that (at   
least the ones I used) they tend to provide unreliable output.  I am   
looking to find a Calibrated source that provides emissions from 30 MHz   
to 5 or 10 GHz.  The unit needs to be calibrated with reference to   
Frequency stability and Amplitude stability.

Any information you can provide would be greatly appreciated.  I will   
summarize and post the responses received.   Thanks!

Regards,


Randy Flinders
EMC Test Engineer
Emulex Network Systems Corporation

Phone: (714) 513-8012
Fax: (714) 513-8265
E-Mail: r_flind...@emulex.com
WebSite: www.emulex.com

* opinions expressed herein are personal,
  and in no way reflect the position of Emulex Corporation.

RE: Antenna Calibration/Site Attenuation

[Flinders, Randall]

Ed brings up a good point.  This forum is designed to allow   
communications between EMC and Product Safety professionals who are   
looking to help each other in the interest of the advancement of the   
compliance industry.  If there is a certain test house or equipment   
manufacturer that provides inadequite services or products, why shouldn't   
that be disclosed on this forum?  Why would anyone want me to find out on   
my own that a certain manufacturer has probelms with Biconical Antennas?   
 It seems to me that an open channel of communication would help convince   
the manufacturers or service providers in the industry who are lacking to   
shape up.  Is it simply an issue of fear of litigation?

Regards,


Randy Flinders
EMC Test Engineer
Emulex Network Systems Corporation

Phone: (714) 513-8012
Fax: (714) 513-8265
E-Mail: r_flind...@emulex.com
WebSite: www.emulex.com

* opinions expressed herein are personal,
  and in no way reflect the position of Emulex Corporation.


 --
From:  ed.price[SMTP:ed.pr...@cubic.com]
Sent:  Tuesday, August 26, 1997 8:32 AM
To:  UMBDENSTOCK, DON
Cc:  'EMC-PSTC Discussion Group'
Subject:  Re: Antenna Calibration/Site Attenuation

 

 --- On Tue, 26 Aug 1997 08:12:00 -0400  "UMBDENSTOCK, DON"
 wrote:
>
> Great dialog, just the path that I was hoping would develop.
>
> One thing I have learned since the question was first asked, all
> biconical antennas are not made equal.  The original antenna calibrated
> at an outside test organization, exhibited a 5 dB difference between   
the
> vertical and horizontal polarizations at 3 meters in the frequency   
range
> of 30 - 50 MHz.
>
> Another antenna subsequently calibrated at the same organization had
> less than 1 dB difference between v and h, 1m and 10 m.  This outcome
> was more in line with the expected outcome of the calibration per C63.5
> which stated "minor variations with polarizations and geometries"   
 where
> geometries is understood to mean test distances.
>
> Don Umbdenstock
> Sensormatic

 ---End of Original Message-
Don:

 Not meaning to single you out, but your post tweaked a concern of mine.
 Are we all operating in a sense of fear in this forum? Do we really have   
to
obfuscate the facts by referring to an "original antenna" and "another
antenna"?
 Or am I the only one who would like to know exactly which antenna and   
test
lab that you're talking about?

Ed

 --
Ed Price
ed.pr...@cubic.com
Electromagnetic Compatibility Lab
Cubic Defense Systems
San Diego, CA.  USA
619-505-2780
List-Post: emc-pstc@listserv.ieee.org
Date: 08/26/97
Time: 08:32:35
 --

RE: Which EMC Directive Standards might

[Flinders, Randall]

Bob,

Unless I am overlooking something, wouldn't your unit be classified as   
ISM equipment?  (Industrial, Scientific, and Medical).  You would   
probably want to apply EN55011 Class A and EN50082-2.

Regards,


Randy Flinders
EMC Test Engineer
Emulex Network Systems Corporation

Phone: (714) 513-8012
Fax: (714) 513-8265
E-Mail: r_flind...@emulex.com
WebSite: www.emulex.com

* opinions expressed herein are personal,
  and in no way reflect the position of Emulex Corporation.


 --
From:  Emctest[SMTP:emct...@aol.com]
Sent:  Tuesday, August 19, 1997 6:01 PM
To:  emc-pstc
Subject:  Which EMC Directive Standards might apply here?

 
Good Day List,

I am trying to determine what tests apply under the EMC
directive to a piece of chemistry lab equipment.  The device
is a small table-top "agitator" to mix up containers of "goop".
(note my chemistry terminology is limited.)

The device in question has a variable speed 24VDC motor
controlled by pulse width modulation.  The PWM chopper
operates around 20 kHz.  The device plugs into a wall
outlet (120VAC or 240VAC) There are no microprocessors, or
any digital electronics in the device.

My experience has been in ITE testing, using the ITE emissions
standard and the Generic Immunity Standard.  I expect the
Generic standards (emissions & immunity) would apply to the
"goop mixer".  Does this sound correct?  Does the Generic
emissions standard essentially boil down to EN 55022?

I suspect this last question may be slightly controversial:
Assuming that EN 55022 applies, would this be a Class A or
Class B device?  The device is sold only to educational /
research facilities, not the general public.

Any opinions would be most appreciated.

Thanks in advance,
Bob Sykes

RE: test equipment

[Flinders, Randall]

Greetings All!

Just a quick note on test equipment..Be careful if you come accross   
HP Spectrum Analyzers for sale, make sure you purchase from a reliable   
source.  There have been several recent robberies at local test labs,   
where ony HP 8566Bs were taken.  So,  there are stolen units floating   
around out there!


regards,


Randy Flinders
EMC Test Engineer
Emulex Network Systems
 --
From:  Jim Bacher[SMTP:j...@mmsday.com]
Sent:  Tuesday, August 12, 1997 7:40 AM
To:  emc-pstc
Subject:  Re: test equipment

 

A friend of mine is getting out of the EMC Business and has all of his
equipment up for sale.  His name is Dick Heaton.  His company is
Midwest EMC Measurements.  He can be reached at 937-667-3467 Voice or
937-667-6180 fax.

Jim Bacher

Senior Engineer,  Monarch Marking Systems, Inc.
email: j...@mmsday.com  voice: 1-937-865-2020 fax: 1-937-865-2048

RE: test equipment

[Flinders, Randall]

John,

Here are some of the new/used test equipment suppliers which we have used   
in the past.  I hope this is what you were looking for!

Regards,


Randy Flinders
EMC Test Engineer
Emulex Network Systems Corporation

 --  
 --

GE Captial
Test equipment Management Service
1-800-GE-RENTS (1-800-437-3687)

Test Equity
1-800-570-3457
www.testequity.com

Metric Equipment
Sunita Vasisht, Sales Represetative
1-800-432-3424

Telogy
Steve Unszusz, Equipment Management Consultant
1-800-835-6496





 --
From:  jschippanoski[SMTP:jschippano...@sstech.on.ca]
Sent:  Friday, August 08, 1997 1:28 PM
To:  emc-pstc
Subject:  test equipment

 

 I'm looking for low end new/used equipment to set up a small test   
lab
 for radiated emissions.  Any names of  suppliers of such equipment   
in
 North America would be greatly appreciated.  Specifically, I am
 looking to purchase a spectrum analyzer and antenna that would be
 acceptable for pre scans before going to a registered lab.
   

 Any suggestions for equipment is greatly appreciated.
 Thanks in advance
   

 John Schippanoski
 jschippano...@sstech.on.ca

RE: ERS (Emissions Reference Source)

[Flinders, Randall]

Greetings!

In the past I have used Com-Power COMB Generators for Site Reference   
Readings.  They offer more than one model, with different step rates and   
Frequency ranges.  The models I am aware of are:

Model: CG-501, I MHz Step, 30-1000MHz
Model: CG-505, 5 MHz Step, 30-1000MHz
Model: CG-515, 1 or 5 MHz step switchable, 30-1000MHz
Model: CG-520, 20 MHz Step, 30-4500MHz.

My catalog states that these units run $1100 for the 501 and 505, and   
$1400 for the 515 and 520.  I have used these models in the past wth good   
results.  my catalog is relatively old, so you might want to call   
Com-Power to get the latest prices and available models.  They are at:

Com-Power Corporation
(714) 587-9800
(714) 587-9960 (FAX)
www.com-power.com


Hope this is helpful!


Randy Flinders
EMC Test Engineer
Emulex Network Systems

*note - The opinions expressed herein are personal and in no way reflect   
the position of Emulex Corporation.
 --
From:  Nick Evans[SMTP:nick_evans_gene...@msn.com]
Sent:  Tuesday, August 05, 1997 1:54 PM
To:  emc-pstc; YoonHoe LOKE
Cc:  yhl
Subject:  RE: ERS (Emissions Reference Source)

 
We have a LaPlace Instruments ERS.  The advantage of it is that it is   
cheap
compared to alternatives such as York University's CNE.

The unit is a comb generator type device providing 2MHz spaced output.   
 It is
specified as providing output across the entire range from 30MHz to 1GHz   
but
in fact signal strength is very limited above 900MHz and almost nothing   
above
950MHz.

We use it for comparison work between our calibrated OATs and chamber and   

other sites.  We also use it for daily confidence checks on our emissions   

setup.

The unit is supplied with calibration data which is supposedly traceable   
back
to NPL in the UK but I would not use this data for any kind of site
calibration.  In fact, the calibration data that was supplied with our   
unit
was incorrect (correct figures were supplied a month or two after   
purchase
with no prompting from us).

The biggest problem with the unit is its very limited battery life (about   
one
hour on a full charge we have found) with quite a lengthy charging time   
(8
hours or so).

In summary, you get what you pay for I guess, I have used the York CNE   
and it
is much more usable with significantly longer operating time (4 hours or   
so I
think) but it is 4 times the price of the ERS.   For first step   
comparison
work and confidence checking the ERS is fine and we are quite happy with   
our
unit but we do use it for a specific 30 minutes a day maximum for   
confidence
check only.

Hope this helps.

Best Regards

Nick Evans
Director
Genesys IBS Ltd
Worldwide Product Compliance & Localisation
Tel:  +44 1600 710300
Fax: +44 1600 710301
Mobile: +44 385 367348  (GSM)
E-mail: nick_evans_gene...@msn.com (data transfer limit: 2Mb)
Web: Http://www.gentel.co.uk/genesys


 --
From:  owner-emc-p...@majordomo.ieee.org on behalf of YoonHoe LOKE
Sent:  05 August 1997 06:25
To:  emc-p...@majordomo.ieee.org
Cc:  y...@cpm.com.my
Subject:  ERS (Emissions Reference Source)

Hello all,

Would appreciate some feedback from anyone who has used an ERS
(Emmissions Reference Source). Laplace Instruments sells one.

Thank you in advance,
Mr. YH Loke
Computer Protocol Malaysia

RE: Interpretation of IEC 1000-4-4

[Flinders, Randall]

Hi Geoffrey,

You pose a good question with regard to EFT testing.  We have been over   
this one in the past, and after consulting with several experts, we have   
come up with the following:

Although many commercial test labs recommend that you test all possible   
line coupling combinations (for a total of 7 if you are dealing with   
singe phase.), We have detirmined that Common mode testing is all that   
really needs to be accomplished.  The thoughts behind this are that due   
to the rise times involved with the pulses, capacitive coupling within   
the power cable and power supply converts the differencial bursts to   
common mode anyway.  We do however, test the lines indivdually as well,   
for the simple reason of satisfying the demands of our customers.  What   
we end up testing is 4 combinations; L1, L2, GND, and Common mode(all   
three).

I would be interested to hear other's thoughts on this subject...



Regards,

Randy Flinders
EMC Test Engineer
Emulex Network Systems
r_flind...@emulex.com

* Opinions expressed are personal and in no way represent the position of   
Emulex Corporation.
 --
From:  Geoffrey Skanes[SMTP:ems...@nortel.ca]
Sent:  Thursday, July 31, 1997 12:53 PM
To:  emc-pstc
Subject:  Interpretation of IEC 1000-4-4

 

Hi:

I've recently had a need to re-visit the application of EFT pulses on AC
power cords.  Although the current version of the std. (1st ed.,1995)
discusses
assymetric application of the EFT pulse (Section 6.2), the std does not
explicitly describe that the pulse application must be done on one   
conductor
at a time.  Considering Figures 4 and 11, it would appear that pulses can   
be
applied to the protective earth (ground).  Question is, is simultaneous
application of the burst (in common mode) a valid and necessary test   
case?

I believe the answer is yes for the following reasons:
  - I/O lines are exposed to EFT via the capacitive coupling clamp in   
true
common mode, so why would power cords be treated differently?
  - for the same reasons that I/O cables are exposed to common mode burst
events in reality, power cords should be exposed to common mode   
events.
  - A number of commercial stds, i.e. ETS 300-342-2, describe common mode
application of the burst.

Anyone else with comments on this?

Regards,

Geoff Skanes
EMC Engineer
Nortel Technology
RTP, NC

RE: Signatures

[Flinders, Randall]

Can anyone tell me how to create such a signature file with Windows   
Messaging?

Thanks!



Randy Flinders
EMC Test Engineer
Emulex Network Systems
r_flind...@emulex.com
 --
From:  paz[SMTP:p...@world.std.com]
Sent:  Sunday, July 20, 1997 9:43 AM
To:  emc-pstc
Subject:  RE: Signatures

 


On Wed, 16 Jul 1997 ed.pr...@cubic.com wrote:

: --- On Tue, 15 Jul 97 16:33:00 PDT Ghery Pettit
:  wrote:
: > All,
: >
: > I have noted that many posters put their complete name and contact
: > information at the end of messages and others simply sign their first
: > name. While I can dig out the sender's e-mail address in the header
: > information, this is provided separately under cc:mail and is a
: > nuisance. I would like to request that you provide all necessary
: > information to allow someone to reply privately when necessary.   
Thanks
: > for your consideration of this request.
: >
: > Ghery S. Pettit
: > Senior EMC Engineer
: > Intel Corporation
: > ghery_pet...@ccm.dp.intel.com
: > (253) 371-5515
: >
: >
:
: ---End of Original Message-
: Ghery:
:
:  With Netmanage's Chameleon, it's a little easier for me. But, I fully
agree that a decent signature file should be tagged on each message. All
email programs that I have seen will allow you to both create a unique
signature file, and then have it automatically attached to every outgoing
message. It's surprising that many users don't even know they have this
capability!
:
: --
: Ed Price
: ed.pr...@cubic.com
: Electromagnetic Compatibility Lab
: Cubic Defense Systems
: San Diego, CA.  USA
: 619-505-2780
: Date: 07/16/97
: Time: 17:01:22
: --


Several years ago, there was a rule of thumb that internet email users
were encouraging each other to abide by. This was, to limit one's .sig
file to 4 lines or less. There were many reasons for this. Like you
mentioned about people not knowing things, many people were unaware that
some email services are provided such that the user is charged on a
per-byte or per-packet basis; the more email that arrived in the user's
inbox, the larger his/her bill for internet service would be that month.
On other mail lists, these people would write in and say, for example,
"Thanks for your posting, but could you please do away with the 'cute'
ASCII graphic? We've all seen it hundreds of times already, it doesn't
add to the content of your posting, and I have to pay extra for it every
time you post it!" Many people (like me) got so tired of reading the same
pretentious stuff in .sigs that we just abandoned .sigs altogether. And
because the user of the .sig only sees it once (i.e., when composing it),
s/he becomes unaware of how many times the same information is sent to
the very same people.

Any smart mailer will insert the appropriate reply address without any
thought on the part of the user.

That said, I think your request is reasonable. I still won't auto-append
a .sig file, but it can still be useful.

cheers -
=paz=
P. Zimmermann
p...@world.std.com

Re: Graphics in posts

[Flinders, Randall]

I support attached graphics files.  Technology is fueled by the need to keep 
up, if we limit ourselves to the lowest common denominator, then the 
progress of technology is slowed down trmendously.  It seems to me to be a 
shame to not use the technology available to us because some people may have 
not have access to it.  Most ISPs ask for your approval before downloading 
attachments, due not only to time concerns but also to virus infection 
concerns.  As for format - I feel you should attach what ever type of 
document you can view.  If some EMC-PSTC subscribers cannot view your post 
because they don't have Word 6.0 or a .gif viewer, that is their concern. 
 File size limitations are a good idea, but 50K seems a little on the small 
side.  I would think 350K would be more prudent.

What it comes down to is this - If you don't want the attachment, then don't 
download us.  But don't limit my resources because you don't want the 
attachment.

Randy Flinders
EMC Test Engineer
Emulex Network Systems Corporation
r_flind...@emulex.com

* Opinions expressed are personal, and in no way reflect the position of 
Emulex Corporation.
 --
From: Karthik Ethirajan
To: DFerris; emc-pstc
Cc: Peter.Tarver.ptarver
Subject: Re: Graphics in posts
List-Post: emc-pstc@listserv.ieee.org
Date: Thursday, July 17, 1997 10:16AM

I support the idea of allowing attachments in this mailing list.  Regarding
the
size limitations I feel 50KB is too less, as some of the .BMP bit-map files
averages about 300-350KB

 -Karthik


   
 ---
 -
Karthikeyan Ethirajan
Applications Engineer   (408) 934-3181

California Micro Devices   215 Topaz Street
karth...@calmicro.comMilpitas, CA 95035
   
 ---
 --

>>>  07/16 12:30 PM >>>
In a message dated 97-07-16 11:27:44 EDT, Peter Tarver writes:

<< However, I do see a problem with sending even small graphics in e-mail.
 Many of the subscribers to this listserver do not have T3 pipes coming
 into their businesses or subscribe through accounts that are through AOL
 (the very definition of slow), Compuserve, etc. (all ISPs are not
 equal), or have a slow modem with max. connection rates less than
 14.4kbps. >>

For what it's worth, I use both AOL and CompuServe with a 14.4kbps modem.  I
do this at home, during the evening "online rush hour".  The speed is
tolerable.  In addition, AOL delivers the message portion first, downloading
the attached file only when commanded to do so.

I believe the advantage in clarity and detail well justifies an occasional
larger message.  Some size limit should be set.  May I suggest 50 Kbytes as 
a
reasonable limit?

Regards,
Dewayne Ferris
Cosworth Engineering, Inc.
Novi, Michigan (USA)
  


  


  


  


  


  


  


  


  


  


  


  


  


  


  


  


  


  


  


  


  

RE: ESD Simulators

[Flinders, Randall]

We also use the Schaffner NSG 435.  At my previous employer (an independent 
test lab), I had the opportunity to use several different ESD simulators, 
and have to say that of all the guns I have used (including Keytek and Andy 
H.), I have found the Schaffner to be the best.  The only negative I have 
found with the Schaffner is that over time the contact discharge probe seems 
to want to crack, and then finally, break.  However, this has happened only 
after about 3 years of use, and new probes are easily obtained from 
Schaffner.

 - Randy Flinders
  EMC Test Engineer
  Emulex Network Systems Corporation
 --
From: Jon Bertrand
To: emc-pstc
Subject: RE: ESD Simulators
List-Post: emc-pstc@listserv.ieee.org
Date: Monday, July 14, 1997 4:06PM


 If talking about ESD guns is okay then:

 We've been using a Schaffner NSG 435 for about four years now.  Three
 of us [engineers] use the gun, we all like it a lot.  My impression is
 it's easier/faster to use on the IEC 1000 tests then the guns that the
 local test sites use.

 It's the best $8000 we ever spent.

 What would you like to know about it?

 Jon Bertrand
 j...@cirris.com

RE: Distance of Measurements, 55011

[Flinders, Randall]

Eric,

You are correct in your evaluation of EN 55011 (Cispr 11).  Keep in mind 
that the situation of not allowing distance correction is only found in 
Cispr 11, NOT Cispr 22.

In reference to this specification, I had the opportunity to converse with 
several Competent Bodies in reference to Cispr 11 Class A test distance 
requirements.  All three of the Competent Bodies I spoke to confirmed that 
they will accept extrapolated Cispr 11 data measured at 10 meters.  They all 
cited that the specification is being re-vamped, and the 30 meter distance 
requirement is expected to be changed.

Eric brought up a good point, and I would be interested to hear if anyone 
has run into problems due to this 10m/30m CISPR 11 situation.

Sincerely,


Randy Flinders
EMC Test Engineer
Emulex Network Systems


* opinions expressed are completely personal, and do not reflect the 
position of Emulex Corporation.
 --
From: Eric Lifsey
To: emc-pstc; treg
Subject: Distance of Measurements, 55011
List-Post: emc-pstc@listserv.ieee.org
Date: Monday, June 16, 1997 9:36AM


   Shall I muddy the issue further...let me address an interesting
   section of EN 55011:1991.

   But first; for reference; Clause 5 of EN 55011 lists the limits and
   measuring distance for Class B at 10 meters, Class A at 30 meters.

   Section 8.1.3 entitled Radiation Measurements (9 kHz to GHz) speaks
   to the issue of high ambients and moving to a shorter distance to
   take measurements.  However, the wording (IMO) indicates that the 20*
   Log(D/d) correction is not allowed.  Let me quote:

  "Note - Due to the unpredictability of the relationship between
  the measured values of the electromagnetic radiation disturbance
  and the distance from the equipment under test no correction is
  allowed for in the limits when measurements are made at a closer
  distance."

   "no correction"

   The key implication (IMO again) is that running Class A measurements
   at 10 meters must meet the limits specified at 30 meters!  Please
   correct me (pun) if I'm wrong!

   To my knowledge, many labs are doing Class A measurements at 10
   meters.  (IMO, 10 meters is better because most sites need an
   additional RF preamp for 30 meter sensitivity; if not handled
   carefully, measurement uncertainty is worsened.  Of course, EUT size
   and other factors exist.)

   CISPR-11 is due for an overhaul (and for other interesting problems
   too) and I hope they fix this one while they're at it.

   Regards,
   Eric Lifsey
   National Instruments

RE: Distance of Measurements

[Flinders, Randall]

Richard and Robert:

I agree with Richard, although I would recommend the opposite.  I would Test 
at 10 meters, and bring the antenna in to 3 meters if I come across 
frequencies where ambients are interfering.  This provides most data at the 
specified test distance, while allowing for correction of signals that 
appear near ambients.

Randy Flinders
EMC Test Engineer
Emulex Network Systems
 --
From: WOODS, RICHARD
To: emc-p...@ieee.org; robert.m...@engineers.com
Subject: RE: Distance of Measurements
List-Post: emc-pstc@listserv.ieee.org
Date: Thursday, June 12, 1997 7:07AM

10m is the standard, but other distances are allowed. If there is ever a
problem, data taken at 10 m will be used to judge your equipment. As a
practical matter, we test our equipment at 3m because of ambients. My
recommendation is to test at 10 m unless there are circumstances that
prevent it or complicate the measurements. If there are strong ambients,
a test at 10m may take longer which would translate into cost. You can
always test at 3m and then retest signals with minimal margin at 10m.
 --
From: robert.m...@engineers.com
To: emc-p...@ieee.org
Subject: Distance of Measurements
List-Post: emc-pstc@listserv.ieee.org
Date: Wednesday, June 11, 1997 4:11PM


For measuring emissions per CISPR 22B  what is the proper distance for
the placement of the antenna?

Is it 3m?  or 10m?

  [I'm running across reputable labs that claim there is nothing wrong
  with measuring everything at 3m, just like FCC B.]

 - Robert -
  robert.m...@engineers.com
   AJM Electronics

 ---
 ~ OLX 2.1 TD ~ You'd be surprised how much it costs to look this cheap.

Taiwan EMC Requirements

[Flinders, Randall]

Hello all!

Does anyone have information on the current EMC/Product Safety Requirements 
for ITE equipment marketed in Taiwan?  Any information would be greatly 
appreciated!

Thank you,


Randy Flinders
EMC Test Engineer
Emulex Network Systems

r_flind...@emulex.com

FW: DoC - Provisional Acceptance

[Flinders, Randall]

 --
From: Flinders, Randall
To: MLWaldron
Subject: RE: DoC - Provisional Acceptance
List-Post: emc-pstc@listserv.ieee.org
Date: Monday, June 09, 1997 1:02PM


 --
From: Flinders, Randall
To: MLWaldron
Subject: RE: DoC - Provisional Acceptance
List-Post: emc-pstc@listserv.ieee.org
Date: Monday, June 09, 1997 1:02PM

Keep in mind that the DOC procedure is not the only way to get FCC approval. 
 Although only about half of the US labs have accreditation by the two 
bodies, the FCC will accept data for Class B Certification (through the old 
application of Equipment Authorization process) from any site registered 
with the FCC.  For a on-line listing of all FCC registered labs, you can 
call the FCC Public Access Link at (301) 725-1072.  (Up to 9600 baud 
supported.)

After checking with local labs in my area, I found that most of them are 
NVLAP approved and offer quick availability of lab time.  I have not heard 
of or expect the FCC to extend the provisional acceptance.  If there are no 
approved labs in your area, and you are seeking DoC FCC Certification, then 
you may want to consider a long distance relationship with a reputable lab.

Sincerely,


Randy Flinders
EMC Test Engineer
Emulex Network Systems

note: The opinions expressed above are personal and in no way reflect the 
views of Emulex Corporation.
 --
From: MLWaldron
To: emc-pstc; treg
Subject: DoC - Provisional Acceptance
List-Post: emc-pstc@listserv.ieee.org
Date: Sunday, June 08, 1997 10:03AM

Has anyone heard whether the FCC is considering extending the provisional
acceptance of EMC laboratories past the August 19, 1997 effective date?

I have heard that less than half the labs in the United States in existance
prior to the rule changes ( about 250 labs) will have been accredited by the
two accerditation bodies by 8/19/97. Is this felt to be a sufficient number
of laboratories to effectively provide the manufacturers and suppliers of
personal computers and peripherals with reports to support their DoC's?

The FCC in their original Notice of Proposed Rule Making (ET-Docket No.
95-19) stated that because of the few number of labs that had NVLAP approval
(20) at that time there would be a two year grace period. Many of the
comments that were received by the FCC from manufacturers and laboratories
alike felt that a two year or longer transition period would be needed. This
topic was brought again up in the Report and Order on this same subject at
point 32. The FCC did not address that topic officially until they released
the Public Notice of July 16, 1996.

At last check, both accreditation bodies are taking bookings for 
laboratories
to be fully accredited in the October to November time frame. NVLAP has 
about
86 laboratories accredited with 30 or so in the queue and A2LA has 8 labs
accredited with about 36 in the queue.

Again, will there be a sufficient number of accredited laboratories to
accomodate the requirements of the manufacturers and suppliers of personal
computers and peripherals?

Thank you,
Please send responses to:
mlwald...@aol.com

Small 1000-4-3 chamber

[Flinders, Randall]

Hello everyone,

An associate of mine is looking for a small chamber to do 1000-4-3 radiated 
immunity testing.  He was hoping to find a portable chamber with a 1 meter 
cube of usable space.  Does anyone have any experience with such chambers? 
 I have seen some stripline units that claim to fit his needs, but I have 
never known anyone using stripline chambers for this type of testing.  Any 
thoughts or ideas on this subject would be helpful!

Thank you,


Randy Flinders
EMC Test Engineer
Emulex Network Systems






* Opinions expressed herein are strictly personal and in no way reflect the 
position of Emulex Corporation in any matter.