Hi Ned,
I think everyone is asking the same question. You have received the correct
interpretation from the FDA. The 2nd edition is effective as of 10-2001 and
if you claim compliance with it on your 510k, the FDA will not come back and
ask for more information regarding EMC. They are however
I read in !emc-pstc that Koh koh...@starhub.net.sg wrote (in
3c5ff8b2.6c99c...@starhub.net.sg) about 'Voluntary EN standards', on
Tue, 5 Feb 2002:
Hi group,
My company had just OEM a speaker product from another company, I had
request them to provide the following EMI/EMC test report.
EN55013,
I read in !emc-pstc that Brian O'Connell boconn...@t-yuden.com wrote
(in f7e9180f6f7f5840858d3db815e4f7ad1f2...@cms21.t-yuden.com) about
'EMC stds', on Tue, 5 Feb 2002:
Current D of C for a component SMPS lists basic stds (e.g., 61000-4-x), but
customer wants product family stds listed.
Based on
I read in !emc-pstc that Ken Javor ken.ja...@emccompliance.com wrote
(in b8855fd1.e9f%ken.ja...@emccompliance.com) about 'Conducted noise
emission diagnosis device', on Tue, 5 Feb 2002:
Later he built
and patented its sibling, a cmrn.
I suppose I shouldn't REALLY be surprised that one can
I read in !emc-pstc that cherryclo...@aol.com wrote (in 17b.31edfe2.299
12...@aol.com) about 'SV: Generic emissions - EN 61000-6-3', on Tue, 5
Feb 2002:
Where the electromagnetic environment or proximity to sensitive devices
(such as radio receivers) for the intended use of a product is
Ned,
At a recent AAMI/FDA conference I asked Jeffery Silberberg of the FDA a
similar question and his response was that the new standard would apply upon
the date of recognition by the FDA. As a matter of business, I have been
using the new standard (in Draft form) for the last year or two. I
Agree, worthwhile.
All the newspaper articles in the Career section of the newspapers say that
after being laid off to take off a few weeks, gain bearings, then look for
your new position. I totally disagree. I say take 20 minutes, shake your
head, and go for new places as agressively and
Thanks to everyone that responded to my query. Here is my original question
and a synopsis of the replies.
Question:
We currently design our products to comply with the Class B emissions limits
of EN 55022, but I am getting a lot of pressure from engineering to allow
the limits to be raised to
Hi George, All,
Actually, Clayton did not completely retire but rather moved to
Mercer University where he is:
Sam Nunn Eminent Professor of Aerospace Engineering and Professor of
Electrical and
Computer Engineering. I have the pleasure of working with Clayton on
some IEEE EMC
Society
Basic standards do not provide the presumption of compliance with the
essential requirements. Only generic, family or product standards can do
that. If you component is legally subject to a directive, then you must
apply the appropriate generic, family or product standard or use the
Tecnical
I have found that many OEM suppliers are not fully aware of EU compliance
issues. Compliance with all ENs is voluntary. However, compliance with the
standards provides a presumption of compliance with the essential
requirements of the EMC Directive. Compliance with the essential
requirements is
Greetings All,
Actually, Clayton did not retire but rather moved to Mercer
University where he is the
Sam Nunn Eminent Professor of Aerospace Engineering and Professor of
Electrical and
Computer Engineering. I work with Clayton on some IEEE EMC Society
activities and
always enjoy the
Art,
What a nice thing to do! I am just getting ready to pick up my stuff from
the office, and then ... Why wait for the outplacement firm? Forward
momentum!
Cortland
(I cannot speak for Alcatel
They cannot speak for me;
OF all that we might choose to say,
The other now is free!)
I read in !emc-pstc that John Woodgate j...@jmwa.demon.co.uk wrote (in
ke$8bqa3m8x8e...@jmwa.demon.co.uk) about 'Conducted noise emission
diagnosis device', on Tue, 5 Feb 2002:
If C is the common-mode (CM) component and D is the differential-mode
(DM) component (both in linear units, not
I read in !emc-pstc that John Juhasz jjuh...@fiberoptions.com wrote
(in 2a1845f4cde8d511b4400090279c703b938...@bctexc10.na.ilxi.net) about
'ITE Class A vs B Emissions', on Tue, 5 Feb 2002:
I believe the push to ensure Class B for other than
'heavy' industrial,
'Push' is not the appropriate
Update on Dr. Paul provided by a colleague:
Clayton retired from U of K, however, he resumed his teaching at
Mercer University. Shortly after moving to Georgia and beginning a
teaching position at Mercer, he received an endowed chair, given by
former United States Ga. Senator Sam Nunn at
Hello Cortland et al,
In light of and reaction to the current depressed business cycle - the
Safety Link www.safetylink.com, is offering a new no-charge service
that should be of interest and value to you. A Classified Ads section has
been added; you can find it's link near the top of the
A word about Dr. Paul
From 1981 to 1993 I managed several of our lab functions, including EMC.
At the time, Dr. Paul taught EMC courses at the University of Kentucky,
in Lexington, where our (then) IBM lab was also located. As a result,
we were able to hire Dr. Paul as an EMC consultant
Hi,
I need some help from the EMC experts.
According to FDA Acting Chief of the Brach I am dealing with, since the FDA
has recognized IEC 60601-1-2 Second Edition (October 2001), then ...If they
submit a new 510(k) (or even a modification for an existing device) and we
have recognized the
Hi group,
My company had just OEM a speaker product from another company, I had
request them to provide the following EMI/EMC test report.
EN55013, EN55020
EN61000-3-2, EN61000-3-3
The speaker is mains connected/powered.
They only provided EN55013 report and reply as below regarding the other
Good People of EMC-PSTC:
Current D of C for a component SMPS lists basic stds (e.g., 61000-4-x), but
customer wants product family stds listed.
Based on my limited understanding of ITE EMC stds (55022/4), it would seem
that only referenced basic stds can be listed; and that the product family
Isn't there a another gotcha?
I recall a connection between with the Class A
emissions being coupled to the Heavy Industrial
Immunity standard.
My old company shipped with Class A emissions and
024 as the immunity. We based our decision on our
installed base prior to the EU having acceptable
EM
Hi - I must ask:
Has the CE+CE=CE idea been adopted?
If so then the discussion on emissions levels is moot
as non-compliant products are being released on
the market place anyway.
From: CE-TEST cet...@cetest.nl
Reply-To: CE-TEST cet...@cetest.nl
To: am...@westin-emission.no,
Hi Mat,
The book is:
Introduction to Electromagnetic Compatibility
Author: Clayton R. Paul
The copy that I have is copywrite 1992, John Wiley Sons.
There is a whole bunch of library of congress data...in the front cover.
I'm not sure what is helpful, except for maybe the ISBN which is,
What is that title of the Clayton Paul book?
-Original Message-
From: Chris Maxwell [SMTP:chris.maxw...@nettest.com]
Sent: Tuesday, February 05, 2002 6:16 AM
To: mur...@eel.ufsc.br
Cc: EMC-PSTC Internet Forum
Subject: RE: Conducted noise emission diagnosis device
Hi
I read in !emc-pstc that KC CHAN [PDD] kcc...@hkpc.org wrote (in
sc5ff0d9@smtp.hkpc.org) about 'CISPR 20', on Tue, 5 Feb 2002:
I heard that there wll be some major changes of CISPR 20, 5th edition. Anyone
has ideas the major changes?
The publication is being printed at present. The CDV
Is there a simpler, cheaper way to perform the BER testing for Rx? If given
two computers, the right software, and a simple FSK modulator demodulator,
it seems that they could it done without having to purchase an expensive,
special purpose BER testing device. Those devices seem well equipped
Dear Muriel,
The Differential- or Common-mode Box design is in the IEEE Transactions on
EMC, Vol. 30, No.4,
November 1988, pages 553-560. Figure 2 shows the schematic and Figure 3 has an
inside picture.
The box is very easy to make. It is made from two transformers, two resistors,
and a
Although it can be argued that my products are Class A,
we design our products to meet Class B. I have had the
occassion where I was at the limit and was under pressure
to release the product that I have taken Class A.
Primarily we've designed for Class B as a 'specmanship'
game with the
Hi,
A very descriptive device is presented in the following book:
Power Line Filter Design for Switched Mode Power Supplies.
By Mark Nave.
It is out of print, and if you see a copy for sale, it's worth buying.
He also took out a patent for his device under the following no:
US Patent No:
Hello Richard,
I have never heard of notification in Liechtenstein, you may try to contact
the authorities on:
Amt für Kommunikation
Kirchstrasse 10
Postfach 684
9490 Vaduz
Liechtenstein
Telefon: +423 236 6488
Fax: +423 236 6489
E-Mail: off...@ak.llv.li
Internet: www.ak.li
Hi Muriel,
After I read your reply. I got a little scared. I actually forgot how
I did it. (It has been a few years.) I too have a commercial LISN that
has a switched output. It won't work with the separator.
I had to actually walk over to the lab and pick through the cobwebs to
figure out
Dear Jim
Just a couple of points on your item 2, which you and most others are
probably well aware of anyway...
If you are making 'multifunction' equipment (e.g. a refrigerator with an LCD
display and internet browser) you may have to apply two different
product-family standards. For the
Hi Muriel,
I have the same book by Clayton Paul as it was used as a textbook for a
graduate course in EMC at SUNY Binghamton.
After SUNY Binghamton, I started was working as a design engineer. That
was the year before the EMC directive became mandatory. My boss saw Mr
Paul's book in my
I read in !emc-pstc that Muriel Bittencourt de Liz mur...@eel.ufsc.br
wrote (in 017b01c1adf6$74216430$55ddbfc8@marx) about 'Conducted noise
emission diagnosis device', on Tue, 5 Feb 2002:
I am looking for a device that will differentiate the dominant component
(either
common-mode or
I read in !emc-pstc that am...@westin-emission.no wrote (in LFENJLPMMJB
mhpeibnilkejlccaa.am...@westin-emission.no) about 'SV: ITE Class A vs B
Emissions', on Tue, 5 Feb 2002:
But I also recall that may
test laboratories / notified body classifies class A as a heavy industrial
environment.
I read in !emc-pstc that Enci e...@cinepower.com wrote (in 3.0.6.32.2
0020205082333.00aed...@mail.cinepower.com) about 'ITE Class A vs B
Emissions', on Tue, 5 Feb 2002:
I have often wondered exactly why there are two classes in EN55022. The
limits are pretty similar, does a 13dB difference in
Dear Muriel
Separating CM from DM at the output of a LISN was covered by Michel
Mardiguian and Joel Raimbourg in a paper they presented at the IEEE EMC
Symposium held in Seattle in August 1999, titled: An alternate,
complementary method for characterising EMI filters (Volume 2 of the
Symposium
For export to Europe:
The CISPR22 Class A limits are equal to the
ones for Generic heavy Industrial equipment.
Using (not selling) CISPR22 Class A equipment
in a residential or light industrial equipment
may very well be contrary to the essential
requirements of the EMC directive and the
From chapter 4.1 in CISPR 22:1997: Class B ITE is intended primarily for
use in the domestic environment and my include: - equipment with no fixed
place of use; for example, portable equipment powered by built-in
batteries; - telecommunication terminal equipment powered by a
telecommunication
I have often wondered exactly why there are two classes in EN55022. The
limits are pretty similar, does a 13dB difference in conducted emission QP
limits really make a difference above 5MHz? I know the 23dB difference
5MHz (conducted emissions) helps with products that have a SMPS, for
example.
Hi,
Two good places to start:
LVD:
http://europa.eu.int/comm/enterprise/electr_equipment/lv/stand.htm
Click on LVD standards. It's a big page and takes a while to load.
EMC:
http://europa.eu.int/comm/enterprise/electr_equipment/emc/stand.htm
Click on the List of harmonised standards.
Hi
I heard that there wll be some major changes of CISPR 20, 5th edition. Anyone
has ideas the major changes?
Best Regards
KC Chan
---
This message is from the IEEE EMC Society Product Safety
Technical Committee emc-pstc discussion list.
Visit our
Hi Richard,
It has been a while since I worked with UL 698, but I was involved in some
of the testing that was performed to get Square D Co.'s Haz Loc units
Listed. I witnessed some relatively primitive testing in the basement of
UL's Ohio St. building (before Northbrook UL was in downtown
Hi Richard,
My business/commercial/industrial ITE clients have usually aimed for Class B
but if they did not get there, Class A hass always been accepted by their
customers. Most customers do not know the difference very few will insist
on Class B (tending toward laoratories and such locations
Hello Group,
I am looking for a device that will differentiate the dominant component
(either
common-mode or differential-mode current) in the total conducted noise
emission
current of a product measuring through its' power cord using a LISN.
This device can be called common/differential mode
Group,
Can anyone on this board help me to find out which standards (emission
immunity) to apply to test a Stand Alone SMPS unit for CE marking.
This SMPS is a power source for the Audio Amplifier.
Can I use EN55013 EN55020 standards, since it is an associated equipment of
broadcast
Check out the following URL:
http://www3.jetro.go.jp/se/j/jousa/kikaku/jpbook/index.html
Regards,
+=+
|Ronald R. Wellman|Voice : 408-345-8229 |
|Agilent Technologies |FAX : 408-553-2412
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