AAAXOQwivOsnkHiTt2ByoCkOxVQjOGOjRlivicVgYlN1dz5QXjId9bpa0keWzfVxhl8KPj78uD6-S6nfqRsg=e49e0dc0-96a3-2516-27fa-ee2e8c42b177>
> <https://twitter.com/ElementTesting/>
> <https://elementmaterials.eu.qualtrics.com/jfe/form/SV_3xQqm84s6IydI5D>
>
> *From:* Patrick Lawler [mailto:plawl...@gmail.com
it?
I’ve worked with EMC for tabletop equipment in different industries, but
this is my first time in the automotive industry. I'm anticipating a very
deep rabbit hole.
Thank you,
Patrick Lawler
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Hi Brian,
I wasn't aware of the 'Dia' software until Brent mentioned it. While
looking through the developers site, I saw there are additional symbol
packs already designed that may meet your needs:
http://dia-installer.de/shapes/index.html.en
Regards,
Patrick Lawler
On Thu, May 20, 2021 at 8
energy of a frequency in the range 45 Hz to 65 Hz and to
their type tests only. This publication supersedes IEC 60043 (1960), 60170
(1964) and 60280 (1968).
Patrick Lawler
plaw...@west.net
On Mon, 29 Apr 2002 10:55:57 -0400, Ned Devine ndev...@entela.com wrote:
I can help much
Jim Bacher: j.bac...@ieee.org
All emc-pstc postings are archived and searchable on the web at:
http://ieeepstc.mindcruiser.com/
Click on browse and then emc-pstc mailing list
Patrick Lawler
plaw...@west.net
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For those interested, there was an article in Compliance Engineering in November
1999 comparing CNS 13438:1997 to CISPR 22:1993. It also had some brief comments
on lab accreditation.
The article can be found on the web at
http://www.ce-mag.com/archive/1999/novdec/Lin.html
On Mon, 22 Apr 2002
over the audio range
(20Hz-20kHz)?
snip
Patrick Lawler
plaw...@spamtrap.west.net
(remove spamtrap to reply)
remove spamtrap to reply
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Visit our web
protection. I found a link
using Google that describes the problems [
http://www.kalglo.com/powrline.htm ] but I'm looking for additional links to
specifics or summaries if any one knows of such.
Patrick Lawler
plaw...@west.net
---
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I finally read the bottom of a recent posting, and saw that the EMC-PSTC
discussion forum is now available through a web page.
Many thanks to those who put it together!
Patrick Lawler
plaw...@west.net
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that does not concern them.
I finally found the menu option for this feature and turned it 'Off'!
Patrick Lawler
plaw...@west.net
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Visit our web site
/~ear/prime.html
On Thu, 21 Feb 2002 19:24:56 +0200, Peter Merguerian pmerguer...@itl.co.il
wrote:
Can anyone help identify a laboratory testing to Sanitary Standards for
Level Sensing Devices for Dry Milk and Dry Milk Products, Number 50-00?
Patrick Lawler
plaw...@west.net
of metalic berylium (Be) posing a problem.
Patrick Lawler
plaw...@west.net
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://www.google.com/grphp?hl=en
3) Also try
http://www.highdensitysolutions.com/hdsol/General/TechnicalPapers.html for
Magnetic Components Modeling
Patrick Lawler
plaw...@west.net
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Technical
Does operating frequency affect the issue?
If the radar system is in an official ISM frequency band, use CISPR 11, but if
operating outside the those bands treat is as an RTTE device?
Also, what about the market served? The original poster seems to have a
position with a military contractor.
In a recent posting, someone commented on the possiblity of 'flicker' emissions
(controlled by EN61000-3-3) causing a disturbance in 'victim' equipment.
Would EN61000-4-11 (Voltage dips, short interruptions and voltage variations) be
an immunity spec complement to EN61000-3-3? Or is EN61000-4-14
Sorry for the confusion - I should have started a new thread.
Let me try again.
On Fri, 11 Jan 2002 21:20:44 +, John Woodgate j...@jmwa.demon.co.uk wrote:
I read in !emc-pstc that Patrick Lawler plaw...@west.net wrote (in
d86u3ukalc0klgvpifajq86e13bmrcf...@4ax.com) about 'EN 50141 and EN
If CENELEC has updated a basic test standard (like IEC801-2 being replaced by
EN61000-4-2), but the product standard used for system EMC testing calls out the
old basic test standard number, which one do you use?
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I belive emissions standards were designed to allow proper operation of radios
and televisions with minimal irritation. This would include sound and video
quality. I heard this story a long time ago with respect to FCC limits.
On the other hand, immunity standards were developed so equipment
? Or are
there magnetic loop antennas for some of the test ranges?
I have a hard time imagining E-field measurements below 30MHz at a 3m distance.
Patrick Lawler
plaw...@west.net
On Fri, 21 Dec 2001 10:19:22 -0800, you wrote:
snip
The requirements for EMC of radio equipment in Russia (as well
I've had good results using ferrite cores. They help radiated emissions as
well.
P.S.: I was surprised to see your location. I'll be coming to your city for the
first time on Saturday. This visit caused me to ask the question concerning
snow on OATS sites.
On Wed, 12 Dec 2001 21:50:35 +0100,
I saw some photographs of an enclosed OATS facility in an area subject to snow.
How does snow accumulation on the roof affect performance measurements? Does it
affect the NSA figures?
Is the effect significant enough that attempts are made to keep the roof snow
free? Or does the normal attempt
Are you saying that the results of a 'tuning' style measurement sequence are
different than a 'stepping' style measurement sequence?
On a slightly different note:
The HP 8591EM has the capability of log frequency sweeps without the use of an
external controller. I looked at the X-axis output
It would help if you said what the item was that had the symbol.
The german company Wickmann also has a symbol consisting of the letter W in a
circle. They make fuses, fuseholders, and other circuit protection devices.
Subject: Who or what is W letter in a circle
Date: Mon, 10 Dec 2001
the rectifier), and using a
grounded source at the LISN input degraded its performance.
Patrick Lawler
plaw...@west.net
On Thu, 29 Nov 2001 17:43:35 +, John Woodgate j...@jmwa.demon.co.uk wrote:
I read in !emc-pstc that Peters, Michael mpet...@analogic.com wrote
This sounds similar to the radiated emissions tests following EN55014-1:1997
(emissions for household appliances). The unit of measure is also dBpW.
An absorbing clamp is placed on the AC power cord, and moved along the cord
looking for maximum emissions. A table of correction factors converts
Our company manufactures switching power supplies to EN60950 and EN60601-1
standards, and our safety group looks for these issues.
In fact, I got 'bit' by that same problem last week. Spacing was OK when the
PWB was mounted in the chassis, but when the cover was installed, it failed
The power supply was probably not designed to _filter_ EFT signals, which can
range up to 50MHz. Since power supplies are typically low frequency devices (as
compared to 50MHz signals), it make sense that it was unaffected.
Try using high frequency ferrite cores on the AC and DC lines. The
If product specifications for the LVD are not harmonized when announced in the
OJ, when _are_ they harmonized?
On Wed, 3 Oct 2001 08:24:18 -0400 , wo...@sensormatic.com wrote:
Trevor, the new product specification must be applied by the date of
withdrawal (DOW) that can be found in the new
.
Would _you_ redesign your system if it failed?
Patrick Lawler
plaw...@west.net
On Mon, 1 Oct 2001 08:02:10 -0600 , Aschenberg, Mat
matt.aschenb...@echostar.com wrote:
Since all of you have your ESD hats on.
Are there standards for testing of components on a pwb? There is some
concern
a forum.
Patrick Lawler
plaw...@west.net
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I don't have the IEC 61000-4-2 ammendment, but CISPR24:1997
(Immunity for ITE) does have the phrases
... a minimum of 50 discharges at each point,
and
... test points shall receive at least 50 direct contact
discharges.
Maybe this is what you were thinking about.
---
Patrick Lawler
plaw
The following doesn't directly address the issue of product
robustness, but I'll pass it along anyway.
My company makes power supplies for use in medical equipment, and
some of our customers test to IEC60601-2-24 (safety EMC for
medical infusion pumps). This standard requires 15kV air
I've also seen this effect when testing component power supplies
(off-line switch-mode converters, 50-500W).
The problem became apparent when a customer added another EMI
filter ahead of our power supply, creating a system we didn't
anticipate. The power supply alone passed the test, but the
You should probably include the Philippines on the list as well.
I've heard anecdotal stories about people bringing their US appliances
to the Philippines, only to have them burn out when they plugged the
cord into the 216VAC NEMA wall socket.
Apparently, a common solution is to use a step-down
Does anyone have a copy of the EN61000-3-3 Millenium Ammendment they
would be willing to share?
On Fri, 2 Mar 2001 08:22:08 +, John Woodgate
j...@jmwa.demon.co.uk wrote:
snip
I don't suppose you have the big 'Millennium' amendment to the standard,
which STILL isn't published yet? Even though
I think it was http://parts.lvctechnology.com/
Patrick Lawler
plaw...@west.net
On Mon, 5 Feb 2001 17:16:38 -0500 , Veit, Andy andy.v...@mts.com
wrote:
I hope someone will be kind enough to help me.
A while back, someone posted a link to a vendor of used test equipment. The
vendor also had
of the standard.
This enabled you to use the less-stringent Class A limits.
With the incorporation of Ammendment 14, there is no evaluation of the
input current waveform to determine the test limit. The application
alone will determine the test limit used.
Patrick Lawler
plaw...@west.net
On Tue, 12
specified in section 18.311 (MP-5) gives a
graph of LISN performance that only goes down to 150kHz.
Am I missing something, or is this the way the regulations read?
Patrick Lawler
plaw...@west.net
---
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, and found some interesting background on that
unit of measurement:
http://www.ki.se/onkpat/radfys/sievert/Sievert.html
Patrick Lawler
plaw...@west.net
---
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Technical Committee emc-pstc discussion
also have a copy of IEC1000-4-11:1994, which has a reference to a UNIPEDE
study conducted in 1991. I'm looking into that now.
Any suggestions?
Patrick Lawler
plaw...@west.net
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On Thu, 12 Oct 2000 13:22:30 EDT, lfresea...@aol.com wrote:
does anyone have a SPICE model for an MOV?
Thanks,
Derek.
Take a look at the models offered by Intusoft
http://www.intusoft.com/Models.htm , and look for the 'Varistors' link.
Also try Littelfuse. They now own the Harris/GE varistor
I was at the CENELEC web site http://www.cenelec.org/ looking for a
reference to the current version of EN61010-1 (Safety for lab equipment),
and found confusing information.
The results of the search gave a CENELEC reference that said that
EN61010-1:1993/A2:1995 had a DOW of 1996-04-01. I take
Good grief. We haven't reached the DOW of the EN50082-1:1998, and already
they're discussing replacing it!
On Wed, 20 Sep 2000 11:10:18 -0400, wo...@sensormatic.com wrote:
A new generic immunity standard for residential, commercial and light
industrial equipment is in voting stage. DOW is
I was reviewing the voltage dip/interrupt requirements of BS
EN61000-6-2:1999, and noticed that one test condition is a 60% dip for 5
periods (0.1s at 50 Hz), while another is 60% for 50 periods (1s at 50Hz).
Both tests require Performance Criteria C.
- Wouldn't a single test at 50 periods cover
Do these standards (50204 61000-4-3)represent the same test?
I thought ENV50140 was the predecessor to IEC801-3/61000-4-3.
CENELEC describes ENC50204 as 'Radiated electromagnetic field from digital
radio telephones', with the scope being:
'The standard relates to the immunity of electrical and
Raymond:
The web site information only gives reference to the document (verifies the
document number and the subject matter), but like many standards today, it's
probably copyrighted and needs to be purchased.
To All:
Are 'Harmonized Documents' available through normal standards services (like
,
Jeff Bailey
Compliance Engineering
SST - A Division of Woodhead Canada
Phone: (519) 725 5136 ext. 363
Fax: (519) 725 1515
Email: jbai...@sstech.on.ca
Web: www.sstech.on.ca
Patrick Lawler
plaw...@west.net
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regards,
Kim Boll Jensen
Patrick Lawler
plaw...@west.net
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with the single line
There is no surge (IEC 61000-4-5) requirement in EN 50082-1:1992.
The only AC port test is EFT/Burst, at a test level of 1 kV.
On Fri, 30 Jun 2000 10:09:14 -0400, you wrote:
Here is an EMC related question. What did the EN 50082-1 standard dated
1992, (not the 1997 version), specify regarding
(to
claim compliance to the EMC Directive).
Corrections from list members appreciated.
Patrick Lawler
plaw...@west.net
-Original Message-
From: don_macart...@selinc.com
Sent: Monday, June 19, 2000 1:07 PM
To: emc-p...@majordomo.ieee.org
Subject: Philosophy for old designs with new
to the appropriate section?
Patrick Lawler
plaw...@west.net
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For policy questions, send mail to:
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Patrick Lawler
plaw...@west.net
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/Internet:www.inep.ufsc.br
Patrick Lawler
plaw...@west.net
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with the single line
ground plane as our ground plane is 36 inches by 6 feet.
Patrick Lawler
plaw...@west.net
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majord
uniformity
measurements in chambers. Is this procedure an issue for GTEMs?
Patrick Lawler
plaw...@west.net
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I think ENV 50141 was the only approved standard (of this type)
available in March 1995 (when EN 50082-2:1995 was published).
EN 50082-2 is being replaced by EN 61000-6-2:1999 (DOP 2000-1-1, DOW
2002-4-1). Although I don't have a copy, I assume it references the
newer EN61000-4-6 test standard.
Interesting that this would come up.
I just read an article in Medical Device Diagnostic Industry
magazine that discusses the fields generated by anti-theft systems.
You can see it at
http://www.devicelink.com/mddi/archive/00/01/016.html
On Tue, 21 Mar 2000 08:45:12 + (GMT),
As an excerise, I tried to find the directive that this standard was
harmonized under.
I looked on the Europa site under the EMC, Medical Device, and Active
Implantable Medical Device directives to no avail.
http://europa.eu.int/comm/enterprise/newapproach/standardization/harmstds/reflist.html
On Tue, 14 Mar 2000 17:02:52 -0500, geor...@lexmark.com wrote:
CBS has used their well honed voting models to analyze the early
election returns. With less than 1% of the votes counted, and the
Far East results not yet in, Dan Rather has declared a non-split
forum the clear winner by a wide
On Fri, 10 Mar 2000 15:34:39 -0800, tgr...@lucent.com wrote:
If this is becoming an issue, I would like to recommend that the Subject
header in the e-mail be preceded by either EMC: or SAF: followed by the
subject.This way, persons not interested in one or the other could
easily delete the
From MIL-STD-285 Notice 1:
MIL-STD-285, dated 25 June 1956, is hereby canceled. The preparing
activity for this document has determined that IEEE-STD-299 is a
suitable replacement for this standard.
Users are cautioned to evaluate this document for their particular
application before citing it
Would it be appropriate to apply the TCF approach (EMC Direcitve
definition) for your compliance statement?
Exerpted from Article 10:
2. In the case of apparatus for which the manufacturer has not
applied, or has applied only in part, the standards referred to in
Concerning putting your rack-mounted equipment an additional 0.8m
above the floor:
Clause 7.2 also says that this arrangement must be safe. If the 0.8m
support is too small in area, the test setup would violate this
requirement.
The clause also says that this setup may be done if specifically
California Instruments has products that meet that requirement.
Although the generator we bought 3-4 years ago didn't meet the 5us
spec, they later introduced an accessory box that make the generator
system compliant.
Maybe that feature has been designed-in by now.
On Mon, 24 Jan 2000 16:11:28
and RTTE
Directives.
There are no worker limits promulgated at the EU level.
Which leads me to my question. When would this new interpretation of the
essential requirement take effect - now or the DOW of the associated
standard?
--
Patrick Lawler
plaw...@west.net
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with the PC and monitor.
I contend that the typical application has the foot pedal on the
floor, and the test setup should follow the typical application.
Comments?
On a similar note, should the test setup for Conducted Radiated
Immunity follow the Emissions setup?
--
Patrick Lawler
plaw
also need the radiation levels for any other
emmitig devices, machinery, GSM antennae, power cables, etc. The more
information the better.
David - The V/m guy
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plaw...@west.net
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and dirty means of determining
whether conducted emission noise (or radiated) is common mode or
differential mode?
Thanks and have a great new year.
Bob Heller
3M Company
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Patrick Lawler
plaw...@west.net
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New Year!
Regards,
Lisa
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RELAY STSTEMS
Can someone recommend vendors of test equipment or test labs in Southern
California?
How does this test differ from the IEC 61000-4-4 fast transient test done on
end-user equipment?
Thanks,
--
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plaw...@west.net
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setup I
was satisfied with.
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with the Ametek blower? Any suggestions would be
greatly appreciated.
Ray Levasseur
EMC Compliance
Creo Products
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for pcb grounding and why you do it.
Don Umbdenstock
Sensormatic
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Germany, Technical Relations/Product Safety,
Tel: +49-7031-16-6796, Fax: -6916, e-mail: ga...@de.ibm.com
Mail: D3114/7103-91, D-70548 Stuttgart, Germany
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a 1 1/4 fuse, that meets IEC 127 (EN
60127)?
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instead of the 8590 instruments.
I've been using the 8591EM for several years now with good results. We're
going to buy another analyzer, and it will probably be an E7401A.
Unfortunately, it's taken me over 3 months just to get a demo unit. It should
be here any day now.
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Patrick Lawler
plaw
expressed are those of my invisible friend, who really
exists. Honest.
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to offend anyone.
Well, at least you told us beforehand. Considered us warned.
snip
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: 972-54-881334
Telefax: 972-3-5496369
Date: 29/6/99
Time: 0:08:41
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, but it was controlling an overhead
crane).
What are the problems or issues addressed by EN55024 that were not covered by
EN50082-1?
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.
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jim_bac...@monarch.com
not apply to this system
when
it becomes mandatory in 2001?
I realize the Second Edition of IEC60601-1-2 is just around the corner, and
that edition _does_ call out the harmonic test. However, I've been told
that
it may not take effect until 2003.
--
Patrick Lawler
plaw...@west.net
that the harmonic standard does not apply to this system when
it becomes mandatory in 2001?
I realize the Second Edition of IEC60601-1-2 is just around the corner, and
that edition _does_ call out the harmonic test. However, I've been told that
it may not take effect until 2003.
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Patrick Lawler
plaw
the limits _and_ the design of the LISN. Does this mean they
accommodated the LISN attenuation when the limits were set?
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:38 -0500, Patrick Lawler plaw...@west.net wrote:
At 04:21 PM 4/27/99 GMT, Robert Bonsen rbon...@orionscientific.com wrote:
My company is planning to purchase a screen room for radiated emissions
precompliance testing.
I'm aware that reflections can cause resonances and drastically influence
My company is planning to purchase a screen room for radiated emissions
precompliance testing.
I'm aware that reflections can cause resonances and drastically influence
readings. What kind of testing could I do to characterize the room (aside from
simple experience)?
--
Patrick Lawler
plaw
to positive and
negative low amplitude voltage fluctuations. Only conducted phenomena are
considered, including immunity tests for equipment connected to public and
industrial power supply networks.
Has the status of a Basic EMC publication.
---
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I just found out that IEC61000-4-2 (ESD immunity) has it's first amendment.
What changes does it have?
Thanks,
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with the single
in the chamber could play an important part
of the product safety as well.
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, cardiac pacemakers, defibrillators and other surgical
procedures
It doesn't seem to be harmonized yet. (http://www2.echo.lu/nasd/dckbl-14.html
and http://www2.echo.lu/nasd/dckbl-5.html)
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Patrick Lawler
plaw...@west.net
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surge circuit
described is the 10us/700us (also Annex N).
Is that the same situation with IEC950 4th Amendment?
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Patrick Lawler
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with the single line
is true for EMC immunity.
snip
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Patrick Lawler
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to this waveform being defined in IEC60-1 and
IEC469-1 (neither of which I have), in case component values are in those
documents.
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Patrick Lawler
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with the single
that the next version of IEC601-1-2 raises the contact discharge
voltage to 6kV. This doesn't seem like a big change.
If the trend is toward higher voltages in these other standards, I'd like to
find out so we can plan accordingly.
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Patrick Lawler
plaw...@west.net
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of the spec - 1/1/2005?
snip
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Patrick Lawler
plaw...@west.net
the standard would come into effect on
the DOW with a 50W lower limit?
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Patrick Lawler
plaw...@west.net
6712-01-F
--- end pasted section ---
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Patrick Lawler
plaw...@west.net
Does anyone know the status of immunity testing in Japan?
Radiated RF, ESD, EFT, Surge, Voltage dip, etc.
I've seen info that their emissions testing is voluntary.
Does this mean that their immunity requirements are years behind
emissions requirements?
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Patrick Lawler
plaw...@west.net
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