Discrete components needle flame test

[Gorodetsky, Vitaly]

Hello Experts,

While performing the Bellcore (NEBS GR-63-CORE) Needle Flame Test on
electrolytic capacitors withstanding high temperature up to 105 deg.C, a
break of hermeticity  with subsequent release of hazardous substances may
occur.  Does anyone have had an experience in successfully passing the test?
Could you write up on this subject or give me a pointer to any application
notes addressing this issue.

If my memory serves me well, a similar question was posted about a month ago
or so and briefly discussed. 

Thanks in advance for your advice.

Vitaly  Gorodetsky
Compliance Engineer Direct: (818) 678-3840
Canoga Perkins Corp.Main:   (818) 718-6300
20600 Prairie StreetFAX:(818) 678-3740
Chatsworth, CA 91311-6008   e-mail:
vgorodet...@canoga.com  

E Field measurement

[Lfresearch]

Hi folks,

I'm looking at using the 2 field meter method ( per 801 method ) until I my 
chamber is lined. Where can I still use this method, and what conditions must 
I impose?

Thanks,

Derek.

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RE: Re:EMC Experiments

[Knighten, Jim L]

Try communicating with Prof. Todd Hubing of the University Of Missouri -
Rolla

http://www.emclab.umr.edu/  

Jim Knighten

Dr. Jim Knightene-mail: jim.knigh...@sandiegoca.ncr.com
  
Senior Consulting Engineer
NCR
17095 Via del Campo
San Diego, CA 92127 http://www.ncr.com   
Tel: 858-485-2537
Fax: 858-485-3788

* Notice my previous alert about a new external e-mail address was
premature! *
* Notice the Area Code change from 619 *


-Original Message-
From:   jim_bac...@monarch.com [SMTP:jim_bac...@monarch.com]
Sent:   Wednesday, July 07, 1999 7:07 AM
To: emc-p...@majordomo.ieee.org
Subject:Fwd:Re:EMC Experiments



posting for a non list member.  Please inculde him on your replies..
Jim

Reply Separator
Subject:EMC Experiments
Author: Muriel Bittencourt de Liz 
Date:   7/5/99 10:39 AM

Dear Listmembers,

I'm beggining to develop/create some experiments of Electromagnetic
Compatibility for electrical engineering graduation students.

Anyone has any information to share with me? Any experiment that can
be
done in a relatively well-equiped lab will be welcome...

Thanks in advance for your help

Muriel

-- 

==
Muriel Bittencourt de Liz
GRUCAD - Grupo de Conceptao e Anßlise de Dispositivos
EletromagnTticos
Universidade Federal de Santa Catarina
Caixa Postal - 476 88040-900 - Florianopolis - SC - BRASIL
Fone: +55.48.331.9649 - Fax: +55.48.234.3790
e-mail: mur...@grucad.ufsc.br


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Subject: Re:EMC Experiments
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Electronic Equipment in Ambulance

[Alfred Ip]

  Hello everybody,

  Need some help on this very specialized equipment.

  I'm now working on the compliance of a mobile communications system
used in ambulance.  The system consists of:
 i) Base station:  2 PC, 1 GPS receiver, 1 radio transceiver and 1 antenna.
ii) Mobile unit: 1 display, 1 GPS receiver, 1 radio transceiver and 1
antenna.

  Here's the questions:
1) What directives apply to this system if we want to pass both CE and FCC,
knowing that it's specifically used in ambulance?
2) What should be the configuration setup for testing this system?  Should I
test the base station and mobile unit separately or at the same time?  (I'm
asking this question because testing them separately double the charge and
so it's advantageous to test them together, but knowing that they are doing
long-distance communications, such configuration doesn't make sense to me.)

 Any help will be greatly appreciated!

Alfred Ip
Trimble Navigation Ltd.
alfred...@trimble.com

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Re: ESRI

[Douglas McKean]

Hi George, 

A web search showed ... 

 ESRI: Environmental Systems Research Inst., Inc. 
 GIS:  Geographic(al) Information System(s) 

Most likely a private thing for interfacing 
particular types of information. 

Regards,  Doug McKean 


At 08:57 AM 7/7/99 -0400, geor...@lexmark.com wrote:
>
>Is anyone familiar with ESRI as a requirement or standard?
>I am fielding a question from our marketing folks as the person
>who usually handles what I call "weird" standards questions is
>on vacation.
>
>The requestor thought that ESRI has something to do with GIS.
>Neither acronym rings a bell for me.
>
>Regards,
>
>George Alspaugh
>Product Safety
>Lexmark International Inc.



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RE: GTEM cell

[Mike Hopkins]

Careful -- for FCC emissions it's allowed only if correlation with an OATS
is achieved for a given product. For the next product, correlation may have
to be re-done.

For immunity to EN's, it isn't so clear. IEC 61000-4-3 is written as if any
type of TEM cell is NON compliant, but a draft annex is now being circulated
that would allow TEM cells, but ONLY if a TEM wave can be demonstrated
throughout the frequency range being used (3-axis measurement, undesired
vectors > 6 db down). 

For emissions to EN's, TEM cells are not allowed for compliance testing.

Mike Hopkins
mhopk...@keytek.com

> -Original Message-
> From: Leslie Bai [SMTP:leslie_...@yahoo.com]
> Sent: Wednesday, July 07, 1999 11:25 AM
> To:   Qu Pingyu; 'emc'
> Subject:  Re: GTEM cell
> 
> 
> Pingyu,
> 
> I guess GTEM cell is a good choice for your case.
> Pls refer to IEC61000-4-3 (for immunity) and 
> ANSI C63.4 (for emission), GTEM cell is not only
> recognized for pre-compliance test but also
> can be used for compliance test as long as 
> some correlation can be achieved. 
> We did correlation through both modeling, simulation
> using FDTD and actual testing to verify the results.
> We are using GTEM cell for many different kinds of products
> compliance test and PCB trouble-shooting.
> It is pretty good. But you have to pay attention
> to the uniformity volume of GTEM cell, it's
> a bit tricky, especially the cabling of EUT may affect
> the result, thus, during the correction, a harness
> is supposed to be used to simulate the EUT cabling.
> 
> Hope it helps.
> Leslie
> 
> --- Qu Pingyu  wrote:
> > 
> > Hello, Everyone:
> > 
> > I have some questions regarding the GTEM cell. Here
> > in our Institute we are
> > considering setting up some EMC measurement
> > capability for precompliance
> > testing. The EUTs we are dealing with are not very
> > large, probably not
> > larger than a desktop PC. Do you think that GTEM
> > cell is a good choice ? Do
> > many of you use GTEM as a precompliance testing
> > facility ? Your comments are
> > highly appreciated.
> > 
> > Regards
> > 
> > Qu Pingyu
> > 
> > 
> > -
> > This message is coming from the emc-pstc discussion
> > list.
> > To cancel your subscription, send mail to
> > majord...@ieee.org
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> > roger.volgst...@compaq.com (the list
> > administrators).
> > 
> > 
> > 
> 
> _
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> Get your free @yahoo.com address at http://mail.yahoo.com
> 
> 
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Re: connectors that meet hipot requirements

[Douglas McKean]

Aren't there 0.156" connectors by Amp or Molex? 

At 01:21 PM 7/7/99 -0400, Beard, Susan wrote:
>
>Anyone know of any connectors with 0.1" spacings that survive a 2000 volt
>rms hipot requirement?
>
>Susan Beard



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CSA C22.2 No. 950

[georgea]

Your question regards "marking requirements".  For safety standards only,
you need only the CSA or C-UL mark with accompanying file number etc.

For EMC markings (not a IEC 60950 issue) you may use something like the
following:

CANADA ICES-003, CLASS B (English)
CANADA NMB-003, CLASSE B  (French)

Any manuals will need to be available in both English and French.

George Alspaugh
Lexmark International Inc.

-- Forwarded by George Alspaugh/Lex/Lexmark on 07/07/99
03:15 PM ---

donald%hq.rossvideo@interlock.lexmark.com on 07/07/99 10:07:49 AM

Please respond to donald%hq.rossvideo@interlock.lexmark.com

To:   emc-pstc%ieee@interlock.lexmark.com
cc:
Subject:  CSA C22.2 No. 950




Could someone with a canadian version of the ITE 950 standard
indicate whether or not they are aware of any additions to the
marking requirements from that of the IEC 950 version. I have a
copy of the IEC standard but would like to avoid purchasing the
Canadian version, at least at this time.

The markings I had in mind, would be those that maybe required to
address both Canadian official languages.

Any help would be appreciated.

Donald McElheran
Ross Video Ltd.
Product Development Co-ordinator





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connectors that meet hipot requirements

[Beard, Susan]

Anyone know of any connectors with 0.1" spacings that survive a 2000 volt
rms hipot requirement?

Susan Beard

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EMC - Malaysia & Nepal

[John Juhasz]

Do Malaysia & Nepal require EMC approval (I believe Malaysia does?)? If so,
are they based on, or do they accept CE approval (for ITE equipement)? 

Thanks.

John A. Juhasz
Product Qualification &
Compliance Engr.

Fiber Options, Inc.
80 Orville Dr. Suite 102
Bohemia, NY 11716 USA

Tel: 516-567-8320 ext. 324
Fax: 516-567-8322 


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RE: ESRI

[Richard Cass]

George,
ESRI is a privately held company that makes GIS (geographic information
systems, i.e. maps, satellite photos, etc) software.  go to
http://www.esri.com/index.html
for more details.  
They are the big dogs in the yard in this business.  I believe their
software is compatible with many graphical standards for output devices
(printers, plotter, etc).  Also there is a Open GIS Consortium  that is
actively developing open standards for that industry.  ESRI is a part of
that.

Like our marketing guys, I think they are just looking for another market to
sell output devices to.  The GIS market is very demanding of quality
reproduction in their output devices.
Hope this helps.  Contact me directly if I can be of more help.

Regards,
Richard Cass
Iris Graphics, Inc.
A Scitex Company
Bedford, MA 01730
781 276-5424
richard_c...@irisinc.scitex.com


-Original Message-
From: geor...@lexmark.com [mailto:geor...@lexmark.com]
Sent: Wednesday, July 07, 1999 8:58 AM
To: emc-p...@majordomo.ieee.org
Subject: ESRI



Is anyone familiar with ESRI as a requirement or standard?
I am fielding a question from our marketing folks as the person
who usually handles what I call "weird" standards questions is
on vacation.

The requestor thought that ESRI has something to do with GIS.
Neither acronym rings a bell for me.

Regards,

George Alspaugh
Product Safety
Lexmark International Inc.



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CSA C22.2 No. 950

[Peter E. Perkins]

Donald, et al,

If you intend to sell your product in North America you can find
all of the requirements in the Bi-national CSS C22.2 no 950/ UL 1950
standard.  There are a number of National Deviations that need to be
considered along with the language issue (of which there are about a dozen
pages on markings and instructions).  

If you still don't want to buy the standard, give me a call -
that's what I do...  

:>) br, Pete Perkins

- - - - -

Peter E Perkins
Principal Product Safety Consultant
Tigard, ORe  97281-3427

+1/503/452-1201 phone/fax

p.perk...@ieee.org  email

visit our website:

http://ourworld.compuserve.com/homepages/peperkins

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RE: Re:EMC Experiments

[Grasso, Charles (Chaz)]

You might contact the Education Committee at the
IEEE. They are committed to the Education on EMC and
have put on may successful experiment demos at EMC
Conferences. (As the Workshop/Tutorial & Experiments
Chair for Denver 1998 I can personally attest to
thet quality of the expeiments and demo). The
IEEE Website has all the info you need.

Thank you
Charles Grasso
Advisory Engineer
StorageTek
2270Sth 88th Street
Louisville CO 80027 M/S 4247.
Tel:303-673-2908
Fax:303-661-7115
email:gra...@louisville.stortek.com
Web Site:  http://www.ewh.ieee.org/r5/denver/rockymountainemc/




-Original Message-
From: jim_bac...@monarch.com [mailto:jim_bac...@monarch.com]
Sent: Wednesday, July 07, 1999 8:07 AM
To: emc-p...@majordomo.ieee.org
Subject: Fwd:Re:EMC Experiments




posting for a non list member.  Please inculde him on your replies..  Jim

Reply Separator
Subject:EMC Experiments
Author: Muriel Bittencourt de Liz 
List-Post: emc-pstc@listserv.ieee.org
Date:   7/5/99 10:39 AM

Dear Listmembers,

I'm beggining to develop/create some experiments of Electromagnetic
Compatibility for electrical engineering graduation students.

Anyone has any information to share with me? Any experiment that can be
done in a relatively well-equiped lab will be welcome...

Thanks in advance for your help

Muriel

-- 
==
Muriel Bittencourt de Liz
GRUCAD - Grupo de Conceptao e Anßlise de Dispositivos EletromagnTticos
Universidade Federal de Santa Catarina
Caixa Postal - 476 88040-900 - Florianopolis - SC - BRASIL
Fone: +55.48.331.9649 - Fax: +55.48.234.3790
e-mail: mur...@grucad.ufsc.br


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Subject: Re:EMC Experiments
To: Muriel Bittencourt de Liz ,
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Re: GTEM cell

[Leslie Bai]

Pingyu,

I guess GTEM cell is a good choice for your case.
Pls refer to IEC61000-4-3 (for immunity) and 
ANSI C63.4 (for emission), GTEM cell is not only
recognized for pre-compliance test but also
can be used for compliance test as long as 
some correlation can be achieved. 
We did correlation through both modeling, simulation
using FDTD and actual testing to verify the results.
We are using GTEM cell for many different kinds of products
compliance test and PCB trouble-shooting.
It is pretty good. But you have to pay attention
to the uniformity volume of GTEM cell, it's
a bit tricky, especially the cabling of EUT may affect
the result, thus, during the correction, a harness
is supposed to be used to simulate the EUT cabling.

Hope it helps.
Leslie

--- Qu Pingyu  wrote:
> 
> Hello, Everyone:
> 
> I have some questions regarding the GTEM cell. Here
> in our Institute we are
> considering setting up some EMC measurement
> capability for precompliance
> testing. The EUTs we are dealing with are not very
> large, probably not
> larger than a desktop PC. Do you think that GTEM
> cell is a good choice ? Do
> many of you use GTEM as a precompliance testing
> facility ? Your comments are
> highly appreciated.
> 
> Regards
> 
> Qu Pingyu
> 
> 
> -
> 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
> quotes).  For help, send mail to ed.pr...@cubic.com,
> jim_bac...@monarch.com, ri...@sdd.hp.com, or
> roger.volgst...@compaq.com (the list
> administrators).
> 
> 
> 

_
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Re: US position paper on Harmonics

[PRYOR MCGINNIS]

The attached document should help.

-Original Message-
From: Chris Olliffe 
To: emc_p...@ieee.org ; t...@world.std.com

List-Post: emc-pstc@listserv.ieee.org
Date: Wednesday, July 07, 1999 10:54 AM
Subject: US position paper on Harmonics


> Recently I recall someone posting a link to a US position paper about
> the harmonics standard EN61000-3-2.
>
> I have had a look through the back listings in the conference hall but
> I cannot find it.
>
> If someone could point me to it I would be grateful.
>
> Thanks, in advance.
>
> Chris Olliffe
>


USCCEMC 99-01.PDF
Description: Adobe PDF document

CSA C22.2 No. 950

[Donald McElheran]

Could someone with a canadian version of the ITE 950 standard 
indicate whether or not they are aware of any additions to the 
marking requirements from that of the IEC 950 version. I have a 
copy of the IEC standard but would like to avoid purchasing the 
Canadian version, at least at this time. 

The markings I had in mind, would be those that maybe required to 
address both Canadian official languages.

Any help would be appreciated.  

Donald McElheran
Ross Video Ltd.
Product Development Co-ordinator

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US position paper on Harmonics

[Chris Olliffe]

 Recently I recall someone posting a link to a US position paper about 
 the harmonics standard EN61000-3-2.
 
 I have had a look through the back listings in the conference hall but 
 I cannot find it.
 
 If someone could point me to it I would be grateful.
 
 Thanks, in advance.
 
 Chris Olliffe

Fwd:Re:EMC Experiments

[Jim_Bacher]

posting for a non list member.  Please inculde him on your replies..  Jim

Reply Separator
Subject:EMC Experiments
Author: Muriel Bittencourt de Liz 
List-Post: emc-pstc@listserv.ieee.org
Date:   7/5/99 10:39 AM

Dear Listmembers,

I'm beggining to develop/create some experiments of Electromagnetic
Compatibility for electrical engineering graduation students.

Anyone has any information to share with me? Any experiment that can be
done in a relatively well-equiped lab will be welcome...

Thanks in advance for your help

Muriel

-- 
==
Muriel Bittencourt de Liz
GRUCAD - Grupo de Conceptao e Anßlise de Dispositivos EletromagnTticos
Universidade Federal de Santa Catarina
Caixa Postal - 476 88040-900 - Florianopolis - SC - BRASIL
Fone: +55.48.331.9649 - Fax: +55.48.234.3790
e-mail: mur...@grucad.ufsc.br


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RE: UL1950/EN 60 950 Spacings

[JENKINS, JEFF]

Peter,

We have the same situation with my company's products.  We use the nominal
line to neutral voltage even when no neutral is present.  Our experience has
been that the certifying agencies accept this.

Best Regards,

Jeff Jenkins
Senior Regulatory Compliance Engineer
Advanced Energy Industries, Inc.
Fort Collins, CO USA

Opinions are my own, etc.

-Original Message-
From: pe...@itl.co.il [mailto:pe...@itl.co.il]
Sent: Tuesday, July 06, 1999 1:57 PM
To: emc-p...@ieee.org
Cc: al...@itl.co.il; ico...@itl.co.il; zoh...@itl.co.il;
plei...@itl.co.il; sgn...@itl.co.il
Subject: UL1950/EN 60 950 Spacings



Dear All,

The subject standards specify that Tables 3, 4, 5 (clearances) are 
based on nominal line to neutral supply voltages. For equipment 
powered by 3 phase (L1,L2,L3 and earth) WITHOUT a neutral, how 
should the nominal supply voltage be treated?

Regards, Peter
PETER S. MERGUERIAN
MANAGING DIRECTOR
PRODUCT TESTING DIVISION
I.T.L. (PRODUCT TESTING) LTD.
HACHAROSHET 26, P.O.B. 211
OR YEHUDA 60251, ISRAEL

TEL: 972-3-5339022
FAX: 972-3-5339019
E-MAIL: pe...@itl.co.il
Visit our Website: http://www.itl.co.il

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Re: ESRI

[Art Michael]

Hello George,

I usually plug unknown terms (such as ESRI) into the Altavista Search
Tool as a "first-shot" at identifying them.

This one yielded lotsa hits for  which appears to be a GIS
Software and Training outfit.  That could be the one you are looking for ? 

Regards,

Art Michael, Editor - Int'l Product Safety News

 * * * * * * * * * * * * * * * * * * * * * * 
*   International Product Safety Bookshop   *
*  Check out our current offerings! *
*  *   
*   *
* Another service of the Safety Link*
*   *
 * * * * * * * * * * * * * * * * * * * * * * 

-
On Wed, 7 Jul 1999 geor...@lexmark.com wrote:

> 
> Is anyone familiar with ESRI as a requirement or standard?
> I am fielding a question from our marketing folks as the person
> who usually handles what I call "weird" standards questions is
> on vacation.
> 
> The requestor thought that ESRI has something to do with GIS.
> Neither acronym rings a bell for me.
> 
> Regards,
> 
> George Alspaugh
> Product Safety
> Lexmark International Inc.
> 
> 
> 
> -
> This message is coming from the emc-pstc discussion list.
> To cancel your subscription, send mail to majord...@ieee.org
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> roger.volgst...@compaq.com (the list administrators).
> 
> 
> 


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ESRI

[georgea]

Is anyone familiar with ESRI as a requirement or standard?
I am fielding a question from our marketing folks as the person
who usually handles what I call "weird" standards questions is
on vacation.

The requestor thought that ESRI has something to do with GIS.
Neither acronym rings a bell for me.

Regards,

George Alspaugh
Product Safety
Lexmark International Inc.



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Physical Security in Euope for ATMs

[Jody Leber]

Does anyone know if there are any physical security requirements or standards 
for ATMs in Europe?  UL 291 is the US version.

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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Re: UL1950/EN 60 950 Spacings

[Horst Dierich]

Dear Peter,
 
IEC 950 Second edition A4, 1996, is available to me. You can read in
2.9.1 on page 105A in the second paragraph: "For all POWER SYSTEMS, the
mains supply voltage in tables 3, 4 and 5 is the phase-to-neutral
voltage."
To discuss your case where you do not supply the neutral to your
equipment, here are some explanations:
Since tables 3, 4 and 5 are concerned with Clearances, the mayor
contributor to the spacing requirements are the transients.
Investigations in old days have shown that the transients are roughly
the same on all 3 phases L1, L2 and L3 of a three-phase distribution
system. 
Transients are categorized into Overvoltage Categories in IEC 664-1
table 1. There are other hints given to IEC 364-4-443 and IEC 38. If you
follow all through this jungle you will end up with a simple equation: 
If you operate your equipment in Overvoltage Category II from a single
phase 230 V r.m.s. or from three phases 400 V r.m.s. supply system with
or without neutral connected to the equipment, you have to consider
transients of 2500 V. This is the determining value for your clearance.
Back to IEC 950 table 3 your insulation working voltage is up to 300 V
r.m.s. in the above mentioned example, and you have found the needed row
for the required clearances.

Kind regards/mit freundlichen Gruessen

Horst Dierich
--

Peter Merguerian wrote:
> 
> Dear All,
> 
> The subject standards specify that Tables 3, 4, 5 (clearances) are
> based on nominal line to neutral supply voltages. For equipment
> powered by 3 phase (L1,L2,L3 and earth) WITHOUT a neutral, how
> should the nominal supply voltage be treated?
> 
> Regards, Peter
> PETER S. MERGUERIAN
> MANAGING DIRECTOR
> PRODUCT TESTING DIVISION
> I.T.L. (PRODUCT TESTING) LTD.
> HACHAROSHET 26, P.O.B. 211
> OR YEHUDA 60251, ISRAEL
> 
> TEL: 972-3-5339022
> FAX: 972-3-5339019
> E-MAIL: pe...@itl.co.il
> Visit our Website: http://www.itl.co.il

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Re: Modem Requirements in China

[Dorababu R.]

Try at these web sites for info :

http://www.typeapproval.com  ( For Asia-Pacific region ).
http://www.cclab.com

thanks
Dorababu



Tony Reynolds wrote:
> 
>  Hello,
> 
>  Can someone please clarify the requirements for a simple analogue
>  modem in China.  (i.e. what to design it to, regulatory testing, etc.)
> 
>  Any help will be very much appreciated.
> 
>  Tony Reynolds
>  Principal Compliance Engineer
>  Pitney Bowes Ltd.
>  Tel (0) 1279 449479
>  Fax (0) 1279 449118
>  E-Mail: reyno...@pb.com
> 
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Modem Requirements in China

[Tony Reynolds]

 Hello,
 
 Can someone please clarify the requirements for a simple analogue 
 modem in China.  (i.e. what to design it to, regulatory testing, etc.)
 
 Any help will be very much appreciated.
 
 Tony Reynolds
 Principal Compliance Engineer
 Pitney Bowes Ltd.
 Tel (0) 1279 449479
 Fax (0) 1279 449118
 E-Mail: reyno...@pb.com


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GTEM cell

[Qu Pingyu]

Hello, Everyone:

I have some questions regarding the GTEM cell. Here in our Institute we are
considering setting up some EMC measurement capability for precompliance
testing. The EUTs we are dealing with are not very large, probably not
larger than a desktop PC. Do you think that GTEM cell is a good choice ? Do
many of you use GTEM as a precompliance testing facility ? Your comments are
highly appreciated.

Regards

Qu Pingyu


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