Hello group,
Recently I was reviewing a new product that my company plans to manufacture.
It has an industrial CPU board and a modem daughter board. During the
review my safety consultant brought up the concept that not all public
access telephone systems are the same and we would need a modem c
Carmen: The Bellcore has not much to do with the EU. The Bellcore
requirements are not legal requirements in the US, they are voluntary. I
would not count on much luck marketing Telecommunications Equipment in the
US without complying with Bellcore requirements however, as all the major
RBOC's
Pretty much sums up the situation. I would add that if the RBOC's don't have
a source and so they need your stuff, they will take it after much
grumbling, but they will take it. The risk is more are you so unique that
they can't get it elsewhere. It's actually a question worth asking because
the t
Is this an oxymoron?
I sometimes wish we had a GTEM, but our anechoic screen room has just
started to be used for pre-compliance testing and troubleshooting. The
workstation consists of a Braden CFC (3000 cu.ft Compact Ferrite Chamber),
AR FM2000 isotropic probe, AR 1Kw log periodic, AR 25W1000M7
I'd say MSNC, NBC, CNN, CBS & ABC all owe us an explanation of why their
so-called 'reporters' and 'talking heads' never reported that this
apparently fraudulent research scientist has been under investigation since
1995. In every story that they've done on Cancer and EMF 1995-1999, they
should ha
The NEBS requirements are not mandatory government standards. However,
when dealing with RBOCs (Regional Bell Operating Companies) like Bell
Atlantic, Pacific Bell, Ameritech, etc . . . it is recommended that you meet
the NEBS
requirements. If you don't, and your equipment is intended for co-locat
I have a copy, and I believe I purchased it at the Document Center also.
Thier number now is: 650-591-7600
It was less than $100. I think around $50...not too expensive.
- Mel
-Original Message-
From: Robert Walch [mailto:rwa...@vectron.com]
Sent: Friday, July 30, 1999 9:07 AM
To:
Arun,
Contact:
RAC (Reliability Analysis Center)
201 Mill St
Rome NY 13440
They are a research center that created 217
They can be reached at:
email: r...@iitri.org
web page: http://rac.iitri.org
phone: 800 526 4802 for publications
My real job (as opposed to my part time EMC/safety job) is re
Nick
Having been in the business of helping companies deal with European and
international compliance issues for over 10 years I would have to disagree
somewhat with your comments. Some of the following comments are going to
come very close to looking like advertising for which I apologise in
a
Jack,
IMHO, how to convince and establish constructive relations with managers
and other team members is a big challenge for an experienced EMC engineer.
If unfortunately failed, we should improve our communication skills even
though we were correct in terms of insisting our professional integ
Typically the default is the light industrial immunity standard EN50082-1
which calls out IEC 1000-4-2 for ESD. Levels can be up to 15kV. Air
discharge is used on insulating surfaces such the keyboard, and contact of
metal surfaces. In my expereince most testing is done with the air
discharge t
The standard IEC-801-2/EN set describes ESD testing in general for ITE type
equipment but I think they are woefully lacking when you are talking about
operator interfaces and things people touch. The rear of a computer cabinet
is a lot less susceptible IMO that something that people have to touch
Hello Ladies and Gentlemen,
I'm looking for information about NEBS compliance. I know there are 3
criteria levels for NEBS compliance devised by Bellcore, to ensure that
telecommunication equipment is suitable for the customers needs and to
reduce the time and expenses for the manufacturers. Are
How come I have not seen the original Rich's message posted on July 20?
> -Original Message-
> From: Schanker, Jack [SMTP:jschan...@adaptivebroadband.com]
> Sent: Friday, July 30, 1999 6:37 AM
> To: ri...@sdd.hp.com
> Cc: emc-p...@ieee.org
> Subject: That doesn't make any sens
Hello Ladies and Gentlemen,
I'm looking for information about NEBS compliance. I know there are 3
criteria levels for NEBS compliance devised by Bellcore, to ensure that
telecommunication equipment is suitable for the customers needs and to
reduce the time and expenses for the manufacturers. Ar
TEM cells large enough for a very small computer are, I believe, available.
I don't have the sales literature in front of me and I haven't seen it for
awhile, but in my opinion you would be better served if you invest in
pre-compliance equipment, a small ground screen etc, even with a less than
id
Information Handling Services has it. (There may be a subscription fee required
to use their services.) It can be downloaded in PDF, GIF or TIFF. A search
result at their site will bring up the most recent change. However, all
previous versions of the document are available by clicking on Docum
Hi,
I've got to hedge against testing objects with wiring in a GTEM. They are
great for Cell Phones and the like. Attach wiring and results can differ
greatly from a shield room test.
Derek Walton
-
This message is coming from the emc-pstc discussion list.
To cancel your subscription,
Good Day Everyone,
I'm having a heck of a time getting compliance information from Rockwell
regarding one of their Socket Modems
(SMV144AC series). We incorporratte this modem onto our motherboard. Simply,
I need to know if the Rockwell modem that we use in our product has been
recognized to eith
I have a copy I received snail mail from "Document Center" (415) 591 - 7600.
Not sure if they still exist. My copy is about 5 years old. I would do a
web search for the DoD. As one of the other replies stated Bellcore would
be better for commercial components. MIL-HDBK-217 is unrealistically br
Does anyone know of a standard that talks about the testing requirements on
a display/keyboard interface. I am interested in knowing what kind of ESD
tests to perform on it. Are contact, air and indirect discharge necessary?
Does anyone have experience with Operator Interfaces? Are there partic
Rich:
I want to thank you, and compliment you, for so accurately describing
managment reactions to regulatory "problems" in your July 20 posting to the
emc-pstc.
It completely mirrors my own past (and continuing) experiences.
I have also gotten the reaction "well, that doesn't make any sense" i
It could be argued that Nostrum are a competitor of Conformance, so you may
want to treat my comments with caution, but I would disagree most strongly
with what was said by them on this.
The only directive which REQUIRES appointment of a representative within
the EU is the Medical Devices Directi
I do not believe that the GTEM is a suitable option for testing a PC due to
the size limitations of the GTEM. The GTEM has, for lack of a better term, a
"sweet spot" that the EUT has to occupy for optimum results. Although you
might be able to place your EUT in the GTEM, it would not necessarily b
It was the latter, I was just trying to be polite and non judgmental. :-)
-Original Message-
From: Gorodetsky, Vitaly [mailto:vgorodet...@canoga.com]
Sent: Wednesday, July 28, 1999 5:08 PM
To: 'rbus...@es.com'; emc-p.
In a message dated 7/30/99 5:55:14 AM Eastern Daylight Time,
a...@safety.demon.co.uk writes:
<< emc-p...@majordomo.ieee.org >>
Many of the members and professional services participating in this group
resist this type of advertisement.
--- Begin Message ---
Hi Darrell & members.
Authorised R
Arun,
I don't have the price for the MIL std, but services or software to predict MTBF
using MIL-HDBK-217 or Bellcore data are available from:
Amoruso Island: http://www.frontpagepro.com/amoroso/rel_eng.htm
Relex : http://www.innovsw.com/index.htm or
http://www.relexsoftware.c
Hi Darrell & members.
Authorised Representatives Ltd. specialize in providing support
and 'Authorised Representative' status for importers into the EU.
Our background experience is in European and International
certification and we can provide a total package of advice,
management services and
If any EMC-PSTC readers in the west of England need help designing products to
meet CE and similar requirements, read on!
On Tue 14 September a FREE Seminar, Workshop and Exhibition is being held in
Exeter, Devon. This is organised by the CE Forum West (formerly an EMC Club) and
will offer expe
Hello, everyone:
I posted an question several weeks ago asking about GTEM. Thanks those who
share with me your experience. I may not address my problem very clearly
thus I would like to come back to you one more time.
We are a R & D orgnization in Singapore mainly dealing with semiconductor
indu
Dear everyone
I heard that Chile mandatory power plug according to CEI 2350 by September.
Does anyone know information about it?
James Yoo
jwon...@hotmail.com
__
Get Your Private, Free Email at http://www.hotmail.com
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This message
Brian,
The HCl (hydrochloric acid, muriatic acid) combines with the Zn coating
forming zinc chloride in place of the oxides also forming water and/or hydrogen
gas the reaction goes quickly to completion, the ZnCl is highly soluable and
washes or is blown away, leaving clean unoxidized zinc.
Hi all,
Could someone guide me on where to down load from the net or purchase the
latest version of MIL-HDBK-217 and approximately how much it would cost. It
is a Reliability/MTBF related issue.
Thanks in advance.
Regards
Arun Kaore
EMC Engineer
ADI Limited
Systems Group
Test & Evaluation Ce
Bob:
My ha'penny's worth:
What about increasing the voltage rating of the subject electrolytics? This
may be expensive, requiring costly capacitors. Something el cheapo: what
about a fuse on the input side of the cap?
Are the electrolytics by-passed with capacitors about 0.1 uF or less, with
short
Bob,
Could you let us know the power rating of the power supply and also the
topology of the power supply? I have not heard about such a failure as
shorting the regulator should not affect the primary DC cap? More
information would be helpful.
Thanks
Homi Ahamdi
Cortech Systems
-
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