[mailto:j...@randolph-telecom.com]
Sent: Wednesday, October 20, 2010 3:07 PM
To: Grasso, Charles; 'emc-p...@ieee.org'
Subject: Re: Help requested with Mexican modem standards
On 10/20/2010, Charles Grasso wrote:
We are rsing the NORMA Oficial Mexicana NOM-151-SCT1-1999 for use
On 10/20/2010, Charles Grasso wrote:
We are rsing the “NORMA Oficial Mexicana NOM-151-SCT1-1999” for use with
the Mexican phone system. I am looking for any other sources either with
COFETEL or other organizations/facilities that have any input/understanding of
the
In message
pine.bsf.4.40.0602181139550.14193-100...@shelley.shelltown.net, dated
Sat, 18 Feb 2006, Arthur Michael amich...@safetylink.com writes
It appears, that TC96 in their attempt to make 61558 a catch-all
standard, by including equipment rated 1000 V a.c. or less, has created
a situation
Hello John, et al,
As the originator of this message string, I have nearly reached the end of
my string :-)
My copy of the IEC Standard, IEC 61558-1, 2nd Ed., (2005-09) is titled,
Safety of power transformers, power supplies, reactors and similar products-
My copy of the IEC Standard, IEC
In message HmK0$0h+vk9df...@jmwa.demon.co.uk, dated Fri, 17 Feb 2006,
John Woodgate j...@jmwa.demon.co.uk writes
In message p06230922c01bf4685e3d@[192.168.1.83], dated Fri, 17 Feb
2006, Nick Williams nick.willi...@conformance.co.uk writes
Noted your later posting, and I will admit to sticking my
Hello Peter,
You are correct re Furukawa's TEX-E wires (at present). It also happens
that there is a fleet of listees at UL - but they are for 60950, Annex U
and not 61558-1 Annex K.
Rubudue does appear to have Annex K approval, but I've not yet seen
their license/listing/certification.
And,
In message p06230922c01bf4685e3d@[192.168.1.83], dated Fri, 17 Feb
2006, Nick Williams nick.willi...@conformance.co.uk writes
Noted your later posting, and I will admit to sticking my nose into
something I am not properly briefed on, but your comment:
At 9:23 pm + 17/2/06, John Woodgate
John,
Noted your later posting, and I will admit to sticking my nose into
something I am not properly briefed on, but your comment:
At 9:23 pm + 17/2/06, John Woodgate wrote:
Episode 3 is that the section of Part 2 applicable to switch-mode
power supply transformers is section 2-16, which
In message jhhhoegs7j9df...@jmwa.demon.co.uk, dated Fri, 17 Feb 2006,
John Woodgate j...@jmwa.demon.co.uk writes
In message
be3336be85968d49be01e66d6e365b1e4ec...@sjc1amfpew01.am.sanm.corp,
dated Fri, 17 Feb 2006, Peter Tarver peter.tar...@sanmina-sci.com
writes
I did the original UL
In message
be3336be85968d49be01e66d6e365b1e4ec...@sjc1amfpew01.am.sanm.corp,
dated Fri, 17 Feb 2006, Peter Tarver peter.tar...@sanmina-sci.com
writes
I did the original UL evaluation on the Furukawa TEX and TEX-E wires. I
just checked their web site
Howdy, Art.
I did the original UL evaluation on the Furukawa TEX and TEX-E wires. I
just checked their web site
http://www.furukawa.co.jp/makisen/eng/safety/standard.htm#TEXE
and see that they make no claims regarding 61558-1. The wire was
originally intended only for 950-type power supplies
Right after posting, forgot a major low cost supplier who
may know the answer...
Fay Electronics 800 245 9473
Chicago, IL
- Robert -
On Tue, 14 Feb 2006 08:46:28 -0800
Robert A. Macy m...@california.com wrote:
at the risk of duplicating...
Belden Wire Cable
at the risk of duplicating...
Belden Wire Cable 800-235-3361
2200 U. S. 27 South
Richmond, IN
http://www.belden.com
or try Dan [very knowledgeable] at
MWS Wire Industries
31200 Cedar Valley Drive
Westlake Village, CA., 91362
http://www.mwswire.com
Phone: 818-991-8553 |
Hello Arthur,
As Neil noted, it can be difficult to use triple insulated wire in an EN
60335-1 design. Depending on the design and use of your product, you may
be able to design and test your power supply to EN 60950-1. If you get
NRTL approval of the power supply to EN 60950-1, you may be able
Art
I've not seen any triple insulated wire conforming to EN61558, only EN60950
and EN60065. There's another manufacturer - Totoku - http://www.totoku.com/ .
Not much help I'm afraid.
Cheers
Chris
_
Christopher Colgan
Compliance Engineer
Art,
I cannot help with your immediate question regarding a source, but I used
this type of wire several years ago and was unable to make a transformer
that complied with EN 60335-1 despite the wire being appropriately rated. I
would strongly recommend an alternative solution.
Best regards
Neil
http://www.ieee-pses.org/symposium http://www.emc2004.org/
--
On 7/8/2004, Howard Ji wrote:
I need to inject/induce a 60Hz common mode signal with a p-p voltage of around
100V onto a RJ11 cable. I have signal generator, amplifier and some
@listserv.ieee.org
Date: Thu, 8 Jul 2004 19:15:56 -0600
To: Howard Ji \(howardji\) howar...@cisco.com, emc-p...@ieee.org
Subject: RE: help needed to inject/induce 100 V, 60 Hz common-mode noise
http://www.ieee-pses.org/symposium http://www.emc2004.org
http://www.ieee-pses.org/symposium http://www.emc2004.org/
--
You don't mention anything about the data requirements, so this may be silly,
but why not use a standard Y capacitor like you would use for power supply
filtering with the base of the Y
Hi Michael,
Unfortunately, I've already tried to overwrite the file, but now the
receiver can't load any further data, cause its internal memory is full
with the corrupted data, and every new load is supposed to add new points
to the exixting ones, and not to replace them.
Abut the RF
David,
Just did a search in Rich's Northern California Directory
for both air and modem which showed many companies, but
no results.
Also searched through Reference USA for *any* firm with
modem in their name, again many companies, but no
results.
If a company has been around for a while and
I agree with Mr. Woodgate. Leading off with the Forrestal, without
adequately explaining the failure mechanism, gives an unrealistic and
misleading introduction to the subject. There was a degraded shield
termination that allowed rf to couple to EED leads. For an entity whose
emission challenge
When the missile launched it struck another aircraft, the pilot was John
Mccain, now Senator John McCain.
Bill
From: Ken Javor [mailto:ken.ja...@emccompliance.com]
Sent: Thursday, March 27, 2003 3:37 PM
To: boconn...@t-yuden.com; emc-p...@majordomo.ieee.org
Subject: Re: Help wanted
looked at this instance so it could be
faulty memory on my part.
Gary
From: Ken Javor [mailto:ken.ja...@emccompliance.com]
Sent: Thursday, March 27, 2003 3:37 PM
To: boconn...@t-yuden.com; emc-p...@majordomo.ieee.org
Subject: Re: Help wanted with succinct subject description for non
of
enviromental stress testing (shock. vibration, thermal). EMC was not, IMO,
considered part of the root cause.
R/S,
Brian
-Original Message-
From: King, Richard
Sent: Thursday, March 27, 2003 7:18 AM
To: emc-p...@majordomo.ieee.org
Subject: RE: Help wanted with succinct subject
,
considered part of the root cause.
R/S,
Brian
-Original Message-
From: King, Richard
Sent: Thursday, March 27, 2003 7:18 AM
To: emc-p...@majordomo.ieee.org
Subject: RE: Help wanted with succinct subject description for
non-special ists
I should reiterate from my original message
I should reiterate from my original message that the text I posted is the
introduction to an article, not a complete article.
The example was included to engage the reader from the start; demonstrate
that electromagnetic compatibility between systems is a real-world issue;
and show that a lack
-Original Message-
From: King, Richard [mailto:richard.k...@uk.thalesgroup.com]
Sent: Monday, March 24, 2003 3:07 AM
To: 'emc-p...@majordomo.ieee.org'
Subject: Help wanted with succinct subject description for
non-specialists
Dear all,
I am working on an article about EMC for an
Dear All,
Many thanks for your collective help with this question. I attach my final
text below in case others on the list have a use for it.
Electromagnetic Compatibility (EMC)
In 1967 off the coast of Vietnam, a jet landing on the aircraft carrier
U.S.S. Forrestal was briefly illuminated by
To me, all this regulation can be synopsized:
Electronics shall not put out stuff - conducted or radiated
Electronics shall not be upset when stuff comes in -
susceptibility to conducted or radiated.
Difference in attitude between US and elsewhere:
It is my understanding that in the US
Richard asks..
My questions to the list are: What are your experiences of
producing similar material? How well was it received and what
is your advice for people producing similar text?
Always a difficult (but absolutely essential) task I find. You may
have to stand in front of the audience
For non-technical people ... in other words KISS.
EMC is two things:
I respectfully disagree.
Here's what I'd say.
Take it as you wish.
EMC or Electromagnetic Compatibility is the products ability to
pass a variety of electromagnetic product testing requirements
demanded by different countries
-Original Message-
From: C N [mailto:abx...@hotmail.com]
Sent: Monday, March 24, 2003 10:48 PM
To: emc-p...@majordomo.ieee.org
Subject: Re: Help wanted with succinct subject description for
non-specialists
For non-technical people ... in other words KISS.
EMC is two things:
I
I read in !emc-pstc that King, Richard richard.k...@uk.thalesgroup.com
wrote (in C02943801230D611919D00508BDF0C246EB5E8@RTWEXCH) about 'Help
wanted with succinct subject description for non-specialists' on Mon, 24
Mar 2003:
EMC is two things:
- The resistance of a piece of equipment to external
Hi Kyle:
I presently use a system of lot marking codes with a simple one-page
document that is shipped with each batch of parts from the vendor. The
document has the name of the vendor's QA person in signature and the
relevant lot numbers for each shipment from the factory and
@listserv.ieee.org
Date: Monday, September 20, 1999 10:27 AM
Subject: RE: help (plastics marking)
I'm probably mistaken, but it would seem that just having the plastic
material marked on the parts would not be enough proof because of the
chance
of mis-marking. Have I missed something here
: Saturday, September 18, 1999 9:43 AM
To: Price, Ed; emc-p...@ieee.org
Subject:Re: help
I have experienced good results by requesting the Part/Component
molder to
mold the plastic identification in the part/component.
Pryor McGinnis
c
:-):-):-):-):-):-):-):-):-):-):-):-):-):-):-):-):-):-):-):-):-):-):-):-):-)
-Original Message-
From: Linstrom, John (IndSys, GEFanuc, CDI)
[SMTP:john.linst...@gefgreenville.ge.com]
Sent: Friday, September 17, 1999 2:44 PM
To: 'Price, Ed'
Subject: RE: help
My question: we have
)
[SMTP:john.linst...@gefgreenville.ge.com]
Sent: Friday, September 17, 1999 2:44 PM
To: 'Price, Ed'
Subject: RE: help
My question: we have a UL mark on a box we build. One of the requirements
that the auditors check is flammability of materials. 2 parts give us
trouble - a molded bezel
Dear Gary,
A terminal block ( I assume it is suitable for the number and size of
wiring to be accepted in the field and that it is Recognized/Certified
for field wiring) is an acceptable method for connection of telecom
equipment to the dc supply in a RAL (Restricted Access Location).
Since
Dear Tony,
All Devices connecting to the Public Switch Telephone Network (PSTN) needs
to be tested to FCC Part 68 before it can be sold in the US. This would be
similar to the testing that I expect you would have tested to, for the
crossed hockey stick mark for Europe.
The US requirements that
Hello TO,
From your inquiry, it seems as if you have covered almost everything to sell
your product in the USA - except the network protection requirements. All
devices connecting to the Public Switch Telephone Network (PSTN) will need to
meet this requirement. The requirement can be met by
Tony,
First, I'm confused. If you know that your product complies with FCC Part 15
and UL19050, why are you asking EMC and safety certification guidance in the
US? Or, are you just making the statement?
Anyway, compliance with IEC950 does not equate to compliance with UL1950.
There
Brian,
I've had good luck with Pacific Transformer Corp. in Anaheim, CA.
Their phone number is 714-779-0450, fax 714-779-0718.
Darrell
--
From: owner-emc-p...@majordomo.ieee.org
To: emc-p...@ieee.org
Cc: Brian Harlowe
Subject: HELP
List-Post: emc-pstc@listserv.ieee.org
Date: Wednesday,
It could be a document issued by the Health Safety Executive in the
UK.
Refer
http://www.open.gov.uk/hse/hsehome.htm
Arthur Poolton
Mitsubishi Electric - PC Division
2500 The Crescent
Birmingham Business Park
Birmingham
ENGLAND
B37 7YE
Tel : +44 (0)121 717 2611
Fax : +44 (0)121 717
HSE stands for Health Safety Executive, which is a UK institution.
More on them and on how to obtain their publications on
www.open.gov.uk/hse/publicat.htm
Regards,
Rolf Schaefer
Unisys
International Certification Centre
paris.die...@compaq.com on 06.08.97 15:19:40
Please respond
Check 47 CFR part 2 sections 803, 805, 806, 807 and 809. Essentially if your ISM
equipment is classified as a radio frequency device or digital device and
not selling to the US goverment you must comply with the technical requirements
of part 15, or part 18. Part 18 section 121 allows for
Georg,
I believe in the FCC book 47 CFR Sec. 15.103, titled Exempted devices is
what you are looking for.
Richard Georgerian
Product Compliance Eng.
Exabyte
tel.: 303-417-7537 fax: 303-417-7829 e-mail: richa...@exabyte.com
__ Reply
Dear George,
Look in 47 CFR 15.103 Exempted Devices. You are refering to section (b)
exempted from the technical requirements of part 15 are digital devices
used exclusively as an electronic control or power system utilized by a
public utility or in an industrial plant...
Jon D. Curtis, PE
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