Does anyone from this group have experience with EN 50090-2-2:1996. It is
titled Home and building electronic systems (HBES) -- Part 2-2: System
overview - General technical requirements
What products fall under its scope? (TV, Stereo, thermostats, microwave
ovens)
Are there any surprises
Dear Cris,
Sorry, your company seems to have unlimited resourses. It could have spent
much less by doing diligent search and getting in touch with some U.S.
companies accredited by the Russian GOSSTANDART (in fact, some NRTLs) or
directly working with Russian Cerification Centres. Those labs'
God results
My good, did I say that?
Jim
Dr. Jim Knightene-mail: jim.knigh...@ncr.com
jim.knigh...@ncr.com
Technical Consultant - Design
NCR
17095 Via del Campo
San Diego, CA 92127 http://www.ncr.com
Hey Jim,
It is my sincere wish to get god results from my test equipment. Alas,
regardless of equipment cost, I usually wind up somewhat lower. The 8593EM
is now on the top of my wish list. ;-)
As to the price issue, it is very conceivable that a relatively small
investment in a single feature
Having played with phase based cancellation some, the true nature of the
problem is quite complex (pun intended). Using simple systems as Cortland has
mentioned, allows you to null a single phase path to the ambient.. Since I
tried this at an OATS in the mountains, it was a rather dismal
I too have a problem with application of DOC or DOI. We produce
Programmable Logic Controllers and associated Input/Output cards. I've been
told I should use the DOI since the PLC will be incorporated into some
larger machine that it will control and that the I/O cards will be
incorporated into
Benoit,
That query with customs was done by our people in Taiwan, possibly in the Tokyo
office. I only had a brief report from them and no classification codes. They
contacted the BCIQ at my urging to learn about the EMC regulation and in the
process talked to the customs people there and
Most esteemed colleagues, we are looking for your professional opinion on a
UL 544 leakage limit (I think you will find this interesting):
1. This particular product uses a UL 544 evaluated direct plug in power
supply with outputs to the patient care equipment. In this case it is a
diagnostic
Maybe some on from this group knows about EN 50090-2-2:1996. It is titled
Home and building electronic systems (HBES) -- Part 2-2: System overview -
General technical requirements
What product fall under its scope? (TV, Stereo, thermostats, microwave
ovens)
Are there any surprises compared to
Derek: Try Steward at
http://www.steward.com/emi/circuitboards/hicurrentchips.html
for single chip devices up to 8 amps or
http://www.steward.com/emi/circuitboards/multhighcurrent.html
for multiline ferrite blocks. You should find what you need there
Jim Allan
Senior Compliance Engineer
Although I am also a sales rep (and an engineer!) I agree with the fact
that a preamp and or pr- selector can make a considerable improvement to
the SA's performance. Schaffner/Chase's preselector was designed especially
to work with all SA's and particularly the Advantest.
But, you might also
Hi Martin:
There are three issues in your message:
1) compliance to the standard;
2) reasonableness or appropriateness of the standard;
3) value added to the product through compliance.
You point out that messages posted to this list address
compliance to the standard, but not the other
The question is posed; what is the wisdom behind all these standards?
Indeed the are numerous standards that have been, are, and will be brought
into existence effect every aspect of our various industries. The history of
the beginnings of these regulates can be traced back to the events of the
Bonjour de Montreal,
I've been doing this for years, the special requirement by the FCC is that
when your Class A device is installed in a Class B computer and
functioning, the overall system is considered Class A. But when your Class
A board is installed and not functioning, the system still
Derek,
Try Steward (http://www.steward.com)
- HI 1806 T 600 R, 60 ohm @ 100 MHz, 6A, or
- HI 1812 T 800 R, 80 ohm @ 100 MHz, 6A
I hope this helps
John Radomski
Inter-Tel Integrated Systems
lfresea...@aol.com on 03/24/2000 09:02:04 AM
Please respond to lfresea...@aol.com
To:
In cases where the standard is a public standard, i.e. law,
then we are obliged to comply no matter what we think, agree
or disagree. In cases where the standard is a private
standard, it is sometimes negotiated with a customer thru
contracts.
This may give the sense that two things
Maybe I'm reading Martin's message wrong. If I am, then I apologize.
Here's my response to Martin's message.
Based on what I've learned (?) over the years, the intent of these standards
is to
control interference. I think this is a good thing. I don't necessarily
agree with
some of the limits
The exclusion of harmonic test requirements in EN 61326 for equipment which
need only meet Class A emission limits was a deliberate decision by the
authors. It was not an omission by error. Many outside the committee now
view this decision as a mistake.
There is no revision in progress.
Hello Eric,
Bonjour de Montreal,
Following your comment about Taiwan exemption, do you have a reference document or Web site to support your exemption. I know that National Instruments built PC Add-on cards and Matrox do so as well and in the BSMI web page
Ray,
The answer depends on whether your compressor is a component or a finished
product. Component = yes, product = no way.
Scott Lacey
-Original Message-
From: Russell, Ray [SMTP:ray_russ...@gastmfg.com]
Sent: Friday, March 24, 2000 10:14 AM
To:
Chris,
I am experienced in performing pre-compliance measurements with a spectrum
analyzer and preamp. I use a Hewlett Packard 8593EM Spectrum Analyzer and
an HP 8447D Pre-Amplifier with god results. As mentioned by another
responder, the spectrum analyzer is designed to function as an EMI
A company called Caddock (www.caddock.com) makes high voltage non-inductive
resistors. I didn't see anything in their on-line short order catalog that
would work. It would be worth a try to contact them and give them your
requirements.
Good Luck!
-Original Message-
From: Mike Hopkins
If the product you are selling is a component or sub assembly that will be
installed as part of a finished product, then yes you can do what you
purpose. Make sure you document what needs to be done and why. Most DOCs
have a section labeled Supplementary Information:. I would place a note in
Martin,
While I may disagree with some of the technical content of various standards
(I think they need to add more details to accommodate smaller, more
distributed systems), I heartily agree with the need for them. The immunity
tests in particular represent real-world threats to equipment, and a
Hi all,
I'm looking for a ferrite bead that has a steady current rating of at least 6
amps. It should also be able to withstand 5 seconds intermittent increases to
15 amps. Performance during the 15 pulse is not really necessary but survival
is, it's a fault condition
Any impedance
Greetings,
We sell an air compressor with a DC motor. This motor requires a capacitor
across the DC supply lines to meet the EMC requirements. Of course
management does not want to supply the capacitor, they want to describe it
in the documentation, and add a note on the Declaration of
I've been reading messages from this list for several months,
and I see many questions about how to comply with the long list
of EMC standards. Yet, I can't recall anyone ever questioning
the appropriateness of any standard. That is, should the
standand add value to a product or to those who use
Bellcore 4.5.9 Intrabuilding lightning calls for testing with 2/10us waves,
but as David says, allows for the use of resistor networks added on to a
1.2/50us generator. 2/10 generators for both 2 and 4 wire applications are
available for roughly the same price David paid for the Schaffner unit,
The kind of preselector associated with a receiver, or a high end analyzer
like the HP8566 has a tunable front end that tracks the analyzer tuned
frequency. This will solve your problem, but at great cost, plus I don't
know of one that would work with your analyzer. The after-market kind of
John
Thanks to you and eveyone else for the replies.
The model is the R3361A.
I guess the next step is to find a R3351 preselector/preamplifier (or
equivalent).
Regards
Chris Colgan
EMC Safety
TAG McLaren Audio Ltd
mailto:chris.col...@tagmclarenaudio.com
-Original Message-
Chris,
We use an HP spectrum analyzer that allows you to program in the factors
including pre-amps. Without a pre-amp, our noise floor would render our
measurements useless, even in our semi-anechoic chamber. The noisefloor
drops with the addition of the preamp when the preamp factors are
Greetings all
I have an Advantest spectrum analyser with a quasi peak detector that I use
for pre compliance work. I am having trouble with the high noise floor and
I am concerned about my measurements reading low due to overloading the
detector (no input attenuation due to the high noise floor
Hi Tania:
For example, I always thought that it was a perfectly ridiculous idea to
require that all equipment falling under the scope of IEC 950 should be
double insulated, as pushed by certain Nordic countries many ages ago.
Until--- until it was pointed out to me that certain
George,
I am not offended, since I would never assume that anyone in this group
would deliberately desire to do so.I just felt that you may have been
making certain assumptions not borne out by history. We very often do that
when we don't know or don't understand the background.
For
I have tried for years advising our International Sales Marketing group to
budget into their yearly budget plan the cost of compliance. As usually when
I try too find a dept. account number with some cash in it to reference on
my PO's I get to this strange look back - like what are you
I have received more than two from different parties, is there an issue with
the 'EMC-PSTC' server, etc. I thought it may have been on my end.
-Original Message-
From: John Allen [mailto:john.al...@rdel.co.uk]
Sent: Thursday, March 23, 2000 9:28 AM
To: 'EMC-PSTC'
Subject: RE: Sizes for
In additon to Tania's comments Russia has been a full contributing member of IEC
since 1907 a time when communism was just a lone Frenchman's idea.
Don't write back about the Marx brothers he was a little late in distributive
economic ideas.
Jerry Roberton
Grant, Tania (Tania) wrote:
Egon,
If your compliance team's awareness and strategy are right the bean counters
and pimply faced types would never know there was an issue. Just have
answers ready to supply before they ask the questions.
Jerry Roberton
International Compliance Specialist
NET Europe Ltd.
Egon H. Varju
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