Hello Group,
Happy 19101. Sorry this is so long. I thought it would be easier for
replies if the categories and numbers where already written out. I am at
the end of my tether trying to find out what creepage, clearance, and hipot
apply to our products application. I originally tendered this
Forwarding for Linda Hubbard hubba...@appliedbiosystems.com
-
At Applied Biosystems, we're making some of the biggest breakthroughs in
science happen. We're creating products that change the way researchers
identify and
Mike,
I am aware that both ANSI and CISPR are currently working on site
requirements above 1GHz. At this point all the work is being done in
committee and therefore the details are not ready for distribution. Not much
more can be said at this point.
Don Rhodes
Principal EMC Engineer
503.685.8588
Sorry for the clutter folks.just testing.
Kaz Gawrzyjal, P. Eng.
kazimier_gawrzy...@dell.com
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No argument there, Derek. I was looking at a wider picture which includes
personal computers under the FCC Rules. In that case, for self declaration,
an accredited laboratory is required. For the EMC Directive in Europe, no
accreditation is required.
Ghery Pettit
-Original Message-
Ghery,
in your reply it reads as though an accredited lab is required. I want to
make sure it is clear that for compliance with the EMC Directive it IS NOT
the case.
Use of an accredited lab may make life easier, but, I reiterate, it is not
required.
Best regards,
Derek Walton
Actually A14, in addition to redefining class D, it extends the no limits
clause to all equipment less than 75W, except lighting equipment.
-- Forwarded by Jim Hulbert/MSD/US/PBI on 01/03/2001 04:19
PM ---
Mike,
Nothing in ANSI C63.4 or CISPR 22. This is a known weakness in both
committees and it will be worked. Just can't say when. The new version of
C63.4 (coming out soon) does not yet address this. There is nothing going
on in CISPR SC G to add this to CISPR 22. I would suspect that CISPR
No problem using an in-house lab. Just make sure it has any necessary
accreditations and approvals and operates under an ISO 17025 quality plan.
ISO 9000 doesn't make it in the laboratory world. Our labs are accredited
by A2LA and others and there hasn't been any question about using their
data.
FYI:
From Webster's Third New International Dictionary:
STODDARD SOLVENT: a straight run petroleum naphtha fraction of low
flammability containing principally aliphatic hydrocarbons and conforming to
specifications (as water-white color, distillation range 300°F to 400°F, and
a flash point
I think that you can draw the line at the scope of the standard.
Does your product fall under the scope of EN 61000-3-2/3 ? If it does, then
the standard does apply. This means you had to actually look at the
documents in order to find current/voltage levels ... in order to determine
what
I think, that there is substantial difference in the products that we use
on the glues that affix plastic and paper labels.
We currently experiment with applying label remover , a product sold to
remove
paper and plastic labels from furniture.
it bears no specific warning label but the square
In general, I find, the national implementations of EC directives are
less ambiguous and easier to understand that the directives
themselves so EMC-PSTC readers may be interested to note that the UK
government has now got the full text of all statutory instruments and
Acts of Parliament
Depends on the class of your equipment. No limits apply to class D equipment
under 75W (reduced to 50W four years after implementation date of the standard).
I believe class A, class B, and class C equipment do need to meet their
respective limits regardless of power as long as the input
I got the same confirmation from Agilent Netherlands.
I cannot recommend the purchase of Agilent equipment
for harmonics , flicker etc. to regulatory purposes at the moment.
Basically it's the software that becomes obsolete.
I think your 68xx system will be obsolete but for
precompliance
Does anyone know of any Normalized Site Attenuation measurements above 1
GHz? I'm specifically interested in whether or not ANSI C63.4 or CISPR-22 is
planning this, and if so, is there any preliminary info?
Any help would be greatly appreciated.
Thanks,
Mike Cantwell
The AT205 loop spec'd in MIL-STD-461 (basic and rev. A) is 13.3 cm in
diameter. It is rather inefficient at the low end (20 Hz). The
Electrometrics MFM-11, which began life in the '60s as a magnetic anomaly
detector (MAD) has a sensor wand that easily fits in the palm of your hand.
it has a
The accurate volume is about 1/3 by 1/3 of the outside dimensions. At least
that's my measured experience.
Just means one has to make a rather large Helmholtz for a large sensing
coil. And my recollection of most sensing coils in that range are that
they're over 1/2 meter in diameter. I've
Annex A of IEC 61786 specifies the field at the center of a square loop with
side dimensions of 2a to be
B = 1.414 u I N / pi / a, where
B = the normal field component at the center
u = permeability of air
I = Current in Amps
N = turns
If the loop is 1 m square, the field will vary no more
Hi Craig:
Be careful:
EN61000-3-2 - Applies only to products with input power higher than
75W. Per paragraph 7.4 of the standard, no limits apply for equipment
with an active input power up to and including 75W.
No. The standard does NOT say that it applies only
to products with input
Craig, here is my opinion. Your equipment does fall into the scope of the
two standards. The exemptions are not listed in the scope. Compliance is
mandatory for devices listed in the scope, but some devices are exempt from
testing as noted elsewhere in the standards. Therefore, if your equipment
Colgan et al,
We just received a full one-page letter from Agilent dated 19 December
2000, if I may reduce it to the essential messages:
Agilent DISCONTINUES any plans to support A14.
Agilent DISCONTINUES as of 31 Dec 2000 (or 1 Jan 2001) the
14761A/62A/63A software packages for
This is probably a gross over-simplification, but I want to make sure I
understand the applicability of the new EN61000-3-2 (harmonic) and EN61000-3-3
(flicker) standards.
In reviewing the standards as well as previous communications within this group
I have arrived at the following
I would like to bounce something off the group.
What are the complications of self-declaration without an independent test lab
being involved?
Very Simply said the way I understand it:
1. You need calibrated test equipment and facilities to do the tests required
for your product.
1.1. Except
It is located in Dayton, Ohio, very close to the I75 and I70 interchange. Jim
Reply Separator
Subject:Re: Screen Room
Author: Hans Mellberg ha...@cisco.com
List-Post: emc-pstc@listserv.ieee.org
Date: 12/28/00 2:33 PM
it would help to know
Forwarding for Mothish, please keep him on your cc list as you respond.
Reply Separator
--- Mothish moth...@vsnl.net wrote:
--
From: Mothish[SMTP:moth...@vsnl.net]
Sent: Monday, January 01, 2001 10:24:56 AM
To:
You can go to the following site: http://www.comm-2000.com/;
This is the new UL vendor for standards.
UL 60950 is at the bottom of the following page:
http://www.comm-2000.com/ULstandard7.asp?PassCondition=ALLPages=16;
Took me about a week to get one in the mail and they also have electronic
All,
Happy New Year!
One of our European sales reps is asking about a standard which he calls
ETSI N3. I'm drawing a complete blank with this one and N3 brings up
nothing on ETSI's homepage.
Anybody got any ideas about this one?
As always, the help of the group is greatly appreciated.
Chris
The easiest to way to calibrate a magnetic field sensor in the audio
frequency range is with a Helmholtz coil or a solenoidal coil. A Helmholtz
coil is two coils of radius r with the planes of the loops also separated by
distance r. The magnetic field between the coils and at the center of
Jacob -
I have both a paper copy and an electronic copy, so they should be
available, though, as you say, not introduced into the electronic systems of
suppliers. You can call IHS to see when they'll have an electronic copy or
if they have a stock of the paper versions (IHS has been handling UL
Peter Tarver, in the message below, mentions he obtained a new edition of
the IT safety standard CSA60950/UL60950.
I have been unable to locate a Dec. 1, 2000 edition of UL60950 on the IHS
Global DOcument website, nor have I found a CSA60950 on CSA's website.
Global only shows the proposed 3rd
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Years ago, I carried some equipment to Marble Falls, Texas, to test at
Professional Testing, Inc's OATS there. I remember one of the sites having
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