I have received very little response to this one, so I thought I'd post
it again.
Aren't there any permanently connected ITE equipment mfr's on this
forum?! What do you provide in the way of knockouts or ...???
Thanks,
Jim Eichner
Senior Regulatory Compliance Engineer
Statpower Technologies
Mixing apples and oranges here. The original question, see below, was about
SR3580 Criteria levels. This has nothing do with test levels. It does appear
to address what tests are required but, it more addresses a risk level. If
you are selling these folks a typewriter, SR3580 just classifies it
Leslie,
See below the recommendation of our thermal engineer.
Jim Knighten
Dr. Jim Knightene-mail: jim.knigh...@sandiegoca.ncr.com
mailto:jim.knigh...@sandiego.ncr.com
Senior Consulting Engineer
NCR
17095 Via del Campo
Jim,
I cannot help admiring you to have found an article published almost one year
ago, which just mentioned a few words about NEBS Levels.
Please allow me to cite relative paragraphs from the article you recommended,
and then ask some questions.
= Citation
Even after CLECs
On point 2, I will try to do the following simple test at EMC Compliance. I
will take my DRG horn (1-18 GHz) and place it about one foot from my screen
room wall. I will place a directional coupler between signal source and
antenna, and measure forward/reverse power at 1 GHz. Then I will take
Richard,
Refer to my answers in the body of your text:
I can find nothing in IEC 950 nor EN 60950 that defines the requirements for
an attachment plug for equipment that is not permanently connected. Due to
the silence of the standard, I conclude that an attachment plug is not
required
Hi,
I would think a thermocouple would be OK. It should be close to +/- 1 deg.
C. If you need better accuracy, try a RTD. It should be +/- 0.1 deg. C.
Ned Devine
Entela, Inc.
Program Manager III
Phone 616 248 9671
Fax 616 574 9752
e-mail ndev...@entela.com
-Original Message-
Scott,
Thanks for your input.
How about the probe?
Any recommendation?
Thanks
Leslie
--- Lacey,Scott sla...@foxboro.com wrote:
Leslie,
The Fluke Model 51 or 52 should be adequate for your
needs. These are
battery operated thermocouple instruments, single
and dual input models.
They
Darrell and George,
With the window removed does the opening yo create meet the fire
enclosure requirements in the standard? If so, per UL1950/EN 60
950 you can declare the plastic part as an electrical or mechanical
enclosure part with flame rating of minimum 94HB. You must
check your
Dear Lopez,
UL1419 if product is for professional use or UL1492 if product is not
for comercial use. But best is to use UL6500 since it is
harmonized with IEC 65. Both UL1419 and UL1492 will be
eliminated within a few years and replaced by UL6500. The first
edition of UL6500 is currently
Leslie,
The Fluke Model 51 or 52 should be adequate for your needs. These are
battery operated thermocouple instruments, single and dual input models.
They are relatively inexpensive, and I would strongly recommend the dual
input model for the extra features, as well as the ability to measure
Dick, good luck in getting a government office to assist you. Since your
equipment is not licensed, you have no legal right to expect freedom from
interference. Generally, the PTTs just don't care about interference with
non-licensed services. Good luck.
--
From: Dick
Hello, group:
Seems that my question is not relavent
to this group but hope someone there
could help.
I am looking for an ACCURATE temperature
probe ( accuracy is about +/- 1 degree C
from -50 to +80 degree C). It will be used
to measure the microwave frequency
drifting over the temperature.
There is a new company in Rockford, IL. that is setting up to calibrate EMC test
equipment. They are called Forrest City Instrument Calibration.
If you would like info e-mail me, I'll try to get a hold of an electronic
version of their brochure...
Best regards,
Derek Walton.
OwnerL. F.
To all interested parties:
For all those seeking a copy of the presentation - Good News!!
There will be a presentation available in pdf format about 1 week after
the meeting.
I will send the link out when the download is available.
-
This message is coming from the emc-pstc
When you say sheet form, I assume you mean thin materials like .020-.040
inch. You probably will not find any materials that are rated for the
94-5VA test. There are some thin materials like the GE Lexan FR grade, or
Bayer Makrofol EPC that have 94V-0 ratings and may pass your test. Keep in
Good Day All - Being a new member (1 mth) on this forum, I want to say it
has been very informative. Some of the responses to questions asked are
interesting and enlightening to say the least. Some of you have vivid
imaginations - which is good! Now lets get to my question. Does anyone know
of
To prove the point delivered below, see the Bell Atlantic Check List (now at
Rev. 9) that specifically states this:
1.1.1.1.NOTE: Bell Atlantic does not use or endorse the various
conformance levels as described in Bellcore (BCR) Special Report (SR) 3580.
1.1.1.2.All suppliers
Perhaps you could use a metal screen behind the window. The screen would act
as the fire enclosure and then the plastic could be rated HB. However, hole
size in the screen could be an issue for viewing as well as complying with
the fire enclosure requirements.
--
From:
-Original Message-
From: Doug Piper [SMTP:doug.pi...@wovenelectronics.com]
Sent: Wednesday, October 06, 1999 7:18 AM
To: 'Price, Ed'
Subject: RE: A Viral Story
Ed,
Do you mind telling me what kind of virus filter did you use to catch the
virus in the mail server?
Ken et al,
I don't think these particular mag sheets evoke anywhere nearly so strong a
magnetic field, I can't measure it here. But, I can put a strip of it over
three different color video monitors in our lab and see absolutely no effect on
color purity and no movement of pixels. The stuff
Here are the vendors that you can try out.
Simco
10200 Pioneer Blvd.
Santa Fe Spring, CA 90670
800-235-6990
Contact: Jim Merriam
or
Schaffner
12 Hughes Suite D-106
Irvine, CA 91718
714 (or 949) - 457-9400
Ngoc Le
Sr Quality Engineer
Newport Corp.
-Original Message-
From:
I can find nothing in IEC 950 nor EN 60950 that defines the requirements for
an attachment plug for equipment that is not permanently connected. Due to
the silence of the standard, I conclude that an attachment plug is not
required per the standard. Therefore, it appears that the plug wiring
Hello All,
I'm looking for a plastic material that can be used as a window on a fire
enclosure door. This material must be available in sheet form, be able to
withstand impact and be rated 94-5VA. I referenced the (1996) UL plastics R/C
directory and found nada. I know, I need to buy the
I don't know if the mag sheet would polarize/saturate the ferrite tile, but
I have two questions:
1) If the tile were saturated and needed de-gaussing, how could a 1000-4-3
radiated field do this?. The magnetic field density associated with the
peak of a 10 V/m field is about 1 mG. This is
Joe: check this web site:
http://europa.eu.int/comm/dg03/directs/dg3d/d1/eleng/index.htm
it's all there. click on emc, then click on slim.
bottom line: they are going to review the emc directive. ( no surprise there.)
Lou
Gary, all,
The following is from Doug McKean.
By the way, at room temperature (20 degrees C, 293 degrees Kelvin)
and 1 atmosphere at sea level (760 mm mercury,) this formula
simplifies to:
V(kV)= 24.2h +6.1(h)^0.5
where
V is the breakdown voltage in KV
h is electrode spacing in cm.
For those of you who are interested in the Colorado Product Safety Technical
Committee (CPSTC) minutes for September 15, 1999, please link to the Product
Safety Newsletter (PSN) new website at:
http://www.ewh.ieee.org/soc/emcs/pstc/
Richard Georgerian, CPSTC Chair
PSTC Secretary
Product
Aside from a comb generator, what do you mean by a broadband source for
chamber correlation?
--
From: michael.garret...@radisys.com
To: emc-p...@ieee.org
Subject: Rental Source for Broadband Source for Chamber Correlation
Date: Tue, Oct 5, 1999, 1:29 PM
Group,
I seem to be having
I was going to paste the relevant paragraphs of this article but perhaps the
website text might be easier to read.
http://www.techweek.com/articles/11-2-98/dsl.htm
Jim
-Original Message-
From: owner-emc-p...@majordomo.ieee.org
[mailto:owner-emc-p...@majordomo.ieee.org]On Behalf Of
You can order programmable relay controllers from Newark or Allied
electronics. Omron makes some good ones for this test. They run about
$150.
The inductor will have to be custom built using E and I cores and if
done correctly will weigh about 75 to 100 pounds (assuming you need to
source any
Hello Randall,
We have the same model. We have ours calibrated at Liberty Labs
(www.liberty-labs.com). They are responsive and price competitive. Hope
this helps.
Don Umbdenstock
Sensormatic
--
From:
randall.flind...@emulex.com[SMTP:randall.flind...@emulex.com] on behalf of
Hi folks,
I've thought about seeing if anyone was interested in a time share scheme for
such a
device, perhaps with 12 members. Cost would be about $300, each getting it for a
month on rotation, or for short duration's if needed urgently.
By the way, a good 10 MHz and 100 MHz SMD oscillator
Does anyone have any experience with SBC's TP76200MP document?
I'm specifically looking for information on how to do some of the tests
in Section 8 DC Power.
Where can I get/make an Electronic Switch/Relay of Figures 8-3 and 8-5?
Where can I get/make the 0.08 H inductor?
Any help is
This question comes up again and again. Not necessarily in this forum, but from
Sales Engineers all over the world. Please, Please keep in mind that these
levels ARE NOT endorsed by any North American Telcos that I know of (please
prove me wrong). Each Telco seems to have their own set of
Is anyone aware of the results of the SLIM III recommendations per the Report
of the SLIM III Team on Electromagnetic Compatibility Directive (89/336/EEC as
amended) dated 9/98. I had heard that the Commission was going to produce a
Communication to the Council of Ministers and the European
A small blurb on this came across the list-server awhile ago, unfortunately,
I moved companies and apparently didn't get this out of my electronic filing
cabinet. Did anyone else save this tidbit? And would they forward it to me
again.
It was the basic formula and a brief discussion of the
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