Hello to all,
I have heard that the JATE Blue Book:2000 (in English) is freely available for
download. Is it
actually available for free download? And if anyone knows about this, then
please share the web
address to do this.
Actually, I have been at JATE's website,
David,
Forget the pencil eraser. This is the same deal as using one to clean
battery contacts. Works great - for a short time. Look on the web for Caig
Laboratories, Inc. they make a series of chemicals that are meant to
deoxidize metal contacts. I've used their DeoxIT D5 for years. I call it
Dear colleagues,
Hope a job posting for a compliance engineer position will not do too much
harm to the scope of this group. For those close to or willing to move to
Montreal, Canada, please see the summary below.
Alexandru Guidea
CAE Inc.
Montreal, Canada
Here is a summary of the required
I'm sure there are products on the market
just for this purpose.
But I would be concerned about my design if pass/fail
depended upon how clean the mating surfaces are.
A component substitution or some other ECO to the
product down the line could put the product over
the limit. Refer to the
David Heald wrote:
I'm preparing for an emissions test and I had started cleaning some of
my chassis mating surfaces with a pen/pencil eraser then alcohol to
ensure the surface to surface contact was good.
David,
This is an ever present help in time of trouble. Don't do it. (grin)
Cleaning
I'm not trying to be antagonistic, but unless you plan
to perform this procedure on all production devices -
neither should you do so to the test sample(s).
My 2 cents worth.
Regards,
Stephen
At 02:43 PM 2/28/2002, you wrote:
All,
I'm preparing for an emissions test and I had
I read in !emc-pstc that Chris Chileshe chris.chile...@ultronics.co.uk
wrote (in 01c1c055.2b424100.chris.chile...@ultronics.co.uk) about 'ESD
Generator confidence test (humor)', on Thu, 28 Feb 2002:
Can we extend this principal to confidence tests on surge equipment
using middle management and
All,
I'm preparing for an emissions test and I had started cleaning some of
my chassis mating surfaces with a pen/pencil eraser then alcohol to
ensure the surface to surface contact was good. A friend then told me
that using an eraser would also remove the anti-corrosive coating that
was on
Russell,
The margin issue is usually a much discussed subject when it comes to
initial product EMC emission certification. As most experienced EMC
engineers know that variances in production units will occur. Also to ensure
that if a production unit is tested in a different 'accredited lab' a
Russell (r@totalise.co.uk) wrote:
I'm looking at an ambient scan starting at 32dBuV/m @ 30MHz, dropping to
18dBuV/m @ 70MHz then gradually (with small peaks and troughs) rising to
41dBuV/m @ 1GHz.
Russell,
Are you sure these are room ambients? They might be the analyzer noise
floor.
Et Al:
Another important point to consider on safety margins is how the site
performed for Normalized Site Attenuation (NSA) when applicable.
A +/-4dB variation is the maximum allowable for NSA based on the premise
that 1.5 dB is attributable to the site uncertainty and 2.5 dB is
attributable
Greetings All,
I am interested in finding out if any of the group has tested or is testing
using 1000baseT hubs as part of their setups and found any that are
relatively quiet from an RF emissions perspective.
Thanks in advance.
Ron
Ron Longmoor
EMC Test Engineer
Motorola
The attached message had PERMANENT fatal delivery errors!
After one or more unsuccessful delivery attempts the attached message has
been removed from the mail queue on this server. The number and frequency
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YOUR MESSAGE WAS
One other life lesson one I learned about ESD test areas. One should
always check that the drain wire is actually in place before on stands on the
ground plane and zaps the heck out of some equipment at 20 K or so. I was
trying to leave burn marks in the plastic housing to show me
One indicator is actually present BEFORE applying this test; the extension
of the subject's middle finger in the tester's direction!
Cortland
---
This message is from the IEEE EMC Society Product Safety
Technical Committee emc-pstc discussion list.
Visit
Alex,
Go to the following link for Telcordia (formerly Bellcore)
and click on 'Document Center'.
The LSSGR (Lata Switiching Systems Generic Requirements) are
available from there.
http://telecom-info.telcordia.com/site-cgi/ido/index.html
John Juhasz
Fiber Options
Bohemia, NY
-Original
Hi Group,
I am not too familiar with the North American requrements:
Our customer has requested Surge Protection testing to the Bellcore LATA
Switching General Requirements. 600 Vpk metallic, and 2500 Vpk
longitudinal.
1. Are you familiar with this spec?
2. Are these requirements covered in
This brings up a good real life story.
I used to work with a technician (John) who helped with our in-house
compliance testing. One day, we were discussing the Horizontal
Coupling Plane (HCP) which has a 1MegaOhm drain wire to the Ground
Reference Plane (GRP).
His theory was that he could
Hi Group,
Thanks to all who responded on my query. The response was as usual of a high
calibre.
Thanks to this forum I can proceed with the project plan, confident that I
have got the Compliance/Regulatory section spot on!
Kind Regards
Alex McNeil
Principal Engineer
Tel: +44 (0)131 479 8375
Russell,
At IBM and Lexmark, our EMC department was comfortable if one unit
showed at least a 3dB margin between the measured emissions and the
specified test limits. If we were a little closer than that, and unable
to improve the margin for whatever reason, they would have us test two
more
I read in !emc-pstc that h.knud...@niros.com wrote (in DCFCB38F97E9CF46
bdb4d995ffdd83282bb...@mail.daniro.dk) about 'SV: Screened Room Ambient
Scans', on Wed, 27 Feb 2002:
May be you should consider a pre-amplifier.
Is there any reason to use a preamplifier apart from the possibility
that its
Michelle,
On Wed, 27 Feb 2002 14:45:31 +0900,
Michelle Cho / INT Compliance m...@intcompliance.com wrote:
Could anyone give me some details about PSE mark and the test lab
who can give me quote?
I guess what you mean is the marking required by Japanese DENAN.
Short introduction I wrote is
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