Texas Instruments (TI) has switched to a palladium lead finish to address
European environmental concerns associated with lead disposal. There have
been documented failures of the hygroscopic dust test attributed to
palladium coated leads. TI is aware of the problem, but to my knowledge
nothing
John,
Excessive voltage gradients are what causes failures in this test. I'd
suggest looking at each chip and finding the worst case voltage gradients
between pins. You can start with your supply voltage (battery or AC) to
ground separations. If you have a voltage gradient in excess of
I thought I would try to contact the collective on this one...
We have a shelf system that is failing GR-63 hygro dust with excessive bit
errors (unit did pass Gaseous contaminants no problem). Air is filtered.
Anyone have experiences that they would like to share (non-proprietary of
course)
Hi Don.
Thanks for the example. Hearing about these kinds of experiences makes
troubleshooting easier for everyone I think. Thanks to Chris Maxwell for
his contribution too. It'd be great to hear more stories from the
experience of some other members of the group.
I think your approach was
Thanks Michael.
I agree completely. Even though my comments probably didn't reflect it too
well(hastily bashed out late on a Friday afternoon), changing one thing at
a time is how I'd normally work on these problems.
At 10:59 PM 15/09/2000, michael.sundst...@nokia.com wrote:
I might add
These are great books for EMC design. Can the group recommend a similar list
of books for troubleshooting EMC designs?
Richard Woods
--
From: Ron Pickard [SMTP:rpick...@hypercom.com]
Sent: Friday, September 15, 2000 5:00 PM
To: emc-p...@ieee.org
Richard,
at the risk of pushing my own barrow
L F Research is preparing to host a 2 day course on EMC Engineering ( 1st
week in Nov. ). This course will focus more on the lessons learnt during our
last year of engineering and testing designs that came into our facility
Very much a
NPSS - Workshop 2000 Vendors' Night
The Northeast Product Safety Society, Inc. (NPSS) offers Workshop
2000 and the 6th Annual Vendors' Night. These paired events will
be held at the Boxborough Woods (Holiday Inn) in Boxborough MA on
November 15, 2000.
WORKSHOP 2000
Was Amendment 14 accepted?
I understood that it was suppose to be voted on last Friday.
Joe
---
This message is from the IEEE EMC Society Product Safety
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To cancel your subscription, send mail to:
Follow-on question:
Just to be really sure I haven't missed anything, A14 is a clarification of
requirements and test methods and does nothing to postpone the drop dead
date for this standard, right?
Thanks,
Jim
-Original Message-
From: Tolbert, J. Joe x1105
On a similar note, our Notified Body (SEE) informed us today that they will
accept use of prA14 in a TCF.
Richard Woods
--
From: Tolbert, J. Joe x1105 [SMTP:jtolb...@genicom.com]
Sent: Monday, September 18, 2000 1:34 PM
To: 'emc-p...@ieee.org'
A14 moves all equipment out of Class D except for personal computers and
televisions, and the 75 lower limit remains. However, the dop is scheduled
to be after 2001-01-01. Until then, our Notified Body (SEE) is accepting
prA14 for use in a TCF.
Richard Woods
--
From:
Hi Richard,
For troubleshooting, you might want to look for a book recently authored by
Michel Mardiguian entitled EMI Troubleshooting Techniques (copyright
2000). Its published by McGraw Hill, ISBN 0-07-134418-7. I have only just
purchased a copy at Barnes Noble and have not had an
I too ordered that book from Barnes and Nobel for $60, then I found out that
Amazon.com sells it for $48. Next time, I will check out both sites before
ordering.
Richard Woods
--
From: Ron Pickard [SMTP:rpick...@hypercom.com]
Sent: Monday, September 18, 2000
Hello group,
Does Australia implement (or plan to implement) limits for conducted emissions
on telecom ports as in EN 55022:1998?
Also, who makes T-LISNs for these tests?
Thanks,
David.
David Gelfand
Regulatory Approvals
Memotec Communications Inc.
Montreal Canada
As a newcomer in the world of EMC, I have found EMI Troubleshooting
Techniques (ISBN 0-07-134418-7) by Michel Mardiguian to be very good. It
is published by McGraw-Hill, and is available on their website at
www.books.mcgraw-hill.com.
Regards,
Fabian Spadaccini
TA Instruments-Waters LLC
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