Is it reasonable to say that internal ESD testing should be performed in
"casual access" areas as opposed to "user maintenance areas"? With PCs (for
example) being designed for user service, one would have to expect these
"service persons" to follow ESD maintenance procedures. Adding RAM, or
functionality obviously reaches a point at which "user service" would not
allow for ESD compliance. This could get a little gray in my opinion.
Rick Busche
Senior Engineer
Evans & Sutherland
-----Original Message-----
From: Jim Hulbert [mailto:[email protected]]
Sent: Friday, August 13, 1999 12:55 PM
To: [email protected]
Subject: Question on internal ESD testing
Egregious? Not necessarily. For our products, we will
discharge to internal
parts that the user can come into contact with during normal
operation or
maintenance. For example, if the user is expected to open a
cover to change an
ink cartridge, remove a paper jam, or perform some other
routine procedure, then
we would discharge to the areas exposed to the operator when
the cover is open.
However, we would NOT discharge to an internal area that is
not normally
accessed by the operator, such as a cover that is only
expected to be removed by
a qualified service or repair person.
Note that EN 55024 also states specifically that you are not
expected to
discharge to exposed connector pins. I guess that would,
in fact, be
egregious.
Jim Hulbert
Senior Engineer - EMC
Pitney Bowes
---------------------- Forwarded by Jim Hulbert/MSD/US/PBI
on 08/13/99 02:55 PM
---------------------------
"Grasso, Charles (Chaz)" <[email protected]> on
08/13/99 12:34:33 PM
Please respond to "Grasso, Charles (Chaz)"
<[email protected]>
To: "'EMC Group'" <[email protected]>
cc: (bcc: Jim Hulbert/MSD/US/PBI)
Subject: Question on internal ESD testing
Hello,
Does anyone in this august group apply ESD discharges
INTERNAL
to a product as required by EN55024.
I consider this just a tad egregious - don't you?
Thank you
Charles Grasso
Advisory Engineer
StorageTek
2270Sth 88th Street
Louisville CO 80027 M/S 4247.
Tel:303-673-2908
Fax:303-661-7115
email:[email protected]
Web Site:
http://www.ewh.ieee.org/r5/denver/rockymountainemc/
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