The standard IEC-801-2/EN set describes ESD testing in general for ITE type
equipment but I think they are woefully lacking when you are talking about
operator interfaces and things people touch. The rear of a computer cabinet
is a lot less susceptible IMO that something that people have to touch to
use on a regular basis. Human's are really just a big bag of electronic
charge pus, just waiting to transfer the charge.
When dealing with these issues I have always used 12 K minimum without no
errors, 16 K with no operator intervention errors and up to 20K with no
destruction. Interestingly enough those companies that generally have strong
design departments that I have worked with have similar requirements.
If your building industrial control equipment you may want to up those a tad
as well, 16 k with no errors. The consequences of sending a wrong code via
the interface to the equipment is generally a much bigger deal that an
computer user having to re-type some information.
Gary
-----Original Message-----
From: Biggs, Daniel (IndSys, GEFanuc, NA)
[SMTP:[email protected]]
Sent: Friday, July 30, 1999 7:01 AM
To: 'EMC forum'
Subject: Operator Interface Displays
Does anyone know of a standard that talks about the testing
requirements on
a display/keyboard interface. I am interested in knowing what kind
of ESD
tests to perform on it. Are contact, air and indirect discharge
necessary?
Does anyone have experience with Operator Interfaces? Are there
particular
levels that they have to meet?
DB
___________________________________________________________
Daniel W. Biggs
Test Engineer
HW Development Process
Engineering Services
[email protected]
GE Fanuc Automation
PO Box 8106
Charlottesville, VA 22906
PH: (804) 978-6946
Fax: (804) 978-5588
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