If you have DC/DC bricks etc they will have the short condition tested.
So yes, backplanes, PCA's etc. also are subjected to the test. Some of these
bricks are handling 60 amps etc.
Gary
-----Original Message-----
From: Roman, Dan [mailto:[email protected]]
Sent: Thursday, September 12, 2002 5:24 AM
To: EMC-pstc List
Subject: NEBS - Bonding and Grounding
NEBS Gurus,
Do the 1089 bonding and grounding DC short circuit tests apply down to the
component level in a system or are they limited to the power supply or some
other demarcation point? If it applies anywhere in the system it seems to
me that you'd never finish testing. You'd have to test the power supply,
backplane, mother board, daughter cards, IC dies...sort of like doing the UL
15W test for home entertainment equipment.
Reading through section 9 and specifically 9.8 it seems they are keying on
the power supplied directly from the CBN and not that power indirectly
derived from the CBN after DC to DC converters. Where is the demarcation
point if there is one? Do labs that test to NEBS handle this consistently?
Thanks in advance.
Dan Roman
Compliance Engineer
Intel
-------------------------------------------
This message is from the IEEE EMC Society Product Safety
Technical Committee emc-pstc discussion list.
Visit our web site at: http://www.ewh.ieee.org/soc/emcs/pstc/
To cancel your subscription, send mail to:
[email protected]
with the single line:
unsubscribe emc-pstc
For help, send mail to the list administrators:
Ron Pickard: [email protected]
Dave Heald: [email protected]
For policy questions, send mail to:
Richard Nute: [email protected]
Jim Bacher: [email protected]
All emc-pstc postings are archived and searchable on the web at:
http://ieeepstc.mindcruiser.com/
Click on "browse" and then "emc-pstc mailing list"
-------------------------------------------
This message is from the IEEE EMC Society Product Safety
Technical Committee emc-pstc discussion list.
Visit our web site at: http://www.ewh.ieee.org/soc/emcs/pstc/
To cancel your subscription, send mail to:
[email protected]
with the single line:
unsubscribe emc-pstc
For help, send mail to the list administrators:
Ron Pickard: [email protected]
Dave Heald: [email protected]
For policy questions, send mail to:
Richard Nute: [email protected]
Jim Bacher: [email protected]
All emc-pstc postings are archived and searchable on the web at:
http://ieeepstc.mindcruiser.com/
Click on "browse" and then "emc-pstc mailing list"
