There is so much involved in NEBS testing that it would be hard to qualify
individual components. A hard disk or power supply might pass the temperature
and vibration tests, but the final configuration will determine EMI
performance. The fire testing is impossible to do on most of these components
unless they are sealed in their own case.
The high cost of even limited NEBS testing would discourage most component
manufacturers from doing much of the work. I can't imagine somebody investing
the money for the testing unless they have a likely customer lined up.
Filters are one of the few exceptions. They can be tested to see if they will
contain a fire within the enclosure and they don't need to do much else.
(They may need to help provide part of the EMI screening, but that isn't too
difficult to analyze.) Because of their simplicity, little testing is
required. However, you need to find out what is covered by the "NEBS
compliance" of the filter. How has the vendor tested it?
Look closely at the chassis components; they need to contain a fire should it
occur. That is one of the nastier tests. Choose components with a minimum of
fuel for the fire. The method of assembling the components will determine a
lot of the vibration and EMI performance.
Ted Eckert
The opinions expressed are my own and do not necessarily reflect those of my
employer.
--- On Mon, 8/11/08, Christine Rodham <chrisrod...@yahoo.com> wrote:
From: Christine Rodham <chrisrod...@yahoo.com>
Subject: NEBS Compliant Components
To: emc-p...@ieee.org
Date: Monday, August 11, 2008, 12:07 PM
Hi List Members,
We are modifying an existing Networking Security product so it may
reside in
a NEBS environment. Does anyone know of a list of HW ( see below) that you can
purchase off the shelf that is already NEBS compliant. ( Most of our HW is
>from off the shelf components)
I know there is no guarantee the final product will meet NEBS by using
NEBS
components but we thought it would be a good idea to pick NEBS certified
components from the start. For example we already found an air filter that is
marked NEBS compliant. ( Universal Air Filter )
If anyone is interested I will compile a list of the NEBS certified
components and send it out to the List Members.
Mother-Boards
Power Supplies
HDD/RAID
CPU / Memory
Chassis
Thank you!
Christine Rodham
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