Re: EMC stds

2002-02-05 Thread John Woodgate

I read in !emc-pstc that Brian O'Connell boconn...@t-yuden.com wrote
(in f7e9180f6f7f5840858d3db815e4f7ad1f2...@cms21.t-yuden.com) about
'EMC stds', on Tue, 5 Feb 2002:
Current D of C for a component SMPS lists basic stds (e.g., 61000-4-x), but
customer wants product family stds listed.

Based on my limited understanding of ITE EMC stds (55022/4), it would seem
that only referenced basic stds can be listed; and that the product family
std can only apply to the end-use item.

Correct? Comments appreciated.

Partly correct, I think. There will be a product-family EMC standard for
stand-alone SMPS at some date, but it is not published yet AFAIK. But
Basic Standards must NOT be cited in a DOC; they are not 'notified' in
the OJ and a product cannot be said to conform to them. They only
specify methods of measurement. Tables of proposed limits in such
standards must be regarded as **advice to product standards committees**
only, not limits applicable by manufacturers, test houses or regulatory
authorities.

You can, of course, cite the Generic Standards. Maybe that will suffice.
-- 
Regards, John Woodgate, OOO - Own Opinions Only. http://www.jmwa.demon.co.uk 
After swimming across the Hellespont, I felt like a Hero.
PLEASE do NOT copy news posts to me by E-MAIL!

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RE: EMC stds

2002-02-05 Thread richwoods

Basic standards do not provide the presumption of compliance with the
essential requirements. Only generic, family or product standards can do
that. If you component is legally subject to a directive, then you must
apply the appropriate generic, family or product standard or use the
Tecnical Construction File route. The standards that you apply will depend,
as you say, upon the end applications that you envision for your component.
You may have to use several family standards. If your component is not
legally subject to a directive, you only have to do what is necessary to
keep your customers happy.

Richard Woods
Sensormatic Electronics
Tyco International


-Original Message-
From: Brian O'Connell [mailto:boconn...@t-yuden.com]
Sent: Tuesday, February 05, 2002 10:15 AM
To: emc-p...@majordomo.ieee.org
Subject: EMC stds



Good People of EMC-PSTC:

Current D of C for a component SMPS lists basic stds (e.g., 61000-4-x), but
customer wants product family stds listed.

Based on my limited understanding of ITE EMC stds (55022/4), it would seem
that only referenced basic stds can be listed; and that the product family
std can only apply to the end-use item.

Correct? Comments appreciated.

R/S,
Brian


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EMC stds

2002-02-05 Thread Brian O'Connell

Good People of EMC-PSTC:

Current D of C for a component SMPS lists basic stds (e.g., 61000-4-x), but
customer wants product family stds listed.

Based on my limited understanding of ITE EMC stds (55022/4), it would seem
that only referenced basic stds can be listed; and that the product family
std can only apply to the end-use item.

Correct? Comments appreciated.

R/S,
Brian


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Re: German Army EMC Stds..

1996-12-19 Thread Doug McKean
grasso%stkww...@ccsvm.stortek.com wrote:
 We have a bid on sales to the German Army. However, they (the German Army)
 want to know if we meet low emissions to avoid data pick up.
 Does any one have any info on this?
 TIA
 Chaz

You will have to find out what the German equivalent  
to TEMPEST testing, or have the equipment tested in 
a TEMPEST lab if theat is acceptable to them. 

Unless you have TEMPEST qualified people at your site, 
specifically a TEMPEST engineer, I wish you luck. 

I am not qualified in TEMPEST.  Let that be clear right 
now.  Data pick up, the ability to gather intelligence 
from the emissions of a device is primarily the concern 
of TEMPEST and entirely different than any EMI/EMC 
experience you may have. 

Perhaps a TEMPEST qualified person out there would 
care to comment if allowed?  

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