Hi Jim,

 

As stated in the standard the text shall be included in the instructions if
the device is class A equipment, you cannot omit the text.

 

I believe the same applies for USA. 

 

Best regards

 

Helge Knudsen

Denmark

 

From: emc-p...@ieee.org [mailto:emc-p...@ieee.org] On Behalf Of Jim Hulbert
Sent: 14. februar 2013 14:49
To: EMC-PSTC@LISTSERV.IEEE.ORG
Subject: RE: Class A or Class B on Declaration of Conformity

 

Thanks for the responses.  However, this also brings me to a follow-up
question.  EN55022 in clause 4.2 states that for Class A ITE a warning shall
be included in the instructions for use:  "Warning.  This is a class A
product.  In a domestic environment this product may cause radio
interference in which case the user may be required to take adequate
measures".  How binding is that requirement?

 

Jim Hulbert

 

From: emc-p...@ieee.org [mailto:emc-p...@ieee.org] On Behalf Of Bill Owsley
Sent: Wednesday, February 13, 2013 10:30 PM
To: oconne...@tamuracorp.com; EMC-PSTC@LISTSERV.IEEE.ORG
Subject: Re: Class A or Class B on Declaration of Conformity

 

A number of commercial products that I've worked on met the Class B limits
with margin.  But since they were commercial products, and were not marketed
to the "public", marketing stayed with the Class A compliance claims to
avoid any confusion for the customs, which meant a sizable margin to the A
limit!.
Was it more expensive to make those margins to the limits?  
Just a bit, a lot more care in the layout took care of it.  Generally two
more layers did it, along with a few layout tricks.
And being expensive commercial products with lots of $$ margin to start
with, no real concern.
And with those margins to the limit, go ahead and make some changes, they
probably won't affect the DOC.


  _____  


From: Brian Oconnell <oconne...@tamuracorp.com>
To: EMC-PSTC@LISTSERV.IEEE.ORG 
Sent: Wednesday, February 13, 2013 5:35 PM
Subject: RE: Class A or Class B on Declaration of Conformity


The problem with emissions limits is their use to determine scope and
applicability of other non-related directives and standards.

Which is basis for some EMC reports that only indicate the equipment meets
Class A limit, but the data demonstrates Class B performance.

"Dinosaur-like DNA found in chicken and turkey meals" ? Probably why all
unknown/exotic meats taste like chicken.

Brian

-----Original Message-----
From: emc-p...@ieee.org [mailto:emc-p...@ieee.org]On Behalf Of John
Woodgate
Sent: Wednesday, February 13, 2013 2:17 PM
To: EMC-PSTC@LISTSERV.IEEE.ORG
Subject: Re: Class A or Class B on Declaration of Conformity

Not on the DoC but in your EMC Assessment statement. It could hardly be
a requirement on the DoC because that would have to be specified in the
Directive.

Not all standards have 'Class A' and 'Class B', and those that do don't
all define them in the same way.
--
SHOCK HORROR! Dinosaur-like DNA found in chicken and turkey meals

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  _____  

 

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