The CE marking requirements for prof. Audio
Are described in the standards EN 55103 - 1/2 :1196

This standard distinct up to 6 different environments
Instead of just Class A or B.

In addition to "standard"  emission and immunity tests
It also requires emission and immunity tests for low frequency
(up to 5(50) Khz) magnetic (close) field and in some
cases common mode fed audio frequencies of substantial level.

These standards are rather compact and not big, and
can be obtained for less then 100 dollars each.

Test methods not in EN 61000-4-xx series are fully documented.

Gert Gremmen

ce-test, qualified testing



From: [email protected]
[mailto:[email protected]] On Behalf Of [email protected]
Sent: dinsdag 1 juli 2003 21:04
To: [email protected]


Hello All:

Sorry to ask what will be an obvious question to some of you, but what 
standards apply for CE marking of professional audio equipment?  I'm a
telecom guy, 
but I have been asked about professional audio equipment and do not know the

answers. 

The product in question is a digital reverb processor that is typically used

in a professional recording studio.  For those who have been following the 
recent LVD discussion on the list, I should note that this product is
basically a 
SELV device that uses a CE marked "wall wart" power supply.  The wall supply

is connected to the SELV unit with a hardwired cable.

I am interested to know what safety standard applies to this product, and 
whether additional testing is required beyond the existing power supply
approval. 
 I am also interested in what EMC requirements apply, and whether the 
emissions classification would class A or class B.

Any insight would me appreciated.


Joe Randolph
Telecom Design Consultant
Randolph Telecom, Inc.
781-721-2848
[email protected]
http://www.randolph-telecom.com



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