Are there alternate medical equipment EMC standards (i.e., 60601-x series) that 
would give you more leeway? 

Mike Sherman 
Graco Inc. 
Product Safety and Compliance Engineer 

----- Original Message -----

From: "Niels Hougaard" <[email protected]> 
To: "EMC-PSTC" <[email protected]> 
Sent: Tuesday, January 20, 2015 1:39:45 AM 
Subject: [PSES] ISM-use of a non-ISM frequency 



Dear list members, 



Product in question is an ISM equipment. Classified according to EN 
55011:2009/CISPR 11:2009 as class A, group 1 equipment. Using RF energy for a 
kind of skin treatment, with a probe at the end of a 1-1,5 m long cable. 



The EN 55011:2009/CISPR 11:2009 has increased radiation limits at the ISM 
frequencies, which are listed in table 1, but the product is using a frequency 
that is not in the table. 



Product is at stand by when the user is not pressing a button, emission being 
well under the limits. 

When the button is pressed, the frequency in use is about 5-15 dB above the 
limits (radiated/conducted). Also when all realistic means for reducing the 
emission have been introduced (including a good shielding of the cable, and 
reducing the power as much as possible). 

The button is pressed some seconds in periods. 



Using another frequency for the RF is unfortunately not possible. 



I think that asking a notified body and/or for a special permission/acceptance 
is a last chance for being able to CE-mark the product. 



Do you see others possibilities? Any experiance with such a permission, if at 
all possible? 



Regards, 

Niels 



Niels Hougaard 

Bolls ApS · Ved Gadekæret 11F, Slagslunde · DK-3660 Stenløse 
Tlf. +45 48 18 35 66 · Direkte +45 5379 6991 

[email protected] · www.bolls.dk 






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