Dear Memebrs,
        I feel EN61000 - 4 - 2 is an over kill for assessing the ESD immunity 
level of a device. An USB device with a CCD type sensor is repeatedly failing 
in the lab testing conducted as per the standard and as per sensor 
manufacturer's recomendations. On the other hand the sensor manufacturer claims 
that millions of sensors are deployed in the field for more than a year and 
absolutely no field returns on ESD account. The lab results are not at all 
matching with field results calimed by the sensor manufacturer. As a product 
certification engineer, I am confused whether to give the go ahead to my 
company for the mass production. 
       I look for the members advise 
a. Do you see a reasonable match between the EN 61000 - 4 - 2 lab test results 
and field results.
b. Is there any other standard that you feel better than EN 61000 - 4 - 2.
 
Wishing you all a Happy Christmas & Prosperous New Year 2008
 
Bharath

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