hi there
welcome to the forums
I have moved your thread to its own place
its a good idea to always start your own thread so as not to cause confusion in some one else's thread
Your EMI Suppression Filter, since you haven't told us anything about it, it's a little difficult to offer any advice
show us a pic of it, maybe a link to info on it would be great !
why are you testing it, do you think it has become faulty ?
cheers
Dave