Lisa,
The 10 ohms per square seems high to be critically connected with EMC
directly..(maybe ESD ONLY???). I would have to say that the move to 20 ohms
won't have much of an effect....
Now, the retest debate is interesting... If you have a TCF, I would
recommend submitting your changes to the outfit holding your TCF, and letting
them determine the extent of testing.... If not, (not knowing much about your
product), I would have to say you would have to seriously consider retesting a
whole spectrum of tests. Furthermore, if you only tested to old versions of
standards, other tests may have to be done anyways....
Hope this helps,
Regards,
Bob Tims
Compliance Engineer
Ericsson Messaging Systems Inc.
