Hello F&S support team,
unfortunately we observed EMC issues with our designated setup because we're using metal-based bolts to combine the several components of our device. We assume (and hope) this is due to one of the small but crucial differences between the NetDCU8 and the NetDCU14 because the NetDCU8 didn't expose the ground layer around the mounting holes.
The solution we came up with is to enlarge the mounting holes (currently 3 mm) to 4-5 mm, place a plastic jacket around the bolt screw and plastic washer on both sides. This would separate the ground of the NetDCU board from the case ground.
Is it safe to do so or would we cut into vital parts of the board layout ?
Regards,
Volker