BNC EMI Suppression Ferrite—The BNC Cable Ferrite is an accessory that you can clamp on to external BNC cables to suppress electromagnetic interference (EMI). You can use the BNC Cable Ferrite to ensure specified electromagnetic compatibility (EMC) performance for DAQ modules. The BNC Cable Ferrite is available in different diameters including 5.1 mm, 7 mm, and 10.2 mm.