For CAN (CAN – Controller Area Network) applications Teseq offers two different Coupling/Decoupling Networks for immunity tests according IEC/EN 61000-4-6. The CDN CAN-U4 and CDN CAN-U5 are special designed for unshielded cables. It was developed so that symmetrical signals can pass the CDN up to a transmission bandwidth of 30 MHz (sine) and nevertheless was reached a high decoupling from asymmetrical disturbances.