
The conducted immunity (CS) test of the data center switch is conducted according to the IEC 61000-4-6 standard, with a frequency range of 0.15MHz-80MHz. Industrial environments require 10V (Level 3), and harsh environments require 10V (Level 3) unmodulated or 30V (Level X). The design target is 10V rms with a 6dB margin. The solution provided by Audiotech Electronics includes: a CMZ7060A-701T common-mode inductor (700Ω@100MHz) in series at the power port to block conducted interference; a PBZ1608A-102Z0T ferrite bead (1000Ω@100MHz) in series at the signal port; and shielded cables with 360° grounding. Actual measurements show that the residual voltage at the port is <1V under 10V conducted injection, and the throughput shows zero drop, meeting the IEC 61000-4-6 Class A rating.