What level of conduction immunity (CS) requirements must an edge computing box meet?

Edge computing boxes used in industrial environments must comply with the IEC 61000-4-6 conducted immunity standard. Test frequencies range from 0.15-80MHz, with interference voltage levels divided into 1-3. Industrial applications typically require a level 3 test level of 10V 80% AM modulation. For power and severe industrial scenarios, 10Vrms is required. Both power and signal ports of the edge box must be protected. The design utilizes a common-mode inductor from Audiotech, CML4532A-101T (named CML common-mode inductor 4532, size 4.5×3.2mm, 101T, 100μH inductance). Connected in series at the power input, it presents high impedance to interference above 1MHz. Simultaneously, a TVS array (ESDLC3V3D3B) is connected in parallel to ground at the interface. This device has an ESD low capacitance of 3V3 and a turn-off voltage of 3.3V. The D3B is packaged in an SOD323 package with a bidirectional junction capacitance of 3pF, providing clamping for high-frequency interference. A 1000pF Y capacitor is connected across the port to ground, providing a low-impedance path for interference. Through this protection, the edge box passes through the 10V... The CS test showed no communication interruptions or bit errors.