What are the antenna distance requirements for edge computing box radiated immunity testing?

According to IEC 61000-4-3 radiated immunity testing, the antenna distance should be 3m, with a uniform field size of 1.5m × 1.5m. The edge box, as the device under test, should be completely located within the uniform field and face the antenna. If the substitution method is used, the distance can also be 1m, but the field strength must be calculated according to the inverse square ratio. Test setup requirements: non-conductive table height 0.8m, grounded plate. During testing, the output amplitude of the RF signal generator should ensure that the field strength in front of the antenna reaches 3V/m, 10V/m, etc. The modulation index should be 80% AM 1kHz. The edge box should have standard cable layout to simulate actual usage scenarios. To pass the test, a common-mode inductor CML3225A-510T and a ferrite bead PBZ1608E600Z0T can be added to the PCB interface in advance to enhance immunity.