电磁兼容测试项目传导conduction emission (9kHz-30MHz)功率辐射power clamp (30MHz-300MHz)磁场辐射magnetic emission(9kHz-30MHz)空间辐射radiated emission(30MHz-18GHz)断续传导干扰click谐波harmonics class a,EMC系统测试,b ,EMC系统测试解决方案,c,EMC系统