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在确认是否满足干扰限值时,通常要考虑测量仪器不确定度(MIU)。SCU的一个重要量值来源是辐射干扰测试布置边界之外的线缆连接。为了尽量降低线缆连接对SCU的影响,2014年,CISPR 16-2-3第3版的A2修正版给出了新要求:测试布置之外的线缆连接需要使用铁氧体共模吸收装置(CMAD)。分析了使用和不使用CMAD的显著技术变化和测量结果差异。
In determining whether to meet the interference limit, usually consider the measurement instrument uncertainty (MIU). An important source of SCU is the cable connections outside the boundaries of the radiated interference test setup. In order to minimize the impact of cable connections on the SCU, the A2 revision of CISPR 16-2-3 Release 3 gives new requirements in 2014: Cable connections outside the test setup require the use of ferrite common mode absorber (CMAD). The significant technical changes and differences in measurement results with and without CMAD were analyzed.