CISPR 14-1 Ed 7.0,在术语定义、限值应用和测试方法等方面较现行国标有显著的变化.本文以典型的USB产品为例,分析了其具备的不同类型端口和运行模式,并据此进一步论述了其不同骚扰类型不同频段的限值应用和运行条件,结合实际案例进行了详细应用解析.最后分享了USB产品在测试时使用典型源的理解,为标准的使用者提供相关应用参考.
CISPR 14-1Ed7.0 Understanding of Limit Application and Testing Methods for Typical USB Products
CISPR 14-1 Ed 7.0 has significant changes compared to the current national standard in terms of definition,application of limits and testing methods.This paper analyzes the different types of ports and operating modes of typical USB products.Based on this,it further discusses the application of limits and operating conditions in different frequency range combined with actual cases.Finally,the understanding of using typical sources during testing was shared,providing relevant application references for standard users.
USB productsapplication of limitsoperating conditionsrepresentative source
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