搜索 - 科创

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a/210KC901H停产后厂家公布了相关的技术资料（原理图/结构图），链接https://www.kechuang.org/m/100005/a/230KC901H的主要功能传输测试（幅频特性，调试双工器

第四节测试晶体滤波器测试晶体滤波器和测试双工器或其它常见无源器件的基本方法是一样的，不同之处在于，KC901A的特性阻抗是50欧姆，而晶体滤波器一般来说不是50欧姆。

如果双工器故障，内环自诊将发现故障但无法定位，而外环自诊可以绕过机内双工器，对故障进行定位。有关外环自诊的具体事项本文从略，在软件编写时再补充拟定。 [全文完 2014-02-20]

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