Rl
回波损耗RETURN LOSS 回波损耗是电缆链路由于阻抗不匹配所产生的反射是一对线自身的反射不匹配主要发生在连接器的地方但也可能发生于电缆中特性阻抗发生变化的地方所以施工的质量是减少回波损耗的关键回波损耗将引入信号的波动返回的信号将被双工的千兆网误认为是收到的信号而产生混乱
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