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如何测量一根电话线的通断
更新时间: 2020-07-01 00:00:00  

测量一根电话线通断的步骤如下:

1、将电话线一端连在一起,两根电线就成为一根。

2、然后在另一端用万用表电阻挡测量。

3、把万用表打到二极管测量位置,两个表笔接触会有蜂鸣,说明表正常,然后用表笔分别接触电源线的两端,有蜂鸣说明完好,不蜂鸣说明断路。

关键词: 如何 测量 电话线

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