This can be used to calculate the approximate distance to the wiring fault and it can be helpful in locating a faulty connection point along a cable run, such as a wall jack.

• 这能用来计算线路缺陷的大约距离.；此大约距离可能对沿缆线跑的缺陷连接点的定位有帮助；例如墙壁上的插座