直流火花机常被用于成缆﹐有时在单个电极中测试25对的电缆。
DC spark testers are often used in cabling operations, sometimes testing 25 twisted pairs within a single electrode.
电缆故障的自动测试方法，其特征在于是将脉冲反射测试电路发射与接收的脉冲信号直接叠加到直流高压测量电路的输出端，直流高压测量电路的输出端与被测电缆端口连接。
The automatic testing method of cable fault is characterized by that the pulse signal transmitted and received by pulse reflection test circuit can be directly superposed on the output end of d.
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