在通信电缆、信号电缆或电力电缆的施工中,电缆芯线的对号是一项很重要的工作。在以往的芯线对号工作中,大多数使用蜂鸣器或振荡器。用这种方法对号,不仅需要一个体积很大、价钱很贵的音频振荡器,而且还有串音的缺点,很容易造成“错号”。经过无产阶级文化大革命和批林批孔运动,铁路电化工程局电化 In the construction of communication cables, signal cables or power cables, the alignment of the cable cores is a very important task. In the past core alignment work, most use buzzer or oscillator. Using this method of collation, not only requires a bulky, expensive audio oscillator, but also the shortcomings of crosstalk, it is easy to cause a “wrong number.” After the Great Proletarian Cultural Revolution and the campaign of criticizing Lin, Kong Electrification of Railway Electrification Engineering Bureau