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所谓信号注入法,就是利用信号发生器的信号注入到待修量仪中的有关电路中,观察终端指示器的反应,作为确定故障存在的部位的依据。信号注入的程序,一般都是从终端指示器件开始,依序向前移动。有一定经验以后,也可在故障范围的中段选择一点进行检查,判别故障发生在此点以前还是以后(称为对分法)。然后在肯定故障范围内再找一点进行检查。这种方法可加速诊断故障部位的进程。应该指出:终端指示正常,说明测试点以后的电路正常,否则说明测试点以后的电路有
The so-called signal injection method is to use the signal generator signal to be repaired instrument in the relevant circuit to observe the response of the terminal indicator as a basis for determining the existence of the fault location. Signal injection procedures, usually from the terminal indicating devices, in order to move forward. Have some experience, but also in the middle of the fault range to select a little check to determine whether the fault occurred before or after this point (known as the dichotomy). Then in the affirmative failure to find a little more to check. This method can speed up the process of diagnosing the fault site. It should be noted: the terminal indicates normal, indicating that the circuit after the test point is normal, otherwise the circuit after the test point