The testing principle

The testing principle is as follows: the flash tester uses pulse reflection method, the path tester uses electromagnetic wave testing minimum point method, and the fixer uses acoustic measurement method to fix the point. In addition, most manufacturers use acoustic magnetic synchronization for their fixed-point instruments, which can be used for fault acoustic testing and as a path signal receiver for cable path testing. For example, the DTC series cable fault tester, which is equipped with a fixed-point instrument that uses acoustic magnetic synchronization method, can use acoustic measurement method to locate the fault. When the fault is located, it is extremely convenient to use both the meter head and earphones to receive the display at the same time. It can also be used as a path signal receiver, which can receive path signals from the signal source of the path analyzer, as well as high-voltage pulse electromagnetic wave signals at cable fault points. It is truly a multi-purpose device.