According to statistics, about 50% - 70% of weak current engineering faults are related to cables. Therefore, the quality of the cable itself and the installation quality directly affect the normal operation of the network. There are many kinds of network cable faults, which can be divided into physical faults (also known as connection faults) and electrical performance faults.

1、 Physical failure

Physical faults mainly refer to the faults that can be directly observed due to subjective factors, mostly caused by construction technology or accidental damage to network cables, such as wrong line sequence of modules and connectors, open circuit, short circuit, over length of links, etc.

2、 Soft fault
It is mainly caused by the control software system, many of which are not easy to observe directly. Most of them are caused by the setting and planning of software parameters in system debugging.