Shenzhen E-tech Electronic Technology Co., Ltd.
Contact: Mr. Tan
Address:Tongle Village, Longgang District, Shenzhen
Crystal head manufacturers tell you the use of non shielded cable shield crystal head
Non-shielded cable is the unshielded jacket, small diameter, saving the space occupied, lightweight, flexible and easy to install.
Non-shielded cable is used in the absence of strong electromagnetic interference environment, the performance did not resist strong electromagnetic interference.
The cable itself is twisted by two insulated copper wires with each other according to certain specifications intertwined with each other from the network transmission medium.
If the size of the external electromagnetic interference signals on the two wires produce equal and opposite in phase, then the interference signal will cancel each other out.
However, non-shielded cable network transmission requirements, to prevent wiring environment information to be tapped and the strong electromagnetic interference is not used.
Non-shielded cable also can not be used with shielded crystal head, crystal head shield, even if there is electromagnetic interference shielding effect, but non-shielded cable is used with no effect.
Shielded cabling requirements of the environment is the entire system is shielded all the devices, including cables, sockets, crystal head and patch panels, etc., while the building needs a good ground system.
The same shielded cable also can not use non-shielded crystal head, if there is no interference from both ends of the shield into the place, and the incident angle is an angle within a certain range, it will not get out in the shielded cable in order to multiple reflections forming a more serious interference than ordinary wire.