Coaxial cable from the use of points can be divided into baseband coaxial cable and broadband coaxial cable (ie, network coaxial cable and video coaxial cable). Coaxial cable 50Ω baseband cable and 75Ω broadband cable two categories. The baseband cable is subdivided by coaxial cable and coaxial cable. Baseband cable is only used for digital transmission, data rate up to 10Mbps.
Coaxial cable (Coaxial Cable) refers to two concentric conductors, and the conductor and the shield and share the same axis of the cable. The most common coaxial cable consists of a copper conductor insulated from the insulating material, and on the outside of the inner layer is another layer of ring conductor and its insulator, and the entire cable is covered by a jacket of polyvinyl chloride or Teflon material