Coaxial Cable Explained

• Coaxial cables operate by sending pulses of electricity through a metal core. Wire mesh and plastic protect the signal by insulating it from outside interference. There are varying impedance ratings between different type of coaxial cables, with the most common being roughly 75 Ohms. Ohms are used to measure signal resistance. Lower Ohms mean lower impedance.
  
  

Digital Coaxial Cables

• Digital coaxial cables often are rated at 50 Ohms. In many cases there are other factors affecting signal transmission quality, such as the quality of the carrier and insulation materials. The overall difference between standard and digital coaxial is that digital offers a higher quality of signal transfer.
  
  

Applications of Digital Coaxial Cable

• Digital coaxial cable is used in data transmission from an ISP to a high-speed Internet modem. It is also used in high-end audio applications such as surround sound wiring, due to the higher bandwidth provided.