KNOW YOUR NETWORK HFC

FOR COMMUNICATION DATAHFC stands for Hybrid Fiber Coax. Basically HFC is a device used for telecommunication networks and is a combination of fiber optic technology, optoelectronic and traditional coaxial cable technology that is a technology "hybrid". Today the use of HFCs in the telecommunications network gets the most attention because it theoretically allows the delivery of various services at once (multiservice), such as telephony, internet, cable TV and Video-On-Demand (VOD) with the promise of data transmission speed is higher and prices affordable by the user. HFC network can be implemented through the use of cable TV network that has been widely as in the United States or by building new infrastructure, cable TV with HFC technology 

     

In the race to satisfy customer (consumer) will be the Internet service is faster and cheaper, a factor that plays an important role is the bandwidth (bandwidth). In comparison, the telephone cable network has low bandwidth, so having a low-speed cable TV network while providing a very wide bandwidth that offers a higher speed. By leveraging the advantages of this TV cable network, Internet users can get connection speeds 500-1000 times faster than regular dial-up modem and 100-200 times faster than ISDN connections that exist today. The files that usually takes several minutes for download can be done in a much shorter time. This shows great potential for the provision of network-owned multimedia services in real time. In the United States of CATV network (an abbreviation commonly used for cable TV) are spread in more than 60 million homes.
     With all these advantages some of the obstacles faced in implementation of the CATV network as a multiservice CATV providers are mostly using the full system of coaxial cable with the following weaknesses: • Susceptible to a variety of disorders such as radio station AM / FM, CB radio, etc.. • Age and temperature changes continuously (temperature fluxes) causes cracks in the trunk so that the cable
   insulation turned into a giant antenna. • All of the above noise can be pick up by the amplifier and propagate to the nodes on the network. • If the CATV network in a particular area to serve many customers / home then in the area will arise a strong electromagnetic field that can affect electronic devices on aircraft through the area.
To menangulangi the problems mentioned above is used in the fiber optic trunk network as much as 5% of ingress emerged from the trunk. Desired ideal situation is to use fiber to the curb or neighborhood hub and then use coaxial cable to the customer's point of limiting the ingress and localize