Development Of Cable TV Network Safe System

Although relational sections strengthen the manage of CATV network safety broadcast,the events of destroying CATV network happened often,especially the evil event of making use of CATV network to transmit the unlawful signal.all this brought wicked influence.and it has aroused the high regards of all levels broadcast and television sections.On the original CATV network base this system conludes two main additional parts,such as a main manip- ulative cell.a node manipulative cell in the all amplifier.all this forms a surveillant network. The main manipulative cell supervises the state of the node manipulative cells by means of time-sharing poll.The main manipulative cell transits the surveillant injunctions to the node manipulative cells in turn,the corresponding node manipulative cell feedbacks current state to the main manipulative cell,the main manipulative cell note,memories and analyze the work state of the manipulated node,sith it visually displays the state and warning information and decides the frondose position of the warning trouble dot,we can supervise the CATV network safely by all this.