DCH-2000AL is an 1+1 digital TV transport stream redundancy ASI switch with one primary port and one backup port .Up to 6 independent 1+1 switches are implemented in a 1RU chassis. In case of technical failure of the primary port, the ASI signal is automatically routed to the backup port. The switching condition is supervised by a comprehensive transport stream monitor that continuously analyzes the quality of incoming streams. It detects first the signal carrier then counts a number of consecutive sync bytes. Furthermore up to 8 PIDs in the coming TS can be set as switching condition. RF relay is used as switch that ensures rapid transition from primary port to secondary port with high performance and stability, DCH-2000AL is an ideal product for broadcast system redundancy. |