... synchronous byte Introduction According to different type, SS100 ASI signal switcher has many functions, such as 2X2,manual, ... switching, PAT,PMT,SDT,CAT loss,channging or error switcher, signal losing switching, TS program broadcasting, it is coneneince ... for DTV head-endDistributing and amplifying DVB-ASI/SDI signal routingAutomatically backup redundantly DVB-ASI/SDI signal SS100 ASI Signal Switcher