... T,DMB-T etc..it is modular structure, each independent module can splitter SDI signal into 4 sets ... stipulated in G.804/G.752(DS3)One independent module support 1 channel DS3 input, 4 sets ... ASI signal with 8 channel ASI splitting, each set ASI output include main and standby output ... during the transmission, it will not change the each channel TS’s informationThe original signal can been backed ...