GW-DH3308AT 8 in 1 ATSC modulator is Granwinning’s newly designed product supporting IP input. It has 8 multiplexing channels and 8 ATSC modulating channels, and supports maximum 256 IP input through the GE port. GW-DH3308AT has a powerful output capacity with 8 non-adjacent carriers (50MHz~960MHz) output through the RF output interface. The system of this device can be on line controlled and upgraded through network, which can be widely used in ATSC digital broadcasting network setup and the testing for ATSC set top box design.