The SKD211X is a high performance and cost-effective modulator. It encodes, multiplexes and modulates the two HD signals into 1 RF signal (DVB-C / DVB-T / ATSC/ QAM / DTMB factory set). The NMS port also can be used as the IP data input port to take in the camera IP signal with ONVIF protocol. The camera IP signals will be modulated into the RF channel as well.