catv digital QAM modulator 1.use in catv digital headend DVB-C 2.one Asi input, one RF output 3 modulating ... main equipment CATV digital head-end, receiving DVB transport streams which come from coder, multiplier, DVB gateway, scrambler, video server etc. It does ... output.Features1.Complying with EN300 429/ITU-T J.83A (DVB-C), GB/T170 standard2.Support 16QAM, 32QAM, 64QAM, 128QAM and ...