... modulating form 16-256 QAM CATV QAM modulator/catv digital modulatorModel no.:RNO3003 QAM ModulatorRNO3003 QAM Modulator is the ... main equipment CATV digital head-end, receiving DVB transport streams which come from ... coder, multiplier, DVB gateway, scrambler, video server etc. It does signal processing like RS coding, convolution ...