DH-803 CATV digital head-end QAM Modulator 1.Complying DVB standard signal channel coding 2.PCR adjusting, output symbol rate DH-803 CATV digital head-end QAM Modulator Description DH-803 QAM Modulator, is the main equipment CATV digital head-end, receiving DVB transport streams which come from coder, multiplexer, DVB gateway, scrambler, video server etc. It does signal processing like RS coding, ...