... 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 ... °C(Storage)Power220VAC±10%,50Hz,25W DH-803 CATV digital head-end QAM Modulator