JXDH-5301 QPSK to QAM modulator is a high performance equipment combining QPSK decoding with QAM modulation. It receives DVB transport stream from satellite receiver, encoder, multiplexer, DVB gateway, scrambler, video server etc and provide IF or RF output after RS encoding, convolution interweaving process and QAM modulation. This transformer is mainly used in digital cable TV head end system to transfer satellite signal into cable TV network, which further saving the amount of satellite decoder, digital multiplexer and providing an economical solution. It also can be used as a pure QAM modulator when receiving the DVB-ASI input stream.

Complying DVB standard signal channel coding.

Support full range variable data rate, bandwidth and QAM mode Data stuffing

super buffer (optional),anti-burst code stream

   PID filter, re-reflection, PSI\SI information synchronal updating possible.

   Automatically code stream stuffing and empty pocket deleting.

   Code stream real-time monitoring, empty pocket filtering

   Support NIT table modifying

   real-time code stream monitoring

   PCR adjusting, output symbol rate variable:1-7Ms/s;

   Fixed or agile channel output;

   Providing ASI and DS3 (optional) code stream interface.

   Providing RF output monitoring port(-20dB);

   Local or Remote administration possible.

   LCD display, flexible in operating

   High reliability design, stable in running

   Equipment combining QPSK decoding with QAM modulation