Description

JXDH****2 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, convolution interleaving and QAM modulating, providing IF/RF ***** DVB standard signal channel coding. Features: * 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:**7Ms/s; * Fixed or agile channel output; * Providing ASI and Ds3 input port and output port (optional) * Providing RF output monitoring port(**0dB); * Local or Remote administration possible. * LCD display, flexible in operating * High reliability design, stable in running JXDH****2(A) QPSK Modulator Outline QPSK digital TV modulator adopts advanced digital signal processing technology, of which receiving port can directly use digital satellite receiver for receiving, thus fully complying DVB-S standard. Not only can it gain relatively high frequency spectrum usage ratio, having very strong anti-interference and relatively high price performance ratio, but also it can well comply analogue FM microwave equipment. QPSK digital TV modulator adopts various processing method, such as random energy spread processing, RS coding, convolution interweave, contracting convolution coding, and pre-modulating baseband shaping processing, etc. all these contribute a high guarantee to the data transmitting performance. In a word, its a high performance QPSK modulator fortransmitting digital TV and other digital signal. *****