Digital cable tv modulator

SC-4174 QAM modulator&scrambler is one of the main equipment of cable digital TV head-end, it receive data from the encoder, multiplexer, DVB gateway, Satellite receiver, video server and other device, and make RS codes, convolution interleaving and QAM modulation, With built-in 4 channel scrambler, it support to co-work with 4 different CAS, and it also support multiplexing the input TS stream to 4 channel output, support programs sorting,programs name editing, and it also support PSI/SI editing. After multiplexing and scrambling,it output 4 channel RF signal. SC-4174 adopt a new integrated circuits ADV9789 with low power consumption, high performance and good signal quality.

Features

. Meet DVB standard channel coding;

. Support full range of variable Symbol Rate and QAM mode;

. 8M cache, anti-burst stream;

. Data filling function;

. Support IP data injection;

. Configurable PID filter, re-mapping, PSI, SI information update;

. Support NIT table inserts;

. Real-time transport stream monitoring;

. PCR correction;

. Fixed or variable frequency output;

. Provide RF output monitoring port (-20dB);

. Local and remote control;

. LCD display;

. High reliability design, stable operation.

. Support Annex-A (Europe).

Technical Specification: