Scrambler Modulator

Overview:

Scrambler part:

aims to DVB simulcrypt scrambling on input transport streams, embedded control generator, can send fixed or variable control word scrambling focus on transport stream; scrambling machine inside synchronous controller send control word and access conditions and exchange information with ECMG. Co-ordination with the CA systems, through the rational control of scrambling cycles (CP), scrambling machine aims to facilitate the proper decoder to decrypt control word, descrambling transport stream. Scrambling machine is a highly integrated device, which is mainly used in digital television scrambling.

Modulator(QAM) part:

RS codes, convolution interleaving and QAM modulation channel processing, RF output. Use a new generation of integrated circuits BCM3034, low-power, high index.

Features:

. 8 Mbytes caches, anti-burst stream;

. 63 sets of programs can be scrambled, each program supports 32 elements;

. 2 channel inputs, real-time hot backup;

. Support EPG data insertion;

. Commonly Used DVB Scrambling system description ETR289, Commonly used Scrambling System description;

. DVB scramble on specified program or basic transport stream;

. Meet the DVB Commonly Used Scrambling Algorithm, support simulcrypt model, compatible with multiple conditional access (CA) system;

. Provide a comprehensive analysis of MPEG stream function;

. Provide TS stream PSI / SI information re-processing functions;

. Provide input and output ASI transport stream channel protection;

. Provide input and output ASI ode stream channel protection;

. Support rate adaptive, PCR re-adjustment function and re-marking function;

. Support r remote real-time monitoring of transport streams;

. Support automatically switching on input backup function;

. Package format: automatically adapt to 188/204 package format;

. Through the network system for status monitoring;

. PCR correction;

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

. Data filling function;

. Support IP data injection;

. PID filter, PID re-mapping, PSI/SI edit;

. NIT table inserts;

. Remote/Local monitoring;

. Fixed or variable frequency output;

. Provide ASI and DS3 (Optional) interface;

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

. LCD display in English, easy and flexible to operate;

. High reliability design, stable operation.

Technical Specification:

Network Management:

P1: Modulator setting

P2:Scrambler setting

P3:NIT insert

P4:PID pass-through

P5:PID filter

P6:PSI/SI edit