Qam Modulator

QAM Modulator is one of the main equipment of cable digital TV front-end, receiving data from the encoder, multiplexer, DVB gateway, scrambler, video server and other equipmenta s DVB transport code stream, and make RS codes, convolution interleaving and QAM modulation channel processing, RF output. Use a new generation of integrated circuits BCM3034, low-power, high index.
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 synchronization update;
. Support NIT table inserts;
. Real-time code stream monitoring;
. PCR correction;
. Fixed or variable frequency output;
. Provide ASI and DS3 (Optional) Enter interface;
. Provide RF output monitoring port (-20dB);
. Local and remote control;
. LCD display in Chinese and English, easy and flexible to operate;
. High reliability design, stable operation.

Technical Specification:
Modulation Mode16,32,64,128,256,1024QAM
Symbol rate : 1~7Mbaud/s
Error-correcting codes : RScode188/204
Input data code rate : 1.5~51Mbps
Channel Data Rate : 20~56Mbps
MER : >33dB
BER : 0
Input interfaceASI : DVB standard
RF Frequency : 47~870MHz (agility or fixed output)
Output LEV : >=115dBmV
Output LEV adjustable range : 0-16 dB(0.5 dB stepping)
Impedance : 75IC
Output Return Loss : >=12 dB