Ecvv Trade
Chengdu Sochuang Electronics Co., Ltd.

China Manufacturer with main products: Multiplexer, Encoder, Ird, Modulator, Scrambler, Ts Player, Satellite Receiver, Digital Headend

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QPSK modulator

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SC-4102 QPSK modulator is one of the main equipment of cable digital TV headend,  receiving data from the encoder, multiplexer, DVB gateway, scrambler, video server and other equipment of the DVB transport stream, make RS coding, convolutional interleaving and QPSK modulation channel processing, and provide RF output.
. Comply with DVB standard channel coding;
. Support the full range of the variable symbol rate;
. 8M cache, anti-burst stream;
. Support IP data injection;
. Configurable PID filter, re-mapping, PSI, SI information synchronization update;
. Auto-filled streams filling and intelligent Null Packet removed;
. Support NIT table inserts;
. Real-time stream monitoring;
. PCR correction;
. Local and remote control;
. LCD display in Chinese and English, easy and flexible to operate;
. High reliability design, stable operation.
Technical Specification:
Modulation Mode
Symbol rate
Error-correcting codes
RS code188/204
Input bit rate
Channel Data Rate
Input interface
ASI (DVB standard)
RF Frequency
450~950MHz (or 950-2150)
Output LEV
Output LEV adjustable range
0-16 dB(0.5 dB stepping)
Output Return Loss
>=12 dB
General Features
0 ~ 45(Operating);-20 ~ 80(Storage)
Network Management:
QPSK Modulator parameter

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