DVB-T COFDM modulator

HT107-1 DVB-T COFDM Modulator is a head-end equipment with the professional broadcasting quality according to DVB standard. Its main function is to modulate TS stream by COFDM and then transmit the stream via HFC or MMDS. The modulator converts input data streams up to DVB-T standard into Radio Frequency (RF) signals. It supports FEC and RS encoding, EN300744 and 6/7/8 band width. The signal subject to DVB standard includes MPEG-2 digital TV, digital broadcast, VOD, and other digital signals such as video conference, Internet and IP phone, which are up to DVB contribution protocol. GQ-3730 QAM Modulator is used in broad band digital application system such as HFC network, MMDS or 8GHz microwave-systems. It not only transmits digital signals effectively, but also sends other digital value-added applications to thousands of families. GQ-3730 has the function of remote supervision and control.

Up to EN300744, support 6MHz/7MHz/8MHz band width

FEC up to DVB-T Work in mode QPSK, 16QAM, 64QAM

Support working mode of 2K/8K carrier

Support 1/2, 2/3, 3/4, 5/6 and 7/8 FEC encoding

Support protect- alteration -time 1/4,1/8,1/16,1/32

Input interface ASI and SPIE3/DS3 optional, loop output interface Corresponding to these.

Output data bit rate: 1.53-1.67Mbps

Output signal BW6/7/8MHz

RF range: 48-860MHz

Output level: 100dBuV-115dBuV (stepping)         

188 and 204 packet auto-identify, displaying input data format real time.         

Large cache, ASI interface support input burst and average bit stream, reforming bit stream average in order to promote the output bit stream efficiency.

NIT mapping and sending, support 44 NIT mapping

10 groups PID filtering and re-mapping

Various PSI/SI information tables pick-up, parse and modification (customization available).

SI information replacement and insertion

Input data null packet filtering and output data stuffing

PCR correction function can correct various input data, respectively and accurately

Show and inspect system input bit rate and valid bit rate real-time

-20dB RF testing interface with IF output

Outstanding self-adapting filtering circuit designs to maximal reliability and availability.

Error alarming

LCD display

Network interface introduces remote maintenance, supervision and software upgrade

Power off memory

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