Detailed Product Description

GQ-3730  COFDM  Modulator is a headend equipment with the professional broadcasting quality according to DVB standard . Its main function is to modulate by COFDM TS stream and then transmit 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.

Fetures:

•           Up to EN300744, support 6MHz/7MHz/8MHz band width
•           FEC up to DVB-T Work in mode QPSK16QAM64QAM
•           Support working mode of 2K/8K carrier
•           Support 1/22/33/45/6 and 7/8 FEC encoding
•           Support protect- alteration -time 1/41/81/161/32
•           Input interfaceASI and SPIE3/DS3 optional, loop output interface Corresponding to these.
•           Output data bit rate: 1.531.67Mbps
•           Output signal BW6/7/8MHz
•           RF range48860MHz
•           Output level100dBuV115dBuV(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