GQ-3692 ASI+QPSK 2 channel re-multiplexing QAM modulator is a headend equipment with the professional broadcasting quali
GQ-3692 ASI+QPSK 2 channel re-multiplexing QAM modulator is a headend equipment with the professional broadcasting quality according to DVB standard . Its main function is to directly convert signals which could be QPSK modulated from satellite or other program source to TS stream and remultiplex with ASI signal locally and then transmit via HFC or MMDS networks after QAM modulation. It neednt decompress, compress, QAM modulate, but directly modulate data stream demodulated to QAM signal sending to HFC or MMDS network. Therefore, it carries out SDTV/HDTV services and so on, providing many digital TV programs and data broadcasting programs with low-cost in SMATV. It is used widely in various digital brodadband systems such as digital TV, data broadcast, VOD, Internet and video conference etc.
Features
input interface ASI and digital satellite
ASI and QPSK loop output interface
ASI interface input data rate(per channel): 216Mbps(max)
Remultiplex 2 channels TS
PID filtering and reset, users add and delete programs at will, auto-mapping PID of program selected. Support user-defined PID and input bypass.
Support ITU-T J.83A and B
FEC up to DVB-C
Work at mode 16QAM32QAM64QAM128QAM256QAM
Input RFQPSK frequency950MHz-2150MHz
Input RF BW6MHz7MHz8MHz
Input data(ASI interface) bit rate:1.551.6Mbps
Output data bit rate:256Mbps
Output signals BW1.158.05MHz(the Fall is 0.15)
Output data symbol ratio17Mbaud/s
Output RF frequency48-860MHz
Output level100dBuV115dBuV(stepping available)
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
Outstanding self-adapting filtering circuit designs to maximal reliability and availability.
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
Error alarming
LCD display
Network interface introduces remote maintenance, supervision and software upgrade
Power off memory