Product Description

Outline YDN-QA***2 is a headend equipment with the professional broadcasting quality according to DVB standard . The main function is to directly convert signals which could be QPSK modulated from satellite or other program source to TS stream,and re-multiplex with ASI signal locally.Then transmit via HFC or MMDS networks after QAM modulation. It needn’t decompress, compress, QAM modulate, but directly modulate data stream demodulated to QAM signal sending to HFC or MMDS network. Therefore, it realizes SDTV/HDTV services,providing many digital TV programs and data broadcasting programs with low-cost in SMATV. It is widely used in various digital brodadband systems such as digital TV, data broadcast, VOD, Internet and video conference etc.   Features ◆  interface:ASI and digital satellite ◆ ASI and QPSK loop output interface ◆ Re-multiplex 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 bypass. ◆ Support ITU-T J.*3A and B ◆ FEC up to DVB-C ◆ **8 and **4 packet auto-identify, displaying data format real time. ◆ Large cache, ASI interface support burst and average bit stream, reforming bit stream average in order to promote the output bit stream efficiency. ◆ NIT mapping and sending, support *4 NIT mapping ◆ *0 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 data, respectively and accurately ◆ Show and inspect system bit rate and valid bit rate real-time ◆ **0dB RF testing interface with IF output ◆ Error alarming ◆ LCD display ◆ Network interface introduces remote maintenance, supervision and software upgrade ◆ Power off memory