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 MUDS Transmitting equipment is mainly composed by digital compression encoder, code stream multiplexer, digital modulator, high linearity transmitter, high isolation synthesizers and high-gain antenna. It is the best equipment for television networking of county and township and town and for extending of cable television. It can easily build a integrated services network platform of video, audio and data integration, achieves the goal of multimedia integrated information services.
Digital MMDS can get higher quality of program than analog microwave transmission; it is easy to reach fifth level of image quality. Coverage distance ranging from 80 to 100 KM, Large transmission capacity, it can send 60 to 100 sets of TV shows simultaneously. Because of the cheaper price, quicker returns than fiber transmission, itis particularly suitable for the popularizing and development of broadcast television enterprises in vast rural areas and those areas hard to lay cables.
The equipment also adapts to DVB-C, DVB-S, DVB-T (H), DMB-T, ADTB-T, and other international and domestic standard terrestrial digital microwave transmission and coverage systems.
equipment characteristics
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??Advanced MPEG-2 digital video and audio compression encoding
??High adaptive of TS code stream multiplexing, demultiplexing, transforming
??QAM digital modulation with high utilization rate of frequency spectrum
??Low phase noise and high stability of Local Oscillator
??High linear FET transistor amplifier
??High-power and high-isolation channel Synthesizer
??Monitoring system controlled by software
??accessible for CA system??digital disturb??authorized management
??Single-channel, multi-channel(optional)
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Main technical data
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transmission capacity |
up to 100 sets of TV programs |
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coverage rage |
30-60km |
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operating frequency |
470 MHz-860MHz |
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transmitting power |
0.5-20W |
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video frequency-amplitude characteristic |
0.5dB(5MHz) |
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differential gain |
-3?? |
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differential phase |
3 |
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weighted video signal to noise ratio |
56dB |
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weighted audio signal to noise ratio |
65dB |
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