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Smart-2000 series of digital microwave transmission equipments developed by our company for broadcast  television backbone network's transformation that are microwave transmission systems of new television ,voice,data integrated services .They can cover a wide range of 0.8GHz ~ 13GHz frequency band, transmitting 8Mb (4E1), 34Mb (16E1) of the main signal and auxiliary data. Equipment, mainly composed by the microwave transreceiver, a modem, switch, Multiplexer/Demultiplexer, video codecs and network management system, function components using plug-in design, can better solve the asymmetrical transmission demand of television system It combines the flexibility of digital transmission of telecommunications and high efficiency of television transmission . System provides the E3 or E1 interfaces (conforming to ITU recommendations). Equipment placed in standard 19"cabinet (or 19"rack), elegant appearance. |
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application
??Television digital microwave backbone networking
??Telecom operators' various digital communication networks
??Digital communication network of water conservancy,electrical power,industrial and mining establishments,research institutions.
equipment characteristics:
?? Cost-effective.
?? Simultaneous transmission of television, radio,voice and data .
?? Using the latest integrated circuits and FPGA technology.
?? Multi-protection measures: channel 1 +1 or 2 +1 protection,frequency diversity, spatial diversity and mixed diversity.
?? Standard DS3/E1 interface,flexible service access.
?? Auxiliary data channel,all fast business, network monitoring.
?? Indoor design,compact structure, easy maintenance.
main technology data:
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item |
8Mbequipment |
34Mbequipment |
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operating frequency band(GHz) |
7 GHz or 8 GHz |
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transmission capacity |
8.448Mbps |
34.368 Mbps |
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channel spacing(MHz) |
7 MHz |
28 MHz |
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data interface |
4E1 |
E3/16E1 |
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transmitting power??dBm?? |
+30dBm(optional) |
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Modulating Mode |
QPSK |
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Intermediate frequency(MHz) |
70MHz |
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Noise coefficient(dB) |
4.5dB |
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AGC control range(dB) |
50dB |
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frequency stability |
20ppm |
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Threshold Level(dBm)
BER=10-3
BER=10-6 |
-85
-82 |
-80
-77 |
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Operating condition |
ambient temperature: 0drges - +45drges(guaranteedrange)
-5drges- +50drges (normal operating)
relative humidity:90%(+25drges,no condensate)
altitude:4000m |
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power source |
DC -24V or DC -48V | |
