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Introduction of node type optical termin

Time:2012-03-28   Views:1557 Times    Author:GTT

    

      Node type optical terminal is called bus type optical terminal, it’s more exact definition is adopt the image transmission system of single/double fiber networks forms, and also called link type optical terminal. The technology adopted is common technology of time division multiplexing (TDM) and add-drop multiplexing (ADM) has the advantage of saving fiber resources and extend the transmission distance. The link type optical terminal is limited in transmission capacity by adopting ADM technology, generally use TDM with ADM. In the case of no surplus optical fiber, the more is adopting TDM technology. This system has been widely used on the highway.

      Link type (node type) digital video optical terminal adopt uncompressed digital video transmission mode, it is the combination product of TDM and ADM technology. 10 nodes cascaded optical terminal adopt 1.25G optical transmission platform, it can transmit 10 routes video signal on single-core fiber, support nodes have at least 10, the cascaded optical terminal remote equipment can access 1-4 route video signal, local equipment can real-time output 10 routes video.

      Cascaded optical terminal adopt modularized design mode, support function expansion. Every single remote termination can support 2 routes RS485/422 shared data, and 2 routes independent channel point-to-point data/audio signal. In the meantime, every remote termination and local termination can transmit more routes of audio, data, switching value etc signal by increasing audio data extended disk.

      Cascaded optical terminal remote equipment can select matching optical link to protect the equipment, and it can isolate the failed node automatically, guarantee other node equipments work normally.

      Cascaded optical terminal can install network management plug-in; realize the network management function of remote termination and local termination.

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