What is a node type optical transceiver? The node type optical transceiver is also called the bus type optical transceiver, and its accurate definition is an image transmission system in the form of single/dual fiber link type networking, which is also called a link type optical transceiver.
Node type optical transceiver
The node type optical transceiver adopts Time Division Multiplexing (TDM) technology, and can transmit up to 16 channels of video simultaneously on one core fiber through the electrical add/drop multiplexing (ADM). The number of supported nodes can reach 16 and each node can access. Video, audio, telephone, control data and other services, the transmission distance between each two nodes can reach 80km, the number of nodes does not affect the image quality.
Node type optical transceiver features
The technology adopted by the node type optical transceiver is the time division multiplexing technology (TDM) and the add/drop multiplexing technology (ADM) commonly used in telecommunications, which has the advantages of saving fiber resources and extending the transmission distance. Since link optical transceivers using ADM technology are greatly limited in transmission capacity, TDM is generally used in combination with ADM. In the absence of surplus fiber resources, TDM technology is more used, so that optical communication systems of different service platforms can be completely transmitted on a physically isolated one-core fiber.
Node type optical transceiver node
At least 10 video signals can be simultaneously transmitted on one core fiber, and the number of supported nodes is up to 16, and the node type optical transceiver remote device can access one to multiple video signals. Each node can support one independent bidirectional data/two-way audio/Ethernet, and each node also supports one common bus RS-485 data. The remote device can be equipped with an optical link protection disk (that is, light). Switch), can automatically isolate the faulty node to ensure other node machines work properly.
The 10-node cascading optical transceiver adopts 1.25G optical transmission platform, which can simultaneously transmit 10 video signals on one core fiber, and supports up to 10 nodes. The node-type optical transceiver remote device can access 1~4 video signals. 1, 1 channel of two-way audio, 1 channel of bidirectional data, 1 channel of common 485 data, the central office equipment can output 10 channels of video, 10 channels of audio, 10 channels of data, 1 channel of public 485 data.
Node optical transceivers are used in highway video surveillance, intelligent traffic monitoring, social security and other monitoring systems, and are an important component of the monitoring system.
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