The difference between optical transceivers and video optical transceivers

17-12-2019

optical transceivers and video optical transceivers are not unfamiliar to many people, but often people will confuse the concepts of optical transceivers and video optical transceivers, thinking that both are one thing. Let's talk about the differences between optical transceivers and video optical transceivers.


  1. Optical fiber transceiver is mainly used in the network. One end is connected to the optical fiber and the other end is connected to the switch. It is mainly a network signal.


The optical transceiver can transmit video signals, 485 control signals, network signals, alarm signals, audio signals, switching values, etc. The optical transceivers for monitoring are generally: one end of the optical transmitter is connected to the camera, the other end is connected to the optical fiber, one end of the optical receiver is connected to the optical fiber, and the other end is connected to the display device


  2.first talk about the optical transceiver, there are two conventional optical transceivers.


  (1) Used by PDH optical transceivers to transmit data signals.


  (2) Video optical transceivers are used to transmit video surveillance signals. This optical transceiver needs to be divided into receivers (receivers and transmitters), that is, the main function of the video receiver is to convert optical signals into electrical signals (D / A) . The main function of the transmitter is the video transmitter, which converts electrical signals into optical signals (A / D).


The optical transceiver was used to transmit video signals. Then the optical fiber transceiver is used to transmit Ethernet signals. Although they are all photoelectric conversion, the protocols and principles of electrical signals are different, and the signals transmitted on the optical path are also different.

optical transceivers

  3. One end of the optical fiber transceiver is connected to the optical transmission system, and the other end (user end) is a 10 / 100M Ethernet interface. optical transceivers are used to achieve photoelectric signal conversion. The main principle of the optical fiber transceiver is that the optical fiber transceiver realized by photoelectric coupling usually has the following basic characteristics.


  (1) Provides ultra-low latency data transmission.


  (2) Fully transparent to network protocols.


  (3) Mostly use a dedicated ASIC chip to implement data line-speed forwarding. Programmable ASIC concentrates multiple functions on one chip. It has the advantages of simple design, high reliability, low power consumption, etc., which can make the device get higher performance and lower cost.


  (4) The equipment mostly adopts 1 + 1 power supply design, supports ultra-wide power supply voltage, and realizes power protection and automatic switching.


  (5) supports ultra-wide operating temperature range.


  (6) Support complete transmission distance (0 ~120km)


The above is the introduction of the differences between optical transceivers and video optical transceivers. I believe that you have already understood the difference between the two here. I hope to give you some help.

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