PA-1904 RS485 HUB HUB


Release time:

2021-06-17

PA-1904 is a RS-485 bus split hub (HUB) designed to solve the requirements of large RS-485 systems in complex electromagnetic field environments. It provides star RS-485 bus connection. Users can easily improve the RS-485 bus structure, divide network segments, and improve communication reliability. The product supports a transmission rate of 115.2Kbps. In order to ensure the safety and reliability of data communication, the RS-485 interface terminal adopts photoelectric isolation technology to prevent lightning surge from being introduced into converters and equipment. The built-in photoelectric isolator and 600W surge protection circuit can provide an isolation voltage of 2500V V. When lightning strike or equipment failure occurs, the network segment with problems will be isolated, which can effectively suppress lightning (Lighting) and ESD, at the same time, it can effectively prevent lightning strikes and common ground interference to ensure the normal operation of other network segments. This performance greatly improves the reliability of the existing RS-485 network and effectively shortens the maintenance time of the network. The power supply adopts an external switching power supply, which is safe and reliable and can be applied to outdoor projects.

PA-1904 is a RS-485 bus split hub (HUB) designed to solve the requirements of large RS-485 systems in complex electromagnetic field environments. It provides star RS-485 bus connection. Users can easily improve the RS-485 bus structure, divide network segments, and improve communication reliability. The product supports a transmission rate of 115.2Kbps. In order to ensure the safety and reliability of data communication, the RS-485 interface terminal adopts photoelectric isolation technology to prevent lightning surge from being introduced into converters and equipment. The built-in photoelectric isolator and 600W surge protection circuit can provide an isolation voltage of 2500V V. When lightning strike or equipment failure occurs, the network segment with problems will be isolated, which can effectively suppress lightning (Lighting) and ESD, at the same time, it can effectively prevent lightning strikes and common ground interference to ensure the normal operation of other network segments. This performance greatly improves the reliability of the existing RS-485 network and effectively shortens the maintenance time of the network. The power supply adopts an external switching power supply, which is safe and reliable and can be applied to outdoor projects.

   

In the RS-485 working mode, the discriminating circuit can automatically sense the direction of data flow, and automatically switch to enable the control circuit to easily solve the problem of RS-485 transceiver conversion delay. RS-485 interface transmission distance is greater than 1200 meters, stable performance. Reasonable use of UT-5204 RS-485 HUB can help you design a highly reliable RS-485 system. Is a stable performance, price appropriate data interface conversion products.

         

Now the highway, outdoor power tower and unattended base station and other fields need to be applied to the video surveillance system. In the video surveillance system, RS485 hub is an indispensable communication transmission equipment, which can work for a long time without interruption, and has long communication distance, strong load capacity and stable transmission, which not only reduces the cost of manpower and material resources, but also improves work efficiency.

  

Selection table:

 

Code Input signal Code Output signal
1 RS485 A RS485
B RS485*2
C RS485*3
D RS485*4