What should I do if the surveillance camera displays a blurred screen?
What should I do if the surveillance camera displays a blurred screen? The monitor screen appears blurred screen, which is usually caused by data packet loss in the line, resulting in incomplete video data received by the video recorder. How to troubleshoot this situation? Let's briefly introduce it to you.
If the monitoring screen is blurred, you can ping the command to test the packet loss delay between the VCR and the camera. If the monitoring image has the phenomenon of blurred screen, mosaic, smear, and stuck, first you can use the network detection function in the NVR main menu of the video host. Input the IP address of the camera to test whether there is packet loss or delay in the network, and judge the network quality between the recording NVR and each camera by the packet loss rate and delay.
Generally, it is normal if the delay is 1~2ms. If the test ping value exceeds this value, there may be a fault in the network circuit. If all the monitoring images are blurred, that is, every camera has a delay, then there may be a problem with the backbone network, such as the video recorder to the host Switch There is a fault between. It is necessary to check the negotiation rate of the NVR network interface of the video recorder, the network cable connection between the NVR and the core switch, and the quality of the crystal head.
If some monitoring images are blurred and the packet loss rate is high, the problem may be between the access switch and the convergence switch, and the transmission bandwidth of the interface on the switch is insufficient, resulting in abnormal images. For example, there are many cameras connected, and the converged switch uses 100M ports to connect.
There is also the problem of network cables. The problem of direct connection of network cables is easy to be ignored, especially the network cable quality of the backbone network. If the quality of the backbone network cable is poor, the communication between the NVR and all cameras will be affected for the core line connecting the NVR and the switch.
