There are two kinds of network inaccessible faults in general network hard disk video recorders:

First, the original monitoring system is normal, and then the network unreachable fault occurs;

Second, the network unreachable fault is encountered during the initial installation, monitoring and commissioning;

First of all, we should understand that the reason for the inaccessibility of the network is not necessarily the problem of the network. The simplest network monitoring engineering system consists of front-end camera, transmission line and back-end hard disk video recorder. The problem in each part may lead to the inaccessibility of the network camera.

Cause analysis and solution of the first case:

When the original monitoring engineering system was in normal use, there was suddenly no image in the middle, and the display network was unreachable, it should not be a configuration problem. Find out the problem from the hardware.

resolvent:

① Check the power supply of the monitoring camera. The power supply of the normal monitoring project is easier to break than other equipment. If the monitoring power supply is not normally powered, it will also show that the network is unreachable;

② Check the crystal head of the network cable, and use the tester to check whether the crystal head is intact. If the crystal head is loose, resulting in the inaccessibility of the network, then use the network cable pliers to make a crystal head again.

Cause analysis and solution of the second situation:

During the initial installation and debugging, the network is unreachable. This problem may be more complex, because in addition to the failure of hardware physical connection, it may also be the conflict or error of network IP address configuration.

First of all, check the physical connection, that is, the network cable and crystal head are well connected, and the initial configuration of the background of the video recorder is normal (now many video recorders need to be activated before entering the background, and the network cannot be used without activating the network).