How to connect PoE switch and IP camera?

Today, JHA Tech will introduce the application methods of POE switchs in specific projects and our response strategies for using POE-powered switch in different scenarios.

Device terminals that support POE include wireless APs, network cameras, etc. The connection between the terminal and the switch is made of network cables. We will divide the connection into 4 types based on whether the terminal box and switch support POE.

First, the switch and the terminal both support POE.

Second, the switch supports POE, but the terminal does not support POE.

Third, the switch does not support POE, but the terminal does support POE.

Fourth, neither the switch nor the terminal supports POE.

The first case of simultaneous support is very simple. The PoE switch is directly connected to the wireless AP or network camera that supports POE power supply.

Make sure the quality of the network cable is up to standard, because we have encountered AP or IPC unstable power supply due to poor network cable quality. Today, a friend left a message in the background asking whether the network cable distance of the network camera can support 130-150 meters as the merchant said. It is best for us to keep the network cable within 80 meters, because the signal will be attenuated at a distance, and even if it cannot be seen, there will be hidden dangers in the future.

Another point is what we said in the previous article. You need to pay attention to whether the terminal and the switch are standard POE devices. Standard and non-standard devices can be mixed and used.

The second case is that the switch supports POE, but the terminal does not support POE. The other end of the network cable coming out of the switch must be connected to a POE splitter, which we have also introduced. The transmission signal is divided into data signal and power.

The third type is when the switch does not support POE but the terminal does. The switch is connected to a POE power supply. Unlike a separator, the POE power supply can add power to the network cable and then transmit the signal to the terminal.

The fourth type is the situation where neither the switch nor the terminal is equipped. Some friends asked what to say about this situation. If it is not equipped, just follow the original plan. Since we are talking about POE power supply, if neither is supported, we are also prepared to take advantage of the benefits of POE power supply (although it may not happen, we are purely talking about technology), that is, connect the equipment at both ends, connect the switch to the POE power supply, and connect the other end of the network cable to the POE splitter, and finally transmit it to the terminal.

The above four situations describe all the scenarios where POE power supply can be used. In addition, the selection of POE switch is also very important. A good POE switch can not only make the system stable but also facilitate future maintenance and upgrades.