In the security industry, you must not use POE jiao to change the machine and purchase POE jiao to change the machine. However, the friends who have just entered the business may feel complicated. Indeed, just like when I first entered the business, I was also amazed, fully understand Can not POE jiao change machine, fiber optic transceiver, jiao change these monitoring equipment products, no way, can only make up the knowledge of communication products, today we will look at how to choose a good POE jiao change machine and POE jiao machine use points. I don't say how comprehensive these knowledge points are, but believe me, understanding this knowledge can make you take a lot of detours and reduce a lot of unnecessary troubles. I believe that after reading this article, you will thank me!
The first big point: What issues should you pay attention to when choosing POE jiao?
1, don't be greedy for small, cheap
Many people are ignoring the low price and neglecting its quality problems, especially the core things. We all know that the domestic market is a big market with a variety of products, all kinds of products have everything, when you choose, you can see the luan, PoE The change of the piano is no exception. There are countless brands of PoE jiao on the market, and the price and quality are very different. Some people who are initially exposed to PoE power supply think that as long as it is a PoE jiao change machine, it doesn't matter if it is a bad point. Therefore, in order to save costs, it is often compared with a number of products and then choose the one with a low price. You think that you have bought good things with zui with less money, but I don't know that the maintenance in the later stage will only make you more headaches.
Not to say that it is cheap, not cheap, but also good, but after all. Generally speaking, the higher the price of a thing, the hardware, parts, accessories, chips, etc. used are high-quality, guaranteed, and very low-priced things, there are many hidden dangers and deficiencies. For the PoE jiao changer, the price is too low, there may be many problems in the later use, such as unstable power supply, no power supply, and can not be guaranteed after the sale. Everyone's thoughts are the same, they want to buy high quality and low price, personally feel that Shenzhen Tianbo's PoE jiao change machine is OK, Shenzhen Tianbo is a communication equipment manufacturer specializing in production and R&D, and has made great achievements in communication products. Maybe you can meet everyone's requirements.
2, try not to use non-standard POE jiao change machine
Although most of the PoE jiao changers are standard, there are also a small number of non-standards. The reason why non-standards exist is because the cost is low, but because some places use non-standards. However, non-standard PoE jiao changeovers have security risks, such as burning out network devices connected to them. When using a non-standard PoE jiao to change the machine, the supply voltage and the voltage of the powered device must be the same. The standard PoE jiao changer is safer and can automatically connect to the network equipment connected to it. Only the PoE jiao network device that supports PoE power supply will start to supply power to ensure the safety of the powered device. The difference between the non-standard POE jiao changer and the standard POE jiao change machine is: the standard POE jiao change machine is smart power supply, and the non-standard POE jiao change machine is vice versa, so it is easy to appear burning machine.
3, choose the right model
There are many models of PoE jiao, the number of ports is 4, 8, 16, 24, the port transmission rate is 100 megabytes and gigabit, and the power supply is 60W, 96W, 150W, 250W, 400W. The choice of port is not the more. The more you want, the more you need the port number and the port transfer rate. The so-called suitable for yourself is good, you say yes?
Another point must be remembered: PoE jiao switch port transfer rate usage rate is about 40~60%, if a network theoretically uses 100M PoE jiao to change the machine, then please choose Gigabit jiao change machine. In addition, for surveillance cameras with infrared lamps, the power of the infrared lamps must be considered.
The second biggest point: What should you pay attention to when using POE jiao to change machines?
1, the superior network cable, this dried, used, eaten losses know. The quality of the network cable directly affects the quality of the power supply of the POE jiao. Here, I recommend several easy-to-use network cables, five types of network cables, five types of network cables and six types of network cables. The internal material of the network cable is also very important. The internal materials generally have these types: aluminum wire, copper-clad aluminum wire, copper-clad iron wire, iron core wire, pure copper wire, etc., in which the effect of pure copper wire is good, and several others You don't have to use it.
2, the distance within 80 meters theoretically PoE power supply is 100 meters, but in view of the quality of the market access line and the environment, the actual power supply distance is maintained within 80 meters.
Reminder: PoE power supply is just one of the power supply methods for many engineering projects. There are many other ways, each with its own applicability. It doesn't matter whether it is good or bad. You can choose to use according to project requirements and construction difficulty.
Today’s Tianbo small class is here, I hope to help you!
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