How to tell the network cable pros and cons

1, test the speed of network cable

The transmission speed of the network cable is the most effective way to discriminate the quality of the network cable. In order to be closer to the actual use of the environment, while reducing the external interference link, the author recommends the use of two-machine direct-linked way. At the same time in order to ensure the accuracy of testing, try to use the quality of a good brand card, to ensure that the test will not occur hardware bottlenecks, but also to ensure that the computer system clean, neat, fast, or the computer itself will affect the speed of the transmission speed network. In addition, in doing the connection network cable, as far as possible the use of good quality crystal head, but also to ensure that the thread to do the specification, the only way to the external factors on the transmission speed of the network to minimize the impact.

　　2. Check the flexibility of network cable

Good quality network cable in the design to take into account the convenience of wiring, try to be very flexible, no matter how bending is very convenient, and not easily broken. And there are many profiteers in the market in order to get high sales profit, in the original is pure copper quality of the cable in the other inexpensive metal components, so the cost of the network cable will be reduced, but the quality and performance of the network cable itself is very different, the phenomenon is the network cable cable texture is no longer so soft, The transmission speed of the network cable is also greatly reduced. If in the process of wiring, repeatedly bending such a network cable, the cable inside the wire may be broken. Of course, if you find the network cable too soft, you should also note that it may be fake and inferior products.

　　3, test the combustible nature of the network cable

In general, the material that makes up the network cable must have the resistance to burning, otherwise there is a fire, then the loss is heavy. So everyone in the selection of network cable, be sure to check the network line skin of the combustible, to identify the authenticity of. In the specific test, you can first use scissors to cut 2 centimeters or so long cable skin, then with a lighter on the skin burning, the genuine line of the skin will be in the fireworks under the barbecue, gradually melting deformation, but the skin will certainly not burn itself up, if the skin of the network cable can not resist the test of fire, a little burning up, That network cable transmission speed again how high should also give up the choice, after all, such a network cable in the wiring project is very unsafe, use it will leave a lot of security risks. The author has been looking for a genuine network cable and fake network cable, and at the same time with a lighter light them, found that 6 seconds later, the genuine network line is only white smoke and over time, gradually melting deformation, and shoddy network line less than 2 seconds, was easily ignited, and accompanied by a large number of black smoke

　　4, testing the temperature resistance of the network

Wiring engineering in the network to resist the changes in the temperature of the outside has a very high demand, do not say that can resist any environmental changes, at least the network cable can not be in high temperature or low temperature environment is softened or frozen crack. In order to ensure that the performance of the network cable in the High-temperature environment is not affected, the genuine wire used in the outer skin material can withstand up to 50 degrees of high temperature test, will not appear similar to the network cable is softened or deformed phenomenon occurs. If you intercept a small segment of the network line, placed next to the stove for a period of time, found that the skin than the normal skin softening, it shows that the quality of the network cable is certainly not perfect.

In the actual selection of network cable, sometimes lack of testing environment or conditions, can not pass the above method on the quality of the network cable or material testing, we may wish to observe the network line on the logo to identify the authenticity of the network cable. In general, the formal brand of network cable on the skin are the type of cable and the manufacturer's trademark, such as CAT5 logo is to indicate that the network line is five lines, CAT6 logo on behalf of the network line is six lines; if there is no sign of the network cable, we should be vigilant to find ways to create conditions, To test and identify the network cable according to the above method.

　　5, test the distance of the wire

It is known that the common twisted pair is connected by four groups of intertwined cables. The so-called wire is the distance between the cable is actually the length of a section, generally, people use the offset to show how close each pair of lines is to each other, and in order to minimize the crosstalk between each pair of threads, the line pairs are often tightly twisted in a counterclockwise direction. And each pair of lines for the use of the offset should not be the same. But many production lines of profiteers in order to reduce production links, reduce process costs, often four pairs of lines in accordance with the same around the same winding, or even a lot of poor quality network cable around the distance unexpectedly up to several centimeters, so the line to the crosstalk between the big increase, seriously affecting the network cable performance.

　　6, test the extension of the skin

Considering the cable in the wiring often need to bend, so many regular manufacturers in the production of network cable to leave a certain degree of stretching to ensure that the network cable in the bending without damage. So when we pull the regular wire, we find that the skin is stretching. If the network cable is forcibly pulled off, or the outer skin under the external force, there is a crack phenomenon, it shows that the quality of the network cable is problematic.

Anyway, when buying network cable compare, many simpleton always can't be wrong.