I. Overview
Line is the most basic system in the intelligent building of modern society. At present, the information industry is developing rapidly. The importance of the network has been deeply branded in people's minds. The network has become an irreplaceable part of life. For the most important hardware supporting the network, the performance of the integrated wiring system directly affects the transmission performance of the network.
In the integrated wiring system, only through the most stringent TIA standard test can we ensure the good performance of the entire system. In a complete and good channel, the main components include twisted pairs, modules, patch panels, jumpers, etc. Here, we mainly talk about jumpers in wiring.
Speaking of jumpers, I believe that people with a little common sense will think that this is no longer a simple cable. As long as there is a crystal head, you can make a variety of jumpers, 568A, 568B, direct connection, interconnection, and even Make your own "568C" "568 ..." and other N kinds of jumpers! Although it is a bit exaggerated, but it does exist in the actual construction and application, regardless of the connection method, as long as it can be connected. Online baidu, such as "network cable production method", can have N pieces of information, are to teach you how to make a jumper yourself, no matter how the performance of your own production, I think, in use, some people must appear frequently The network is disconnected and connected, or after a period of normal use, the network cannot be connected. Re-plug the PC's network cable and use it again. Or, after a long period of use, the cable and the crystal head will be poorly connected. Phenomenon and so on. These reasons are mostly caused by accidents directly or indirectly caused by making jumpers by themselves. If such wires are used in structured integrated wiring in medium and large buildings, the result can be imagined. It will cause you or your enterprise or unit to lose unpredictable losses, and also cause waste of manpower, financial resources, material resources, etc. to the enterprise or unit, thereby increasing the cost.
In some projects, the construction personnel often use the twisted-pair cables abandoned in the construction and buy ordinary crystal heads from the market to make their own jumpers. However, British Aida does not recommend making their own jumpers here, there are the following main reasons :
1. The six types of jumpers made by ourselves cannot pass the component test of the single product in TIA / EIA at all.
2. In the channel test, use the self-made jumper to test. In the entire channel, even if other connectors or copper cables pass the test completely or exceed the TIA / EIA standard, then our test results will not pass
3. In the TIA standard, it is not recommended to make jumpers on site for wiring systems
4. Since the self-made jumper wire core is a single core wire, it is easy to break after multiple insertions and removals
5. When the self-made jumper is tested, it directly affects the performance of the entire channel, resulting in the failure to pass the test and the acceptance of the entire project.
6. Affect the performance of the products provided by the wiring manufacturers. Thereby damaging the product image
7. Cannot meet the requirements of transmission bandwidth in wiring
Of course, the above is just a problem encountered in construction. The problem in use will be more serious, as we talked about earlier. In order to make the products used have higher transmission performance in engineering and use, the TIA standard does not recommend the use of self-made jumpers. Of course, when the manufacturer makes a plan for the project, it has already listed the jumper of the manufacturer's matching specifications in the plan.
2. Introduction of Jumper
So, what is the difference between a home jumper and a homemade one? Let's compare the six types of ADDISON jumper products.
Production process Aidun ADDISON jumper from material selection to delivery, going through dozens of processes, each process must undergo rigorous testing, production must also be completed using special equipment in a specific environment, as long as there are homemade jumpers The network cable pressing tool can be completed.
1. Crystal head
The regular jumper is generally a multi-piece suit (two-piece suit or three-piece suit). The metal object on the front is a gold-plated copper gold finger, and the metal gold finger on the front of the crystal head is polished. It has good toughness to ensure that each wire core has good contact and transmission performance with the metal head of the crystal head. At the same time, it will have brackets, ferrules and other plug-ins that further enhance performance and stability. The general metal contact of the crystal head The body is a copper body and only a crystal head without other plugs. When the hardness of the metal shrapnel is poor, the metal shrapnel cannot be inserted into the wire of the twisted pair, the crystal head will not work; when the toughness does not meet the requirements, It is easy to break the metal shrapnel, as shown below:
2. Jumper wire
The special wire for jumpers is generally a multi-strand pure copper wire, which has better flexibility and high transmission rate. It is easy to move and carry, can maintain the performance of the cable, and is not easy to break and bend. The self-made wire is generally an ordinary twisted pair, which has a single core and poor flexibility. Over time, the single core copper wire may break. In order to reduce costs, some manufacturers mostly use galvanized copper or oxidized copper as the copper core, and there is no strict execution of process requirements for the twisting of the pair, which directly affects the performance of the jumper.
3. Notes
ADDISON jumper injection molding is a very strict process, which has a great relationship with precision equipment, which directly affects the performance and durability of the jumper. The jumper after injection is greatly increased between the wire and the crystal head. The adhesion of the connection ensures that there will be no problems after repeated use. The self-made jumper is generally not injection molded. The problem is obvious. After repeated plugging and unplugging, it is easy to fall off or break the core between the crystal head and the wire.
3. Jumper test
In order to ensure the quality of every factory-made jumper, every process must go through rigorous testing. Test according to EIA / TIA jumper standard "TIAPATCHCORDCat5e / 6XXM" and other standards. The most important test parameters NEXT (residual amount) and RL (echo) in the factory test can only be measured by professional testing instruments, and only after all the parameters have passed the test can they be shipped. The self-made jumper uses an ordinary wire tester to test only the wiring diagram, and cannot perform more performance tests, which affects the performance of the entire link.
Through the above comparison, we can intuitively make the difference between the self-made jumper and the professional jumper. At present, high-bandwidth network cabling has been used in intelligent buildings, and self-made jumpers simply cannot meet actual needs. Jumper, as the only exposed wire in the integrated wiring and moving characteristics, the appearance is harmonious and beautiful, and the durability is also one of the important selection references.
ADDISON series jumpers ensure the communication performance in the link, strict production process, each jumper is tested before passing the factory, you can intuitively see the performance of the jumper through the test report attached to the product, fully achieved or Higher than EIA / TIA standard, guaranteeing to provide customers with the best performance.
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