Six types of network cable characteristics

Category 6 can provide 2.5 times higher high-speed bandwidth than Category 5e in terms of transmission rate, and 300% higher ACR value than Category 5e at 100MHz. Now many places begin to use Category 6 network cables for data and monitoring system wiring transmission . So, what should be paid attention to in the construction of six types of network cables? What are the characteristics of the six types of network cables?

What should be paid attention to in the construction of six types of network cables

1. Since the outer diameter of the Category 6 cable is thicker than that of the general Category 5 cable, in order to avoid the entanglement of the cable (especially at the elbow), pay attention to the filling degree of the pipe diameter when laying the pipeline, generally the inner diameter is 20mm It is advisable to put 2 Category 6 wires in the line pipe.

2. Strictly abide by the construction specifications of the wire trough to ensure the appropriate bending radius of the cable. When bypassing other wire grooves up, down, left, and right, the turning slope should be gentle. Pay attention to whether the cable at both ends can still be covered with the cover plate after the cables are sagging and stressed.

3. During the pay-off process, attention should be paid to the control of the tension. For the cable packaged with reel, the reel should be put on the self-made wire rod, and the pay-off end should be pre-pulled from the reel box for a part of the cable. The other end of the pipeline is extracted, and the pre-pulled line should not be too much, so as to avoid multiple lines tangled and surrounded on the field.

4. After the wire drawing process, the redundant cables left at both ends should be organized and protected. When coiling the wire, it should follow the original direction of rotation. The diameter of the coil should not be too small. Use wire clips to fix it on the slot, ceiling or carton. Inside, make a mark.

5. When arranging, bundling, and arranging cables, the redundant cables should not be too long, and the cables should not be superimposed and stressed.

6. During the entire construction period, the construction shall be organized in strict accordance with the construction process. Each type of work shall organize the construction according to the construction plan and the construction network plan, and the construction tasks of this type of work shall be completed before the start of other subsequent types of work.

Six types of network cable wiring

What are the characteristics of the six types of network cables

1. Cable tension

Do not exceed the cable pull tension specified by the cable manufacturer. Excessive tension can deform the pair lay in the cable, seriously affecting the cable's ability to suppress noise, as well as seriously affecting the cable's structured return loss, which changes the cable's impedance and impairs overall return loss performance.

2. Cable bending radius

Avoid excessive bending of the cable as this will change the lay length of the pairs in the cable. If bent excessively, the pairs can spread apart, resulting in impedance mismatch and unacceptable return loss performance, and can also change the relationship between the 4-pair lay lengths within the cable, resulting in noise suppression issues. In general, the bending radius of the cable shall not be less than 8 times the diameter of the installed cable. For a typical Category 6 cable, the bend radius should be greater than 50mm.

3. Line pair spread out

At the cable termination point, the lay length of each pair in the cable should be as close to the data center as possible. The pair lay length is calculated by the cable manufacturer, and changing the cable lay length will adversely affect the cable performance. Although the ISO and TIA Category 5e cabling standards specify the length (13mm) over which pairs are spread out, they do not make such provision for Category 6 cabling, and the current recommendation is to follow the recommendations provided by the manufacturer.

4. Cable compression

Avoid over-tightening the cable ties and compress the cables. If the cable is too tight, the twisted wires inside the cable will be deformed, affecting its performance. Generally, the return loss will be more obviously unqualified, and the effect of the return loss will accumulate. Increase the total loss. Hooks and looped cable ties are recommended.

5. Cable knot

When pulling the cable from the spool, be aware that the cable can sometimes get tangled. If the cable is kinked, it should be considered damaged and the cable should be replaced. Installation pressure can cause installers to straighten cable knots, however, damage has occurred and will be detected during cable testing.

6. Cable weight

Category 6 cables are about twice as heavy as Category 5 cables, with 24 Category 6 cables in one meter weighing nearly 1.0kg, while the same amount of Category 5 or 5e cables weighs just 0.6kg. When using suspension wires to support cables, the weight of the cables must be considered. It is recommended that each suspension wire support point support a maximum of 24 cables per bundle.

7. The number of cables in a bundle of cables

When any number of cables are bundled together in very long parallel lengths, the capacitive coupling of pairs of different cables in a bundle of cables with the same lay length can lead to a significant increase in crosstalk. This is called "alien crosstalk," and the best way to eliminate the adverse effects of alien crosstalk is to minimize the length of parallel cables.

8. Strip the cable sheath

At the cable termination point, the exposed wire pairs from the outer sheath to the data center after termination must be kept to a minimum. If it is not necessary to strip the cable jacket, the wire can be directly connected to the data center. The TIA or ISO wiring standard specifies the length of the stripped sheath. By minimizing the length of the stripped sheath, the wire pair laying distance inside the cable is guaranteed to achieve the most effective transmission path. The stripped cable on the IDC An oversized jacket will compromise the NEXT and FEXT performance of a Category 6 cabling system.

The above is the whole content of what to pay attention to in the construction of Category 6 network cable and the characteristics of Category 6 network cable. Of course, in terms of construction and installation, Category 6 is much more difficult than Category 5. The construction of Category 6 wiring system must be carried out in accordance with the specifications required by international standards.