Network cable six types of lines need to pay attention to these points in weak current projects

The network cable six-class wiring system can provide 2.5 times higher speed bandwidth than the super five in the transmission rate, and is higher than the super five-class 300% ACR value at 100 MHz.

In terms of construction and installation, the six categories are much more difficult than the super five. The construction of the Category 6 cabling system must be carried out in accordance with the specifications required by international standards. Unreasonable pipeline laying, non-standard installation steps, and inadequate management systems will affect the test results (including physical and electrical performance) of Category 6 cabling, and some will become difficult to repair, even Re-lay a link to replace.

Problems needing attention during construction

Before construction, you must carefully check the construction drawings of other majors, especially the civil construction drawings, water, electricity, and ventilation construction drawings. Because the length of the horizontal route will have a certain impact on the level of the system, and the civil construction drawing, water, electricity, and ventilation construction drawings have the greatest impact on the routing of the horizontal wiring subsystem pipeline. AutoCAD can be used to draw a three-dimensional large sample map, on the large sample map to indicate the direction of other professional pipelines, the elevation and the specifications of various pipelines, to develop a construction plan for the Zui excellent laying pipeline, to meet the shortest route routing, Easy to install.

At present, there are three methods for horizontal wiring: the steel pipe is used for darkening, the wire trough is used inside the ceiling, the steel pipe connection method is used between the wire trough and the information point, and the ground wire trough is hidden. The ground wire trough is applied to the higher gear. building. The information points arranged in the building are dense and open, and the office space needs to be cut off. It is characterized by relatively large investment, high process requirements and difficult construction.

Good installation quality enables the horizontal wiring subsystem to ensure good working condition and stable working performance during its working cycle. Especially for high-performance communication cables and optical fibers, the quality of the installation has a special impact on the opening of the system. Significant, so I believe that in the installation of cables, we must strictly comply with the EIA/TIA569 standard.

The cables, information sockets, jumpers, and connecting cables selected for the integrated wiring system must be the same type as the selected one. If the Category 5 standard is selected, the cables, information sockets, jumpers, and connecting cables must be 5 If the system adopts shielding measures, all components selected by the system are shielded components. Only in this way can the system shielding effect be ensured and the design performance index of the whole system can be achieved.

Characteristics of Category 6 Cables

1, cable tension tension

Do not exceed the cable tension specified by the cable manufacturer. Excessive tension causes the wire to be twisted in the cable, which seriously affects the cable's ability to suppress noise and severely affects the cable's structured return loss, which can change the impedance of the cable and impair the overall return loss performance.

2, cable bending radius

Avoid excessive cable bending as this will change the lay length of the cable pair. If the bend is excessive, the pairs may spread out, resulting in impedance mismatch and unacceptable return loss performance. In addition, the relationship between the four pairs of lay lengths inside the cable is changed, which leads to noise suppression problems. In general, the cable bend radius must not be less than 8 times the diameter of the cable after installation. For a typical Category 6 cable, the bend radius should be greater than 50 mm.

3, the line is scattered

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

4, cable compression

Avoid over-tightening the cable tie and compressing the cable. If the cable is too tight, the strands inside the cable will be deformed, which will affect its performance. Generally, the return loss will be more unqualified. The effects of return loss accumulate, and each over-tightened cable tie pair increases the total loss. Hook and loop cable ties are recommended.

5, cable knotting

When pulling the cable from the reel, be aware that the cable may sometimes be knotted. If the cable is knotted, it should be considered as cable damage and the cable should be replaced. Installation pressure can cause the installer to straighten the cable tie. However, damage has already occurred and will be detected during cable testing.

6, cable weight

The six types of cables weigh about twice as much as Category 5 cables, and the one-meter-long 24 Category 6 cables weigh nearly 1.0 kg, while the same number of Category 5 or Category 5 cables weigh only 0.6 kg. Cable weight must be considered when using suspension cables to support cables. It is recommended that each suspension line support point support up to 24 cables per bundle.

7, the number of cables in bundles of cables

When any number of cables are bundled together in a long parallel length, the pair-to-coil coupling of the different cables in the bundle of cables having the same lay length results in a significant increase in crosstalk. This is called "external crosstalk" and the most ideal way to eliminate the adverse effects of alien crosstalk is to minimize the length of the parallel cable.

8, cable sheath stripping

At the cable termination point, the pairs that are exposed from the skin to the data center after termination must be kept to a minimum. For the cable jacket not to be stripped, the wires can be connected directly to the data center. The TIA or ISO cabling standard specifies the length of the stripped strip, which minimizes the length of the stripped sheath and ensures the wire-to-pair distance inside the cable for the most efficient transmission path. Excessive sheathing stripped on the IDC will impair the NEXT and FEXT performance of the Category 6 cabling system.

Six types of construction considerations

1. Since the outer diameter of the six types of cables is thicker than the general five types of wires, in order to avoid the winding of the cables (especially at the elbows), the filling degree of the pipe diameter must be paid attention to when laying the pipeline, generally the inner diameter is 20 mm. The line tube is suitable for placing two six types of lines.

2. Strictly observe the construction specifications of the cable trough to ensure a proper cable bending radius. When the other slots are turned up, down, left, and right, the slope of the curve should be gentle. Pay attention to whether the cable can be covered without damage to the cable after the cable is sag.

3. In the process of paying off, pay attention to the control of the pulling force. For the cable with the reel packaging, the reel should be placed on the self-made pull rod, and the cable end should be pre-pulled from the reel box for the cable. The other end of the pipeline is extracted, and the pre-pull line should not be too much, so that multiple wires are entangled around the field.

4. After the cable drawing process is finished, the redundant cables left at both ends should be arranged and protected. When the wire is wired, follow the original rotation direction. The diameter of the coil should not be too small. Use the wire card to fix the wire slot, ceiling or carton. Inside, do the labeling.

5. When arranging, tying, and arranging cables, the redundant cables should not be too long. Do not allow the cables to be superimposed and stressed. The coils should be consolidating and the fixed ties should not be too tight.

6. During the whole construction period, the construction shall be organized strictly according to the construction process. Each type of work shall be organized 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 follow-up types.