The integrated wiring project is still commonly used. So I studied the specifications of the Integrated Wiring project and the Problems and Solutions encountered in the implementation project. I will share them with you here, I hope it will be useful to you.
I. Preface
Shaanxi Provincial computer information network quality supervision and inspection site is a professional quality control organization that conducts comprehensive wiring engineering inspection in the province for the society. According to statistics, none of the units commissioned by our site have all passed the integrated wiring engineering inspection at one time. Most units must undergo multiple rectifications before they can all pass the inspection, however, it is very difficult for individual organizations to make adjustments, even to the point where they cannot. In recent years, our website has strictly controlled the quality of the inspected units. At the same time, we have accumulated experience in analyzing and solving problems. We are sharing our experiences with you.
2. Find the cause from the result
Assuming that the quality of twisted pair cables and optical cables is all qualified, only the unqualified items in the test results are analyzed to find the root cause of the problem.
1. physical wiring such as open circuit and wrong line sequence fail.
Root cause:
① It belongs to the subcontracting project or part of the subcontracting project.
② Temporary recruitment assistance.
Most of the bottom-level errors were caused by the generic cabling project, which only included the total package system integration. During the bidding, only the qualifications and qualifications of the main projects in Party B's general project should be reviewed, and the qualification review of the subcontracting project should be neglected. Some integrated cabling projects save costs. The common practice is to temporarily recruit auxiliary workers after completing the project.
2. Return Loss failed
Root cause:
① Mostly on the connection points between the Jumper and the information panel or the distribution frame module
In a twisted pair link, problems with ripple loss will seriously affect data transmission, especially full-duplex transmission performance. I stood at the detection site and found that there were multiple engineering teams in the whole building, and the engineering teams shuttled through the construction period in the building. Some room interior decoration, especially the wall paint, were not completed yet, the module has been laid and the Panel has been mounted.
Solution: Clean the lime particles and dust on the module, re-Press the module, and go to the Panel.
3. noise or crosstalk failure
Root cause:
① Environmental electromagnetic interference
Solution: Rectification of unqualified items affected by environmental electromagnetic interference is not so easy. Some organizations only have 1% of the information points, which are reserved points.
4. optical fiber attenuation failed
Root cause:
① Dust, fingerprint, humidity and other factors damage the connector.
② There are other reasons for the increase in optical fiber loss during Optical Fiber fusion.
Solution: attenuation is the primary indicator for testing optical cables.
① Clean up dust and fingerprints and replace connectors.
② If the attenuation still exceeds the standard after re-weld, reduce the weld point or replace a long optical cable.
Iii. Conclusion
In recent years, the Shaanxi Provincial computer information network quality supervision and inspection site has been collecting statistics from the inspection data of the inspected units. The quality of the integrated network cabling project affects the normal operation of the computer information network (such as transmission speed and stability) the proportion is increasing. The average person has a misunderstanding about the integrated wiring project. The quality of the cabling is measured only by the ability to access the Internet. As a result, the quality of the cabling is based on the perception, and international standards are not paid attention to. The third-party inspection is unnecessary. Only 20% of the units that require detection are allowed. Therefore, the current situation of the Integrated Wiring project is really worrying and should attract the attention of the owners and insiders. It is recommended to issue mandatory national standards for the acceptance of integrated wiring engineering systems to eliminate potential risks and regulate market behavior.
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