Knowledge

The night window never gives much time, and the timeout is probably not due to slow splicing but lack of preparation. This article lists six preparations that must be completed before cutover, and how to write fallback criteria to make the plan truly executable on site.

Calculating the number of spare parts accurately does not mean that usable parts will be available when needed. This article talks about the daily management after warehousing, including the specific methods of entry and exit vouchers, code writing management by equipment, regular power-on sampling inspection and storage environment control.

The plan was written down in a pile of documents that no one looked through, and when the fiber was cut off, it was still in a hurry. This article provides a direct implementation method for writing emergency plans for communication optical cables based on three parts: event classification, fiber core routing simulation and hourly repair timing.

Inserting it back directly after wiping the end face is the most common cause of rework at the maintenance site. This article gives a four-step closed-loop approach of cleaning, end inspection, retesting, and recording, including the three types of defects to look for in end inspection and under what circumstances it must be wiped again.

Packet loss and bit errors are two sets of statistics, and talking about them together will only prolong the downtime. This article summarizes the delimitation sequence of first aligning the counter, then peeling off the three layers according to the segment points, and finally self-looping and replacing parts, which is suitable for network environments with multi-team handovers.

It is easy to miss slowly degrading links by just looking at whether the light collection has crossed the line. This article gives the methods of baseline archiving, three-level threshold setting for alerting actions, and degradation rate monitoring, which can be directly applied by teams that take over existing optical fiber networks.

There is only one signed delivery note for acceptance, and it is unclear what was measured when a problem occurred. This article provides the minimum field set to support traceability and judgment, the sampling focus of the four types of equipment, as well as the division of labor among the warehouse, quality, and project and the closed-loop deadline.

If there is a problem with the incoming materials, it does not mean that they have to be returned. If you make the wrong direction, it will delay the construction period. This article divides three types of disposal conclusions according to the nature of the defect, lists the respective evidence requirements, and reminds you to distinguish between selection and incorrect installation of raw materials.

Testing only the acceptance of the transmitting end can easily miss the receiving side. When a short link is equipped with a long-distance module, bit errors will also occur if the receiving power is higher than the overload point, and the phenomenon is often exposed only after it is put on the shelf. This article gives the light-collecting window calculation and two-way retest methods.

The report accompanying the goods is measured at the factory, and whether it is still true after transportation and temperature and humidity requires sampling verification. This article provides the sample selection method, fixed test actions, reasonable interval for the difference between the report and the report, and the results archiving method for the consignee to retest the luminous power.