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How to conduct safety inspection on fiber optic patch cords?

Update:25-06-2021
Summary:

Optical fiber jumpers are used to make jumpers from equ […]

Optical fiber jumpers are used to make jumpers from equipment to optical fiber wiring links, and are often used between optical transceivers and terminal boxes. Network communication requires the safety and smoothness of all equipment, as long as a little intermediate equipment failure will cause the signal to be interrupted.
Check carefully before use. Use the insertion return loss tester to first measure whether the jumper is open with a light pen to confirm that the fiber is unbroken, and measure the indicators. The general carrier-level indicators: insertion loss is less than 0.3dB and return loss is greater than 45dB. (It is recommended to use a good ferrule, the index is very good and the test is easy!) Another: some tips during the test can also help to detect qualified fiber jumpers!

Fiber jumper detection is to ensure the quality of the system connection, reduce failure factors, and find out the failure point of the fiber when a failure occurs. The main detection methods are manual simple test and precision instrument test. This method of manual simple detection is achieved by injecting visible light from one end of the fiber jumper, and seeing which one emits light from the other end. This method is simple but cannot be measured quantitatively. Precision instrument measurement:

The required tools are an optical power meter or an optical time domain reflectometer, which can measure the attenuation of the fiber jumper and the attenuation of the connector, and even the breakpoint position of the fiber jumper.This measurement can quantitatively analyze the cause of the failure. When testing optical fiber patch cords, there may be unstable numerical values. If the test is only fiber patch cords, then the connectors are not well done; if the fiber and patch cords are connected for testing, there may be a splicing problem. If the insertion loss value is not very good during the fiber test, it is easy to lose data packets in the actual use when a large amount of data is transmitted.

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