How to perform safety inspection on fiber patch cords? Optical fiber jumpers are used to make jumpers from equipment to fiber optic wiring links, and are often used between optical transceivers and terminal boxes. The communication of the network requires the safety and smoothness of all devices. As long as a little intermediate device fails, the signal will be interrupted. Before use, it should be carefully tested. First, use a light-passing pen to measure whether the jumper is clear to determine whether the optical fiber is not broken, and measure the indicators. 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 to pass!) In addition: some small skills during the test can also help to measure a qualified optical fiber jumper!

The purpose of fiber jumper detection is to ensure the quality of system connections, reduce fault factors, and find out the fault point of the optical fiber when a fault occurs. The main detection methods are manual simple test and precision instrument test.

This method of manual and simple detection is realized by injecting visible light from one end of the optical fiber jumper, and seeing which one emits light from the other end. This method is simple but cannot be quantitatively measured.

Precision instrument measurement: The required tools are an optical power meter or an optical time domain reflectometer, which can measure the attenuation of the optical fiber jumper and the attenuation of the connector, and even the position of the breakpoint of the optical fiber jumper. This measurement allows quantitative analysis of the cause of the failure. When testing optical fiber jumpers, there will be unstable numerical values. If only optical fiber jumpers are tested, it means that the connector is not good enough; During fiber testing, if the insertion loss value is not good, it is easy to lose data packets when a large amount of data is transmitted in actual use.