How to distinguish the second -hand fiber module?

With the continuous development of the optical fiber communication industry, more and more customers have begun to pay attention to the stability and reliability of optical modules. At present, the optical fiber module products on the market are different. Many manufacturers directly sell or use second -hand materials to produce optical modules in order to seek huge profits, which has brought great harm and hidden dangers to the market.

The so -called second -hand is a product that has been used and non -new. I would like to remind customers and friends that if you use the old optical fiber module to place a time bomb in the optical fiber network, it may cause the network to collapse at any time. The following is a few points for the preliminary identification of the second -hand optical module:

1. Appearance recognition: The appearance of the new module is very good, and the old modules are mostly products from different manufacturers. After a long period of use, the shell is very old, no gloss, some wear scratches, and the light interface has dust.

2. Light mouth recognition: Remove the dust -proof sleeve, you can see the lust of the sleeve, the luster of the second -hand light module is poor, and the inner wall will have scratches. The new sleeve is smooth, shiny, good in consistency Essence

3. Temperature recognition: See if the old module is working normally at 50-60 ° C.

In addition to the above methods, we can also identify whether the module is used in the performance of the light module.

Work current: The working current of the normal 1.25G SFP light module is generally below 180mA, and many working currents of the old modules will be above 220mA, so this module will be hot in the working state. When the environmental temperature becomes high, it will reduce Communication quality.

Low receiving sensitivity: The receiving sensitivity of many old modules does not reach iTUT.G.957 and IEEE802.3U international standards. It will not be lost when conducting conventional testing, but in a slightly harsh environment, such as the quality of fiber fiber is slightly worse, the passive non -device that is connected to it is slightly larger, then the communication link will cause the packet loss, which will seriously affect the impact. Network quality.

Obodynamic damage: The outer cavity of the light module is mostly plastic materials or metal materials. The multiple insertion and plugging through the joints will cause a certain degree of wear in the wall of the outer cavity. , So that the light path of the optical device has changed to a certain amount of light, such as: small light power, large code rate, abnormal light ratio than normal, etc. It is reflected in the equipment that is increased, the network timeout, the system is unstable, and even in severe cases or even even. As a result, the network cannot be connected for a long time.

Life life: The service life of the new optical module is generally more than five years. The second -hand fiber fiber module has been used for at least 5 years. possible.