CHAPTER 8
8. Port Maintenance
8.1. Checking the Optical Interface
Before connecting the optical interfaces at the transmitting end and at the receiving end through optical fibers, you need to check and test the optical interface to avoid data transmission error and component damage.
1. Check whether the types of the optical interfaces at the transmitting and receiving ends match each other
The type of the optical interface at the transmitting end must match that at the receiving end in the respects: Wavelength, optical fiber mode, transmission rate, and maximum transmission distance.
2. Check whether the type of the optical interface matches the type of the connected optical fiber
The type of the optical interface must match the type of the connected optical fiber in the respects: Wavelength, optical fiber mode, and connector.
3. Check the optical interface for
For
4. Check the optical interface for
When using the optical module supporting the
If the optical signal power at the receiving end exceeds the overload point at the receiving end, the optical interface at the receiving end will be damaged. Therefore, you need to use an optical attenuator (active) or flange (passive) in the line to reduce the optical signal power at the receiving end. You can adjust the attenuation value of the optical attenuator or flange, so that the optical signal power at the receiving end is within a reasonable range.
If the optical signal power at the opposite end is less than the receiving sensitivity of the optical interface at the receiving end, it will cause data loss. If this problem occurs, you need to check whether the fiber connector contacts well or the optical interface is dirtied or damaged. If the problem still occurs, it may be caused by poor fiber link transmission and extreme
transmission distance. Then, you need to consider using an optical amplifier or optical module supporting longer distance transmission.
The table below describes the attributes of different types of optical modules, and the range of receiving optical power.
3P@C Installation Manual
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