1. Compatibility issues (this is the most basic and the most common). The reasons for this situation are as follows:
a. Errors occurred in the process of importing compatible codes
b. The software update of the device causes the original unupgraded compatibility code to fail to work;
c. coding errors
2. Product loss, the reasons for this situation are as follows:
a. The electronic function circuit of the optical module and the device do not match;
b. The main chip and the device do not match;
c. Physical circuit failure;
d. Equipment failure;
e. Routing information error
3. Pollution and damage of the optical port. Due to the pollution and damage of the optical interface, the loss of the optical link increases, which leads to the failure of the optical link. The reasons for this situation are as follows:
a. The optical port of the optical module is exposed to the environment, and the optical port is polluted by dust entering;
b. The end face of the optical fiber connector used has been polluted, and the optical port of the optical module is polluted twice;
c. Improper use of the end face of the optical connector with pigtails, scratches on the end face, etc.;
d. Use inferior fiber optic connectors
4. ESD damage, static electricity will attract dust, change the impedance between lines, affect the function and life of the product, and cause ESD damage. The possible factors are:
a. Dry environment, easy to produce ESD;
b. Abnormal operations, such as: non-hot-swappable optical module live operation; directly touch the static-sensitive pins of the optical module without electrostatic protection; there is no anti-static packaging during transportation and storage;
c. The equipment is not grounded or poorly grounded;
After understanding the common problems of these optical modules, we must find ways to judge them and help us solve the problems in time. The following are several common ways to distinguish optical module failures.
