1.Power light does <br> <br> power failure
2.Link light does <br> <br> fault the following is possible:
(a) Check if the optical fiber line is open circuited.
(b) Check whether the optical fiber line is excessively worn and exceeds the device receiving range.
(c) Check that the fiber optic interface is properly connected. The local TX is connected to the remote RX and the remote TX is connected to the local RX.
(d) Check if the fiber optic connector is properly inserted into the device interface, whether the jumper type matches the device interface, whether the device type matches the fiber, and whether the device transfer length matches the distance.
3. Circuit Link light does <br> <br> fault the following is possible:
(a) Check if the network cable is open circuited.
(b) Check whether the connection types match: Devices such as network cards and routers use crossover cables, and switches and hubs use direct lines.
(c) Check that the device transmission rate matches.
4. Network severe packet loss <br> <br> possible faults are as follows:
(a) The electrical port of the transceiver does not match the network device interface, or the duplex mode of the device interfaces at both ends does not match.
(b) There is a problem with the twisted pair and the RJ-45 head for testing.
(c) The fiber connection problem, whether the jumper is aligned with the device interface, and whether the pigtail is matched with the jumper and coupler type.
5. The two ends of the fiber transceiver cannot communicate with each other (a) The fiber is reversed, and the fibers connected to TX and RX are reversed.
(b) The RJ45 connector is not correctly connected to the external device (note the straight and twisted connections).
(c) The optical fiber interface (ceramic ferrule) does not match. This failure is mainly reflected in the 100M transceiver with photoelectricity control function. For example, if the pigtail of the APC ferrule is connected to the transceiver of the PC ferrule, it will not be able to communicate normally. However, non-optoelectronically controlled transceivers have no effect.
6. Time-off phenomenon (a) The attenuation of the optical path may be too great. At this time, the optical power of the receiving end can be measured with an optical power meter. If the optical sensitivity is within the range of 1-2 dB near the receiving sensitivity range, the optical path failure can be basically judged.
(b) The switch connected to the transceiver may be faulty. At this time, the switch is replaced with a PC. That is, the two transceivers are directly connected to the PC. The two ends are PING. If the switch fails, the switch can be judged to be faulty. .
(c) The transceiver may be faulty. At this time, both ends of the transceiver can be connected to a PC (not through the switch). After the two ends have no problem with PING, transfer one large file (100M) from one end to the other and observe it. The speed, such as the slow speed (file transfer below 200M for more than 15 minutes), can be basically judged as a transceiver failure.
The communication crash after a period of time, i.e. can not communicate, after the resumption of normal <br> <br> This phenomenon usually caused by the switch, the switch will have received all the data CRC error detection and length checking, check out The wrong packet will be discarded and the correct packet will be forwarded. However, some erroneous packets in this process cannot be detected in the CRC error detection and length check. Such packets will not be sent during the forwarding process and will not be discarded. They will be accumulated in the dynamic cache. In the buffer, it can never be sent out. When the buffer is full, it will cause the switch to crash. Because restarting the transceiver or restarting the switch at this time can restore the communication to normal, the user usually thinks that the transceiver is a problem.
8. Transceiver Test Method If you find that there is a problem with the transceiver connection, perform the following test to find out the cause of the failure. a) Near-end test:
Both ends of the computer on the PING, if you can PING通 then prove that the fiber transceiver is no problem. If the near-end test fails to communicate, the fiber transceiver can be judged to be faulty.
b) Remote test:
The two ends of the computer are PING. If the PING is inconvenient, you must check whether the optical path connection is normal and whether the transmitting and receiving power of the optical fiber transceiver is within the allowable range. If you can PING pass it proves that the light path is connected properly. It can be determined that the fault is in the switch.
c) Remote test to determine the fault point:
Connect the switch to the switch first and the two ends to the PING. If there is no failure, you can determine the failure of the other switch.
2.Link light does <br> <br> fault the following is possible:
(a) Check if the optical fiber line is open circuited.
(b) Check whether the optical fiber line is excessively worn and exceeds the device receiving range.
(c) Check that the fiber optic interface is properly connected. The local TX is connected to the remote RX and the remote TX is connected to the local RX.
(d) Check if the fiber optic connector is properly inserted into the device interface, whether the jumper type matches the device interface, whether the device type matches the fiber, and whether the device transfer length matches the distance.
3. Circuit Link light does <br> <br> fault the following is possible:
(a) Check if the network cable is open circuited.
(b) Check whether the connection types match: Devices such as network cards and routers use crossover cables, and switches and hubs use direct lines.
(c) Check that the device transmission rate matches.
4. Network severe packet loss <br> <br> possible faults are as follows:
(a) The electrical port of the transceiver does not match the network device interface, or the duplex mode of the device interfaces at both ends does not match.
(b) There is a problem with the twisted pair and the RJ-45 head for testing.
(c) The fiber connection problem, whether the jumper is aligned with the device interface, and whether the pigtail is matched with the jumper and coupler type.
5. The two ends of the fiber transceiver cannot communicate with each other (a) The fiber is reversed, and the fibers connected to TX and RX are reversed.
(b) The RJ45 connector is not correctly connected to the external device (note the straight and twisted connections).
(c) The optical fiber interface (ceramic ferrule) does not match. This failure is mainly reflected in the 100M transceiver with photoelectricity control function. For example, if the pigtail of the APC ferrule is connected to the transceiver of the PC ferrule, it will not be able to communicate normally. However, non-optoelectronically controlled transceivers have no effect.
6. Time-off phenomenon (a) The attenuation of the optical path may be too great. At this time, the optical power of the receiving end can be measured with an optical power meter. If the optical sensitivity is within the range of 1-2 dB near the receiving sensitivity range, the optical path failure can be basically judged.
(b) The switch connected to the transceiver may be faulty. At this time, the switch is replaced with a PC. That is, the two transceivers are directly connected to the PC. The two ends are PING. If the switch fails, the switch can be judged to be faulty. .
(c) The transceiver may be faulty. At this time, both ends of the transceiver can be connected to a PC (not through the switch). After the two ends have no problem with PING, transfer one large file (100M) from one end to the other and observe it. The speed, such as the slow speed (file transfer below 200M for more than 15 minutes), can be basically judged as a transceiver failure.
The communication crash after a period of time, i.e. can not communicate, after the resumption of normal <br> <br> This phenomenon usually caused by the switch, the switch will have received all the data CRC error detection and length checking, check out The wrong packet will be discarded and the correct packet will be forwarded. However, some erroneous packets in this process cannot be detected in the CRC error detection and length check. Such packets will not be sent during the forwarding process and will not be discarded. They will be accumulated in the dynamic cache. In the buffer, it can never be sent out. When the buffer is full, it will cause the switch to crash. Because restarting the transceiver or restarting the switch at this time can restore the communication to normal, the user usually thinks that the transceiver is a problem.
8. Transceiver Test Method If you find that there is a problem with the transceiver connection, perform the following test to find out the cause of the failure. a) Near-end test:
Both ends of the computer on the PING, if you can PING通 then prove that the fiber transceiver is no problem. If the near-end test fails to communicate, the fiber transceiver can be judged to be faulty.
b) Remote test:
The two ends of the computer are PING. If the PING is inconvenient, you must check whether the optical path connection is normal and whether the transmitting and receiving power of the optical fiber transceiver is within the allowable range. If you can PING pass it proves that the light path is connected properly. It can be determined that the fault is in the switch.
c) Remote test to determine the fault point:
Connect the switch to the switch first and the two ends to the PING. If there is no failure, you can determine the failure of the other switch.
Integrated Submersible UV Lamp
Submersible Uv Lamp,Submersible Uv Light,Roxin Uv Light,Uv Spotlight Bulb
Foshan Kingrate Optoelectronic Technology Co., Ltd. , https://www.kingrateuv.com