How to quickly troubleshoot the failure of video optical transceivers will be the content that Xiaobian will introduce next.
1. The video optical transceiver cannot be connected to the camera. First, we confirmed that the video optical transceiver is operating normally. This indicates that the optical fiber is communicable. When the attenuation of the optical fiber is greater, the loss of the video will be greater than the loss of control data of the pan-tilt.
Before transmitting the PTZ control signal, check the TD (Data Activity) LED on the receiver. The normal situation is when the data is transmitted, the light is always on, or it flashes following your operation. If not, we will transfer the problem to the receiver. We can replace it with a receiver of the same model, and the problem is obvious.
2. Electro-optic signal receiving problem of video optical end Video optical-end electromechanical signal receiving problem, we usually use the replacement method. First of all, we confirm the power supply, along the power supply and then the entire signal connection is correct. After the above two ok, the monitor still has no picture.
Disconnect the end of the fiber-optic receiver and the cable and power supply remain unchanged. If the display has snowflakes after the fiber is disconnected, the fiber's optical connection is normal before the fiber is disconnected.
The snow on the screen can also determine that the receiver is working properly, may not have received a sufficient amount of optical signals, and then connect the fiber to the receiving end. If the display turns black again, the carrier output of the transmitter cannot be frequency modulated (that is, there is no video input signal) or there is a problem with the transmitter itself.
First confirm that all connections are correct, and then verify that all devices are powered. After confirming the above two points, if the monitor is still black, the fiber input is disconnected from the receiver, and the cable and power supply connections remain unchanged. When the fiber is disconnected, if the screen of the monitor is a snowflake, the optical connection of the fiber is normal before the fiber is disconnected. A screen with snowflakes usually means that the receiver is working properly, but it may not have received enough light signals. Connect the fiber again. If the screen turns black again, then the carrier output of the transmitter cannot be frequency modulated (that is, there is no video input signal) or there is a problem with the transmitter itself.
Check the video input process on the transmitter: Disconnect the signal source from the optical transmitter and then use a video cable to connect the signal source directly to the monitor. If the monitor is working, replace the optical transmitter. If the monitor is still blank with the fiber disconnected, you need to check that all connections to the monitor are correct. If there is no problem with all connections, try a different receiver or monitor.
If the video image has snowflakes, use an optical power meter to detect the light power entering the receiver. If the optical power meets the requirements of the receiver, the receiver may have problems. Try another for a receiver. If you still cannot solve the problem, try another transmitter. If the optical power of the receiver is lower than the nominal value, check the light output of the transmitter with an optical power meter and a fiber jumper. If the output meets specifications, there may be a problem with the fiber or optical connector. Wipe the optical connector and verify that the correct optical transmitter has been selected based on the type of fiber and the length of the connection. If the light output is still too low, replace the transmitter.
1. The video optical transceiver cannot be connected to the camera. First, we confirmed that the video optical transceiver is operating normally. This indicates that the optical fiber is communicable. When the attenuation of the optical fiber is greater, the loss of the video will be greater than the loss of control data of the pan-tilt.
Before transmitting the PTZ control signal, check the TD (Data Activity) LED on the receiver. The normal situation is when the data is transmitted, the light is always on, or it flashes following your operation. If not, we will transfer the problem to the receiver. We can replace it with a receiver of the same model, and the problem is obvious.
2. Electro-optic signal receiving problem of video optical end Video optical-end electromechanical signal receiving problem, we usually use the replacement method. First of all, we confirm the power supply, along the power supply and then the entire signal connection is correct. After the above two ok, the monitor still has no picture.
Disconnect the end of the fiber-optic receiver and the cable and power supply remain unchanged. If the display has snowflakes after the fiber is disconnected, the fiber's optical connection is normal before the fiber is disconnected.
The snow on the screen can also determine that the receiver is working properly, may not have received a sufficient amount of optical signals, and then connect the fiber to the receiving end. If the display turns black again, the carrier output of the transmitter cannot be frequency modulated (that is, there is no video input signal) or there is a problem with the transmitter itself.
First confirm that all connections are correct, and then verify that all devices are powered. After confirming the above two points, if the monitor is still black, the fiber input is disconnected from the receiver, and the cable and power supply connections remain unchanged. When the fiber is disconnected, if the screen of the monitor is a snowflake, the optical connection of the fiber is normal before the fiber is disconnected. A screen with snowflakes usually means that the receiver is working properly, but it may not have received enough light signals. Connect the fiber again. If the screen turns black again, then the carrier output of the transmitter cannot be frequency modulated (that is, there is no video input signal) or there is a problem with the transmitter itself.
Check the video input process on the transmitter: Disconnect the signal source from the optical transmitter and then use a video cable to connect the signal source directly to the monitor. If the monitor is working, replace the optical transmitter. If the monitor is still blank with the fiber disconnected, you need to check that all connections to the monitor are correct. If there is no problem with all connections, try a different receiver or monitor.
If the video image has snowflakes, use an optical power meter to detect the light power entering the receiver. If the optical power meets the requirements of the receiver, the receiver may have problems. Try another for a receiver. If you still cannot solve the problem, try another transmitter. If the optical power of the receiver is lower than the nominal value, check the light output of the transmitter with an optical power meter and a fiber jumper. If the output meets specifications, there may be a problem with the fiber or optical connector. Wipe the optical connector and verify that the correct optical transmitter has been selected based on the type of fiber and the length of the connection. If the light output is still too low, replace the transmitter.
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