Why does the optical transceiver have no signal? What is the cause? It is no stranger to everyone who mentions the optical transceiver, especially in the field of security. In recent years, with the continuous development and updating of the optical transceiver technology, it is now successful However, when we use the optical transceiver, there will always be a phenomenon of no signal. What is the reason for the phenomenon of no signal in the optical transceiver?

When we use the optical transceiver, in the case of no signal, we need to check the following:

1. Check whether the power supply of each device is normal

2. Check whether the video indicator of the corresponding channel of the receiving end is on. If the indicator is on, it means that the channel has video signal output. At this time, we need to check whether the video cable from the receiving end to the monitor or DVR and other terminal equipment is well connected, and whether the video interface connection is loose or has virtual soldering, etc.

3. If the video indicator of the receiving end is not on, check whether the video indicator of the corresponding channel at the front end is on. It is recommended that you re-power on the optical receiver to ensure the synchronization of the video signal.

If the above aspects cannot be eliminated, this is the method we can use to replace the inspection. The main method is to use the same type of equipment for exchange testing, that is, connect the optical fiber to the receiver that works normally at the other end or replace the remote transmitter. The faulty equipment can be accurately judged.