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What should we do if there is no sound or poor sound quality of the network camera? How can we solve such a malfunction? Let's let the security network's Xiaobian come to analyze it for you.
What if the network camera has no sound?
1. First determine if the network camera audio input is LINEIN (linear level)
2. If it is OK to determine the LINE audio input port, then check if the power supply of the pickup is normal, and check if the pickup is correct.
If the above two are certain, the sound quality recorded by the network camera is still very vague or no sound, then the following further checks can be made.
1. First check the connection of the audio signal output of the pickup. The audio input connector of the general network camera is the 3.5 headphone connector, then the corresponding audio signal cable of the pickup should be transferred to the 3.5 headphone connector.
2, need to pay attention, although you are connected to the 3.5 headphone connector, but the 3.5 connector, he is divided into two channels and single channel points, that is, stereo and mono points, check your 3.5 connector is double The channel is also single channel.
3. If the confirmation is mono, then the positive pole of the pickup is connected to the positive pole of 3.5, and the negative pole is connected to the negative pole. If you are in a dual channel, then there will be a three-core cable, the negative of the pickup is connected to the negative pole of 3.5, and the positive pole is connected to the other two cores corresponding to the 3.5 connector, which are the left and right channels.
4. There is also a case where the audio input of some brands of network cameras is now available, LINE and MIC input, that is, an audio input port, which may be the left channel is the LINE right channel is the MIC, In such a case, the left and right channels cannot be connected together with the positive pole of 3.5, and they must be connected separately. For example, the negative pole is still connected to the negative pole, and the positive pole is connected to one of the 3.5 joints, and then the sound is normal. If it is not normal, it is replaced by another audio cable. It is not possible to connect the left and right channels in parallel, and it is also prohibited to use the mono 3.5 connector. Be sure to use a dual channel connector.
5. The connector is an international standard interface. If there are two black wires on the headphone connector of 3.5, it means a dual channel interface. The two black wires are actually insulated rings. The topmost part of the 3.5 connector is stereo. The left channel, the middle of the insulating ring is the right channel, and the root is the negative pole or ground. If it is a mono 3.5 connector, the opposite is that you can only see a black insulating ring, that is, the tip is the positive pole and the root is the negative pole.
The network camera has no sound solution for everyone to introduce here, more relevant information, please continue to pay attention to the hot security investment network.
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