Ask a question about how to monitor audio connections

With audio function, it means that the network camera has an audio input interface, which can be connected to an external pickup, and a pickup should be purchased separately.

If the front-end is a network camera, the camera supports audio input, the pickup is connected to the camera's audio interface, and the back-end video recorder NVR only needs to have an audio output interface, which is used to connect the speaker ** sound.

If the front end is an analog camera, the pickup is connected to the analog video recorder DVR, the video recorder supports 5 audio channels, and there are 5 audio interfaces.

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Now the general analog camera is without audio, and if it has audio, the effect is generally not good, so now it is generally used to add audio by external pickups,

Look at what brand of monitoring system you use, Haikang and Dahua have their own pickups, but the effect is not ideal, customers have asked us many times to give them transformation, and a few pertinent words about the monitoring system Haikang is slightly better than Dahua, Dahua has many problems, it is recommended that you do not need to buy any fast fish beacon pickups, if you need to I can introduce you to a few good and inexpensive.

1. Some headbands with audio functions are often digital cameras, but the said audio function only has an audio transmission interface, if you want to use audio, you have to install a pickup in the camera manufacturer. Analog cameras are often referred to without audio capabilities. If you want to use audio, not only do you have to use the pickups, but you also have to cable the pickups to the central computer room.

2. The network video recorder with audio function does not need any cables, as long as the pickup is connected to the audio interface of the network camera (of course, the pickup needs to use 12V power supply). Turn on the audio on the network video recorder to hear the front-end sound.

The first thing to do is to make sure that your monitor or capture card has an audio input.

Second, you need to have an audio monitor head.

I haven't heard of stereo sound in the monitor head yet, and it's all mono.

Cables require two-core shielded wires.

The connector needs to be determined by the terminal of your host or virtual capture card, most of the host uses the RCA interface, and some the host or the capture card uses the BNC interface.

The host side needs to separate the power + pole and the shielded network cable, connect it to the power supply, weld the signal cable and the shielded mesh on the plug (RCA or BNC), and connect to the audio input interface of the host manuscript group or capture card.