1. Pickup connection guide
1. The recorder is connected to the network camera
The video and audio encoding of the network device is completed by the camera, so if the camera does not have a built-in pickup, you need to connect an external pickup to the camera, for example, the connection method of the hikvision camera pickup.
Generally, there are three lines of pickups: ① power positive stage ② power negative stage ③ signal line;
① Connect the positive pole of the pickup power supply to the positive pole of the external power supply, the camera does not supply power to the pickup.
② The signal line of the pickup is connected to the “AUDIO IN” of the camera.
③ Connect the negative pole of the power supply of the pickup and the negative pole of the external power supply to the “GND” or “G” of the camera.
2. The video recorder is connected to the analog camera
The encoding of the analog device is implemented on the video recorder. There are several audio inputs on the video recorder to support several channels of camera recording. By default, the recording starts from the first channel. If you want to realize the intercom between the recorder and the client, you need to connect the pickup device and speakers to the recorder. Pickup wiring instructions are as follows:
Generally, there are three lines of pickups: ① power positive stage ② power negative stage ③ signal line
① The positive pole of the pickup is connected to the positive pole of the power supply;
② The negative pole of the pickup is connected to the negative pole of the power supply, and then the black common terminal is connected to the Q9 or lotus head shielding layer;
③ The signal line is connected to Q9 or the signal terminal of the lotus head.
Wiring rules: connect the signal line to the signal line, and connect the shield layer to the shield layer.
Note: Whether the audio signal input of the pickup meets the requirements of 2-2.4V level and 1000 ohm impedance. If not, it may cause no sound or low sound, or howling.
2. Configuration on the recorder
1. In System Configuration – Preview Configuration – Basic Configuration, enable the audio preview check box, and click Apply.
2. In Recording Configuration – Encoding Parameters, select the stream type as composite stream, check the record audio, and click Apply.
3. Speaker wiring guide
The speaker needs an external power supply, and it is recommended to choose an active speaker with an impedance of 600Ω. Connect the signal line of the speaker directly to the AUDIO OUT interface of the VCR.