4-Wire Analog Camera Wiring Instructions45

Introduction

4-wire analog cameras, also known as CCTV cameras, are commonly used in surveillance systems to transmit video footage over long distances. They are typically connected to a digital video recorder (DVR) or network video recorder (NVR) using coaxial cables that carry both power and video signals. This guide provides step-by-step instructions on how to properly wire a 4-wire analog camera.

Materials Required
4-wire analog camera
Coaxial cable (RG59 or RG6 recommended)
BNC connectors (2 per camera)
Power supply (12V DC)
Electrical tape

Step 1: Prepare the Cables

Cut two coaxial cables to the desired length. Strip the outer jacket at both ends of each cable for about 1 inch. Braid the exposed shielding wires together and twist them into a single strand. Tin the ends of the shielding wires with solder.

Step 2: Connect the BNC Connectors

Attach a BNC connector to each end of both coaxial cables. Screw the connector onto the cable until it is hand-tight. Then, use a BNC crimping tool to secure the connection.

Step 3: Identify the Camera Wires

Most 4-wire analog cameras have four color-coded wires: red (power), black (ground), white (video), and yellow (video). Refer to the camera's user manual for specific wire colors.

Step 4: Connect the Camera

Connect the red wire from the camera to the positive terminal of the power supply. Connect the black wire from the camera to the negative terminal of the power supply. Connect the white wire from the camera to the video input of the DVR or NVR. Connect the yellow wire from the camera to the video output of the DVR or NVR.

Step 5: Seal the Connections

Wrap electrical tape around all of the connections to protect them from moisture and interference. Make sure that the tape is applied tightly and evenly.

Step 6: Adjust the Camera Position

Mount the camera in the desired location and adjust its position using the adjustment screws on the camera's lens. Make sure that the camera is focused and the image is clear.

Troubleshooting Tips
If the camera is not receiving power, check the power supply connections.
If the video is blurry or distorted, check the video connections.
If the camera is not transmitting video, check the coax cables for damage.
If the camera is freezing or dropping frames, try using a higher quality coax cable or reducing the distance between the camera and the DVR/NVR.

Conclusion

Wiring a 4-wire analog camera is a relatively straightforward process. By following these step-by-step instructions, you can ensure a reliable and secure connection between the camera and the recorder. Proper wiring will result in a clear and stable video transmission, allowing you to effectively monitor your surveillance system.

2024-11-13

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