How to Connect BNC to 3.5mm for CCTV Audio Video

Quick answer

To connect BNC to 3.5mm for CCTV audio video, use a BNC female to 3.5mm jack male cable to link BNC-output equipment like DVRs or cameras to devices with a 3.5mm input, such as monitors or audio recorders.

Steps to connect BNC to 3.5mm

1. Identify the signal type: Determine whether you're connecting video or audio. BNC cables in CCTV typically carry video, but some setups use BNC for audio. Check your device labels to avoid mismatching. If unsure, test with a known working signal source first.
2. Connect the BNC female end: Plug the BNC female connector onto the BNC male plug from your camera or DVR. Twist the BNC connector to lock it securely; a loose connection can cause signal loss. Ensure the BNC connector clicks or twists into place, not just pushed on.
3. Connect the 3.5mm jack: Insert the 3.5mm male jack into the device's 3.5mm input (e.g., monitor, audio recorder, or capture card). Push firmly until it clicks, and avoid bending the cable at the connector. If no signal appears, try a different 3.5mm input port on your device.
4. Verify the connection: Power on your equipment and check for a clear picture or audio. If the signal is weak or absent, reseat both connectors and ensure the cable is not damaged. Use a short, high-quality cable to minimize signal degradation over longer runs.

Product facts

• BNC Female to 3.5mm Jack Male Cable CCTV Audio Video Adapter Lead: This BNC female to 3.5mm jack male cable connects BNC-output equipment to devices with a 3.5mm input, commonly used in CCTV systems and surveillance installations. It lets you hook up a security camera or DVR to a monitor or recorder that only has a 3.5mm input, expanding your equipment options without replacing hardware.