Guide: How to Wire A BNC Connector

In this guiding article, the instruction of how to wire a BNC connector will be clarified and illustrated in mainly three steps. Generally speaking, there are two main wiring methods for BNC connectors: direct wiring and indirect wiring. However, direct welding method is relatively simple, but once the connection is poor it is difficult to repair; the indirect welding rule is relatively complex, but it can be easily replaced by BNC connectors or coaxial cables. In practical application, the appropriate method can be selected according to the specific situation. And the following instruction is the method of direct wiring.

Quick Instruction To Wire a BNC Connector

In this part, a quick instruction of how to wire a BNC connector will be introduced, hoping to help you solve your connecting problems. The following section is about the wiring steps for BNC connectors. If you are not familiar with welding techniques, it is recommended to seek professional help to avoid damaging equipment and cables.

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Preparation For Effective Connection

The structure of BNC connector mainly includes three parts: BNC connector body, shielded metal sleeve and core wire pin. Before the wiring connection, there is a need to prepare the relevant materials and tools for the following assembly process as listed below:

BNC connectors, wires, pliers, wire strippers, welding tools (e.g. soldering iron and solder), and testing equipment (e.g. multi-meter).

The Assembly Process Of BNC Connector

BNC connector is a commonly used coaxial cable connector in a variety of electronic devices, such as surveillance cameras, televisions, etc. The following are detailed steps to help you properly wire BNC connectors.

Strip the Cable

Use a wire stripper to peel a section of the cable, the length is about 1.5 cm. There is a layer of plastic wrap on the outside of the peeled video cable, and you need to use the copper wire inside. Then, peel off the rubber, which can be assisted by a blade. After peeling off the outer white hard rubber, the copper wire will be exposed.

Install the BNC connector

Next, insert the BNC connector into the port of the wire and use pliers to secure the outer metal housing. This process requires attention to the orientation of the BNC joint.

Connect The Core

Insert the core wire into the small hole at the end of the core wire pin and clamp the core wire firmly with the small slot at the front of the special cable clamp to press the core wire into the small hole. You can use an electric soldering iron to weld the core wire and the core pin. Insert a little rosin powder or neutral flux into the small hole at the end of the core wire pin before welding. Do not leak solder on the outer surface of the core wire pin during welding.

Assemble the BNC connector

After connecting the core wires, insert the shielding metal sleeve into the coaxial cable, insert the core wire pins forward through the hole at the tail of the BNC connector body. Then, push the metal sleeve forward to clamp the outer metal shielding wire to the cylinder at the tail of the BNC connector.

Test Connection

Use the test instrument to check the signal quality and ensure the stability of the connection.

All the above are the main steps of connecting the BNC connector. In the process of operation, we must pay attention to safety to avoid electric shock or other accidents.

Attention For Wiring A BNC Connector

In this section, some cautions during the connection of BNC connector will be listed as follows, please follow these tips to avoid accidents and damages.

Make sure you have chosen the right tools, including wire strippers, welding tools (such as soldering irons and solder), etc.

Remember to keep it clean before wiring, all metal surfaces should be clean and grease-free. It can be achieved by using alcohol or other cleaning agents.

Proper temperature control. Too high a welding temperature may cause metal deformation or burns, while too low a temperature may not be able to complete the welding. What’s more, excessive welding time may lead to overheating of the metal, thus the wiring time should be shortened as much as possible.

Is BNC Analog or Digital

BNC cables may carry both analog and digital signals. BNC cables were originally designed for analog video transmission, but they have also shown to be capable of handling digital signals.
They can efficiently carry high-bandwidth signals, making them ideal for high-resolution video standards like SDI (Serial Digital Interface) and HD-SDI.

Is BNC Cable the Same as Coaxial Cable

BNC and coaxial cables are closely related but not the same. 
BNC cables are coaxial cables with BNC connectors at the ends. The BNC connector employs a bayonet coupling mechanism to offer a rapid and secure connection. 
Coaxial cables, are a larger group of cables that employ a number of connectors, such as BNC, F-type, and RCA. 
Though BNC cables are a form of coaxial cable, not all coaxial cables include BNC connections.Final Verdict

All the above are some of the instructions and details that need to be paid attention to when wiring BNC connectors, hoping this guide How to Wire a BNC Connector will help you to connect you BNC connector successfully.