How to Wire BNC Connectors

A Bayonet Neill-Concelman (BNC) connector is used to connect coaxial cable to various devices. It's most commonly used for connecting thin Ethernet networks and it may also be used for consumer electronic devices. A BNC connector will be paired with a separate part called the crimp ferrule. You'll need a BNC crimping tool with a cable stripper to perform this procedure.

Things You'll Need

• Coaxial cable
• BNC crimper/stripper
• Crimp ferrule
• BNC connector

Instructions

1. Trim one end of the coaxial cable with the cable stripper. Ensure the cut is clean and at a right angle to the cable. Slide the crimp ferrule onto the end of the cable and push it down the length of the cable so that it's out of the way.

2. Strip the last 5/16 inch of the outer sheath from the trimmed end of the cable. Ensure you don't cut any of the other layers of the cable. Peel the exposed copper braid over the outer sheath so that it lies flat against the sheath.

3. Cut ¼ inch of the inner sheath from the end of the coaxial cable, using care not to cut the inner copper core. Trim the end of the exposed copper core at a 45 degree angle, but only remove a minimum amount of the copper core.

4. Insert the BNC connector onto the prepared end of the coaxial cable as far as it will go. The outer sheath of the coaxial should now be firmly against the BNC connector. Pull the exposed copper braiding back over the outer surface of BNC connector. Ensure the BNC connector remains firmly seated against the outer sheath as you do this.

5. Bring the crimp ferrule back up the cable and push firmly over the BNC connector as far as it will go without dislodging the BNC connector. Place the BNC connector and ferrule into the socket on the BNC crimping tool and firmly squeeze its handles together. This should force the BNC connector into a hex shape with a diameter of 0.32 inches.

References

• Learning Center