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How to Wire BNC Connectors

[Posted: 2010-7-9]

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.
Here is the introduction for the Three most common BNC Connectors.

Things You'll Need:
· Coaxial cable
· BNC crimper/stripper
· Crimp ferrule
· BNC connector

BNC Twist on Connector
BNC twist on connector
1. Trim cable as shown, taking care not to nick the center conductoror outer braid.
2. Twist the outer braid in a clockwise direction in such a manner that at least 1/32” of the inner dielectric is bared, and the braid isleft flat. (Stray or loose braid can cause shorts).
3. Gently insert the center conductor down into the back end of theconnector, feeling it into the guide hole. When the center conductoris not in place approx. 1/8” of center conductor will show.
4. Firmly push the cable home as far as possible. Then screw the connector on the cable in a clockwise direction until it stops.

BNC Crimp on Connector-2 Pcs
BNC crimp on connector
1. Run crimp sleeve down cable.
2. Trim cable as shown. Taking care not to nick the center conductoror outer braid
3. Gently insert the center conductor into the guide hole, in the rear of the connector, and firmly push the cable home.
4. Push crimp sleeve into place. Sandwiching the braid between theconnector and sleeve.
5. Crimp the sleeve into place with the proper crimp tool.

BNC Crimp on Connector- 3 Pcs
BNC crimp on connector
1. Trim cable as shown. Taking care not to nick the center conductor or outer braid.
2. Slip crimp sleeve over cable. Place inner conductor into contact, note that the end of the contact and inner dielectric must be butting and square. Crimp with proper crimp tool.
3. Flair outer braid, and gently but firmly push the contact into the connector housing until a gentle snap is felt. Indicating the contact is in place. Slip the crimp sleeve in place, butting the flange against the connector body, and crimp with proper tooling.


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