What is bnc connectors

Because it's resilient, durable and remarkably thin, it has been made to safeguard displays and touch screens without compromising the screen or adding bulkiness to the View Full Term.

By clicking sign up, you agree to receive emails from Techopedia and agree to our Terms of Use and Privacy Policy. A BNC connector connects various radio frequencies up to 3GHz and voltages under V DC and are used in electronic architectures such as audio, video and networking. BNC is also used in avionics and high grade analog communications test equipment due to its low-signal-loss architecture. Co-axial ethernet cabling is nearly always terminated with BNC connectors.

Its close-fitting connection uses a mount comparable to a knife bayonet that is attached onto the end of a rifle. One of the benefits of the BNC connector is its close-fitting connection. The connection is locked by the BNC male connector that has a pin that fits into the main conducting wire.

It is then secured in place with an external ring that turns to a locked position. Austin writes on health and well-being as well as linguistics and international travel, business, management and emerging technologies. Home Hardware. Author: Jonas Bergsten. Features Male type BNC connectors are attached to the ends of coaxial cables.

Writer Bio Sam N. The very basic BNC connector consists of a panel mounting assembly with a single connection for the coax centre. The earthing is then accomplished via the panel to which the connector is bolted using a single nut.

Large washers can be used to provide an earth connection directly to the connector. Some of these connectors may also use four nuts and bolts to fix them to the panel. These arrangements are only suitable for low frequency applications, and not for RF.

Where impedance matching and full screening is required. Bulkhead mounting connectors where coaxial cable entry is provided are available for this. Again these are available for a variety of cable dimensions and the correct type should be used. The assembly of a BNC connector will depend upon the type that is to be used. Both types require assembling wit reasonable care, and the crimp style requires a crimp tool for its assembly.

The compression gland type of BNC connector has the centre pin of the connector which is usually a solder pin and the braid and sheath of the cable are held by an expanding compression gland fixed by a nut at the rear of the connector. This type of connector by its nature can cope with a limited range of cable sizes and requires no specialised tooling to assemble. This makes it ideal for small quantity production, either for one off cables for laboratory use of for limited production runs.

The crimp BNC connector has the centre pin which is normally crimped to the centre conductor. This crimped pin is then pushed into position through an inner ferrule which separates the inner insulation sheath and the braid of the cable. An outer ferrule is then crimped over the braid and outer insulation which fixes the cable to the connector.

Greater accuracy is required for the crimp style connectors and therefore the correct connector variant must be chosen for the cable being used. This may result in a crimp style connector not being practicable for some cable types.

In addition to this the assembly requires the use of the correct crimping tools to ensure that the connector is correctly crimped. While these connectors are always preferred for large production runs because they are much faster to assemble, it is not possible for them to be reworked for obvious reasons. For both styles of BNC connector it is essential that the exact amount of insulation is stripped from each section to ensure accurate assembly and the required RF performance.

Finally a variety of BNC adapters and other ancillary items are available. One popular BNC adapter is the straight through adapter, allowing two cables with male connectors fitted to be connected end to end. Other "T" adapters are also available.