What Is a BNC Connector?

BNC connector (English: Bayonet Neill-Concelman, literally translated as "Niel-Concelman bayonet") is a very common RF terminal coaxial cable terminator. The BNC cable connector consists of a center pin, a jacket, and a card holder. It includes BNC connector base, jacket and probe. The BNC connector is named after its locking method and its inventor, Paul Neal of Bell Labs (invented the N-terminal) and Amphenol engineer Carl Conceman (invented the C-terminal). The BNC cable connector must be connected to each end of the cable.

BNC connector (English: Bayonet Neill-Concelman, literally translated as "Niel-Concelman bayonet") is a very common RF terminal coaxial cable terminator. The BNC cable connector consists of a center pin, a jacket, and a card holder. It includes BNC connector base, jacket and probe. BNC connector named after its locking method and its inventor Bell Labs

BNC

1. From the surface of the product, it is better to have a bright and delicate coating. The higher the purity of copper, the brighter it is. Some products are bright outside but they are iron.

2. Absorbent stone adsorption test. Generally, only bayonet springs and tail springs are made of ferrous material; clips, pins and sleeves are made of copper, and other parts are made of zinc alloy.

3. Scraping the surface coating to see the material: Use a blade and other sharp tools to scrape the surface of the coating to see the material intuitively. By scraping the clamps, pins, and shielding sleeves, you can directly compare the material of the product.

4. In addition to the above methods, you can also prepare a good quality female head to try ^[1]

BNC connectors are very similar to B and C terminals. A threaded connector TNC (Threaded Neill-Concelman) has better performance in the microwave band than BNC.

BNC connectors are available in 50 and 75 ohm versions.

When the 50 ohm connector is connected to other impedance cables, the possibility of transmission errors is less. Different versions of the connectors are compatible with each other, but if the cable impedance is different, the signal may be reflected. Generally BNC connectors can be used at 4GHz or 2GHz.

75 ohm connectors are used for video and DS3 connections to the telephone company's central office, while 50 ohm connectors are used for data and radio frequency transmission. A 50 ohm plug incorrectly connected to a 75 ohm socket may damage the socket. 75 ohm connectors are used in VHF applications.

BNC connectors are used for the transmission of radio frequency signals, including the transmission of analog or digital video signals, the connection of amateur radio equipment antennas, the connection of avionics and other electronic test equipment. In the field of consumer electronics, the BNC connector for video signal transmission has been replaced by an RCA terminal. With a simple adapter, the RCA terminal can be used on devices that have only BNC connectors.

BNC terminals have been widely used in 10base2 Ethernet. Since coaxial cables are replaced by twisted pair cables, it is difficult to see network cards with BNC terminals. Coaxial cables terminated by some ARCNET networks with BNC terminals ^[1]

BNC connectors are commonly used in NIM, but have been replaced by the smaller LEMO 00. In high voltage situations, MHV connectors and SHV connectors are more common. MHV connectors can be forcibly connected to BNC connectors. SHV is a more secure connector developed because of this, it cannot be connected with ordinary BNC connectors.

In the former Soviet Union, BNC connectors were copied as SR-50 (Russian: -50) and SR-75 (-75) connectors. Due to the transition from imperial to metric, these connectors are different from BNC, but can be forced to connect. The dual plug BNC (also known as dual axis BNC) connection uses the same knife-locked housing as the BNC, but contains two independent contact points (a pair of plug sockets), allowing connection of 78 ohm or 95 ohm differential pairs, such as RG- 108A.

They can run at 100GHz and 100V. The dual BNC connector is not compatible with ordinary BNC connectors. Three-axis BNC (also known as TRB) connects signals, shields, and ground simultaneously. It is used in sensitive electronic measurement systems, and cannot be used directly with BNC ordinary connectors, but can be connected to ordinary BNC connectors through adapters ^[1] .