How to Select the Right Double Shielded Coaxial Cable for Your Application

Double shielded coaxial cable is a type of electrical cable that is used to transmit data from one device to another. It consists of a central conductor, an insulator, and two layers of shielding. The outer layer of shielding is usually made of copper, while the inner layer of shielding is usually made of aluminum or tinned copper. Double shielded coaxial cable is designed to provide added protection from electromagnetic interference (EMI) and radio frequency interference (RFI).

Considerations for Selecting Double Shielded Coaxial Cable

When selecting double shielded coaxial cable, there are a number of factors to consider, including:

Cable Type

There are two main types of double shielded coaxial cable: RG-6 and RG-11. RG-6 cable is the most common type of coaxial cable used in residential applications. It is less expensive than RG-11 cable, but it has a lower bandwidth and is not as resistant to EMI and RFI. RG-11 cable is more expensive than RG-6 cable, but it has a higher bandwidth and is more resistant to EMI and RFI.

Length

The length of the cable is also an important consideration. The longer the cable, the greater the loss of signal strength. For applications where long distances are involved, it is important to use a cable with a low loss rating.

Connectors

The type of connectors on the cable is also important. The most common type of connector for double shielded coaxial cable is the F-connector. F-connectors are easy to install and are relatively inexpensive. However, they are not as secure as other types of connectors, such as BNC connectors. BNC connectors are more secure than F-connectors, but they are also more expensive and more difficult to install.

Impedance

The impedance of the cable is also important. Impedance is a measure of how well the cable matches the impedance of the devices that it is connected to. The impedance of most double shielded coaxial cable is 75 ohms. However, there are also cables with impedances of 50 ohms and 93 ohms. It is important to use a cable with the correct impedance for the application.

Double shielded coaxial cable is a versatile type of electrical cable that is used in a wide variety of applications. When selecting double shielded coaxial cable, it is important to consider the cable type, length, connectors, and impedance. By considering these factors, you can choose the right cable for your application.