What is the difference between a communication cable and a shielded cable?

　　Communication lines and shielded wires are significantly different in many ways. Here is a detailed comparison analysis:

　　I. Definition and purpose

　　Communication line

　　Definition: A communication cable is a type of wire specifically used to tranSMit signals, typically used in communication equipment such as computers, telephones, televisions, and data transmission lines.

　　Purpose: Transmission of high-speed digital signals, analog signals, and other data signals, widely used in various communication equipment and data transmission systems.

　　shielded wire

　　Definition: A shielded wire is a conductor (ie, a shielding layer) that wraps the outside of a cable or wire to suppress interference to reduce or suppress electromagnetic interference entering the line and improve the quality of the transmitted signal.

　　Purpose: Mainly used in fields that require high signal transmission quality, such as audio, video, and high-speed digital signal transmission, to reduce interference and improve the stability of transmission signals.

　　II. Structure and characteristics

　　Communication line

　　Structure: It typically consists of two or more insulated wires, and the conductors are made of high-purity copper wires with good electrical conductivity, corrosion resistance, and heat resistance.

　　Features: Transmission quality directly affects the stability and reliability of the signal, and high-strength insulating materials are usually used to avoid interference and signal loss.

　　shielded wire

　　Structure: The shielding layer is usually wrapped around the signal line by a metal mesh braid (such as red copper or tinned copper), and the shielding layer needs to be grounded to introduce external interference signals.

　　Features: It has the function of preventing the line from radiating electromagnetic energy outward, and can isolate the external electromagnetic field to prevent the information in the communication line from being stolen or interfered with.

　　III. Application scenarios and requirements

　　Communication line

　　Application scenarios: Suitable for a variety of communication equipment and data transmission systems, such as telephone lines, network cables, etc.

　　Requirements: It has good electrical conductivity and anti-interference to meet the stability and reliability requirements of data transmission.

　　shielded wire

　　Application scenarios: Mainly used in environments with strong electromagnetic interference, such as hospitals, factories, and other places with strong electromagnetic radiation or with a large number of strong electrical equipment.

　　Requirements: The shielding layer needs to be properly grounded to avoid signal loss caused by current problems caused by incorrect grounding. At the same time, the wiring requirements of the shielded wire are higher, and the accessories in the system need to be shielded.

　　IV. Other differences

　　Appearance and logo

　　Communication lines usually have no obvious shielding layer and are relatively simple in appearance.

　　The shielded wire has an obvious metal mesh braid or aluminum foil shielding layer, which makes the appearance more complex.

　　Price and cost

　　Communication lines are usually cheaper and cost less.

　　Due to the additional shielding layer and grounding requirements, shielded wires are more expensive and cost-effective.

　　In summary, there are obvious differences between communication wires and shielded wires in terms of definition and use, structure and characteristics, application scenarios and requirements, and other differences. In practical applications, the appropriate wire type should be selected according to the specific environment and application requirements to ensure the stability and integrity of the communication signal.