1, Understand the basic types of cables
Before choosing AISG cables, it is necessary to first understand the basic types of cables. According to the different transmission signals, AISG cables are mainly divided into the following categories:
Balanced cable: typically used to connect audio devices such as microphones, guitars, speakers, etc. The balanced cable adopts a three core design, with two wires used for signal transmission and one wire used for grounding. The advantage of this cable is its strong anti-interference ability, which can effectively suppress the interference of external noise.
Unbalanced cable: mainly used for short distance transmission of audio signals, such as headphone cables, small speaker cables, etc. Unbalanced cables only have one wire for signal transmission, and the other wire is not used. Due to weak anti-interference ability, it is usually only used for short distance transmission.
Digital cable: used for transmitting digital audio signals, such as HDMI, DisplayPort, etc. The advantages of digital cables are fast transmission speed and clear sound quality, but the price is relatively high.
2, Determine the specifications and parameters of the cable
When selecting AISG cable specifications, the following key parameters need to be considered:
Conductor cross-sectional area: The square of the wire is actually marked as the cross-sectional area of the wire, which is the area of the circular cross-section of the wire, measured in square millimeters. Users should choose wires and cables based on the load of the cables. Common cross-sectional areas of conductors include 0.5, 0.75, 1, 1.5, 2.5, 4, 6, 10, 16, 25, 35, 50, 70, 95, 120, 150, 185, 240, 300, 400, 500, 630, 800, 1000 square millimeters, etc.
Rated voltage: The general rated voltage for wires and control cables is 300/300V, 300/500V, 450/750V; The rated voltage of medium and low voltage power cables generally includes 0.6/1kv, 1.8/3kv, 3.6/6kv, 6/6 (10) KV, 8.7/10 (15) KV, 12/20kv, 18/20 (30) kv, 21/35kv, 26/35kv, etc.
Core count: The number of cores in a cable is determined according to actual needs. Generally, power cables have 1, 2, 3, 4, and 5 cores, wires have 1 to 5 cores, and control cables have 1 to 61 cores.
Impedance: The two main impedances used for coaxial cables are 75 ohms and 50 ohms, respectively. 75 ohm cables are typically used for video applications, while 50 ohm cables are more commonly used for data and wireless purposes.
Attenuation and power processing capability: The attenuation of coaxial cables represents the energy loss per unit length of cable. For applications with extremely low signal power or long wiring requirements, and without amplifiers or signal amplifiers, low loss cables may be required.
3, Consider practical application scenarios
When selecting AISG cable specifications, practical application scenarios should also be considered, including the following aspects:
Signal quality: Understand the quality of the signal that the cable needs to carry, including frequency range and power level of the transmitted signal.
Wiring length and difficulty: Choose the appropriate cable specifications based on the wiring length and difficulty to ensure the stability and reliability of signal transmission.
Environmental factors: Consider the environment in which the cable is located, such as temperature, humidity, electromagnetic interference, etc., and choose cables with corresponding protective measures.
Budget and institutional requirements: Project budget and all institutional requirements also play an important role in decision-making. It is necessary to ensure that the selected cables comply with relevant standards and regulations.
4, Choose high-quality suppliers
When selecting AISG cables, priority should be given to qualified suppliers with good historical records and a quality management system. Avoid using illegally sold counterfeit cables to ensure the safety of operators and equipment.
5, Example analysis
Taking the antenna connection of a certain base station as an example, suppose it is necessary to select an AISG cable for connecting the antenna and the base station equipment. Firstly, determine the rated voltage and conductor cross-sectional area of the cable based on the power of the antenna and signal transmission requirements. Then, choose the appropriate cable type (such as coaxial cable or balanced cable) based on the length and difficulty of the wiring. Finally, considering environmental factors and budget requirements, select high-quality cables with corresponding protective measures.
