The different pitch of each pair of wires is used to distinguish the magnetic field effect of each pair of wires in the transmission process and reduce the influence between adjacent pairs of wires.
1. Short circuit fault caused by insulation damage
When the power cable is laid, the protective layer is damaged or the cable insulation is mechanically damaged during operation, resulting in the bre
In multimode fiber, the core diameter is 50 μm and 62.5 μm, roughly the thickness of a human hair. The diameter of single-mode fiber core is 8μm~10μm, and 9/125μm is commonly used. The core is surroun
Audio coaxial cable: its connectors are divided into RCA and BNC. Coaxial audio is an audio interface with both input and output functions. Unlike previous audio interfaces, it integrates a microphone
In the past, the oil industry was only able to extract oil and gas reserves using existing technology, often failing to meet the need to invest in rapid recovery and maximize oil and gas recovery, res
Optical fiber construction method
In practice, optical fibers are connected in two ways: hot fusion and cold connection.
One day in 1870, The British physicist Tyndall came to the Lecture hall of the Royal Society in Britain to speak about the principle of total reflection of light. He did a simple experiment: he drille
The coaxial cable is a guiding system composed of two coaxial cylindrical conductors, a broadband microwave transmission line filled with air or high-frequency medium between the inner and outer condu
1. Identify the stretchability of the skin
From the outside of the network cable, the network cable pairs are basically twisted into regular threads, while the outer skin of the inferior network ca
After both ends of the crystal head are ready, you can use the network cable tester to test. If the eight indicator lights on the tester are flashing green in turn, it proves that the network cable is