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The use of shielded cables in security systems provides some protection from power frequency and radio frequency interference, reducing the number of false alarms being generated. The best practice is to keep data or signal cables physically separated by at least 3 inches (75mm) from 'heavy' power circuits which are in parallel.
Cable with shielding is known as shielded twisted pair (STP) ... UTP is now used in some video applications, primarily in security cameras. [6]
Cross-section through a coaxial cable showing shielding and other layers. One example is a shielded cable, which has electromagnetic shielding in the form of a wire mesh surrounding an inner core conductor. The shielding impedes the escape of any signal from the core conductor, and also prevents signals from being added to the core conductor.
The GMSL link provides camera power, camera control, fault reporting and video transport across a single, coaxial cable. ADAS systems are considered safety-critical systems , and typically have an Automotive Safety Integrity Level (ASIL) rating, specified according to the ISO 26262 standard.
The cameras are used to record details such as gender, age, and ethnicity. Cameras have been used in a southern Chinese city to issue tickets to people for infractions. [85] In India, the cities of Hyderabad and Delhi, the capital, have around 900,000 and 450,000 cameras, respectively. [83]
The U.S. and NATO Tempest standards, and similar standards in other countries, include Faraday cages as part of a broader effort to provide emission security for computers. Automobile and airplane passenger compartments are essentially Faraday cages, protecting passengers from electric charges, such as lightning.
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