Digital distribution frame, also known as high-frequency distribution frame, has more and more advantages in digital communication. It can make the connection of digital code stream of digital communication equipment become a whole, and the input and output of signals from 2Mb/s to 155Mb/s can be terminated on the DDF frame, which brings great flexibility and convenience for wiring, wire adjustment, switching, and capacity expansion. The rack of digital distribution frame adopts special Aluminum profile It is made of materials with high strength, light weight and beautiful appearance. The unit structure is adopted, and the configuration and installation are flexible and convenient. The rack is a narrow rack structure with enough space for wiring and wire storage, Cable The wiring is clear and beautiful. Distribution function: the same speed, the same impedance, the same direction, and the connection mode of communication link between receiving and sending on the digital distribution frame. Jumper function: same speed, same impedance, same direction, and interconnection between any receiver and any transmitter on the digital distribution frame. Transfer function: same speed, same impedance, different directions, interconnection between any receiver and any transmitter on the digital distribution frame.
Test function: clear line sequence, convenient for detection or self loop test. Pull off force: after the coaxial connector is connected with the cable, the anti cable tensile force shall be greater than 50N; Mechanical durability: after the coaxial connector is inserted and pulled for 1000 times, it shall comply with the provisions of industry standards 2.3.1.3, 2.3.1.7, 2.3.1.8, 2.4.2, 2.4.3 and 6.2, and the contact surface shall still have an electrodeposited coating, and the base material shall not be exposed; The materials used for all parts of the digital distribution frame shall have anti-corrosion performance. If there is no anti-corrosion performance, anti-corrosion treatment shall be carried out; Its physical and chemical properties must be stable; Various materials must be compatible; All non digital distribution frames Metallic materials The combustion performance of structural parts shall meet the requirements of Test A in GB/T5169.7-1985; The conductor elastic material shall be beryllium bronze and tin bronze; The contact area of the inner and outer conductors of the coaxial connector shall be coated with an intermediate layer (transition layer) first.
The thickness of gold cobalt alloy shall be plated again. Network cabinet is used to combine installation panels, plug-ins, plug-in boxes, electronic components, devices and * * parts and components to form an integrated installation box. According to the current types, there are server cabinets Wall mounted Cabinet, network cabinet, standard cabinet, intelligent protection outdoor cabinet, etc. The capacity value is between 2U and 42U. Simple structure, convenient operation and installation, exquisite workmanship, accurate size, network cabinet consists of frame and cover plate（ door ）Composition, generally having the shape of a cuboid, placed on the ground. It provides suitable environment and safety protection for normal operation of electronic equipment. This is the first level assembly next to the system level. Cabinet without closed structure is called rack. Network cabinet shall have good technical performance. The structure of the cabinet shall be subject to necessary physical and chemical design according to the electrical, * * performance and use environment requirements of the equipment, so as to ensure that the structure of the cabinet has good rigidity and strength as well as good electromagnetic isolation, grounding, noise isolation, ventilation and heat dissipation and other performances.
