The digital distribution frame is also called high-frequency distribution frame. The digital distribution frame is an important electronic component. The types of digital distribution frames are more diverse, powerful, and have a wide range of uses, especially playing an important role in optical fiber cable communication. . Of course, digital distribution frames also play an important role in other fields. Next, Xiao Bian introduced the function of the digital distribution frame and the mechanical properties of the digital distribution frame.
Digital distribution frame effect
The digital distribution frame is the connection device between the digital multiplexing equipment (or between the digital multiplexing equipment and the program-controlled switching equipment), and it plays a role in wiring, line adjustment, switching, monitoring and the like. The frame of the digital distribution frame uses special aluminum profiles as materials, high strength, light weight and beautiful appearance. With the unit structure, the configuration and installation are flexible and convenient. The rack is a narrow rack structure with enough wiring and storage space, and the cables are clear and beautiful.
Digital Distribution Frame Benefits
The frame of the digital distribution frame uses special aluminum profiles as materials, high strength, light weight and beautiful appearance. With the unit structure, the configuration and installation are flexible and convenient. The rack is a narrow rack structure with enough wiring and storage space, and the cables are clear and beautiful.
Digital Distribution Frame Mechanical Properties
1. Pull-off force: After the coaxial connector is connected with the cable, the tensile resistance of the cable should be greater than 50N;
2. Mechanical durability: After the coaxial connector is plugged and unplugged 1000 times, it shall meet the requirements of the regulations 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 is still plated Layers shall not expose substrate material;
3. The materials adopted for all parts of the digital distribution frame shall have anti-corrosion performance, and if there is no anti-corrosion performance, anti-corrosion treatment shall be done; the physical and chemical properties must be stable; all materials must be compatible;
4. The burning performance of all non-metal structural parts of the digital distribution frame shall meet the requirements of test A in GB/T5169.7-1985 standard;
5, conductor elastic material should be used bronze, tin bronze;
6. The contact area between the inner and outer conductors of the coaxial connector should be plated with an intermediate layer (transition layer) and then plated with a thick gold-cobalt alloy.
Digital Distribution Frame Electrical Performance
1, the working rate: 2Mbit/s, 8Mbit/s, 34Mbit/s, 45Mbit/s, 140Mbit/s, 155Mbit/s;
2. Characteristic impedance: 75Ω (nominal value).
3, coaxial connector contact resistance; outer conductor is less than 2.5mΩ, the value of the mechanical durability after the experiment is not greater than 2.5mΩ; inner conductor is not greater than 10mΩ, after the mechanical durability test value of not more than 10mΩ.
4. Insulation resistance: The insulation resistance between the inner conductor and the outer conductor of the connector, between the inner conductor and the metal part of the cell plate should be greater than 1000MΩ, and the DC voltage of the measurement circuit is 500V±50V.
5. Withstanding voltage: Between the inner conductor and the outer conductor of the connector, and between the inner conductor and the metal part of the cell plate, one should be able to withstand the effect of a frequency of 50Hz and an effective value of 1000V AC voltage for 1 minute without breakdown or arcing.
6, crosstalk between the loop defense degree: not less than 70dB (50kHz ~ 233MHz)
7, insertion loss: not more than 0.3dB (50kHz ~ 233MHz)
8, return loss: not less than 18dB (50kHz ~ 233MHz)
Editor's summary: The role of the digital distribution frame and the mechanical properties of the digital distribution frame were introduced here, and we hope to help everyone. If you want to know more related information, you can pay attention to this website information.
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