Function of digital distribution frame mechanical

2022-07-22
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Digital distribution frame is also known as high-frequency distribution frame. Digital distribution frame is an important electronic spare part. Digital distribution frame has a variety of types, powerful functions and wide range of applications, especially playing an important role in optical cable communication. Of course, digital distribution frame also plays an important role in other fields. Next, I will introduce the function of digital distribution frame and its mechanical performance

digital distribution frame is also known as high-frequency distribution frame. Digital distribution frame is an important electronic spare part. Digital distribution frame has various types, powerful functions and wide range of applications, especially playing an important role in optical cable communication. Of course, digital distribution frame also plays an important role in other fields. Next, I will introduce the function of digital distribution frame and its mechanical performance

function of digital distribution frame

digital distribution frame is the connecting equipment between digital multiplexing equipment (or between digital multiplexing equipment and program-controlled switching equipment), which plays the roles of wiring, wire adjustment, transfer, monitoring, etc. The frame of digital distribution frame is made of special aluminum profile 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 frame structure, with enough wiring and wire storage space, and the cable routing is clear and beautiful

advantages of digital distribution frame

the frame of digital distribution frame adopts special aluminum profile as material, 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 frame structure, with enough wiring and wire storage space, and the cable routing is clear and beautiful

mechanical properties of digital distribution frame

1. Pull off force: after the coaxial connector is connected with the cable, the tensile force of the cable should be greater than 50N

2. Mechanical durability: after plugging in and out of the coaxial connector for 1000 times, it shall comply with the provisions of line 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 is still electroplated, and the base material shall not be exposed

3. The materials used for all parts of the digital distribution frame should have anti-corrosion performance. If there is no anti-corrosion performance, anti-corrosion treatment should be done; Its physical and chemical properties must be stable; All materials must be compatible

4. The combustion performance of all non-metallic structural parts of digital distribution frame shall meet the requirements of test a in gb/t5169.7-1985 standard

5. Beryllium bronze and tin bronze shall be used as the elastic material of conductor

6. The contact area of the inner and outer conductors of the coaxial connector should be plated with an intermediate layer (transition layer) first, and then with a thickness of gold cobalt alloy

electrical performance of digital distribution frame

1. Working rate: 2mbit/s, 8mbit/s, 34mbit/s, 45mbit/s, 140mbit/s, 155mbit/s

2. Characteristic impedance: 75ω (nominal value)

3. Contact resistance of coaxial connector; The outer conductor is not more than 2.5mω, After mechanical durability test, its value-added is not more than 2.5mω; The inner conductor is not more than 10mω, After the mechanical durability test, its value-added is not more than 10m&omega

4. Insulation resistance: the insulation resistance between the inner and outer conductors of the connector and between the inner conductor and the metal parts of the unit board shall be greater than 1000mω, The DC voltage of the measuring circuit is 500v± 50V。

5. Voltage withstand: between the inner and outer conductors of the connector, between the inner conductor and the metal parts of the unit plate, it shall be able to withstand the AC voltage with a frequency of 50Hz and an effective value of 1000V for 1min without breakdown and flashover

6. Crosstalk defense between loops: no less than 70dB (50KHz ~ 233MHz)

7. Intervention loss: no more than 0.3dB (50KHz ~ 233MHz)

8. Return loss: no less than 18db (50KHz ~ 233MHz)

editor's summary: This is the introduction of the role of digital distribution frames and the mechanical properties of digital distribution frames. I hope it will be helpful to you. If you want to know more about it, you can pay attention to the information

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