Installation method of L9 head DDF digital distribution frame

Installation method of L9 head DDF digital distribution frame

Installation method of L9 head DDF digital distribution frame With the rapid development of optical fiber transmission network and access network communication, the capacity of digital distribution is rising accordingly. The traditional and cumbersome structure can no longer meet the needs of the new situation. Now our company has introduced a new type of digital distribution frame with multi hole posts. Compared with traditional products, the structure is more standardized and unified under the same requirements of YD/T1437-2006 standard, It is simpler, faster and more convenient for production, construction, installation, operation and maintenance. Adopt highly standardized, advanced and self attack only screw The installable three sided perforated vertical column, horizontal column and side column, with a hole spacing of 25mm, can rotate freely according to the user's operation needs, and has a perfect grounding system.

CT-MPX09 digital distribution frame, DDF digital distribution frame: 8 system DDF digital distribution frame, 10 system DDF digital distribution frame, 16 system DDF digital distribution frame, 20 system DDF digital distribution frame, 21 system DDF digital distribution frame

BNC digital distribution frame: 8 system BNC digital distribution frame, 10 system BNC digital distribution frame, 16 system BNC digital distribution frame, 20 system BNC digital distribution frame, 21 system BNC digital distribution frame

west door Sub digital distribution frame: Siemens 8 system digital distribution frame, Siemens 10 system digital distribution frame, Siemens 16 system digital distribution frame, Siemens 20 system digital distribution frame, Siemens 21 system digital distribution frame

Overview of DDF products:

The structure design, material selection surface treatment Processing technology key Many aspects such as process have their own unique experience. The product performance is stable and reliable. It is widely used in China's primary and secondary lines. The production capacity reaches 10000 units/unit per year, and more than 30000 systems are used online.

Product features:

1. Numerous series: Siemens, Ericsson, AT&T, Fujitsu, NEC and other systems; 75, 120 ohm and other different impedance series, various cabinet frames and other combinations for customers to choose from;

2. Performance: strict structural design, high-quality metal Metallic materials Standard gold plating and exquisite and strict process ensure stable and reliable product performance;

3. Management: The complete and scientific cable structure, whether in the middle, on both sides, front and back jumpers, and between rack jumpers, is more consistent with your use habits, and the operation is more convenient;

4. Details: complete grounding system, various fixing methods, 90 degree rotating unit and other detailed designs ensure more convenient use by customers.

Technical indicators:

1. Environmental requirements:

1) Operating temperature: - 5 ℃~40 ℃

2) Storage temperature: - 25 ℃~55 ℃

3) Working relative humidity: ≤ 85% (30 ℃)

4) Storage relative humidity: ≤ 75%

5) Atmospheric pressure: 70KPa ～ 106Kpa

2. Equipment rack:

1) Rack height: 2000mm, 2200mm, 2600mm

2) Rack material: aluminum profile

3) Cable entry mode: upper cable entry, lower cable entry

4) Operation mode: full front operation

5) Frame color: Century Yellow, Telecom Grey

6) Grounding mode: copper bar

3. Coaxial connector:

1) Characteristic impedance: 75 Ω

2) Operating rate: 2Mb/s, 8 Mb/s, 34 Mb/s, 140 Mb/s, 155 Mb/s (except for some systems)

3) Insulation resistance:>1000M Ω (500VDC)

4) Dielectric strength: ≥ 1000V (50HzAC)/min, no breakdown, no flashover

5) Contact resistance: outer conductor ≤ 2.5m Ω (crimping), inner conductor ≤ 10m Ω

6) Insertion loss: ≤ 0.3dB (50KHz-233MHz)

7) Return loss: ≥ 18dB (50KHz-233MHz)

8) Defense degree of crosstalk between return lines: ≥ 70dB (50KHz-233MHz)

9) Pull off force:>50

10) Connector life: ≥ 1000 times

11) Material: brass, beryllium bronze

12) Gold plating thickness of coaxial connector: ≥ 2um