How to organize the fiber jumpers in the cabinet
1 Steps for skipping content:
The first step: identify the light and the room, find the splitter.
Step 2: Identify the splitter number.
Step 3: Find the splitter port configured on the work order.
Step 4: Find the port of the cable core of the access user.
Step 5: Jump from the splitter port to the user cable port.
2 Basic knowledge and specifications of fiber jumper:
1) The fiber-optic operation must meet the principles of ODF frame, light communication, tidy inside the integrated box, beautiful wiring, easy operation, and less space.
2) The length of the jumper must be within the range of 500mm.
3) Jumpers of insufficient length shall not be used. It is not allowed to use flanges to connect two jumpers.
4) Each jumper should ensure that the radius of curvature is greater than 400mm.
5) General requirements for fiber removal:
1 For the fiber on the upper line, the cable should be off the outside of the ODF frame. Select the most suitable fiber column for the remaining fiber volume, and move the fiber upwards on the inside of the ODF frame. The horizontal edge is on the lower edge of the ODM and is perpendicular to the corresponding terminal.
2 One jumper is only allowed to go up once in the ODF frame (along the outside of the ODF frame), once on the side (along the inside of the ODF frame), and take a fiber column. It is forbidden to entangle, cross and hang between the multiple fiber columns. That is, there must be no filament winding on the upper edge of each disc.
3 The specific situation of the site should be stipulated after the initial preparation of the jumper.
4 All jumpers must be placed in the ODF frame. It is strictly forbidden to deploy outside the aircraft and fly the line.
5 The super long jump fiber for emergency use shall be hung on the inner fiber disc according to the rules, and shall not affect the future fiber jump.
3 Jumper type and length control
1) Select the corresponding SC-SCfiber jumper, FC-FCfiber jumper, SC-FCfiber jumper according to the flange head on the splitter and the splitter box.
2) The fiber jumper from the splitter to the user table, the length of the length is controlled within 50CM, and the pigtails of 1m, 2m, 2m5, 3m are generally selected.
3) The ONU and the fiber terminal jumper in the user terminal box generally use 50CM short pigtail.
4 Jumper label management and specification
1) All jumper labels must be labeled with the machine and no handwriting is allowed.
2) In the machine room, light communication, and corridor, the fiber-optic to the user’s leather cable must be attached to both ends of the fiber-optic cable.
3) The effect after completion is uniform specification length, according to the gap of the terminal position, the labels are not staggered.
4) The front side is the name of the light path, and the reverse side is the light path code and barcode, and the orientation is uniform.
5) The change text hangs down with the pigtails, naturally facing up.
5 Perform the necessary optical path test
After each fiber path jump is completed, it needs to be tested. The test steps are as follows:
1) Test the wavelength of the splitter at 1490 with an optical power meter, and the optical power should be less than -22dB.
2) The user end tests with the 1490 wavelength of the optical power meter. The receiving power should be less than -23dB, and the maximum sensitivity of the ONU is generally -24dB.
3) Use the ONU device to debug the Internet for the user.
4) If there is no light, you can judge whether the fiber is wrong by the visible light source (red light).
5) If there is no fiber but still no light, when the loss is large, the ONU can not work normally, and the cable maintenance department can be informed.
6 Resource Management
It is strictly forbidden to change the fiber order of the construction sheet without authorization. The optical path resources need to be changed during the loading and maintenance process. The relevant information of the optical path is recorded on the work order and timely reported to the resource department for updating.
The above are all the techniques for dust removal in the cabinet and how to organize the fiber jumper in the cabinet. In fact, the cabinet can be extended by cleaning, and the fiber jumper in the cabinet is arranged to facilitate our future inspection and aesthetic effect.
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