a) building (indoor, outdoor) fiber optic distribution, DP box should meet the requirements of the upper and lower into the cable, the top and bottom of the box should be configured with four entry holes, and cable fixing and protection devices should be able to meet the needs of four fiber optic cable fixed at the same time. Such as the use of separate under the cable, the upper cable into the empty need to do sealing treatment.
b) Fiber optic splicing tray should be open, and Fiber optic splicing tray and skin cable fusion tray installation and size requirements consistent.
c) All fasteners should be firmly and reliably linked, the box sealing strip bonding should be flat and firm.
d) box door opening angle of not less than 180o, the door lock opening and closing flexible and reliable.
e) The bending radius of fiber optic cable introduction should be greater than 15 times the diameter of the fiber optic cable.
f) fiber optic cable in the box, regardless of where to turn, the radius of curvature should not be less than 30mm.
g) The small bending radius of the butterfly introduction cable should not be less than 10mm after fixing, and the reserved length in the box should not be less than 0.5m.
h) The optical splitter installed in the optical splitter box should be fixed in the box using solid materials, and the performance index of the optical splitter must meet the requirements of the tender specifications.
i) Optical splitter using fiber optic active connector should be SC type, two plugs connected arbitrarily insertion loss ≤ 0.5dB, return loss > 35dB, its performance indicators should be in line with YD, T 1272.3-2005 “fiber optic active connector part 3: SC type” requirements. Fiber optic activity connector used in the upper port of the optical splitter should be green, the fiber optic activity connector used in the lower port should be blue, the free port is not installed fiber optic activity connector.
j) The terminal, fusion, storage of optical fiber in the DP box of the building should be conveniently configured in sets within the full capacity.
j) Optical splitting inserts should be modular and integrated, and there should be no jumper in the building splitting and distribution box.
l) building optical fiber cable distribution box manufacturers should provide the manufacturers and specifications of the splitter used, and provide proof of purchase.