Fiber distribution box
Fiber Distribution Terminal (FDT) is a key equipment for fiber optic cable distribution, wiring and terminal connection in fiber optic access networks. It is mainly used to distribute the fiber optics of the main fiber optic cable to multiple users or branch links. It is widely used in "last mile" fiber-to-the-home (FTTH), campus network, security monitoring and other scenarios
product parameters
1. Parameters of the fiber splitter box
Community FTTH: priority 24-48 core, wall-mounted/wall-mounted, IP65 protection, SC interface, optional integrated 1:16 splitter.
Outdoor remote areas: 72-144 core, holding rod/floor type, SMC material, IP66 protection, with grounding function.
Park monitoring: 12-24 core, wall-mounted, IP20/IP65 (indoor/outdoor), LC interface, no need for spectroscopic function
2, material and weather resistance
Shell material directly affects service life and environmental adaptability:
Indoor type: ABS engineering plastic (lightweight, low cost) or PC/ABS alloy (better impact resistance).
Outdoor type: SMC composite (glass fiber reinforced resin, UV resistance, high and low temperature resistance - 40 ° C~ + 60 ° C), stainless steel (304 material, corrosion resistance, suitable for coastal high salt spray areas).
Selection points: stainless steel is preferred in coastal areas, SMC material is selected in high temperature/cold areas to avoid aging and cracking of plastic shell
3, installation method
determines the deployment location and space adaptability of the fiber box:
Wall-mounted type: fixed on the wall (corridor, telephone pole), small size (such as 12-48 cores), suitable for scenes with limited space.
Hold pole type: fixed on the telephone pole by holding hoop, commonly used outdoors, need to resist wind and shock (wind speed 30m/s).
Floor type: placed on the ground (such as residential green belt), large capacity (72 cores and above), need to be equipped with a base to prevent water accumulation.
embedded wall type: embedded in the wall to reserve holes, beautiful and space-saving, commonly used in high-end residential corridors
4, protection level
measures the ability of the fiber box to resist dust and water intrusion, expressed by IP (Ingress Protection) level, core parameters:
Indoor type: IP20 (anti-finger touch, no waterproof requirements), used in corridors, weak electricity rooms and other dry environments.
Outdoor type: IP65 (completely dustproof, anti-low pressure water spray), IP66 (anti-high pressure water spray), IP67 (short-term water immersion), suitable for outdoor utility poles, ground, pipeline wells and other scenes, need to withstand wind and rain, high temperature and low temperature.
5, the interface type
fiber splitting box realizes fiber optic activity connection through the adapter (interface), the common interface needs to match the user equipment or cable type:
SC interface: square, easy to plug and unplug, commonly used in FTTH user terminal (optical cat connection), monitoring equipment, single-core two-way transmission.
LC interface: miniaturization (size is 1/2 of SC), high-density scenarios are preferred, suitable for campus networks and high-speed links.
MPO interface: multi-core parallel (12-core, 24-core), used for multi-core fast docking of trunk cable and branch cable, suitable for large-capacity fiber splitting (such as 144-core fiber splitting box).
6, capacity (number of fiber optic cores)
refers to the total number of fiber optic cores that the fiber box can accommodate (including the number of trunk fiber optic cables + the number of branch fiber optic cables), common specifications:
Small capacity: 8 cores, 12 cores, 24 cores (suitable for small unit buildings, villas);
Medium capacity: 48 cores, 72 cores (suitable for medium-sized communities, parks);
Large capacity: 96 cores, 144 cores (suitable for large communities, dense user areas)
