• FDH Enclosures
• FDH Optical Splitter Modules

• FDH Safety Kit
• FDH Templates

The Fiber Distribution Hub (FDH) enclosures are used to provide connections between fiber optic cables and passive optical splitters in the Outside Plant (OSP) environment. These enclosures are used to connect feeder and distribution cables via power splitters in a Fiber-to- the-Premises (FTTP) network application. The FDH enclosures are placed strategically in the FTTP network to facilitate service connection and reconfiguration.

The FDH enclosures provide environmental and mechanical protection for cables, splices, connectors and passive optical splitters. These heavy gauge aluminum enclosures are NEMA-3R rated and provide the necessary protection against rain, wind, dust, rodents and other environmental contaminants. At the same time, they remain lightweight for easy installation, and breathable to prevent accumulation of moisture in the unit. The aluminum construction with heavy powder coat finish also provides for corrosion resistance. The enclosure is accessible through secure doors that are locked with a standard tool or pad-lock.

The FDH provides termination, interconnection and splitting in one compartment. The unit accommodates either metallic or dielectric OSP cables via sealed grommet entry. Cables are secured with standard grip clamps. The FDH provides grounding for metallic members and for the cabinet.

Sizes
The enclosures are available in four configurations to correspond to five different distribution counts: 144, 216, 432, 576 and 864.

Special Features
The FDH enclosures are pre-terminated with fiber stub cables and pre-assembled with high performance, low loss optical connectors and optical splitters. The enclosures are usually pre-terminated with a 25-foot or 100-foot long stub cable containing 144, 216, 432 or 576 fibers. The 864-fiber enclosure is pre-terminated with two 432-fiber stub cables. The enclosures are also provided with a 12-fiber, 24-fiber or 48-fiber feeder cable stub, either 25-feet or 100-feet that is quickly spliced to a feeder cable routed back to the central office. The entire enclosure is intended for rapid and easy field deployment. Installation involves mounting the enclosure to a pole or pedestal and then splicing the stub cables in nearby fiber optic closures.

Fiber Management
The FDH configuration provides for total fiber management hardware using a unique front facing cross-connect design. The front fiber management allows Splitter Module outputs to be routed and staged within the enclosure so that they can be efficiently connected into service at a later date.

The splitter module is designed with the output of the splitter connectorized with pigtails that extend through the front of the module and are wrapped around and staged on parking adapters. The parking adapters do not connect anything, but rather are used as a staging position to locate 100% of the connectorized pigtails until they are ready for deployment. Excess slack can be managed in vertical channels of the cabinet using slack loops.

The entire cabinet can be interconnected without congestion. Pigtail connector ends can be quickly identified and connected to distribution fibers. The rear of the cross-connect field is used to manage pre-terminated fibers from the distribution cable. In the 144/216-fiber cabinets a unique swing-frame design allows for easy maintenance access to the rear connectors from the front, if required. The 432/576/864-fiber pedestal mount design allows for both front and rear access. All units are available in both a pedestal and pole mount configuration.

Mounting Applications
The FDH enclosures are offered in pole mount or pedestal mount configurations.

• NEMA-3R rated enclosure provides heavy-duty protection from wind, rain, and other contaminants
• Aluminum welded construction resists corrosion
• Lightweight structure provides for easy installation
• Accommodates high-density pre-terminated configurations, typically 144, 216, 432, 576, or 864 fibers
• Accommodates high-density modular splitter options, 1x8, 1x16, 1x32, 2x8, 2x16 or 2x32
• Complete fiber management allows for flexible re-arrangement
• Identification and labeling assure product traceability and ease of identification
• Flexible design accommodates a variety of mounting arrangements including pole and pedestal mounting
• 216-tool (can wrench), key lock or padlock offers flexible security options
• Cable entrance ports seal cable at entry
• Cable management and routing limits radius and adds strain relief

The Fiber Distribution Hub Optical Splitter Modules provide connectorized 8, 16 or 32 pigtail outputs and one or two connectorized pigtail inputs.

The modules incorporate storage adapters or “parking spots” that accommodate 100% of the output pigtail connectors. The parking spots are located on the front panel of the module to temporarily stage splitter pigtail connectors until they are connected into service. The FDH splitter module pigtail connectors are built at the factory pre-parked into the storage adapters, keeping the pigtails organized and protected.

The splitter module input is ready spliced to the feeder cable in the splice shelf using an individual fusion splice.

The splitter module provides clear identification of each output cable and connector as well as easy hand access to splitter ports. The splitter module is designed with the output of the splitter connectorized with pigtails that extend through the front panel of the mod staged on beige parking adapters. The beige parking adapters are staging positions for locating the connectorized pigtails until they are ready for deployment.

Sizes
The FDH Optical Splitter Module is available with two different output fiber lengths: 9 feet (2.7 m) and 14 feet (3.7 m). The 14-foot output cable is intended for use in the FDH-432 pole mount cabinet, which requires longer vertical routing than the other cabinets. The FDH Optical Splitter Module is also available with various splitter options to include 1x8, 1x16, 2x8, 2x16, 1x32 and 2x32 configurations.

• Tested to Telcordia GR-1209, GR-1221 and GR-326
• Variety of input/output configurations
• Pigtails can be provided with a choice of connectors
• Easy snap-in mounting
• Clear, detailed labeling and serialization
• 100% pigtail connector parking

FDH Safety Kit

This OSHA approved optional safety kit attaches to the standard FDH pole mount kit and should be used when an FDH is mounted at elevations that require service personal to be positioned at or above four feet above the ground. This kit is designed to provide a worker with two locations for safety harness lanyard attachment (D-Rings).

In addition to the safety anchor system, this kit includes two worker grab handles to assist in the repositioning of a worker from a ladder onto a platform that may be present with the FDH cabinet.

Pad mount installation is one of the pedestal mounting options for underground applications, and can utilize either a preformed or locally constructed poured concrete pad.

The Fiber Distribution Hub base templates are used with the FDH pad mount enclosures when a poured concrete pad is constructed.