CommScope BOSTM BrightPath Optical Solutions - Manual (Page 34)

Introduction
The drop cable connects the tap to the NID/NIU located on the structure. As outlined on
page 3.5, the drop cable is either the DF/BP flat cable or the DA/BP armored central tube
cable. Both cables can be buried; the DF flat cable is self-supporting for aerial installations.
Please consult the DF cable spec sheet for span distances.
Tap enclosure and optical tap module
The drop side of the tap enclosure has up to eight connectorized bulkhead adapters. Drop
cables are threaded through the grommets shown at the bottom of the diagram; they are
attached to the enclosure by cable ties and by securing their strength members with retaining
screws.
With adjustment, the grommets fit either DF/BP or DA/BP cables.
Fibers are spliced to SC/APC pigtails (connectors with fibers attached), placed in the fiber
raceways and plugged into the appropriate bulkhead adapter.
Network Interface Device (NID) and Network Interface Unit (NIU)
The NID consists of a weather-hardened enclosure that contains the NIU, an electro-optical converter/transmitter
and fiber connection, behind a craft-accessible door.
Power for the NIU is provided from the residence, either inserted
over the RF coax or though an independent connection. Drop
cable is terminated at the enclosure and the prepared fiber is
spliced to a pigtail. Grounding is required.
9.1 Drop and NID/NIU installation
Introduction