at terminal head end equipment [of the type to match terminal head
equipment connectors] [of type [_____]] [as shown]. Connector insertion
loss shall be nominally 0.3 dB and maximum loss shall be less than 0.7 dB.
2.18
MECHANICAL SPLICES
Mechanical splices shall be suitable for installation in the field.
External power sources shall not be required to complete a mechanical
splice. Mechanical splices shall be self-aligning for optimum signal
coupling. Mechanical splices shall not be used for exterior applications
where they may be buried underground or laced to aerial messenger cables.
Mechanical splices may be used for interior locations and within
enclosures. Splice closures shall protect the spliced fibers from moisture
and shall prevent physical damage. The splice closure shall provide strain
relief for the cable and the fibers at the splice points.
2.19
FUSION SPLICES
The fusion splicer shall be portable, fully automatic, and compact. It
shall be suitable for fusion splicing all types of telecommunication grade
optical fibers and individual fibers as well as cables containing multiple
optical fibers. The fusion splicer shall be capable of operation under
various environmental conditions (e.g., temperature, humidity, altitude,
etc.) for all types of optical cable deployments. The fusion splicer shall
be craft friendly and operation shall require only minimal training.
Automatic splicing software shall be available to remove operator and
environmental dependence from the splicing process. The controls of the
fusion splicer shall be designed in accordance with ergonomic
considerations. The automatic splicing process shall be started by
pressing one button and can be interrupted at any time. Alternatively,
semi-automatic (step-by-step) or manual splicing shall be available by menu
selection. Communication with the fusion splicer shall be conducted
through a language unspecific keyboard with universal symbols and the
dialogue with the splicer shall be displayed on the device screen.
2.20
CONDUIT, FITTINGS AND ENCLOSURES
Conduit, fittings, and enclosures shall be as specified in Section 16402
INTERIOR DISTRIBUTION SYSTEM, and as shown.
2.21
FAN-OUT KITS
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NOTE: Fan-out kits (also referred to as providing
buffer tube fan-out kits, or furcating harnesses, or
furcation kits, or installing furcating tubes) will
be provided for terminating all loose-tube optical
fibers (i.e., optical fibers with 250 micron outside
diameter) and will additionally incorporate strain
relief if the connectorization is not contained
within a patch panel. Fan-out kits with furcating
tubes are typically not used for tight-buffered
(e.g., 900 micron outside diameter) optical fibers
which have the connectorization contained within a
patch panel. Fan-out kits with strain relief
furcating tubes are appropriate for field
connectorization of tight-buffered optical fibers
when the termination is not contained within a patch
panel.
SECTION 16768A
Page 30
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