Installation Notes
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Installation Notes section.
TIA-TSB-140 recommends that an OTDR be used in conjunction with Tier I
length loss testing performed by an Optical Loss Test Set (OLTS).  Use the
OLTS to determine overall installed plant dB loss and the OTDR for Tier II
testing to ensure that individual network events, such as cable, connectors
and slices, are in compliance with industry standards.
Note the use of an OTDR to
perform Tier II testing of an
installed single-mode system at
a patch panel in an equipment
room.  Shown here the
technician is testing cable and
connector compliance, as well
as connector back reflection.  A
pulse suppression cable is set
between the OTDR and the
system under test.
When inserting a cleaved fiber into a
fusion splicer note the position of the
hands.  The fiber is positioned short of
opposing fiber in the provided "V"
grooves.   Position the fibers so as to
eliminate fiber curve.  Always work in
an area with adequate ventilation and
lighting.
Jacket cable is tied down in a splice
tray as shown to ensure safe
transition. Take time to measure the
amount of fiber the tray can
accommodate before splicing so as to
avoid having to manage excess fiber.  
Position the splice holders to
eliminate tight bends and possible
attenuation.
When conducting a Tier I test of an
installed cable plant, reference the
OLTS light source and power meter
with a referenced launch cable
assembly.   Move the power meter to
the end of the cable plant and with a
non-referenced receive cable plug in
the power meter and read the length
loss in dB.
Use a Visual Fault Locator (VFL) to
troubleshoot the continuity of an
installed cable plant then use an
OTDR to develop channel maps
followed by trace and event loss
tables.