Installation Notes
Email Enulta or phone
425.220.3395 with your questions
and comments about our
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
(extended) 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
(extended)
testing of an installed system at
a patch panel in an equipment
room.  
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 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.