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FiberPatrol Site Planning & Installation Guide
Do not over-tighten to avoid stripping or shearing the screws. The sensor cable should be
manually tensioned as it is being clamped and fastened to keep it straight and taut. Installed
sensor cable must not sag or touch the surface.
Sensor cable verification and test
Before making the splices in the equipment room and to the end modules, do a continuity check of
all spliced fibers and OTDR test the two sensor fibers (S1 and S2).
Continuity test
Use a visual fault locater (VFL) to verify continuity in S1 an S2, as well as any dark fibers that were
field spliced during the cable installation.
OTDR test
Before splicing the sensor fibers to the start and end modules, test the two sensor fibers from both
ends of the cable with an OTDR at the following settings:
wave length = 1550 nm
pulse width = 100 ns
average time = 2 min.
splice loss
0.05 dB (typical)
range
cable length
Calculate the average loss per km from each end of the sensor cable and use the higher reading.
The maximum cable loss must be 0.3 dB per km or less.
Control equipment installation
The FiberPatrol electronic control components are designed to be installed in an EIA 19 in.
equipment rack. The rack requires a mounting depth of 20 in. (51 cm) plus a minimum 2 in. (5 cm)
of front space between the equipment and the rack doors and at least 6 in. (15 cm) of rear space
for cables and ventilation. The overall depth of the rack must be a minimum of 28 in. (71 cm). Both
the front and back of the equipment rack must be accessible for a technician to make the cable
connections and to access power switches and reset buttons. The FiberPatrol electronic control
components require 9 contiguous RU beginning at least 12 in. (30 cm) above the floor. The
processor occupies 4 RU, the controller 3 RU, the patch panel/splice enclosure 1 RU, and the
optional rack-mount keyboard/monitor/mouse 1 RU.
The FiberPatrol sensor unit (processor and controller) operates on 100 to 240 VAC 50/60 Hz and
consumes 250 W maximum. The processor unit requires 2 independent AC receptacles and the
controller requires 1. An additional AC receptacle is required if the optional rack-mount keyboard/
monitor/mouse is being used at the site. FiberPatrol recommends that the FiberPatrol components
be powered through a UPS system.
CAUTION
Critical losses in the sensor cable discovered by OTDR testing must be
investigated and rectified before making the connection module and end
module splices.