Page 10
FiberPatrol Site Planning & Installation Guide
•
indoor components are rack-mountable in a standard EIA 19 in. equipment rack:
•
sensor unit - 4RU component transmits laser light into two dedicated fibers and receives
and isolates back-scatter signals via the integral start module, analyzes the received
signal, locates disturbances, triggers alarms, monitors system status, includes Windows
operating system, FiberPatrol system software, configuration software and Network
Manager software
•
fiber connection module - 1RU panel for connecting the 2 fiber sensors (S1 and S2) from
the sensor unit to the lead cable in the equipment room, includes one 12-splice tray for
making the required fusion splices, a dual end module or a second splice tray can be
added, if required
•
rack-mount LCD keyboard/monitor/mouse combo - 1 RU panel provides control,
maintenance, calibration and configuration access to the FiberPatrol processor
FP1150 configurations
There are three distinct configurations for the FP1150 Series sensor:
•
Loop configurations in which the two sensors run in opposite directions in one fiber optic
cable.
•
Split configurations in which the two sensors run in opposite directions, in two fiber optic
cables.
•
Line configurations in which both sensors run in the same direction in one fiber optic cable.
The loop configuration provides single cable cut immunity whereby detection will continue over the
full length of the perimeter in the event of a single cut in the sensor cable. In the split configuration,
the two sensors work independently to provide twice the linear length of protection as compared to
the loop configuration. However, a cut cable ends detection beyond the point of the cut. In the line
configuration, the two sensors run in the same direction in the sensor cable and work in tandem for
alarm detection. With the line configuration, a cut cable ends detection beyond the point of the cut.
Figure 1 FiberPatrol block diagram - fully closed loop redundant configuration
with dual end modules
1 fiber optic sensor cable
non-detecting lead cables
2 fiber optic
equipment room
perimeter
fiber connection module
sensor unit
keyboard/monitor/mouse
security
system
management