FiberPatrol configurations
FiberPatrol Site Planning & Installation Guide
Page 17
Line configurations
The line configuration is typically used when the sensor unit equipment is located at one end of the
protected perimeter, and the perimeter extends away from the equipment room in one direction.
The line configuration does not provide single cut redundancy for the full length of the sensor
cable. In the event of a cut or severely damaged sensor cable, detection will continue between the
start of the detecting sensor cable and the cut/damaged point in the cable.
illustrate the line configuration.
If necessary, the non-detecting lead cable can be spliced to the detecting cable at the start point of
the sensor cable. Splices may also be required for other site specific features.
Figure 15 FiberPatrol split configuration (2 lead cables)
Figure 16 Recommended line configuration
fiber optic cable
Note:
S1
S2
fusion splice
fiber optic termination
splice enclosure
sensor unit equipment
Cable length = 2a + b + c
single end module
splice enclosure
single end module
includes dual start module
25 km
(max.)
25 km
(max.)
fiber optic cable (sensor cable/lead cable)
S1 (sensor fiber 1 - internal to fiber optic cable)
S2 (sensor fiber 2 - internal to fiber optic cable)
fusion splice
fiber optic termination
splice enclosure
sensor unit
equipment
beginning of detecting cable
non-detecting lead cable
NOTES: Splices may be required at the beginning of the detecting cable and at other site specific features,
due to installation constraints and conditions.
Cable length = a + b