FiberPatrol configurations
Page 16
FiberPatrol Site Planning & Installation Guide
Split configuration
The split configuration provides extended length coverage for an open-ended perimeter. To get the
maximum length coverage the sensor unit is located near the mid-point of the protected section of
fence. The sensor cable runs in opposite directions along the fence with each end module located
up to 25 km away from the sensor unit. One sensor fiber provides detection in each direction with
S1 running in one direction and S2 running the opposite way. A splice enclosure is required at the
start point on the fence to use one lead cable from the sensor unit to the perimeter (see
).
Using two lead cables eliminates the need to have the start point splice (see
).
Figure 13 FiberPatrol open-ended loop configuration
Figure 14 FiberPatrol split configuration (1 lead cable)
fiber optic cable (sensor cable/lead cable)
Note:
S1 (sensor fiber 1 lead)
S2 (sensor fiber 2 lead)
fusion splice
fiber optic termination
splice enclosure
splice enclosure
sensor unit equipment
Cable length = a + 2b + 2c
S1 (sensor fiber 1 detecting)
S2 (sensor fiber 2 detecting)
single end module
splice enclosure
single end module
includes dual start module
fiber optic cable
Note:
S1
S2
fusion splice
fiber optic termination
splice enclosure
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.)