Optex Fiber SenSys Terrain Defender TD 100 Installation Manual page 12

The RF Ports of each processor are terminated by one of the following
•
Sensor cable with a processor at both ends of cables
•
SMA terminator on TD100 TX/RX ports
•
Sensor cable with End of Line Terminators (EOLT)
There are many possible combinations of the above configurations to describe a perimeter and
the mode of operation when one considers the possible ways to terminate a processor.
The concept of "Open" or "Closed" perimeters describes whether the sensor line encompasses
the whole perimeter or only a part of the perimeter. In a "Closed" perimeter, an intruder cannot
enter the perimeter without passing over the sensor cables. There are some exceptions, such
as a perimeter that includes a building as part of the perimeter.
A four-processor "Closed" perimeter showing "Dual-Ended" and "Single-Ended" operation is
shown in Figure 5.
(unprotected side) RX
Sensor Cable
The TD100 processors are powered over the sensor cables. DC power is supplied over the RX
and TX cables for redundancy. In high-security sites, it is common to install multiple TD24PSUs
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◄ ►
RX2 RX1
TD100 Lead
◄ ►
TX2 TX1
TX (protected side)
Four TD100 Dual Ended
E2EC System
Single Ended "Fail Safe" Operation
Up to the cut from each side
TD24PSU
or
TD48PSU
◄ ►
TX1 TX2
TD100 Mid #2
◄ ►
RX1 RX2
Figure 5. Four Processor Closed Perimeter
:
Double Ended Operation (E2EC)
(Same Place & Time)
TD24PSU
X
or
TD48PSU
Cut Sensor Cable
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