FIBER SENSYS SecurLAN Application Note

Optical cutoff switch

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SummAry

Connected to the SecurLAN system, the Optical Cutoff Switch op-
tion enables the system or the operator to take protective action in
the event an intrusion attempt is detected at the physical level of a
network's infrastructure. unlike older versions of the hardware, the
new Optical Cutoff Switch is not only capable of disrupting the flow of
data through the compromised cable, but certain configurations of the
switch are also capable of re-routing data to a secured cable.
I
ntroductIon
The SecurLAN
Optical Cutoff Switch is an option that enables the Secur-
®
LAN system to take protective action in the event an intrusion attempt is
detected at a protected network data cable (a network configuration known
as a Protected Distribution System or PDS). Depending upon its configu-
ration, the Optical Cutoff Switch is able to either halt the flow of data or
re-route it to another cable.
Figure 1 - The SecurLAN System Block Diagram
Application Note
SecurLAN
®
Optical Cutoff Switch

Installation

Rev. A

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Summary of Contents for FIBER SENSYS SecurLAN

  • Page 1 Application Note SummAry Connected to the SecurLAN system, the Optical Cutoff Switch op- tion enables the system or the operator to take protective action in the event an intrusion attempt is detected at the physical level of a network’s infrastructure. unlike older versions of the hardware, the...
  • Page 2 SecurLAN Optical Cutoff Switch Installation ® The Optical Cutoff Switch connects to the system through the Output Relay Module (ORM). Alternatively, the Optical Cutoff Switch is capable of connecting to the Base Unit Controller directly provided the Base Unit Controller’s port is configured as a “Gen- eral Purpose I/O Port.”...
  • Page 3 Optical Cutoff Switch in the instrument rack. A 5-pin terminal block mounted on the rear panel of the Optical Cutoff Switch has con- nection points for external power as well as input from the SecurLAN system. Table  - Optical Cutoff Switch Rear Panel Pinout...
  • Page 4 ® Figure  - Inside the Optical Cutoff Switch With the Optical Cutoff Switch connected properly to the SecurLAN system, an alarm condition causes a relay to close in either the ORM or the Base Unit Controller, plac- ing a ground on the Input pin on the rear panel of the Optical Cutoff Switch. Placing...
  • Page 5 SecurLAN Optical Cutoff Switch Installation ® peratIon This section outlines steps for connecting and operating the Optical Cutoff Switch with the SecurLAN system. (orM) onnectIng to the utput elay odule To connect the Optical Cutoff Switch to the ORM: 1. Connect +6-15 VDC from an external power supply to Pin 1 of the Optical Cutoff Switch.
  • Page 6 SecurLAN Optical Cutoff Switch Installation ® 5. For 1x3 Optical Cutoff Switches, repeat Steps 3 and 4, connecting a second relay on the ORM to Pin 4 of the Optical Cutoff Switch (“Input 2”). This second relay is then used to move the internal switch between Port A, Port B, and the Off position in accordance with Table 4.
  • Page 7 SecurLAN Optical Cutoff Switch Installation ® Figure  - Optical Cutoff Switch Wiring Diagram...
  • Page 8 ® For more information on installing and using the Optical Cutoff Switch option with the SecurLAN system, please contact Fiber SenSys’ sales or technical support team directly at +1-503-692-4430 or by email at info@fibersensys.com. 2925 NW Aloclek Drive, Suite 130...

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