FIBER SENSYS FD322 애플리케이션 노트 - 페이지 6
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The cable break detector can be implemented utilizing one or both of the APU channels. If only one
channel is used, the other channel is typically "jumpered-out," which means that a short single-mode
or multi-mode jumper would be used to close the loop of the unused channel; that way, either the Fault
indicator or the Alarm indicator can be used with the functioning channel. Both channels share a
common Fault relay so if one of the two channels was not connected, the Fault relay would
permanently be in a fault state, and a red light would signal a fault on the unused channel. The primary
purpose of "jumpering-out" the unused channel is to satisfy the unused channel and prevent the red
LED from illuminating.
Figure 4
Fiber SenSys, Inc.
2925 NW Aloclek Drive, #120
Hillsboro, Oregon 97124, USA
Tel: +1(503)692-4430 • Toll free (US) +1(800)641-8150
www.fibersensys.com
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Connect one end of the cable being used to detect
breaks to the output port on FD322; connect the other
end to the input port (on the same side).
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