Alarm-transmission system
Alarm-transmission system
OSD143/144 fiber-optic alarm-transmission system supports 20 alarms on one optical fiber. Twenty-alarm extender cards can be added, allowing 60 alarm states to be transmitted. The system`s sampling rate of 25 kilosamples per second enables an optional version to operate as a 20-to-120 channel data multiplexer.
Optical Systems Design