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The IOC provides the control and monitoring capability for a low - drift and low - phase - noise continuous-wave optical link system used for transmission of a 3GHz RF reference signal over long distance. The system consists of a Transmitter (Tx) and a Receiver (Rx) units that are connected with two single mode fibers (SMF). An ) (optical links).  To achieve low phase noise performance, the RF signal is propagated through the unidirectional optical link. The low noise link is additionally stabilized against phase drifts with the bidirectional phase-compensated optical link (low drift link).  An ethernet connection between the units is also needed for data exchange and control purposes.  The IOC communicates with Tx and Rx via Telnet sessions.  


Equipment State Machine

TBD

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