RAD Data comm RSD-20 operation manual Theory of Operation and Applications

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THEORY OF OPERATION AND APPLICATIONS

RSD-20 OPERATOR'S MANUAL

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Contents RSD-20 DUUDQW\ 6DIHW\DUQLQJV HFODUDWLRQRI&RQIRUPLW\ Table of Contents Introduction GeneralFunctional Description Specifications Indicators PowerOrdering PhysicalInstallation Physical InstallationElectrical Installation AC PowerInternal Switches and Strap Selection Rear PanelRear Panel Installation Installation System Synchronization and Clock Distribution RSD-20/V.35Synchronization on Main Channel Modem Clock Synchronization on Main Channel Modem’s ClockSynchronization on RSD-20 Internal Clock Synchronization on Internal ClockRSD-20 Synchronization on Sub-channelRSD-20/X.21 External Clock for more than one Sub-channelMain channel is DTE attached to a modem Main and all sub-channels are DCE attached to DTEsMain channel is DCE and sub-channels are mixed DTE and DCE Controls and Indicators OperationFront Panel Operating Procedure Power Turn OnPower Turn Off OperationFault Isolation Procedure Power SupplyOperational Field Strapping Changes RSD Malfunction Contention SUB-CHANNEL Disable Theory of Operation and Applications IntroductionControl Signals Main Channel Control SignalsSub-channel Control Signals RSD-20/V.35RSD-20/X.21 Theory of Operation and Applications RSD-20 Operators Manual Theory of Operation and Applications Applications RSD-20 Operating ModesTable A.1 X21 Interface Signal Description Appendix aTable B.1 Interface Signal Description Appendix B