ska phase 1 system requirements specification - The Square ...

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WP2‐005.030.000‐SRS‐002Revision : BIdent Requirement Applicability Parent VerificationSYS_REQ_8130Central facility UPS. The powersource to the central facility shallhave back‐up provisions forcontrolled shut‐down (TBC).TBD6.1.2 Data synchronizationIdent Requirement Applicability Parent VerificationSYS_REQ_8140Subsystem time standard. EachSKA1 AA or dish system shallmaintain an internal timestandard with an accuracy of TBDnanosecondsTBDIdent Requirement Applicability Parent VerificationSYS_REQ_8150Central time standard. All SKA1subsystems shall synchronizetheir internal time standards tothe central timing standard withan accuracy of TBD nanoseconds.TBD6.2 Internal Interfaces6.2.1 PowerIdent Requirement Applicability Parent VerificationSYS_REQ_8160Limiting excessive currents. SKA1equipment circuitry shall beprotected against excessivecurrents by a current limitingdevice, which shall not itselfproduce excessive currents.TBDIdent Requirement Applicability Parent VerificationSYS_REQ_8170Power surge protection. SKA1sub‐systems shall be protectedagainst power transients andsurges.TBD2011‐02‐14 Page 54 of 58
WP2‐005.030.000‐SRS‐002Revision : BIdent Requirement Applicability Parent VerificationSYS_REQ_8180Polarity mis‐connectionprotection. SKA1 equipmentcircuitry shall be protectedagainst the effects of inadvertentwrong polarity connections. (TBC)TBD6.3 SynchronizationIdent Requirement Applicability Parent VerificationSYS_REQ_8210Data time‐tagging. All dishes andaperture arrays shall time‐tagreceived and processed data withthe accuracy of their internal timestandard.TBD7 Support Requirements7.1 MaintenanceIdent Requirement Applicability Parent VerificationSYS_REQ_9110Test resources. SKA1 subsystemsshall specify what special testresources they require in theoperational phase.TBD7.2 LogisticsLogistic requirements during built‐up and operations, may include: system maintenance, softwaresupport, system transportation modes, supply‐system requirements, impact on existing facilities,and impact on existing equipment.Ident Requirement Applicability Parent VerificationSYS_REQ_9130Preventive maintenance.Preventive maintenance of SKA1hardware shall be performed inaccordance with the maintenanceprogram established for SKA1.TBD8 Extensibility RequirementsPhase 1 of the SKA is to be followed by a Phase 2, designed to meet a superset of sciencerequirements given in AD1.2011‐02‐14 Page 55 of 58
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SKA PHASE 1 SYSTEM REQUIREMENTS SPE
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ska phase 1 system requirements specification - The Square ...

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