SXC Software interfaces1 SXC: SW interfaces Ground segment SpacecraftDetectorTelescope TelecommandsTelemetry Cmd & hk parameters- conversion SpacecraftTelecommandsTelemetryProtocolBandwidthcoverage.

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Presentation transcript:

SXC Software interfaces1 SXC: SW interfaces Ground segment SpacecraftDetectorTelescope TelecommandsTelemetry Cmd & hk parameters- conversion SpacecraftTelecommandsTelemetryProtocolBandwidthcoverage Detector SpaceWire: Cmd & hk Parameters protocol

SXC Software interfaces2 SW interfaces with SC Telecommand packet structure Telecommand packet structure Telemetry packet structure Telemetry packet structure Packet exchange protocol Packet exchange protocol Time synchronization protocol. Time base, TAI, epoch; Time synchronization protocol. Time base, TAI, epoch; Time logging: Instrument on-board time against CDMS on- board-time against UTC Time logging: Instrument on-board time against CDMS on- board-time against UTC Instrument autonomy Instrument autonomy Continuous coverage or partial coverage Continuous coverage or partial coverage TM –packet rate. TM datarate. In case of partial coverage: storage size. TM –packet rate. TM datarate. In case of partial coverage: storage size. Format of pointing data Format of pointing data

SXC Software interfaces3 TAC, IDC TAC IDC interfaces The TAC and the IDC shall comply with the SpaceWire Interface specification. Both the TAC and the IDC shall act as a SpaceWire Node. The TAC and the IDC shall comply with the SpaceWire Interface specification. Both the TAC and the IDC shall act as a SpaceWire Node. The IDC is not acting as a SpaceWire Routing Switch. This implies that there is no packet interface between TAC and SC. The IDC is not acting as a SpaceWire Routing Switch. This implies that there is no packet interface between TAC and SC. The IDC shall receive Telecommands from the SC that command the TAC. The IDC shall unpack these commands and forward the relevant command-data to the TAC The IDC shall receive Telecommands from the SC that command the TAC. The IDC shall unpack these commands and forward the relevant command-data to the TAC The IDC shall request at a regular interval the TAC to send Housekeeping data. The IDC shall pack the received data in HK- packet and transmit this data to the SC. The IDC shall request at a regular interval the TAC to send Housekeeping data. The IDC shall pack the received data in HK- packet and transmit this data to the SC. [ Option: the TAC generates data without being asked to do so]

SXC Software interfaces4 TAC, GS GS TAC interfaces GS shall generate commands to command the heaters GS shall generate commands to command the heaters GS shall display TAC-housekeeping GS shall display TAC-housekeeping TAC shall deliver conversion data of the command parameters in a format agreed with GS TAC shall deliver conversion data of the command parameters in a format agreed with GS TAC shall deliver conversion data of the monitor parameters in a format agreed with GS TAC shall deliver conversion data of the monitor parameters in a format agreed with GS