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GAIA.ASU.SP.ESM.00007

Issue 2.00

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Document Autogenerated from DOORS Module : /GAIA Prime/Level 4/4_60 EGSE/4_60_3 Avionics/Avionics SCOE Requirements Specification

GAIA.ASU.SP.ESM.00007 (Avionics SCOE Req Iss 2).doc

Avionics SCOE Requirements Specification

CI CODE: 13000

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Rated By : D. Perkins

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Summary of content (79 pages)

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GAIA.ASU.SP.ESM.00007 Issue 2.00 Page 1 of 79 Gaia Avionics SCOE Requirements Specification CI CODE: 13000 DRL Refs : UK EXPORT CONTROL RATING : Not Listed Rated By : D. Perkins Prepared by: Date: Checked by: Date: Approved by: Date: Authorised by: Date: This document is produced under ESA contract, ESA export exemptions may therefore apply.
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Gaia GAIA.ASU.SP.ESM.00007 Issue 2.00 Page 2 of 79 INTENTIONALLY BLANK Astrium Ltd owns the copyright of this document which is supplied in confidence and which shall not be used for any purpose other than that for which it is supplied and shall not in whole or in part be reproduced, copied, or communicated to any person without written permission from the owner. GAIA.ASU.SP.ESM.00007 (Avionics SCOE Req Iss 2).
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Gaia GAIA.ASU.SP.ESM.00007 Issue 2.00 Page 3 of 79 CONTENTS 1 INTRODUCTION AND SCOPE..................................................................................................................6 1.1 Introduction..........................................................................................................................................6 1.2 Scope ...............................................................................................................................................
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Gaia GAIA.ASU.SP.ESM.00007 Issue 2.00 Page 4 of 79 3.12 Avionics SCOE Validation Test .....................................................................................................64 CO-ENGINEERING ACTIVITY ................................................................................................................65 GENERAL DESIGN AND INTERFACE REQUIREMENTS .....................................................................66 PA REQUIREMENTS....................................................
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Gaia GAIA.ASU.SP.ESM.00007 Issue 2.00 Page 5 of 79 INTENTIONALLY BLANK Astrium Ltd owns the copyright of this document which is supplied in confidence and which shall not be used for any purpose other than that for which it is supplied and shall not in whole or in part be reproduced, copied, or communicated to any person without written permission from the owner. GAIA.ASU.SP.ESM.00007 (Avionics SCOE Req Iss 2).
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Gaia 1 GAIA.ASU.SP.ESM.00007 Issue 2.00 Page 6 of 79 INTRODUCTION AND SCOPE 1.1 Introduction This document establishes the design, performance, interface and verification requirements for the Avionics SCOE for the Gaia Project. The Avionics SCOE is a primary element of a model-based architecture capable of modelling the satellite mission environment.
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Gaia GAIA.ASU.SP.ESM.00007 Issue 2.00 Page 7 of 79 1.3 Summary Description The Avionics SCOE is used during various stages of Spacecraft build to allow testing of the Gaia Avionics Subsystem in open-loop and closed-loop mode. It comprises the following test features: Simulation and measurement of the AOCS Actuators. Stimulation of the AOCS Sensors inputs. Acquisition of data from the CDMU MIL-STD-1553B Data BUS (Payload and Service Module).
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GAIA.ASU.SP.ESM.00007 Issue 2.
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Gaia 2 GAIA.ASU.SP.ESM.00007 Issue 2.00 Page 9 of 79 DOCUMENTS The following documents are applicable documents to this specification. Those parts of the documents that are specifically applicable for the subcontractor's product design, test, and manufacturing, are clearly defined by references within this specification. 2.1 Project Documents 2.1.
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Gaia 3 GAIA.ASU.SP.ESM.00007 Issue 2.00 Page 10 of 79 AVIONICS SCOE REQUIREMENTS 3.1 System Level Definition AVI-4006/GSE-SYS-390/R 2 sets of Avionics SCOE shall be provided: • Set #1 for AVM. • Set #2 for Spacecraft PVM AIT. AVI-4007/CREATED/R Both sets of Avionics SCOE shall be identical, with the exception that only Set #1 shall provide Power Simulation, as defined in Section 3.6.1 and Section 3.6.2.2.
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GAIA.ASU.SP.ESM.00007 Issue 2.00 Page 11 of 79 Gaia Figure 3.
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Gaia GAIA.ASU.SP.ESM.00007 Issue 2.00 Page 12 of 79 3.2 Avionics SCOE Controller AVI-209/GSE-SYS-788/R The Avionics SCOE Controller shall comprise a standard COTS Workstation Platform and Real Time Operating System (i.e., LINUX-RT, VxWorks or MicroSoft Windows-RT).
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Gaia GAIA.ASU.SP.ESM.00007 Issue 2.00 Page 13 of 79 AVI-3115/CREATED/A As a minimum, it shall be possible to run a Test Session on the Avionics SCOE for a period of 5 days, without loss of synchronisation or data. AVI-4234/CREATED/T It shall be possible to run a test session on the Avionics SCOE within 1 minute after boot of the Avionics SCOE Controller. Note: This requirement does take account of any warm-up time which may be needed for the SCOE hardware equipments. 3.
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Gaia GAIA.ASU.SP.ESM.00007 Issue 2.00 Page 14 of 79 3.5 Timing, Synchronisation and Acquisition Requirements 3.5.1 Time Synchronisation The overall timing requirements for Gaia EGSE are described in Section 5 of the Gaia EGSE ICD [AD01]. AVI-2937/CREATED/T,R The Avionics SCOE Controller local time shall provide a UTC reference time source (TREF) to all other EGSE requiring synchronisation to it. AVI-3391/CREATED/T,R The source of TREF shall be reference time with a granularity of better than 1us.
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Gaia 3.5.3 GAIA.ASU.SP.ESM.00007 Issue 2.00 Page 15 of 79 Data Acquisition AVI-2837/CREATED/T,R Avionics SCOE data acquisition and data generation shall occur both synchronously and asynchronously. AVI-2839/CREATED/T All data inputs to the Avionics SCOE from the Spacecraft Interfaces shall be acquired asynchronously (such as pulses, address lines, bus acquisitions). AVI-3547/CREATED/T The acquisition of data inputs to the Avionics SCOE from the Spacecraft Interfaces shall be triggered by the data itself.
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Gaia 3.5.4 GAIA.ASU.SP.ESM.00007 Issue 2.00 Page 16 of 79 SCET Correlation The Gaia CDMU transmits Spacecraft Elapsed Time (SCET) using a SVM 1553 broadcast message at subaddress SA 29 (refer to Section 9.5 of [AD05]). The CDMU (Telemetry Frame Generator) also inserts SCET in VC0 of each Telemetry Frame for transmission to the Ground System. As the Gaia Central Checkout System (CCS) is the acquisition and archive media for Telemetry, it must correlate Telemetry reception with TREF.
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Gaia GAIA.ASU.SP.ESM.00007 Issue 2.00 Page 17 of 79 AVI-3041/CREATED/T In the case of loss of both CDMU PPS correlation signals, the Avionics SCOE shall free-run the correlation function at one second intervals from the last latched value of TREF and flag an error towards the operator (MMI).
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GAIA.ASU.SP.ESM.00007 Issue 2.00 Page 18 of 79 Gaia 3.6 Spacecraft Interface Requirements The Spacecraft Interfaces provide the hardware I/O with the Spacecraft. All I/O interfaces to the Spacecraft are summarized in Appendix A. Individual I/O interfaces to the Spacecraft will be identified by unique Symbolic Name to be defined following project kick-off.
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GAIA.ASU.SP.ESM.00007 Issue 2.00 Page 19 of 79 Gaia AVI-4021/CREATED/T,R For both Type 1 and Type 2 Power Simulation, the LCL outputs shall be fed from a common Power Source (or multiple sources feeding LCL groups). Note: The common Power Source is equivalent to the PCDU Main Bus regulation point.
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Gaia GAIA.ASU.SP.ESM.00007 Issue 2.00 Page 20 of 79 AVI-4060/CREATED/T It shall be possible to switch off all LCL output by way of Emergency OFF switches, located on both the Avionics SCOE front panel and the Power Simulation rack front panel. AVI-2577/CREATED/T Each LCL circuit shall provide a monitor circuit to measure output current to an accuracy of 3% (full scale). AVI-2578/CREATED/T LCL current measurements shall be acquired synchronously and made available to the RTS as inputs to the PCDU Model.
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Gaia 3.6.2 GAIA.ASU.SP.ESM.00007 Issue 2.00 Page 21 of 79 1553 BUS Interfaces The Gaia on-board command/control system is based on a MIL-STD-1553B bus architecture.
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Gaia GAIA.ASU.SP.ESM.00007 Issue 2.00 Page 22 of 79 AVI-702/CREATED/T The Avionics SCOE shall provide simulation of data for each RT on the 1553 BUS to simulate missing Spacecraft units. AVI-3293/GSE-SYS-749, GSE-SYS-752, GSE-SYS-759, GSE-SYS-763, GSE-SYS-764, GSE-SYS-765/T For each RT on the 1553 BUS, Prime and Redundant BUS operation shall be possible in parallel. AVI-1899/CREATED/T In open-loop test modes, simulation of the each RT shall be as fixed responders only.
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Gaia GAIA.ASU.SP.ESM.00007 Issue 2.00 Page 23 of 79 AVI-2865/CREATED/T It shall be possible to enable/disable the 1553 BUS SPY function at any time from the local MMI or by command from the CCS. AVI-1897/CREATED/T Configuration of the BUS shall be possible from the local MMI, from the CCS (Test Procedure) or from the RTS.
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Gaia GAIA.ASU.SP.ESM.00007 Issue 2.
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Gaia GAIA.ASU.SP.ESM.00007 Issue 2.00 Page 25 of 79 3.6.2.2 PCDU Remote Terminal 1553 BUS Interface This section only applies to Avionics SCOE Set #1 for Power Simulation requirements. One special case of MIL-STD-1553B Remote Terminal simulation is that of the PCDU. When simulation of the PCDU is required, some LCL circuits are simulated in hardware by the Avionics SCOE (see Section 3.6.1 - Spacecraft Power Simulation).
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Gaia 3.6.3 GAIA.ASU.SP.ESM.00007 Issue 2.00 Page 26 of 79 SpaceWire BUS Interfaces AVI-277/EIU-2313,CDMU-3391,GSE-SYS-397/T Interfaces shall be provided for the Spacecraft CDMU/EIU (2) SpaceWire BUS. AVI-278/GSE-SYS-397/T Each Interface shall provide the following services: Redundant Bus Operation (A/B) Bus Monitor Functions (Bus Spy) AVI-288/EIU-2315,CDMU-3393/T It shall be possible to operate the CDMU/EIU SpaceWire BUS data rates up to 10Mbs.
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Gaia GAIA.ASU.SP.ESM.00007 Issue 2.00 Page 27 of 79 Note2: The purpose of PASSIVE mode operation on the SpaceWire BUS is to allow Models of the RTS to operate in parallel with real Spacecraft Units without responding to commands on the BUS. AVI-705/CREATED/T In open-loop test modes, simulation of the each SpaceWire BUS shall be as fixed responders only.
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Gaia GAIA.ASU.SP.ESM.00007 Issue 2.00 Page 28 of 79 3.6.3.1 SpaceWire BUS Spy Extraction Tool AVI-3550/CREATED/T A tool shall be provided to allow data previously stored in SpaceWire BUS Spy files to be extracted to files or displayed in a viewer. AVI-4073/CREATED/T For file output, a file header shall be inserted giving the following information: • File name from which the extraction is performed. • Extraction date. • The Extraction options selected.
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GAIA.ASU.SP.ESM.00007 Issue 2.00 Page 29 of 79 Gaia 3.6.3.2 EIU SpaceWire SHP Interfaces One special case of SpaceWire BUS simulation is that of the EIU for Standard High Power (SHP) Pulse Commands. When simulation of the EIU is required, the Avionics SCOE simulates SHP generation in hardware (see Section 3.6.9 - SHP Pulse Command Generation) to allow switching of Spacecraft Units.
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Gaia 3.6.4 GAIA.ASU.SP.ESM.00007 Issue 2.00 Page 30 of 79 PacketWire BUS Interfaces AVI-3476/CDMU-3941/T Interfaces shall be provided for the Spacecraft CDMU/PDHU (4) PacketWire (PW) BUS. AVI-3477/GSE-SYS-397/T Each Interface shall provide the following services: Redundant Bus Operation (A/B) Bus Monitor Functions (Bus Spy) AVI-3483/CDMU-3943/T The PW Interface signalling rate shall operate to a maximum of 10 Mbps.
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Gaia GAIA.ASU.SP.ESM.00007 Issue 2.00 Page 31 of 79 Note3: The purpose of PASSIVE mode operation on the PW BUS is to allow Models of the RTS to operate in parallel with real Spacecraft Units without responding to commands on the BUS. AVI-3521/CREATED/T In open-loop test modes, simulation of the each PacketWire BUS shall be as fixed responders only.
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Gaia GAIA.ASU.SP.ESM.00007 Issue 2.00 Page 32 of 79 3.6.4.1 PacketWire BUS Spy Extraction Tool AVI-4078/CREATED/T A tool shall be provided to allow data previously stored in PW BUS Spy files to be extracted to a file or displayed in a viewer. AVI-4079/CREATED/T For file output, a file header shall be inserted giving the following information: • File name from which the extraction is performed. • Extraction date. • The Extraction options selected.
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GAIA.ASU.SP.ESM.00007 Issue 2.00 Page 33 of 79 Gaia 3.6.4.2 PacketWire Active Interface To allow the Avionics SCOE to SPY the PacketWire BUS interfaces when the real CDMU and PDHU are connected, an active interface is needed to allow the Avionics SCOE to monitor the PacketWire traffic without disturbing normal BUS operation. AVI-4129/CREATED/T An Active Interface Box shall be provided for each PacketWire BUS to allow monitoring of the BUS when the CDMU and PDHU units are connected.
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Gaia 3.6.5 GAIA.ASU.SP.ESM.00007 Issue 2.
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Gaia GAIA.ASU.SP.ESM.00007 Issue 2.00 Page 35 of 79 3.6.5.2 CPS LV Status Simulation AVI-346/CREATED/T LV Status Simulation function shall be provided by relay simulation (18x) of each LV STATUS microswitch. AVI-347/CREATED/T LV Status Simulation shall conform to the following specifications: [AD06] Table 3.5-28 (Relay Status Acquisition Source Specification).
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Gaia GAIA.ASU.SP.ESM.00007 Issue 2.00 Page 36 of 79 AVI-391/CREATED/T It shall be possible to reset the event counters, individually or all at once, by command from the local MMI or from the CCS (Test Procedure/Command Line).. AVI-390/CREATED/T FCV ON times shall be made available to the RTS for closed-loop testing. AVI-2769/EIU-713, GSE-SYS-761/T It shall be possible to acquire the FCV pulses simultaneously on all channels. 3.6.5.
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Gaia 3.6.6 GAIA.ASU.SP.ESM.00007 Issue 2.00 Page 37 of 79 Combined Micropropulsion (MPS) Interfaces The following requirements will be considered as TBC pending Micropropulsion supplier selection. The requirements given are indicative of the interfaces and necessary functionality to be provided.
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Gaia GAIA.ASU.SP.ESM.00007 Issue 2.00 Page 38 of 79 AVI-3569/CREATED/T Measurement of LV Command pulses shall be triggered asynchronously by detection of an incoming pulse with the following specifications: • Pulse Width > 1ms • Pulse Amplitude > 10.0V AVI-3570/CREATED/T LV STATE (OPEN/CLOSE) shall be made available to the RTS. AVI-3571/GSE-SYS-754/T It shall be possible to acquire the LV pulses simultaneously on all channels. 3.6.6.
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Gaia GAIA.ASU.SP.ESM.00007 Issue 2.00 Page 39 of 79 3.6.6.3 MPS FCV Command Pulse Acquisition AVI-3579/GSE-SYS-740/T The MPS FCV Command Pulse Acquisition interface shall be provided by fixed loads (16x) simulating each of the FCV coils. AVI-3580/GSE-SYS-740/T The FCV Command Acquisition interface shall conform to the following specifications: [AD06] Table 3.5-36 (Flow Control Valve Interface Specification - Receiver Circuit Specification).
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Gaia GAIA.ASU.SP.ESM.00007 Issue 2.00 Page 40 of 79 3.6.6.4 MPS Gas Flow Sensor Simulation AVI-629/GSE-SYS-739/T The MPS Gas Flow Sensor Simulation shall simulate the presence of (16x) Gas Flow Monitor Sensors. AVI-644/CREATED/T The MPS Gas Flow Sensor driver shall conform to the following specifications: [AD06] Table 3.5-10 (Analog Driver Specification 2).
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GAIA.ASU.SP.ESM.00007 Issue 2.00 Page 41 of 79 Gaia 3.6.7 Fine Sun Sensor Interfaces Gaia comprises 3 Fine Sun Sensors (FSS) cross-strapped to each EIU. Each FSS provides (see Figure 3.6-3): • A Detector Voltage signal to the EIU, selected from one-of-eight multiplexed voltages; • Q1 - Q4 being representative of the sun incidence on each of the FSS detector quadrants • T1 - T4 being test voltages to allow closed-loop system testing with FSS HWIL.
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Gaia GAIA.ASU.SP.ESM.00007 Issue 2.00 Page 42 of 79 3.6.7.
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GAIA.ASU.SP.ESM.00007 Issue 2.00 Page 43 of 79 Gaia < 15.0 ms SpaceWire BUS Acq FSS Read FSS 00 FSS Address 1ms 1ms Digitize Q1 EIU Acquisition Detector Voltage Simulation 01 1ms Digitize Q2 TVAL TVAL Q1 Valid 10 1ms Digitize Q3 TVAL Q2 Valid 11 Digitize Q4 TVAL Q3 Valid Q4 Valid Figure 3.
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Gaia GAIA.ASU.SP.ESM.00007 Issue 2.00 Page 44 of 79 3.6.7.2 FSS HWIL Test When an FSS is HWIL, Test Voltages (T1 - T4) can be applied to the FSS. Selection of the Test Voltages is made by setting HIGH the A2 address line (from the EIU) to the FSS (see AVI-756). To prevent the need to adapt the EIU, or the CDMU Central Software, it is required to interrupt Address Line A0 between the EIU and the FSS and set the Line HIGH towards the FSS.
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Gaia 3.6.8 GAIA.ASU.SP.ESM.00007 Issue 2.00 Page 45 of 79 Gyro HWIL Stimulation The following requirements will be considered as TBC pending Gyro supplier selection. The requirements given are indicative of the interfaces and necessary functionality to be provided. Gaia comprises 3 Gyro Packages connected to the SVM 1553 BUS. Each Gyro package offers redundant rate measurement about a single axis.
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Gaia 3.6.9 GAIA.ASU.SP.ESM.00007 Issue 2.00 Page 46 of 79 Standard High Power Pulse Command Generation The Gaia EIU provides 48+48 Standard High Power Pulse Commands (SHP) for de-centralised power switching or reconfiguration of Spacecraft units. AVI-3599/CREATED/T To allow testing of the Spacecraft when the EIU is missing the Avionics SCOE shall provide SHP generation in place of the EIU.
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Gaia GAIA.ASU.SP.ESM.00007 Issue 2.00 Page 47 of 79 3.6.11 Alarm Simulation Interface Each Gaia CDMU provides monitoring capability of 8 Alarm inputs, as single ended switch-closure (SAC) inputs. AVI-1254/CDMU-793,CDMU-794/T Alarm Simulation shall conform to the requirements of: [AD06] Table 3.5-28 (Relay Status Acquisition Source Specification) Note: The SAC driver interface specification is identical to RSA.
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Gaia GAIA.ASU.SP.ESM.00007 Issue 2.00 Page 48 of 79 AVI-1674/EIU-782/T Relay Closure simulation shall conform to the requirements of: [AD06] Table 3.5-28 (Relay Status Acquisition Source Specification) AVI-1679/CREATED/T In open-loop test mode Relay state shall be commanded by local MMI or by the CCS (Test Procedure or Command Line). AVI-1680/CREATED/T In closed loop test mode, the RTS shall command the Relay state required. 3.6.
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Gaia GAIA.ASU.SP.ESM.00007 Issue 2.00 Page 49 of 79 3.6.16 SREM Simulation The Gaia Spacecraft includes a Spacecraft Radiation Environmental Monitor (SREM) unit, which interfaces to the EIU using a point-to-point RS422 link. AVI-1958/CREATED/ The Avionics SCOE shall provide simulation of the SREM as an interface to the EIU. AVI-1959/EIU-2294,EIU-2295/T The SREM interface shall acquire the following differential RS422 signals from the EIU in accordance with the requirements of: [AD06] Table 3.
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Gaia GAIA.ASU.SP.ESM.00007 Issue 2.00 Page 50 of 79 3.6.17 EGSE Synchronisation Pulse AVI-3332/CREATED/T For synchronisation to CCS, the Avionics SCOE shall provide a synchronisation pulse to the PLM End-to-End Simulator. AVI-3333/CREATED/T Generation of the synchronisation pulse shall be triggered ON from the local MMI or by command from the CCS (Test Procedure). AVI-3336/CREATED/T Generation of the synchronisation pulse shall be logged using the Event Log process (see Section 3.9.3).
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Gaia GAIA.ASU.SP.ESM.00007 Issue 2.00 Page 51 of 79 3.7 CCS Interface Requirements AVI-1575/CREATED/T The Avionics SCOE interface to the CCS shall be via the Network Interface (LAN) Card using TCP-IP protocols. AVI-3365/GSE-SYS-770/T Three distinct interface types shall be provided for Avionics SCOE to CCS data transfers, as defined in the following sections: 3.7.
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Gaia 3.7.2 GAIA.ASU.SP.ESM.00007 Issue 2.00 Page 52 of 79 SCET/HREF Interface AVI-3369/CREATED/T SCET/HREF data pairs (as defined in Section 3.5.4) shall be transferred to the CCS for SCET/UTC correlation every PPS. AVI-3370/CREATED/T The data pairs shall be transferred to the CCS in network byte order using the message format defined in Figure 3.7-1. 31……………….…………......………16 15……………...………...
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Gaia 3.7.3 GAIA.ASU.SP.ESM.00007 Issue 2.00 Page 53 of 79 TSP Interface AVI-3372/CREATED/T Transfer of all acquired synchronous and asynchronous data to the CCS (for Processing and Central Archive) shall utilise the Transport Sample Protocol over the EGSE LAN. AVI-3373/CREATED/T The Avionics SCOE shall be the TSP Provider, with the CCS the TSP Consumer.
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Gaia GAIA.ASU.SP.ESM.00007 Issue 2.00 Page 54 of 79 3.8 EGSE Real Time Network Interface Requirements AVI-1407/CREATED/T For closed-loop testing of Gaia AOCS, in the AVM Bench or PFM/AIT configuration, data values output to the Spacecraft, and data values input from the Spacecraft, shall be transferred from/to the Real Time Simulator (RTS).
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Gaia 3.8.2 GAIA.ASU.SP.ESM.00007 Issue 2.00 Page 55 of 79 Real-Time Network Definition & Responsibility This Section defines the general principles controlling the definition of the RTS to Avionics SCOE interfaces. The detail and performance are to be agreed with the RTS supplier as part of the co-engineering activity defined in Section 4.
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Gaia GAIA.ASU.SP.ESM.00007 Issue 2.00 Page 56 of 79 3.9 Application Software Requirements AVI-1465/CREATED/T The Avionics SCOE Application Software shall provide the following functions: Initialization of the SCOE Control & Monitoring Sessions Data Logging Command & Control Link to the CCS Avionics SCOE MMI 3.9.
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Gaia GAIA.ASU.SP.ESM.00007 Issue 2.00 Page 57 of 79 AVI-1906/CREATED/T The Data Log Schedule shall define data logging parameters by their Symbolic Name. AVI-1907/CREATED/T The Application Software shall provide a simple MMI tool for viewing and updating the Data Log Schedule and Data Log Init File. AVI-1515/CREATED/T The Application Software shall flag warnings to the System log for any unmapped Symbols or any Symbols mapped to undefined memory areas.
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Gaia 3.9.3 GAIA.ASU.SP.ESM.00007 Issue 2.00 Page 58 of 79 Data Logging and Archive Data logging is the process by which the Avionics SCOE archives data and information about the Simulation process. AVI-1913/CREATED/T Data shall be logged in accordance with the current data logging schedule.
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Gaia 3.9.4 GAIA.ASU.SP.ESM.00007 Issue 2.00 Page 59 of 79 Command and Control Interface AVI-1972/CREATED/R The Command and Control Interface (C&C) shall provide the interface between the Avionics SCOE (Application Software) and the CCS. AVI-1973/CREATED/ The C&C shall accept, decode and execute commands from the following sources: Avionics SCOE MMI CCS (Command Line) CCS (Test Sequence) AVI-1981/CREATED/T The C&C data exchange with the CCS shall utilize the message protocols defined in [AD01] Section 3.
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Gaia GAIA.ASU.SP.ESM.00007 Issue 2.00 Page 60 of 79 AVI-2021/CREATED/T In the remote closed-loop session, the C&C shall not allow adaptation of any Spacecraft Interface Parameter under direct control of the RTS (as defined during initialisation of the RTS Interface - see Section 3.9.1). AVI-2076/CREATED/T Parameter adaptation shall be user-definable as follows: • • • • • • One-shot (for a single acquisition). Timed (for a fixed number of acquisitions). Lock (freeze at current value).
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Gaia 3.9.5 GAIA.ASU.SP.ESM.00007 Issue 2.00 Page 61 of 79 Avionics SCOE MMI AVI-2078/CREATED/T The Avionics SCOE Application Software shall provide an MMI for Operator control of the SCOE. AVI-2079/CREATED/T All control processes identified in Section 3.9.4 shall be available under Operator control from the MMI. AVI-2080/CREATED/T The MMI shall provide displays of user-specified Spacecraft Interface Parameters (defined by Symbolic Name).
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Gaia 3.10 GAIA.ASU.SP.ESM.00007 Issue 2.00 Page 62 of 79 Avionics SCOE Cable Requirements AVI-2155/CREATED/T All interfaces external to the Avionics SCOE (Spacecraft Interfaces, EGSE Interfaces) shall be provisioned to an interface panel located at the rear (bottom) of the SCOE equipment rack. AVI-2162/CREATED/R Suitable interface cables shall be provided to connect the Avionics SCOE to the external EGSE and Spacecraft Interfaces.
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Gaia 3.11 GAIA.ASU.SP.ESM.00007 Issue 2.00 Page 63 of 79 Avionics SCOE Self Test AVI-2159/CREATED/T In order to verify the operational status of the Avionics SCOE equipment and functions, a self test facility shall be required. Note: This will not be used to verify any cable interfaces and will largely consist of internal self test routines. AVI-3355/CREATED/T It shall be possible to initiate an Avionics SCOE self test at any time to report the operational status of the equipments and functions.
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Gaia 3.12 GAIA.ASU.SP.ESM.00007 Issue 2.00 Page 64 of 79 Avionics SCOE Validation Test Avionics SCOE validation testing is defined as the process of verifying the functionality of the SCOE, with particular regard to meeting the specified requirements at the Spacecraft Interfaces. Thus, a successful validation test gives confidence that the SCOE can be connected to the Spacecraft and perform with expected results.
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Gaia 4 GAIA.ASU.SP.ESM.00007 Issue 2.00 Page 65 of 79 CO-ENGINEERING ACTIVITY Critical to the operation of the Avionics SCOE as a component of a distributed real-time system is the interface to the Real Time Simulator (RTS). The RTS subcontractor has been instructed to lead the design and development of this interface. The critical requirements identified in this document towards the development of this interface are the synchronisation of the RTS to the Avionics SCOE (defined in Section 3.5.
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Gaia 5 GAIA.ASU.SP.ESM.00007 Issue 2.00 Page 66 of 79 GENERAL DESIGN AND INTERFACE REQUIREMENTS AVI-2153/CREATED/R The design of the Avionics SCOE shall conform to the applicable requirements defined in the EGSE GDIR [AD02].
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Gaia 6 GAIA.ASU.SP.ESM.00007 Issue 2.00 Page 67 of 79 PA REQUIREMENTS AVI-216/CREATED/R The Avionics SCOE shall satisfy the applicable PA requirements as defined in the Gaia PA Requirements for GSE [AD03] and the Gaia SW PA Requirements for GSE [AD04].
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Gaia 7 GAIA.ASU.SP.ESM.00007 Issue 2.00 Page 68 of 79 VERIFICATION REQUIREMENTS 7.1 General AVI-2086/CREATED/R The contractor shall propose the verification program, which shall be subject to agreement by Astrium Ltd. AVI-2087/CREATED/R The verification process shall demonstrate conformance to applicable requirements. A satisfactory completion of the verification process is the basis for a contractual acceptance of the product by the customer.
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Gaia GAIA.ASU.SP.ESM.00007 Issue 2.00 Page 69 of 79 7.4 Verification Process AVI-2102/CREATED/R The verification process activities shall be incrementally performed at different levels and in different stages applying a coherent bottom-up concept and using a suitable combination of different verification methods.
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Gaia GAIA.ASU.SP.ESM.00007 Issue 2.00 Page 70 of 79 7.6 Specific Requirements On Tests 7.6.1 General AVI-2137/CREATED/R All specific support test equipment must be compliant with the intended purpose, within its useful life and calibration.
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Gaia 8 GAIA.ASU.SP.ESM.00007 Issue 2.00 Page 71 of 79 MAINTENANCE & SPARES AVI-2166/CREATED/R The subcontractor shall propose a maintenance and spares policy based on the number and possible location of the Avionics SCOE to be supplied (as defined in the Statement of Work). AVI-2167/CREATED/R A maintenance and spares policy shall be proposed to ensure the requirements for 'Reliability and Availability' (Section 5.11) and 'Maintainability' (Section 5.12) of [AD02]) are met.
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Gaia 9 GAIA.ASU.SP.ESM.00007 Issue 2.
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Gaia PCDU PCI PDHU PFM PLM PUS QM RD RF RID RT RTS S/W SCOE SD SOW STR SVF SVM TBC TBD TC TCP TM TRSP TTC UTC VPU GAIA.ASU.SP.ESM.00007 Issue 2.
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Gaia GAIA.ASU.SP.ESM.00007 Issue 2.00 Page 74 of 79 10 APPENDIX A Table 10-1 summarises the data interfaces between the Avionics SCOE and the Spacecraft Interfaces. The contents of this table will be TBC until final selection of Spacecraft Units.
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GAIA.ASU.SP.ESM.00007 Issue 2.00 Page 75 of 79 Gaia 11 APPENDIX B Table 11-1 summarises the data interfaces between the RTS (Models) and the Avionics SCOE (Spacecraft Interfaces). These data are transferred across the Real Time Network under the control of the RTS (DMA read/write cycles). The maximum update rate for the RTS is defined as 1/64 of the CSW Major Frame control cycle (nominally 64Hz). The rates herein specified are updates/Major Frame control cycle.
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GAIA.ASU.SP.ESM.00007 Issue 2.00 Page 76 of 79 Gaia Requirement/Section Cross Reference Page numbers are the pages where the sections start AVI-209 .............. 3.2 ...................12 AVI-210 .............. 3.1 ...................10 AVI-211 .............. 3.2 ...................12 AVI-212 .............. 3.2 ...................12 AVI-216 .............. 6 ......................67 AVI-221 .............. 3.1 ...................10 AVI-259 .............. 3.6.2 ................21 AVI-260 .............. 3.6.
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Gaia AVI-2092............. 7.3 ...................68 AVI-2102............. 7.4 ...................69 AVI-2103............. 7.4 ...................69 AVI-2120............. 7.5 ...................69 AVI-2132............. 7.5 ...................69 AVI-2133............. 7.5 ...................69 AVI-2134............. 7.5 ...................69 AVI-2137............. 7.6.1 ................70 AVI-2138............. 7.6.1 ................70 AVI-2140............. 7.6.2 ................70 AVI-2147............. 7.6.3 ..
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Gaia AVI-4021............. 3.6.1 ................18 AVI-4022............. 3.6.1 ................18 AVI-4054............. 3.6.1 ................18 AVI-4055............. 3.6.1 ................18 AVI-4058............. 3.6.1.1 .............20 AVI-4059............. 3.6.1.1 .............20 AVI-4060............. 3.6.1 ................18 AVI-4061............. 3.6.1 ................18 AVI-4062............. 3.6.1.1 .............20 AVI-4063............. 3.6.1.1 .............20 AVI-4064............. 3.6.1.1 ...........
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Gaia GAIA.ASU.SP.ESM.00007 Issue 2.00 Page 79 of 79 DOCUMENT CHANGE DETAILS ISSUE CHANGE AUTHORITY CLASS RELEVANT INFORMATION/INSTRUCTIONS DISTRIBUTION LIST INTERNAL EXTERNAL Configuration Management Astrium Ltd owns the copyright of this document which is supplied in confidence and which shall not be used for any purpose other than that for which it is supplied and shall not in whole or in part be reproduced, copied, or communicated to any person without written permission from the owner. GAIA.