Status of the DSP/ASPOC EM K. Torkar IWF/OAW, Graz, Austria August 2002
Photos of DSP/ASPOC EM01
Photos of DSP/ASPOC EM01
Deltas to FM Emitter Modules replaced by dummies with four heater elements (FM will have two) No pyro’s installed Mass, surface finish Some electronic components (RAMs, crystal, etc.) Electronic board layout IEL connector includes DWP interface (not used) Embedded software already modified from Cluster to DSP, but minor changes are still to come
Modifications of EM for DSP Embedded software modified Parameters and commands related to IEL with DWP/EFW deleted Feedback parameters, backup mode Parameters and TCs related to emitter control features added More flexibility for start-up of emitters Higher time resolution of voltage monitor Four additional commands for start-up of emitters Change of internal harness for emitter heaters Between J06 and motherboard For compatibility between new software and Dummy Emitter Modules from Cluster
Control File Definitions Control Files sent to IC in version 1.1, 01.08.2002 File Name Remark ASPOC_ON_MAIN Power-on on MAIN channels ASPOC_OFF_MAIN Power-on on REDUNDANT channels ASPOC_AFT_MAIN AFT on MAIN channels ASPOC_AFT_REDUNDANT AFT on REDUNDANT channels ASPOC_IST_MAIN IST on MAIN channels ASPOC_IST_REDUNDANT IST on REDUNDANT channels ASPOC_SFT_MAIN SFT on MAIN channels ASPOC_SFT_REDUNDANT SFT on REDUNDANT channels ASPOC_IEL_MAIN IEL test on MAIN channels ASPOC_IEL_REDUNDANT IEL test on REDUNDANT channels ASPOC_OFF Power-off (also emergency power-off)
Electrical Test Setup Overview
Electrical Test Setup Power Signal
Electrical Test Setup Spacecraft Simulator, EM01, oscilloscopes EM01, break-out box, oscilloscopes
Interface Verification Test Results The interface verification tests were successful. The electrical interfaces are compliant with EID-A. HK Data Inrush Current
Bench Test Verified telemetry, telecommand, housekeeping functions, and emitter filament supplies The bench test was successful.
Conclusion The DSP/ASPOC EM01 is ready for pre-integration