GLAST LAT Project13 June 2005 LAT System EngineeringLAT Test Planning Meeting GLAST LAT GLAST LAT System Engineering Gamma-ray Large Area Space Telescope LAT Test Planning Meeting Rich Baun SLAC (650)

GLAST LAT Project13 June 2005 LAT System EngineeringLAT Test Planning Meeting 2 Agenda  LAT Level Test Sequence  Baseline LAT Level Test Sequence  Test Groupings  LAT Environmental Test Sequences  Redundancy Configurations

GLAST LAT Project13 June 2005 LAT System EngineeringLAT Test Planning Meeting 3 LAT Level Test Sequence Final Pre-TV Sine VibeEMI/EMC LL Mount Radiators Acoustic L T-CycleT-Bal Remove Radiators Weight CG Ship to Spectrum C L L Receive, Unpack L T L Pack LAT L CSSCS Baseline FCS at SLAC Ship to NRL L LL Pre Post-Axis CS/CERS/RE L Limited Performance Test Comprehensive Performance Test SVAC Test C S F T E TCS Functional Test EMI/EMC Emissions/Susceptibility Test L Limited Performance Test Comprehensive Performance Test SVAC Test C S F T E TCS Functional Test EMI/EMC Emissions/Susceptibility Test Rev date: 8 June 2005 Full LAT Functional and FSW/HW Interface Test Thermal Vacuum Chamber

GLAST LAT Project13 June 2005 LAT System EngineeringLAT Test Planning Meeting 4 Baseline LAT Level CPT Test Sequence Basic Function Validation Register Tests Subsystem Response with LAT wide Functions Cross-strap LPTs LAT Performance Baseline Muons E2E T&DF Muon Tests Abbreviated CPTs Operational Settings LAT Characterization Timing LCI Calibration SVAC Muons Full LAT SVAC Tests Initialization Infrastructure Tests = Redundancy tests required Baseline CPT

GLAST LAT Project13 June 2005 LAT System EngineeringLAT Test Planning Meeting 5 Baseline CPT - Test Groupings (1/4)  Basic Function Validation –Purpose Initialization –Validate FSW conducted LAT initialization sequence –Prove FSW interfaces with flight hardware Infrastructure –Validate all LAT operational functions such as command, telemetry, Configuration and LCI files, FSW File Management, et. al. Register Tests –Utilize FSW utilities to verify function of all LAT registers

GLAST LAT Project13 June 2005 LAT System EngineeringLAT Test Planning Meeting 6 Baseline CPT - Test Groupings (2/4)  Subsystem Response –Purpose Abbreviated Comprehensive Performance Test (CPTs) –Verify subsystem performance remains in spec in LAT wide environment –Demonstrate the complete health of each subsystem –Collect trend data –Run in only all prime and all redundant configurations Limited Performance Tests (LPTs) –Perform quick check of subsystem performance in cross-strapped redundancy configurations –Prove functional

GLAST LAT Project13 June 2005 LAT System EngineeringLAT Test Planning Meeting 7 Baseline CPT - Test Groupings (3/4)  LAT Characterization –Purpose Initial Instrument Functional –High-level validation of the LAT as an integrated scientific instrument Timing –Measure and adjust LAT wide timing Calibration –Calibrate the LAT using LCI and Muons Operational Settings –Determine/adjust LAT operational settings as precursor to LAT Level Performance tests

GLAST LAT Project13 June 2005 LAT System EngineeringLAT Test Planning Meeting 8 Baseline CPT - Test Groupings (4/4)  LAT Performance –Purpose Baseline Muons –Establish Instrument Level baseline performance with Muons E2E Muon Tests –Verify T&DF performance using Muons Full LAT SVAC Tests –Collect necessary data for analysis to verify LAT meets all requirements in the SRD

GLAST LAT Project13 June 2005 LAT System EngineeringLAT Test Planning Meeting 9 Post-Ship LAT Test Sequence Basic Function Validation Register Tests Subsystem Response with LAT wide Functions Cross-strap LPTs LAT Performance Abbreviated CPTs Muon Runs Initialization Limited Infra Tests = Redundancy tests required Post-Ship Limited Performance Test

GLAST LAT Project13 June 2005 LAT System EngineeringLAT Test Planning Meeting 10 Post-Ship LPT - Test Groupings (1/2)  Basic Function Validation –Purpose Initialization –Prove all LAT interfaces not effected by shipment Limited Infrastructure –Validate core LAT operational functions such as command, telemetry, and Configuration and LCI files Register Tests –Utilize FSW utilities to verify function of all LAT registers post-ship

GLAST LAT Project13 June 2005 LAT System EngineeringLAT Test Planning Meeting 11 Post-Ship LPT - Test Groupings (2/2)  Subsystem Response –Purpose Abbreviated Comprehensive Performance Test (CPTs) –Verify subsystem performance remains in spec post-ship –Demonstrate the complete health of each subsystem post-ship –Collect trend data, establish baseline at NRL –Run in only all prime and all redundant configurations Limited Performance Tests (LPTs) –Perform quick check of subsystem performance in cross-strapped redundancy configurations post-ship  LAT Performance –Purpose Muon Run –Establish Instrument Level post-ship baseline performance with Muons

GLAST LAT Project13 June 2005 LAT System EngineeringLAT Test Planning Meeting 12 Sine Vibe LAT Test Sequence Basic Function Validation Register Tests Subsystem Response with LAT wide Functions Cross-strap LPTs LAT Performance Abbreviated CPTs Muon Runs Initialization Limited Infra Tests = Redundancy tests required Sine Vibe Limited Performance Test  Sine Vibe LPT repeated 4 times, one pre Sine Vibe and once after each axis

GLAST LAT Project13 June 2005 LAT System EngineeringLAT Test Planning Meeting 13 Sine Vibe LPTs - Test Groupings (1/2)  Basic Function Validation –Purpose Initialization –Pre-Sine Vibe: Prove all LAT interfaces not effected by move –Post Sine Vibe Axis: Prove all LAT interfaces not effected by Vibe Limited Infrastructure –Validate core LAT operational functions such as command, telemetry, and Configuration and LCI files post move and vibe Register Tests –Utilize FSW utilities to verify function of all LAT registers post move and vibe

GLAST LAT Project13 June 2005 LAT System EngineeringLAT Test Planning Meeting 14 Sine Vibe LPTs - Test Groupings (2/2)  Subsystem Response –Purpose Abbreviated Comprehensive Performance Test (CPTs) –Verify subsystem performance remains in spec post move and vibe –Demonstrate the complete health of each subsystem post move and vibe –Collect trend data, compare to previous runs at SLAC and NRL –Run in only all prime and all redundant configurations Limited Performance Tests (LPTs) –Perform quick check of subsystem performance in cross-strapped redundancy configurations post move and after each axis  LAT Performance –Purpose Muon Run –Establish Instrument Level performance with Muons post move and after each axis

GLAST LAT Project13 June 2005 LAT System EngineeringLAT Test Planning Meeting 15 Post Radiator Installation = Redundancy tests required  TCS LPT –Contents TBD

GLAST LAT Project13 June 2005 LAT System EngineeringLAT Test Planning Meeting 16 EMI/EMC Test Sequence = Redundancy tests required Basic Function Validation Register Tests Subsystem Response with LAT wide Functions Cross-strap LPTs LAT Performance Abbreviated CPTs Muon Runs Initialization Limited Infra Tests EMI/EMC Test Sequence EMC CECS EMI RERS Post EMI/EMC LPT LAT Performance Basic Function Subsystem Response