Electrical Ground Support Equipment Verification Test Support

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Electrical Ground Support Equipment Verification
Test Support

• Tom Leisgang
• Orbital Network Engineering
• tleisgang_at_orbitalnetwork.com

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EGSE Functions

• Provide common infrastructure
• Command and control, including test procedures
• Telemetry acquisition, archive, and distribution
• Health, status, and data quality monitoring
• Support data visualization tools
• Support subsystem engineering displays and EGSE
• Support subsystem development
• Trigger dataflow system
• Flight software testbed
• ACD, CAL, and TKR subsystems IT
• Support integration and test
• Verification Testing
• Qualification/Calibration Unit IT
• Subsystem receiving inspections
• LAT IT including environmental testing
• Mission Systems Integration Test

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EGSE Requirements

• EGSE requirements are traceable to several
  sources
• LAT Trigger Dataflow Specification
• LAT Flight Software Performance Specification
• LAT IOC Performance Specification
• LAT Performance Specification
• LAT Verification Plan
• LAT Integration Test Plan
• Subsystem Integration Test Plans
• LAT IOC Verification Plan
• SI-SC Interface Requirements Document,
  433-IRD-0001
• GLAST Mission Assurance Requirements,
  433-MAR-0001
• EGSE must support testing to verify requirements

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Dataflow Performance Verification Matrix

• Test /Measurement Types
• F Functional
• P/F Pass/Fail
• P Performance
• Ti Time
• DR Data Rate
• An Analog
• Dg Digital

• Verification Types
• T Test
• I Inspection
• A Analysis
• D Demonstration

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Dataflow Performance Verification Matrix
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Dataflow Performance Verification Matrix
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Dataflow Performance Verification Matrix
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LAT Electronics Subsystems
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LAT EGSE Functional Block diagram
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EGSE Operational Components

• DC Power
• Analog Measurement
• Voltage, Current, Resistance, Temperature
• Serial / Digital Communications
• LAT communications interfaces
• 1553 Data Bus
• Emulates spacecraft bus communications
• Signal Capture Processing
• Waveform measurement analysis
• Digital Timing
• Timing Analysis, LAT discrete commands
• SLAC Custom TKR/CAL/DAQ
• Subsystem test signal processing

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EGSE Software

• Drivers
• SLAC custom electronics
• COTS data acquisition products
• Interface emulators
• TEM
• Global trigger
• Event processors
• SIU
• Test system control software
• Configuration
• Script execution
• Data communications
• Test executive
• Test performance
• Reporting

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EGSE Test Configurations

• TKR/CAL
• Emulates TEM I/F Power
• TEM,ACD,EPU
• Emulates SIU, GT Power
• GT
• Emulates SIU, TEM,ACD,EPU Power
• SUI Housekeeping
• Emulations
• Spacecraft Bus I/F
• LAT Communications
• LAT Command Control