Alpha Magnetic Spectrometer NASA DOE

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Alpha Magnetic Spectrometer NASA / DOE
AMS-02 Avionics KSC Functional Integration
Test Review
Tim Urban / ESCG March 1, 2005
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KSC FIT Review Purpose
Alpha Magnetic Spectrometer NASA / DOE

• AMS-02 CITE Test
• Functional end-to-end test of AMS-02 / STS
  interfaces
• Commands created by STS test systems to AMS-02
  J-Crate
• AMS-02 housekeeping data to STS test systems
• AMS-02 PTCS Test
• Functional end-to-end test of AMS-02 / ISS
  interfaces
• Ground generated commands to AMS-02 J-Crate and
  ACOP
• ACOP generated commands to AMS-02 J-Crate
• AMS-02 science and housekeeping data to ACOP
• AMS-02 and ACOP down-linked science and
  housekeeping data

March 1, 2005
T. J. Urban / ESCG
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KSC FIT Review AMS-02 Hardware Tested
Alpha Magnetic Spectrometer NASA / DOE

• ACOP and J-Crate Engineering Models
• AMS-02 ground computers (POCC and TREK)
• AMS-02 PDS was unavailable KSC 28 VDC power
  supply used
• Flight-like cable design build-ups, including
  build-up with Flight Passive UMA cable harness
  verified cable designs

March 1, 2005
T. J. Urban / ESCG
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KSC FIT Review PTCS Test Schematic
Alpha Magnetic Spectrometer NASA / DOE
March 1, 2005
T. J. Urban / ESCG
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KSC FIT Review PTCS Test Block Diagram
Alpha Magnetic Spectrometer NASA / DOE
March 1, 2005
T. J. Urban / ESCG
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KSC FIT Review Test Participants
Alpha Magnetic Spectrometer NASA / DOE

• KSC FIT supported by the following organizations
• KSC
• AMS-02
• APO
• Collaboration
• MSFC JSC
• OIU
• MOD
• OZ
• Boeing CT

March 1, 2005
T. J. Urban / ESCG
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KSC FIT Review Test Team
Alpha Magnetic Spectrometer NASA / DOE
March 1, 2005
T. J. Urban / ESCG
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KSC FIT Review Test Results
Alpha Magnetic Spectrometer NASA / DOE

• KSC FIT considered an engineering development
  test, to verify interfaces and command / data
  structures prior to flight implementation.
• Two cable (pin-out) errors were found
• RS-422 cable for CITE and 1553 cable for PTCS.
• Cable modifications made and verified by test.
• These design changes will be implemented for
  flight.
• Minor issues with some data formatting and
  configurations.
• PTCS APS encountered loss of sync with HRDL.
• Characterized during FIT.
• KSC created IPR (problem report) no. IP000765.

March 1, 2005
T. J. Urban / ESCG
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KSC FIT Review Test Results (continued)
Alpha Magnetic Spectrometer NASA / DOE

• RT address was not as expected, which
  necessitated a software change in JROM to accept
  the correct RT.
• Load testing of data systems was not possible due
  to inadequate systems for both PDSS and GRS.
• Procedures developed and refined real-time with
  lessons learned.

March 1, 2005
T. J. Urban / ESCG
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KSC FIT Review Test Summary
Alpha Magnetic Spectrometer NASA / DOE

• STS CITE Tests
• All communications functionalities and interfaces
  verified.
• After FIT, AMS-02 support for KSC CITE was
  discontinued.
• ISS PTCS Tests
• All communications functionalities and interfaces
  verified.
• AMS-02 test team gained an improved understanding
  of ISS based command and data flow management,
  expecially
• All in all, the test was deemed a success.

March 1, 2005
T. J. Urban / ESCG
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KSC FIT Review Follow-On Tests
Alpha Magnetic Spectrometer NASA / DOE

• HRDL-APS Loss of Sync
• Further testing to quantify the KSC IPR IP000765
  and test solutions.
• Could be performed this year at JSC ISIL
  facility.
• AMS-02 PDS Unavailability
• Power quality test requirements, location and
  schedule being identified at this time.
• AMS-02 SSRMS Configuration Interconnect
  Verification
• Will verify interfaces through flight cable
  harnesses for PVGF to EBCS to AMS-02 PDS,
  possibly 4th quarter of 2005.

March 1, 2005
T. J. Urban / ESCG
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