1. GLAST Large Area Telescope:
Gamma-ray Large Area Space Telescope
GLAST Large Area Telescope:
Integration and Test
Two Tower
Integration Readiness Review
Dept. of Integration, Facilities, Configuration and Test (IFCT)
Larry Wai – Dept. Manager
Tom Borden – Dept. Engineer
Brian Horwitz – Electrical Test Engineer
Eliazar Ortiz – Mechanical Vehicle Engineer

2. Presentation Outline
Test Readiness
EGSE Readiness
Facility readiness
Integration readiness

3. IFCT Test Readiness Two Tower I&T AIDS flow Test readiness
Test breakdown
Electrical test training status

4. Two Tower I&T AIDS Receive Tracker Flight Unit A
Install in Metrology Bay for Shimming & Assembly
Install tower in Test Bay
Receive Calorimeter, TEM/TEM PS Flight Units A
Test Single Bay Tower
Test CAL A & TEM/TEM PS A
Integrate Tracker A into Grid
De-Install Tower from test bay
Receive and assemble Grid
Integrate Grid onto Rotation Stand
Grid Optical Survey
Integrate CAL/TEM/TPS A into Grid
Single Tower Test in Grid
Integrate Tracker B into Grid
Integrate Cal/TEM/TEM-PS B into Grid
Two Tower I&T
Optical Survey
Receive Calorimeter, TEM/TEM PS Flight Units B
Receive Tracker Flight Unit B
Test CAL B & TEM/TEM PS B

5. AIDS example

6. Test Readiness

7. Calorimeter Test Suite Definitions
Limited Functional Test (LFT)
Pass/fail suite
15 minutes
Comprehensive Functional Test (CFT)
2 hours
Electronic Calibration Suite (ECS)
Charge injection data collection
online analysis
2 hours (short version), 6 hours (long version)
Muon Calibration Suite (MuC)
Cosmics data collection
12 hours (short version), 38 hours (long version)

8. Calorimeter Test Definitions
Calorimeter Post-Ship Test
CFT, ECS (short) +MuC (short)
16 hours
I&T Receiving Test
CFT
2 hours
Metrology Bay Test

9. Tracker Test Definitions
Tracker Receiving Test
Pass/fail tests
Muon data collection
Offline analysis
24 hours
Post-installation Tracker Test (in EM single bay)
2 hours

10. I&T Test Definitions
Single Bay Test (in EM single bay) 54 hrs total (40 hrs w/o E2E/SVAC/VDG)
Aliveness Test (15 min)
Calorimeter: CFT (2 hrs)
Tracker: Pass/fail tests (2hrs)
Trigger: Module internal timing, GEM timing alignment, subsystem TACK delays (36 hours)
End-to-end Test, 6 hrs
SVAC Data Collection (Bay 9 only, includes VDG) 8 hrs
Single Bay Test (in flight grid) 44 hrs total (4 hrs w/o SVAC)
SVAC Data Collection (Bay 9 only, no VDG) Day 1=16 hrs, Day 2 = 24 hrs
Two Bay Test (in flight grid) 104 hrs total
Calorimeter: CFT (4 hours)
Tracker: Pass/fail tests (4hrs)
End-to-end Test, 40 hrs
SVAC Data Collection (includes VDG) Day 1=16 hrs, Day 2 = 24 hrs, VDG=16 hrs

11. Electrical Test Training Status

12. Acceptance and validation process COTS BOBs Connector savers PDU
IFCT EGSE Readiness
Acceptance and validation process
COTS
BOBs
Connector savers
PDU
GASU
TEM/TPS
BPU
Test Stands
Test Procedures

13. EGSE TEST REQUIREMENTS: MD-00408
Configuration of EGSE shall be controlled via released documentation
EGSE shall be acceptance tested
EGSE shall be validated before use if it has been moved, reconfigured, or repaired
Validation shows that equipment is both ready for use and safe to use
High degree of confidence that equipment in that configuration has full operating capabilities
NASA guidance
Perform an EICIT and an SVT to ensure electrical safety
Trip points on circuit breakers, current limits in power supplies, shall be verified
While everything is validated, the scope of validation is tailored for each piece equipment type

14. EGSE REQUIREMENTS / RESPONSIBILITIES

15. STATUS OF EGSE– COTS Digital Multimeters (I&T responsible for these)
Calibrated Instrument
Validation Tests
Embedded within test procedure that calls them
STATUS: Meter purchased exceed maximum voltage for parts in some equipment, so we are re-procuring
Borrowing “Safe” DMM’s in the meantime
Hand Tools
Procured, cleaned, and placed in toolbox within cleanroom
ATE for Safe to Mate
All parts received - calibrated
Interconnection harness designed –in assembly
Rack tray’s sent out for machining – affected by safety stand down at SLAC

16. SCOPE OF EGSE TESTS – BOB’s ETC.
Cables and break out boxes (I&T is responsible for these)
Design documentation complete and released
Acceptance Tests include
Configuration inspection to assembly drawing
Interface integrity and cleanliness, inspection
Electrical continuity & isolation tests per LAT-TD-04325
Labeling with test due date, operator, QA
Validation Tests include
Verify Acceptance Testing has been performed and is not due for re-test
Configuration inspection
Electrical continuity tests, manual
Enter into validation log kept in cleanroom
Connector Savers
Tests: Interface integrity and cleanliness, inspection

17. STATUS OF BOB’s ETC All BOB’s designed, built, and tested
Inspection remains to be completed
Associated cables designed, built to shortage, and tested
The backshells for the 100 pin cables were back ordered and just arrived. Estimate assembly complete 12/1
Long versions of the Two Tower test cables for EGSE interconnections are awaiting the floor layout to determine lengths. Design, build, and test complete 12/31.
Acceptance and Validation Test Procedures in sign off cycle

18. STATUS OF CONNECTOR SAVERS
Determining connector saver needs
Coordinating with subsystems
All ELX boxes arrive with connector savers on each connector
CAL delivers mated to an EM TEM, so they are not needed
TKR towers arrive with connector savers that will be turned over to I&T
Determining who buys connector savers for the flight cables – submitted lien to program office to fund procurement
Complete determination by 11/24

19. SCOPE OF EGSE TESTS - PDU
EM PDU
Acceptance Tests include
Configuration inspection to LAT-DS-01696
Interface integrity and cleanliness, inspection
EICIT and SVT tests
Functional Tests in accordance with LAT-TD
Labeling with test due date, operator, QA
Validation Tests include
Verify Acceptance Testing has been performed and is not due for re-test
Configuration inspection
Electrical STM tests
Fill out paperwork and enter into validation log kept in cleanroom
Further validation tests performed within the test stand using load box

20. SCOPE OF EGSE TESTS – PDU LOAD
EM PDU LOAD BOX
Acceptance Tests include
Configuration inspection to LAT-DS-03400
Interface integrity and cleanliness, inspection
EICIT and SVT tests
Functional Tests in accordance with LAT-TD
Labeling with test due date, operator, QA
Validation Tests include
Verify Acceptance Testing has been performed and is not due for re-test
Configuration inspection
Electrical STM tests
Fill out paperwork and enter into validation log kept in cleanroom
Further validation tests performed within the test stand

21. STATUS OF PDU & LOAD BOX Documentation
PDU Assy, LAT-DS-01696, released
PDU Test Procedure, LAT-TD , released
PDU Load Box Assy, LAT-DS-03400, released
PDU Load Test Procedure, LAT-TD , released
EICIT Procedure, PDU, LAT-TD-04332, released
SVT Procedure, PDU, LAT-TD-04332, in work (12/1)
Delivered to I&T
Inspection, acceptance test, validation pending development of flight documentation

22. SCOPE OF EGSE TESTS - GASU
EM GASU
Acceptance Tests include
Configuration inspection to LAT-DS
Interface integrity and cleanliness, inspection
EICIT and SVT tests
Functional Tests in accordance with LAT-TD
Labeling with test due date, operator, QA
Validation Tests include
Verify Acceptance Testing has been performed and is not due for re-test
Configuration inspection
Electrical STM tests
Fill out paperwork and enter into validation log kept in cleanroom
Further validation tests performed within the test stand

23. STATUS OF GASU Documentation GASU Assy, LAT-DS-01611-09, released
GASU/Test Stand Test Procedure, LAT-TD , released
EICIT Procedure, GASU, LAT-TD-04260, released
SVT Procedure, GASU, LAT-TD-04382, in work (12/1)
Delivered to I&T
Inspection, acceptance test, validation pending development of flight documentation

24. SCOPE OF EGSE TESTS – TEM/TPS
EM TEM/TPS
Acceptance Tests include
Configuration inspection to LAT-DS-01643
Interface integrity and cleanliness, inspection
EICIT and SVT tests
Functional Tests in accordance with LAT-TD
Labeling with test due date, operator, QA
Validation Tests include
Verify Acceptance Testing has been performed and is not due for re-test
Configuration inspection
Electrical STM tests
Fill out paperwork and enter into validation log kept in cleanroom
Further validation tests performed within the test stand

25. STATUS OF TEM/TPS Documentation TEM/TPS Assy, LAT-DS-01643, released
TEM/TPS Test Procedure, LAT-TD , released
EICIT Procedure, TEM, LAT-TD , released
SVT Procedure, TEM, LAT-TD , released
EICIT Procedure, TPS, LAT-TD , released
SVT Procedure, TPS, LAT-TD , released
Two delivered to I&T
Inspection, acceptance test, validation pending development of flight documentation

26. SCOPE OF EGSE TESTS – BUS PROTECTOR
Acceptance Tests include
Configuration inspection to LAT-DS-
Interface integrity and cleanliness, inspection
EICIT and SVT tests
Functional Tests in accordance with LAT-TD-
Labeling with test due date, operator, QA
Validation Tests include
Verify Acceptance Testing has been performed and is not due for re-test
Configuration inspection
Electrical STM tests
Fill out paperwork and enter into validation log kept in cleanroom
Validation tests performed in accordance with LAT-TD-

27. STATUS OF BUS PROTECTOR
Requirements identified in EGSE Plan
Design assigned within ELX
Documentation needs be created
Awaiting schedule

28. TEM TEST STAND - CAL AND TKR TESTS
Acceptance Tests include
Configuration inspection
LAT-DS CAL
LAT-DS TKR
Interface integrity and cleanliness, inspection
EICIT and SVT tests
Functional Tests in accordance with LAT-TD
Labeling with test due date, operator, QA
Validation Tests include
Verify Acceptance Testing has been performed and is not due for re-test
Electrical STM tests
Fill out paperwork and enter into validation log kept in cleanroom
Perform tests described in LAT-TD , Para , Basic Test

29. STATUS OF TEM TEST STAND
Documentation
CAL Test Stand set up procedure, LAT-DS-02861, released
TKR Test Stand set up procedure, LAT-DS-03605, released
TEM/TPS Test Procedure, LAT-TD , released
EICIT Procedure, TEM, LAT-TD , released
SVT Procedure, TEM, LAT-TD , released
EICIT Procedure, TPS, LAT-TD , released
SVT Procedure, TPS, LAT-TD , released
Two delivered to I&T
Inspection, acceptance test, validation pending development of flight documentation

30. GASU TEST STAND – TESTS IN 1X1
Acceptance Tests include
Configuration inspection LAT-TD
Interface integrity and cleanliness, inspection
EICIT and SVT tests
Functional Tests in accordance with LAT-TD
Labeling with test due date, operator, QA
Validation Tests include
Verify Acceptance Testing has been performed and is not due for re-test
Configuration inspection
Electrical STM tests
Fill out paperwork and enter into validation log kept in cleanroom
Perform tests described in LAT-TD , Para , Basic Test

31. STATUS OF GASU TEST STAND
Documentation
Assembly and test procedure, LAT-TD , released
Validation test, run LAT-TD , released
EICIT Procedure, GASU, LAT-TD-04260, released
SVT Procedure, GASU, LAT-TD-04382, in work (12/1)
Delivered to I&T
Inspection, acceptance test, validation pending development of flight documentation

32. GASU/PDU TEST STAND – TWO TOWER
Acceptance Tests include
Configuration inspection LAT-TD
Interface integrity and cleanliness, inspection
EICIT and SVT tests
Functional Tests in accordance with LAT-TD
Labeling with test due date, operator, QA
Validation Tests include
Verify Acceptance Testing has been performed and is not due for re-test
Configuration inspection
Electrical STM tests
Fill out paperwork and enter into validation log kept in cleanroom
Perform tests described in
LAT-TD , Para , PDU-GASU Interface and electrical load tests
LAT-TD , Para , Basic Test

33. STATUS OF GASU/PDU TEST STAND
Documentation
Assembly and test procedure, LAT-TD , released
PDU Validation LAT-TD-02544, released
Validation test, run LAT-TD , released
EICIT Procedure, PDU, LAT-TD-04332, released
SVT Procedure, PDU, LAT-TD-04332, in work (12/1)
EICIT Procedure, GASU, LAT-TD-04260, released
SVT Procedure, GASU, LAT-TD-04382, in work (12/1)
Delivered to I&T
Inspection, acceptance test, validation pending development of flight documentation

34. TEST PROCEDURE STATUS
Test procedures are being written prior to completion of test plan - risk
CAL Test Procedure
Draft complete and in review
Draft must be updated with new input from CAL subsystem (received after procedure completed)
Complete one week after CAL final update
TKR Test Procedure
Draft was complete and in review three weeks ago
Draft was updated with new input from TKR subsystem (received after procedure completed)
Complete one week after TKR final update

35. TEST PROCEDURE STATUS (cont)
Single Tower Test
Draft in review in I&T
Affected by change to subordinate documents
References to be updated and test descriptions re-written
Complete 12/15
Two Tower Test
Draft begun
Complete 12/31
VG and CR Data Runs for LAT Integration

36. IFCT Facility Readiness
Status and upgrades

37. Facility Readiness Building 33 Clean Rooms functional and occupied
Monitoring system fully operational
Clean Rooms fully certified
Thermal chambers (2) functional and in use
Thermal Vacuum Chamber functional
All computers and oxygen sensors have battery back ups
Upgrades
15 ton crane to get two speed option
Stand alone hot water boiler
Extend back up generator lease
Upgrade environmental controls on clean room air handler

38. IFCT Integration Readiness
Mechanical integration training status
Tracker integration

39. Mechanical Integration Training Status

40. Tracker Installation Basic Procedure complete
New inputs from Tracker Group to be incorporated
Cone assembly process (done)
Cable bonding process (still in work)
Some Project decisions pending
Adjustment of Tower lean
Measurement of Tower location