WFC3
FSW/GS Splinter Meeting
3rd FSW/GS Splinter
November 8, 2001 @ Ball
(morning session, auditorium)
STScI Ground System Development Status:
WFC3
Wayne Baggett
11/08/2001
Wayne Baggett, STScI
1
WFC3
FSW/GS Splinter Meeting
3rd FSW/GS Splinter
November 8, 2001 @ Ball
WFC3 Ground System Development Status
(morning session, auditorium)
Development is on schedule:
 Phases 1 and 2 are complete (Macro definitions,
Initial aperture definitions, Full-frame UVIS
ACCUM, darks and bias)
 Phase 3 in progress (Full-frame IR MULTIACCUM,
darks are done, Lamp operations in work)
 Phase 4 is in detailed planning
Proposals with these completed modes can be entered into the
system and processed through to command loads (with some caveats)!
11/08/2001
Wayne Baggett, STScI
2
WFC3
FSW/GS Splinter Meeting
3rd FSW/GS Splinter
November 8, 2001 @ Ball
WFC3 STScI Phase Development Plan
(morning session, auditorium)
Phase 5 (7/1/02 – 12/31/02)
Phase 1 (7/1/00 – 12/31/00)
1. Macro Definitions
3. Aperture Definitions
14. Contingency Rework (Need only if problems
are found during Test Bench testing; will
displace either UVIS Subarrays or CTE
Monitoring if needed)
15.SMGT Preparations
4. Basic UVIS ACCUM Mode
16. SMOV Special Commanding
5. UVIS Dark and Bias Calibrations
17. UVIS Subarrays
2. Reconfigurations
Phase 2 (1/1/01 – 6/30/01)
Phase 3 (7/1/01 – 12/31/01)
18. CTE Monitoring
Phase 6 (1/1/03 – 6/30/03)
6. Basic IR MULTIACCUM Mode
7. IR Dark Calibrations
19. UVIS Binning
8. UVIS & IR Tungsten and Deuterium
Lamp Operations
Phase 4 (1/1/02 – 6/30/02)
9. UVIS & IR ALIGN Mode
10. SAA Contour Definitions
20. UVIS Post-Flash Capability
21. Autoimage Insertion for UVIS Prism
Operations
Phase 7 (7/1/03 – 12/31/03)
22. IR Automatic Post-SAA Darks
11. UVIS & IR Spatial Patterns
12. IR Bright Earth Avoidance
13. IR Subarrays (this should be in SMGT if
at all possible)
11/08/2001
Wayne Baggett, STScI
3
WFC3
FSW/GS Splinter Meeting
STScI Front-End Testing Process
3rd FSW/GS Splinter
November 8, 2001 @ Ball
(morning session, auditorium)

Each Subsystem (RPS2, TRANS, Commanding) does own Code
and Unit Test

Component testing conducted by independent test team

“End to end” testing conducted by the Flight System Engineering
Team (Commanding) via “Certification Proposal”
 Takes Certification Proposal through
RPS2
TRANS
SPSS
Commanding
11/08/2001
Wayne Baggett, STScI
4
WFC3
FSW/GS Splinter Meeting
STScI Front-End Testing Process (cont.)

3rd FSW/GS Splinter
November 8, 2001 @ Ball
(morning session, auditorium)
System Testing (aka “SMS Testing”) done on Ops benches
using the Certification Proposal:
 Tests
newly-implemented capabilities and regression
tests old capabilities; done at the end of each phase

Process proposal through front end systems

Generate command load(s) in PASS

Load and execute command loads on Ops bench

Collect telemetry and science data from execution

Process science data through OPUS when possible
11/08/2001
Wayne Baggett, STScI
5
WFC3
FSW/GS Splinter Meeting
Prerequisites for System Testing
3rd FSW/GS Splinter
November 8, 2001 @ Ball
(morning session, auditorium)
What’s needed for System Testing to occur:
 STScI ground system development of capability completed
 FSW development of capability completed (C&UT)
 FSW timing measurements done, analyzed, and incorporated
into ground system
 SW/Ops bench available
11/08/2001
Wayne Baggett, STScI
6
WFC3
FSW/GS Splinter Meeting
3rd FSW/GS Splinter
November 8, 2001 @ Ball
(morning session, auditorium)
To mitigate risk to our development schedule, STScI requires
System Testing to be performed at least three times prior to
SMGT (assumed to be 1 May 2003):

Early development of basic capabilities gets more testing

Both ground system and FSW are continually improved
 Ample
opportunity to react to problems before SMGT
This requires at least one year between the FSW/Ops bench
availability and SMGT!
11/08/2001
Wayne Baggett, STScI
7
WFC3
FSW/GS Splinter Meeting
3rd FSW/GS Splinter
November 8, 2001 @ Ball
(morning session, auditorium)
Why System Testing can’t be done now:

No recons in Commanding – get transitions done by
January 2002

FSW incomplete and slipping – IR detector support not
available until 3 May 2002

Ops bench is incomplete
Note: SM3B may impact STScI’s availability for about
two months
11/08/2001
Wayne Baggett, STScI
8
WFC3
FSW/GS Splinter Meeting
3rd FSW/GS Splinter
November 8, 2001 @ Ball
(morning session, auditorium)
The Ball FSW slip of 17 October 2001 has put less than one
year between the availability of FSW for System Testing and
SMGT.
 Limits bench test opportunities and increases risk to the
STScI ground system development

Mitigated by the inclusion of a new task in Phase 5 to allow
for rework – if needed this task will displace another task,
impacting the capabilities available for SMGT and launch
 We
need earlier FSW/Ops bench availability, or schedule
relief
11/08/2001
Wayne Baggett, STScI
9
WFC3
FSW/GS Splinter Meeting
3rd FSW/GS Splinter
November 8, 2001 @ Ball
(morning session, auditorium)
11/08/2001
Wayne Baggett, STScI
10
WFC3
FSW/GS Splinter Meeting
3rd FSW/GS Splinter
November 8, 2001 @ Ball
(morning session, auditorium)
Constraining dates (based on Ball schedule, 17 Oct 2001):
21 Jan 2002 – Bench with Mechanism simulator available
25 Feb 2002 – Mech Part 1 (Sofa, Shutter, Correctors) C&UT
26 Feb 2002 – Mech Part 3 (Lamps) C&UT
12 Apr 2002 – UVIS Detector C&UT
29 Apr 2002 – Mech Part 2 (CSM, FSM) C&UT
30 Apr 2002 – Service Functions C&UT
3 May 2002 – IR Detector C&UT
1 May 2003 – SMGT
11/08/2001
Wayne Baggett, STScI
11
WFC3
FSW/GS Splinter Meeting
3rd FSW/GS Splinter
November 8, 2001 @ Ball
(morning session, auditorium)
11/08/2001
Wayne Baggett, STScI
12
WFC3
FSW/GS Splinter Meeting
3rd FSW/GS Splinter
November 8, 2001 @ Ball
(morning session, auditorium)
11/08/2001
Wayne Baggett, STScI
13
WFC3
FSW/GS Splinter Meeting
3rd FSW/GS Splinter
November 8, 2001 @ Ball
(morning session, auditorium)
11/08/2001
Wayne Baggett, STScI
14