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HMI First Sun Test Review November 28, 2005 PowerPoint Presentation
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HMI First Sun Test Review November 28, 2005

HMI First Sun Test Review November 28, 2005

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HMI First Sun Test Review November 28, 2005

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  1. HMIFirst Sun Test ReviewNovember 28, 2005

  2. Agenda

  3. Objectives • Objectives of the sun test review: • Verify that planned tests meet the verification requirements appropriate for the sun test. • Show that all hardware, software, facilities, procedures, and personnel are available and prepared to support the test. • Objectives of the sun test: • Learn how to operate the HMI optics package. • Learn how to characterize/calibrate the instrument. In some cases, obtain initial calibration parameters. • Discover gross errors in design or workmanship of the HMI optics package. • Determine position of focus to set the final shim on the telescope secondary lens. • Results of the sun test will directly feed into the plans and procedures for the formal test and calibration series. • The sun test does not provide formal verification of any requirements.

  4. Align Align Align Align HMI Integration and Test Flow Nov 05 Cnfg I Initial Sun Tests Cnfg II Roll Over CIF BBHEB Develop SW Accpt Test In Air Calibration HOP w/BB Functional Test Mar 06 Apr 06 Flight CCD DM Camera Install ISS BB HEB (no CIF) DM CCD, DM Camera No ISS Install Flt Cameras Alignment Thermostats HOP Vibration Prep Sine Vibration Random Vibration Quasi-static Loads Acoustics HOP w/BB Functional Test May 06 Complete Flight HOP Only - Functional Test w/ BBHEB Repeated for X-, Y-, and Z-axes Cnfg Flight HEB FT Flight Sftwr Acct Test CPT Special Test EMI/EMC Prep Aliveness Test EMI/EMC HOP&HEB Functional Test Flight HEB HEB Flight HEB FT HEB Vibration Prep Sine Vibration Random Vibration Quasi-static Loads HEB FT Jul 06 Aug 06 Conformal Coat Repeated for X-, Y-, and Z-axes TV/TB Prep Aliveness Test Vacuum Calibration Thermal Balance Thermal Vacuum CPT Special Test Delivery to GSFC 40D Slack Sept 06 Nov 06 = Transport HOP = Sine signature

  5. HMI Instrument Configuration 1 Brassboard Electronics Box Brassboard Cables Optics Package: Non-flight hardware Flight CCD with flight focal plane housing (one location) DM Camera (one location) Optics Package: Flight hardware Structure with alignment mechanism, legs, and mounting brackets Telescope assembly: front window filter, primary lens, secondary lens, mounting bracket Polarization selector and wavelength tuner (seven HCMs) Harness (mechanisms only) ISS mirror and beam-splitter Oven assembly BDS beam-splitter and fold mirror CCD fold mirror (two) HMI Instrument Configuration 2 Brassboard Electronics Box Brassboard Cables Optics Package: Install flight items Focal plane (two) ISS limb sensor and preamp box Oven controller electronics box More harness Finish heater routing Install vents Oven thermostat Replace Lyot elements one and two Replace NB Michelson HMI Instrument Test Configurations • Tests • ISS Testing • CCD Alignment • In-air calibration • HOP Vibration testing • Tests • Initial Sun Test • Initial Functional Tests

  6. HMI Instrument Flight Configuration Fight electronics box Flight Harness Flight HOP HMI HEB Flight Configuration Conformal coated boards in HEB Flight Harness Flight HOP HMI Instrument Test Configurations • Tests • Software Acceptance Test • Flight CPT • EMI/EMC Test • Tests • HEB Vibration Test • Vacuum Calibration • Thermal Balance and Thermal Vacuum

  7. Optics All flight optics in place except as noted below. Michelsons are likely to be replaced with a better set after the sun test. Lyot elements 1 and 2 are likely to be replaced with better elements after the sun test. Telescope not set in final focus; final focus position to be determined from sun test data. No ISS actuation. Camera and Detector DM camera electronics and flight CCD with forward flight focal plane housing and flight-like headboard. No side camera. Thermal Flight oven and preamp, ETU oven controller. No operational heater thermal control. No MLI. Mechanisms All seven flight hollow core motors with flight optics. Both flight focus / calibration wheels with flight optics Flight alignment legs. Flight shutters. No front door mechanism. Mechanical Flight structure with legs and mounting brackets Non-flight HOP cover; non-flight covers in place of radiators and vents. Cables Flight HCM, shutter, and cal/focus wheel harnesses; non-flight alignment leg harness Non-flight CCD flex cable. Brassboard intra-instrument harness. Brassboard HEB No CIF. Environment Ambient temperature and pressure Test Article Configuration for Initial Sun Test

  8. Test Requirements – Jesper Schou

  9. Sun Test Overview – Jesper Schou • Test prerequisites • Pre-test analysis • Measurements • Discuss measurements to be recorded during the test. Explain how the measurements will be used to verify that test objectives are met and how they will be used to provide quantitative pass/fail criteria. • Go/no go criteria • State the readiness criteria for conducting the test. What measurements, test conditions, or other parameters are absolutely required to perform the test? What parameters might be compromised? • Pass/fail criteria • Provide detailed criteria and/or methodology for declaring the test was a success or a failure. If the criteria involve processing data, provide a detailed procedure for processing the data. • Schedule • Provide a summary test schedule, including key dates for significant events.

  10. Lessons Learned from MDI & FPP – Rock Bush, Ted Tarbell • Have several “standard” stimulus setups, with more than one person knowing how to change from one to another. • Keep a log of which setup is used for every test and any deviations from “standard” • Test and cal procedures evolve by trial and error: need prompt (not necessarily real time) data analysis and STOL/procedure editing. • Have scientists analyze the data who are not involved in collecting the data. • Decide on measurements for trending and start early; keep standard, clear tables/web sites of results. • Need quick look (almost real time) viewing of images during testing: interactive X, Y, I <I>, etc. measurements

  11. Sun Test Plan – Ryan Moskal • Equipment • Flow of testing • Procedure (logs, shop orders, etc.) • Facilities • Provide a description of the required test facility, including floorplan. • Describe the characteristics and capabilities of the test facility and required support equipment. (lasers, interferometers, stim tel, PCU, heliostat, etc.)

  12. Sun Tests • Prepare a plan for each of the following tests, using the template on the following chart: • Image Quality • Distortion – Jesper • Image scale – Jesper • MTF – Jesper • Field curvature and focus – Jesper • Ghost images – Rock • Scattered light – John • Flat field – John • Linearity – Ted • Contamination – Jesper • Image offset and distortion – Rock • Filter Transmission – Rock • Wavelength dependence • Spatial and angular dependence • Throughput • Contrast • Polarization – Jesper • Observables – Todd • Doppler • Line of sight • Vector • Alignment Mechanism – John • Range and step size • Repeatability

  13. Image Quality: Linearity – Ted • Purpose • Determine the calibration necessary to correct for CCD response non-linearities, and determine the exposure limit for calibratable response. • Requirements • Measure the CCD response as a function of exposure time, from dark to full-well. • Description • Flood illuminate the CCD with the lamp source via the stim tel. (Although not available in the sun test, would cal-mode work better for this?) • Measure stability of lamp • Test configuration • Describe the test setup. State how the test article, test facility, instrumentation, and test equipment will be configured and checked out prior to the actual test. Include the light input. • Test plan • Describe the operational status of the test article during testing and the requirements for performance measurements before, during, or following the test. • Data analysis • Tools, utilities • Procedure • STOL status • Shop order status (created from Ryan’s template) • The test timeline • Defined the required test personnel and their roles and responsibilities

  14. Alignment Mechanism: Range and Step Size – John • Purpose • Requirements • Description • Test configuration • Describe the test setup. State how the test article, test facility, instrumentation, and test equipment will be configured and checked out prior to the actual test. Include the light input. • Test plan • Describe the operational status of the test article during testing and the requirements for performance measurements before, during, or following the test. • Data analysis • Tools, utilities • Procedure • STOL status • Shop order status (created from Ryan’s template) • The test timeline • Defined the required test personnel and their roles and responsibilities

  15. Alignment Mechanism: Repeatability – John • Purpose • Requirements • Description • Test configuration • Describe the test setup. State how the test article, test facility, instrumentation, and test equipment will be configured and checked out prior to the actual test. Include the light input. • Test plan • Describe the operational status of the test article during testing and the requirements for performance measurements before, during, or following the test. • Data analysis • Tools, utilities • Procedure • STOL status • Shop order status (created from Ryan’s template) • The test timeline • Defined the required test personnel and their roles and responsibilities

  16. Test Plan Template • Each sun test gets its own set of charts, including as a minimum: • Purpose • Requirements • Description • Test configuration • Describe the test setup. State how the test article, test facility, instrumentation, and test equipment will be configured and checked out prior to the actual test. Include the light input. • Test plan • Describe the operational status of the test article during testing and the requirements for performance measurements before, during, or following the test. • Data analysis • Tools, utilities • Procedure • STOL status • Shop order status (created from Ryan’s template) • The test timeline • Defined the required test personnel and their roles and responsibilities

  17. Data Processing – Jesper Schou • Science/calibration analysis • Image processing • Real-time data turnaround needed? • Facilities

  18. Hardware Readiness – Kirkpatrick • Alignment status • Camera • Safe-to-Mate • GSE • PCU • Air-to-Vac Corrector • Air-to-vac corrector lens used with either the heliostat or the Stim-Tel to produce images in focus at the location of the CCD with the instrument in ambient pressure. • Stim-tel • Heliostat • Other GSE

  19. Software Readiness • Topics • Flight Software • GSE • Camera • STOL • Tables

  20. Flight Software • Mechanism control software and state machines in place for • HCMs (3 Polarization Selector mechanisms and 4 Wavelength Tuning mechanisms) • Shutters • Calibration/filter wheels • Two mechanism control software elements being completed • Alignment legs (done but possible problem with limit switches) • Front door mechanism (not needed for first sun test, problem with open/closed switches) • Sequencer • Works with hard-coded framelist • Framelist table upload in development • Initial tests will not use sequencer

  21. GSE and Camera • LMSAL EGSE In place and ready • Release 6.6 development • RAL GSE Camera Control Interface • PCU Control • Stimulus telescope intensity control (not done) • RAL GSE In place and ready • Camera • Development model camera control through RAL GSE from LMSAL EGSE STOL • Work-around for lack of Camera InterFace (CIF) board in HMI brassboard • Images have been taken through this interface and provided to Stanford for data analysis/processing • Header content needs review and expansion

  22. Sun test STOL list NameStatus • hmi_focus Done • hmi_pl_wobble Written, not tested • hmi_wl_wobble Written, not tested • hmi_pcu_ss_moda Written, not tested • hmi_pcu_ls_modc Written, not tested • ral_menu Works, needs revision • ral_tp Works, needs revision • hmi_picture_loop Not written • hmi_set_all_hcm_zero Needs encoder values to set HCM to • hmi_set_nom_pos Needs nominal positions • hmi_move_legs_to_center Not written • hmi_find_center Written, needs review/demonstration • hmi_set_position Not written • hmi_dop_seq5 Not written, use wl_wobble_10 table • hmi_detune27 Not written, make table?

  23. Tables NameStatus • cal_focus Done • pl_wobble_10 Written, not tested • wl_wobble_10 Written, not tested • pcu_ss_moda Discuss with Greg Card, Rock, Jesper, Ralph & RogerC • pcu_ls_modc Discuss with Greg Card, Rock, Jesper, Ralph & RogerC

  24. Documentation • Test Plan • This review chart package, together with a cover sheet signature page, constitutes the the Sun Test Plan (HMI01567). • Procedures (shop orders) • The test procedures are documented in the shop orders under which all tests are carried out. No test may proceed without a signed shop order. • Shop orders signed off by: Test lead; system engineer; deputy program manager; mission assurance • Applicable Documents • HMI I&T Plan, HMI Contract Performance Spec, HMI Calibration Plan, HMI IPD • Test Reports • Each test lead will prepare a test report and attach it to the shop order associated with the test. • Test reports explain results related to requirements and identify trended data. • For any failures, discuss root cause, corrective action, and plan for retest. • All test reports related to in-air calibration items are due Feb 06. • All test reports related to functional test items are due Mar 06. (To support pre-environmental test review). • All remaining test reports due Apr 06.

  25. Concerns & Issues – All