HMI Status at SDO PSR1 HMI Present Status

HMI Status at SDO PSR-1 – HMI Present Status – Changes Since SDO PER SDO Pre-Ship Review Part 1 - January 21 -22, 2009 –V_20090116 Hardware • Software – Blank Image Resolution – Results of Test Program January 21 -22, 2009 GSFC • • Environmental • Functionals & CPTs • Trend Data – Test Verification & Waivers – Verification Matrix – PFR Status – HMI Remaining Work – Readiness to Ship 23 - HMI - Page 1

HMI Instrument on SDO AIA • • Helioseismic and Magnetic Imager (HMI) studies the interior and magnetic activity of the Sun EVE X Y HMI Instrument – HMI Optics Package (HOP) – HMI Electronics Box (HEB) – Intra Instrument Harness – Flight Software Z HMI HOP SDO Pre-Ship Review Part 1 - January 21 -22, 2009 –V_20090116 HEB 23 - HMI - Page 2

HMI Integration HEB HOP EVE AIA Harness HMI SDO Pre-Ship Review Part 1 - January 21 -22, 2009 –V_20090116 23 - HMI - Page 3

HMI Status • HMI is ready for the Observatory to be shipped – Environmental tests successfully accomplished – CPTs successfully performed • • Optical performance is stable and meets requirements Alignments and co-alignments meet requirements – Present flight software will be flown • • Tested patch prevents blank images when HEB is hot; patch loaded at instrument turn on Minor constraints recognized and documented – Flight blankets have been installed • Minor blanket close out on primary alignment cube required after final CPT – HMI is currently in flight configuration with the following planned exceptions • • CCD & CEB Radiator covers Blanketing for spacewire cable Mission simulations will fine tune the operational plans and procedures HMI test bed at LMSAL has been, and will continue to be, quite useful – – Test flight observing sequences Develop and test flight operations procedures Trouble shoot anomalies Develop and qualify potential flight software patches or updates SDO Pre-Ship Review Part 1 - January 21 -22, 2009 –V_20090116 23 - HMI - Page 4

Changes Since SDO PER (March 2008) • Hardware changes – • HMI Software changes – FSW was delivered with known issues and software update planned after observatory integration – Developed a list of software updates with SDO Project to address the following – – • Minor thermal blanket adjustments to address solar entrapment concerns • Incorporate fixes to selected known discrepancies based on HMI DAIs • Incorporate corrections based on IV&V findings • Integrate high speed bus (HSB) resynchronization protocols Software was updated prior to TVac and subsequent CPTs & Functionals • Kernel acceptance testing performed at LMSAL in May 2008 • Kernel 2. 34 and FSW 10. 10 loaded on 8 June 2008 • Final FSW acceptance testing performed 10 -12 June 2008 on the flight instrument Developed and Tested Onboard Scripts for responding to FDCs and INCs • Camera Header Errors Recovery • Camera gain and offset reset Recovery Observatory Software changes – TSM/RTS developed and tested • Decontamination Heater Operations • Camera Link Detection & Recovery • Camera Header Errors Detection & Recovery • Camera gain and offset reset Detection & Recovery SDO Pre-Ship Review Part 1 - January 21 -22, 2009 –V_20090116 23 - HMI - Page 5

Environmental Tests • HMI passed all environmental tests as part of the Observatory test program – EMI/EMC (April 2008) • • Radiated susceptibility exceeded requirements in one preamp of one camera at 200 -300 MHz o No instrument susceptibility detected during Observatory level self compatibility test. o Large margin between observatory radiated emissions and instrument susceptibility Radiated Emission exceedence as seen at instrument-level EMC (see Waivers) – Mechanical (acoustic, shock, vibration) (May/June 2008) • Baseline performance reconfirmed – Thermal Balance (July 2008) • Thermal control system, including survival heaters, meet requirements • Thermal math model refined based on Thermal Balance data, and reviewed with project • Blank Image Anomaly observed during the first hot plateau (see following chart) – Thermal Vacuum (July/August 2008) • Successful qualification of the flight hardware • Instrument meets requirements at all temperatures • Camera intensity ratio changed with time in vacuum (see later chart re PFR-452) o Initial on-orbit bake-out/warm-up expected to eliminate this effect o Full Level-1 science achievable with bake-outs/warm-ups every 6 months even if effect is experienced on-orbit Instrument now qualified for flight SDO Pre-Ship Review Part 1 - January 21 -22, 2009 –V_20090116 23 - HMI - Page 6

Blank Image Anomaly Resolution • • Observed during HMI Instrument Thermal Vacuum testing at LMSAL – HEB hot operations caused some images to have values of all “ 0”s – Presumed caused identified as CIF memory Mode Register Set (MRS) command – Updated flight software was developed but was not thoroughly tested before delivery Blank images were observed again during the first hot plateau in the Observatory level thermal balance test. – Troubleshooting identified a means for clearing the blank image anomaly – A software patch was developed to remove the mode reset command • The MRS patch was extensively exercised during observatory thermal vacuum testing • Testing on the HMI test bed and subsequent FPGA analysis was able to identify the root cause. – • Hardware will be used as is with software patch that removes the MRS command – • Root cause has been determined as incorrect SDRAM address bits due to the FPGA timing skew across two clock domains FSW patch used as part of every instrument turn on since Mid-August 2008 Patch disables the built-in SEFI recovery function in the CIF – SEFI ground recovery procedure developed and tested – SEFI Rate – once per SDRAM every eight years in background environment, once per 30 days in flare – Three way voting logic requires two SEFIs to occur in the same bank without ground intervention before impacting science SDO Pre-Ship Review Part 1 - January 21 -22, 2009 –V_20090116 23 - HMI - Page 7

CPT Performance Status • Instrument performance fully characterized • HMI has performed 7 CPTs to date (three at observatory level) • Post Environmental CPT results – Analysis has been completed and is consistent with the established baseline • All CPT PFRs successfully resolved • Instrument Sequencer Operational statistics • # of Images Runtime – Since delivery (Dec 2007 – Dec 2008): 876, 276 486. 8 hours – Since software update (June 2008 – Dec 2008): 660, 020 366. 7 hours – Since software patch (Sept 2008 – Dec 2008): 115, 328 64. 1 hours Longest uninterrupted sequencer run since software update: 48. 5 hours – All expected images received and were complete Level 1 science performance requirements met SDO Pre-Ship Review Part 1 - January 21 -22, 2009 –V_20090116 23 - HMI - Page 8

Trending • Instrument performance trended, examples below • Mechanical/Non Optical Performance (All meet requirements) – Spin times for Cal/Focus wheels, shutters, and Hollow Core Motors – Mechanism delay time ranges (an internal parameter) – Voltages (primary and secondary) and currents – Boresight Alignment • • Optical Performance (All meet requirements) • Best focus • Field curvature • Distortion • MTF • CCD alignment • Flat Field stability • Particulate contamination • Scattered light performance All trends nominal; will continue trending through I&T and on orbit SDO Pre-Ship Review Part 1 - January 21 -22, 2009 –V_20090116 23 - HMI - Page 9

Mechanism Trending Summary Lockheed Martin GSFC Cold Hot All mechanisms meet requirements, variations due to temperature SDO Pre-Ship Review Part 1 - January 21 -22, 2009 –V_20090116 23 - HMI - Page 10

Test & Verification • Testing since Observatory PER – EMI/EMC – Waiver SDO-CCR-0982, SDO-CCR-1002 – Vibe/Acoustics/shock – No issues – CPT #2 – No issues – Post-environmental Instrument CPT and Observatory Functional –No Issues • HMI Verification Matrix status – All functional and performance requirements are met, with the exception of Waivers listed below and items shown on the following verification matrix slides • Waivers since PER: CCR Type SDO-CCR-0982 Waiver SDO-CCR-1002 Title Status Comments HMI EMI/EMC Test Radiated Susceptibility Exceeded Approved RS exceeded requirements in one preamp of one camera at 200 MHz by 3 -4 DN Waiver Observatory Radiated Emissions Exceedance Approved There is sufficient margin between emissions and susceptibilities SDO-CCR-1003 Waiver HMI HSB Electrical Requirement - Inner Shield Length Approved The data rate is met with the 0. 1 inch extra length SDO-CCR-1020 Waiver HMI Performance during 1. 0 V Ripple Voltage In Review Freq. 1 -29 Hz not tested in EMI/EMC SDO-CCR-1022 Waiver HMI Electronics Box (HEB) Stress Analysis not Completed at the Instrument Level In Review Bridge board stress analysis performed Loads test performed successfully SDO Pre-Ship Review Part 1 - January 21 -22, 2009 –V_20090116 23 - HMI - Page 11

Requirements Verification Status • 169 Closed • 294 Verified / 3 Open • Verified = Analysis complete, Data certified, Reports in completion Verification Activity No. Req. Verified Open Status Comprehensive Performance Test 21 21 0 As Run Test procedure in closure EMI/EMC/GND 28 27 1 GND shop order number to be linked Science Performance Analysis 35 34 1 Camera Gain Stability Report in progress Image Motion waiver in progress Software Acceptance 138 0 Document update Optical Requirements 10 10 0 STOP analysis complete Report in release Timing 3 3 0 Report being completed Thermal 19 19 0 As Run Test procedure in closure Electrical Design Inspection 43 42 1 Verify the single link data rate 297 294 3 TOTAL SDO Pre-Ship Review Part 1 - January 21 -22, 2009 –V_20090116 23 - HMI - Page 12

Verification Close-out • Single Link Data Rate Verification – Level 1 science data rate has not been demonstrated with a single HSB data link – A test has been defined to measure the date rate threshold – Maximum data rate with a single link will be determined during instrument testing, scheduled for the last week of January • Image Motion Waiver – Image motion resulting from tuning waveplate rotation exceeds a requirement detailed in the Instrument Performance Document – Review of the verification status discovered that the image motion requirement had not been completely addressed – This image motion requirement will be waived based on a better understanding of the observables calculation method • Camera Gain Stability Analysis – Camera Gain Stability is the end to end performance of the CCD and CEB system – Analysis of images taken during observatory thermal vacuum testing indicates that the gain stability requirement is being met – The formal verification report is in process of being completed SDO Pre-Ship Review Part 1 - January 21 -22, 2009 –V_20090116 23 - HMI - Page 13

PFR Status • Open (Red, Orange, Yellow) PFRs: PFR# Rating Test Description Disposition SDO-442 NSR set time Yellow No Step Request The NSR flag lead time is 300 - 500 ms (vs. the 400 to 600 ms requirement). Correctable by starting the camera clear 100 ms earlier. SDO-251 LVDS Yellow Integration LVDS resistance measurements off nominal Remaining open until the flight spares are repaired at RAL SDO-452 LED camera ratio Red TV The optical throughput using the HMI LED decreased during thermal vacuum testing Under review; anticipate use of decontamination heater and HOP bake-out on orbit SDO-380 Odd image Yellow CPT FSN 1198049 was not received as expected Monitor for reoccurrence PFR# Rating Test Description Disposition SDO-260 Processor reset Risk Flag Pre-ship B-Side processor occasionally resets when ISS is powered on • ISS relay closes properly, • CPU autonomously performs soft reset • Operator continues on with startup procedure (use as-is) • Red-flag PFRs: SDO Pre-Ship Review Part 1 - January 21 -22, 2009 –V_20090116 23 - HMI - Page 14

LED Camera Ratio in Vacuum (PFR-452) • Under vacuum aliveness testing, the ratio of the LED intensity as observed with the two cameras changes with time • The ratio recovers when brought back to room ambient temperature and pressure • These data and closer study of-LED based images show a reversible effect on the CCD (and perhaps the fold mirror); such as contamination • Magnitude of the effect seen during TVac would not impact Level 1 Science • Since effect is reversible there are operational workarounds – The initial 25 -day on-orbit decontamination period will dramatically improve effective venting of any contaminants – Any lingering/other effects can be managed by periodic warm-up of the CCD and fold mirror; approximately every 6 months (likely during eclipse season). • Will continue to investigate root cause possibilities, using a Fishbone Analysis to guide and document the investigation SDO Pre-Ship Review Part 1 - January 21 -22, 2009 –V_20090116 23 - HMI - Page 15

HMI Remaining Work • No Step Request timing verification – Test plan developed. Test needed to verify solution • Single link performance verification – Test plan being developed. Test needed to verify performance • LED camera ratio issue resolution • Open Verification items and open documentation SDO Pre-Ship Review Part 1 - January 21 -22, 2009 –V_20090116 23 - HMI - Page 16

Readiness to Ship • HMI is good to go with the following liens: – Resolution of PFRs requiring follow-up work – Verification Closures SDO Pre-Ship Review Part 1 - January 21 -22, 2009 –V_20090116 23 - HMI - Page 17

Backup Charts • SDO Pre-Ship Review Part 1 - January 21 -22, 2009 –V_20090116 23 - HMI - Page 18

PER Waiver Summary CCR Type SDO-CCR-0372 Deviation SDO-CCR-0811 Title Status In-Rush Current Requirements for HMI and AIA CEBs Approved Waiver HMI Shutter and Focus Wheel Static Imbalances Approved SDO-CCR-0813 Waiver HMI Induced Jitter Requirements in PJAB Approved SDO-CCR-0814 Waiver Surface Conductivity Requirement for Some HMI Parts Approved SDO-CCR-0816 Waiver Floating Metal Requirement for Some HMI Parts Approved SDO-CCR-0817 Waiver Thermal Cycling of Some HMI Component-level Parts Approved SDO-CCR-0819 Waiver HMI Oven Controller Operational Transients Approved SDO-CCR-0820 Waiver HMI EMI/EMC Decontamination Heater Operational Transient Approved SDO-CCR-0821 Waiver HMI EMI Conducted Emissions (CE) Exceedances Approved SDO-CCR-0822 Waiver HMI EMI Radiated Susceptibility (RS) Incomplete Exposure Approved SDO-CCR-0823 Waiver HMI EMI Radiated Emissions (RE) Exceedances Approved SDO-CCR-0824 Waiver HMI EMI Conducted Susceptibility (CS) Approved SDO-CCR-0834 Waiver HMI Heater Sizing Margin (Operational and HOP Survival) Cancelled SDO-CCR-0838 Waiver Reduction in the HMI Field of View Requirement Approved SDO-CCR-0856 Waiver AIA and HMI Shock Tests Deferred to Observatory Level Approved SDO-CCR-0883 Waiver HEB vibe under test due to notching of first mode resonance Approved SDO Pre-Ship Review Part 1 - January 21 -22, 2009 –V_20090116 23 - HMI - Page 19