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Solar Probe Plus FIELDS DFB Report Quarterly Management July 18, 2013

Solar Probe Plus FIELDS DFB Report Quarterly Management July 18, 2013. SPP Fields DFB. DFB Science: Finalized Sensor inputs; gain states, band-pass (except SCM – in process)

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Solar Probe Plus FIELDS DFB Report Quarterly Management July 18, 2013

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  1. Solar Probe Plus FIELDS DFB Report Quarterly Management July 18, 2013

  2. SPP Fields DFB DFB Science: • Finalized Sensor inputs; gain states, band-pass (except SCM – in process) • Defined: Coordinated Burst implementation, Digital Burst Memory (size & no of buffers and channels), Spectra and Cross-Spectra DFB Prototype: • Prototype design complete, layout review Tues 7/16, quick turn fab planned • All FPGA modules for prototype bring-up complete • Board will be used for most of early development and then for testing/characterization of Sidecar ASICs after moving to ETU board DFB ETU: • Schematic in process for Xilinx FPGA Daughter Card • FPGA development status shown in separate slides DFB Flight: • Received Sidecar ASICs; EIDP/workmanship deviation released this week, risk added • Continued EEE parts submittal to PCB for approval, no known issues at this time SPP Quarterly Review 7/18/13

  3. DFB Sidecar Risk 5 If the Sidecar experiences latent failure and/or has reliability issues, then the lack of a complete EIDP and respective workmanship could hinder the debug/troubleshooting, and have the potential to degrade performance and warrant possible redesign which could increase needed mass and power.Risk mitigationplan is to perform characterization and environmental testing on Sidecars. These parts have prior electrical burn-in testing hence characterization and environmental tests will demonstrate good rigor to retire the risk.  4 3 F-DFB01 Likelihood of Occurrence (probability) PM 2 1 1 2 3 4 5 Consequence of Occurrence (Impact) Risk rating: Probability 2, Impact 3; not likely to occur based on successful burn-in testing completed by vendor [GSFC/Teledyne]; consequences slightly higher based on possibility of reverting to backup plan of discrete ADCs. Proposed/heritage ADCs are not as rad-tolerant, require more board space (mass increases), more power, and/or could drive science return. Newer, more viable, ADCs identified but require radiation testing. High Medium Low (Criticality) SPP Quarterly Review 7/18/13

  4. DFB Block Diagram SPP Quarterly Review 7/18/13

  5. DFB FPGA Architecture SPP Quarterly Review 7/18/13

  6. DFB FPGA Development Status SPP Quarterly Review 7/18/13

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