1. FIELDS Keith Goetz Solar Probe Plus A NASA Mission to Touch the Sun
Solar Probe Plus A NASA Mission to Touch the Sun
17-19 May 2016

2. FIELDS Outline Block Diagram Changes Since Mission CDR
PDR/CDR RFA Status
Subsystem Status
Test Flow
GSE (Facilities and Equipment)
Product Assurance
Waivers & Deviations
Anomalies & PFRs
SOC status
Summary
Backup

3. FIELDS Instrument Sensors
V2 electric antenna
Unchanged from CDR
Five voltage sensors
Two Fluxgate magnetometers
One Search-Coil Magnetometer
Main Electronics Package
V3 electric antenna
MAGi, MAGo
SCM
MEP
V4 electric antenna
V5 electric antenna
V1 electric antenna

4. FIELDS Block Diagram Two Sides Each has a Spacecraft I/F
Each has a Magnetometer
Each has Antenna Biasing
Each has a Power Supply
FIELDS1 also has
Data Controller Board
Radio Frequency Spectrometer
Digital Fields Board
SCM Calibration Control
Absolute Time Sequencer
TDS I/F
FIELDS2 also has
Time Domain Sampler
DCB I/F
SWEAP I/F

5. FIELDS Major Changes since M-CDR
No science requirement changes have occurred
Changes since M-CDR
Reason for Change
Impact on Resources
Replace V1234 whip retention with APL WRS
Avoid resonances in whips during launch
Mass increase
V1234 antenna mechanical design (hinge angle, materials, harnessing)
Whip Retention System
Thermal model evolution
Minor mass increase
Change V1234 thermal characteristics and PA qualification
Increase MAG boom sensor heater allocations
Boom thermal balance test results
Power increase

6. FIELDS PDR/CDR RFA Status
Review
# RFAs
# Open
# Closed
# Concurred
I-PDR
20 (16/4) 20
I-CDR
32 (26/6) 3 29 27
SOC CDR 5
F-OR
11 (8/3) 1 10

7. FIELDS RFAs Not Yet Concurred
CDR RFA Title
Owner
Status
Progress 2
Scrub and update FIELDS ICDs
FIELDS
Open
Seven signed
One to sign
One in progress – 31 May 5
Evaluate impact of S/C dynamic response for V12342
APL
In progress 22
LNPS Loading Requirements
Closed 23
Grounding
In progress – 31 May 26
First Motion Deployment of V1234 after S/C-Level vibe
RFA #
FO CDR RFAs
Owner
Status
Progress 1
Close iCDR RFAs
FIELDS
Open
RFA #2 above

8. FIELDS LNPS FMs LNPS1 (above) and LNPS2 (below) are complete
Both are tested and fully functional
Both have 500+ hours of burn-in
TV heat rejection testing has been done
LNPS1 delivered to instrument I&T at UCB in April
LNPS2 will come with the TDS

9. FIELDS DCB/RFS FM1 Assembly is complete Digital tests complete
RFS analog section performance currently in calibration.
FPGA completed all simulations
All RFS FPGA spectral processing tests and anti-aliasing filtering successful
Boot PROM to be soldered in
Delivery to I&T mid-May

10. FIELDS DCB/RFS FM1 Flight Software
Verified RFS high & low frequency receiver (HFR & LFR) power spectra
Verified HFR select cross spectra with phase accuracy to 0.1 degree!
Verified LFR high resolution spectra
Verified burst power spectra
Compresses at 2.38 Mbps
Verified flash data storage & read back into telemetry
All FSW essential features are complete
Cross Spectral Analysis Nailed the Right Frequency and Coherence

11. FIELDS TDS FM TDS is partially complete Red circles on ADCs
Blue circle on PROM
Partially tested
Awaiting flight parts
AD7621 analog to digital converter is a commercial PEM
Testing complete
Screening complete
Qualification on-going
Lot jeopardy risk
Expect final assembly by 1 May and delivery to instrument I&T in early June

12. FIELDS AEB FMs
AEBs assemblies are complete (AEB2 on the left, AEB1 on the right)
Expect to deliver AEB1 to I&T in May (with the DCB)
Expect to deliver AEB2 to I&T in June (with the TDS)

13. FIELDS DFB FM DFB assembly is complete Red circle on SideCar ASIC
ADC module
Board level testing revealed a problem in SideCar ASIC
2 ADC channels w/ low impedance
Work-arounds exist to use as-is but root cause is unknown
Possible ESD
Current board – FM1 – to become FS
A new board is being assembled
With more attention to ESD possibilities
FM1 expected at UCB in mid-June
FM2 expected at UCB in early-July

14. FIELDS V1234 PAs FMs
V1234 preamplifiers (4) and spares (2) are complete
Awaiting testing

15. FIELDS Test Results High Fidelity EM Built Integrated Tested
Test-bed to be used throughout mission
FM will start I&T in May

16. FIELDS V1234 Antennas
EM antennas have been built and tested at temperature
Odeillo, SAO, ORNL
TV - hot and cold deploys
TB (3)
Vibe
FM fab in progress

17. FIELDS V5 FM Electronics board is assembled
MAG screening shows mechanical components are magnetically clean
Screening shows that EEE components carry ~.1nT at location of MAGo

18. FIELDS SCM EM
SCM assembly (EM at right) schedule at risk of delay due to personnel losses at Orléans and competition from other projects
FIELDS is working to retain skilled technician and keep development on track – FM coil testing shown below
Late summer delivery of FM is now planned

19. FIELDS MAGi/o FMs
MAGo electronics (above) and sensor (below) are complete
Instrument is tested and qualified
Instrument is calibrated, staked and conformal coated
Tested
Performance, Vibe, partial EMC
Instrument now has 100+ hours of burn-in
MAGo is ready deliver to instrument I&T at UCB
GSFC PSR completed 25 April
No actions
MAGi will be ready shortly

20. FIELDS EM Boom Thermal Balance
Sensor TBs have been done stand-alone
A full boom TB was done in January 2016
Worked very well
Found the boom to be at the cold end of its predicted range
Required somewhat more heat (MAGi, MAGo and SCM) than was expected
Heater authority as-is is ok
Heater allocation needs to increase
A repeat on the flight hardware is planned for March 2017

21. FIELDS Firmware/Software Status
Flight Software Status
DCB 97% complete
TDS 95% complete
DFB ASIC 100% complete
FPGA Resources
Aeroflex UT6325
% done
Total Utilized Logic Cells
Utilized Logic Cell Fragments
IO Cells Utilized
RAM/FIFO
Clocks
MAGi/o
100%
91.9%
57.3%
50.5%
18/24
1/9
RTAX-4000
% done
R-Cells
C-Cells
R+C Cells
RAM/FIFO
IO w/Clocks
DCB
99%
48.5%
62.5%
57.8%
71/120
457/840
TDS
95%
56%
68/120
249/840
DFB
77.1%
95.9%
89.7%
94/120
279/840

22. FIELDS Verification Schedule
We identified 858 requirements at level-4

23. FIELDS Test Flow
10/7/16
12/7/16
3/1/17

24. FIELDS Ground Support Equipment
Bench Testing
In constant use
Uses stimuli
Uses S/C emulators and GSEOS
Uses GSEOS to send commands
Allows script execution
Uses GSEOS to acquire data
Delivers data to users
Allows SOC access to data
Allows early development
Using real data streams

25. FIELDS SOC Status SOC planning is well along
Based on recent RBSP development
Evolves naturally from existing GSE data handling
Instrument operations
Evaluating recently released GSEOS software for the generation and transmission of commands
Working with the MOC and other instruments on the science planning process
Adapted an existing tool for choosing the FIELDS select data
Science Data Center
CDF data format, naming conventions, data archive directory structure, etc. established and consistent with previous missions
Data pipeline code builds off of GSE/EM test code, routines are under development
Coming milestones
FIELDS SOC support of FIELDS instrument I&T this summer
FIELDS SOC support of S/C I&T next year and beyond

26. FIELDS Issues, Anomalies & PFRs
Open Issues
MAG white-painted blankets
DCB flash memory parts – soldering of gold plated leads
Boom sensor heater power allocation vs authority
V1234 heater power in all cases
V3 heat from SPC
Anomalies & PFRs
DFB SideCar ASIC problem – new FM in production
GSE over-voltage – no damage

27. FIELDS Waivers and Deviations
Waiver/Deviation
W/D
Status
PWB plating thickness W
Approved
MAG heater power in-rush
Submitted
Tin whiskers in transformers
At PMPCB
Grounding in remote boxes
In preparation
Harness w/ primary, secondary and signals

28. FIELDS Summary Flight hardware is coming together
Problems are being worked
Flight firmware and software is ready for I&T today
Fully functional at the instrument level
Requirements are well understood – verification plan ready
Plans lead to fully qualified flight hardware toward the end of 2016
Schedule reserve exists – allowing for known risks and issues
FIELDS expects to deliver to S/C I&T in March 2017

29. FIELDS Backup

30. FIELDS V1234 TPS Shift Accommodation
V1234 antennas mount to spacers which mount to TSA structure
Spacers are designed to give equal illumination to all 4 antennas
Spacer size for V1 and V2 have changed to accommodate chamfer change
Spacer size for V1 and V4 will change to accommodate one of three TPS sizes (V2 and V3 are on the –X side and are unaffected)
Current plans call for spacer manufacture by APL

31. FIELDS Drawing Status
ALL drawings required for flight fabrication have been released
Unreleased drawings related to:
Flight firmware
Flight software
Final heaters

32. FIELDS FM Hardware Build Status
Board name
Layout
PWB Fab
Coupon testing
Assembly
Reported by
Updated
AEB1 ü
Dennis S
1/4/16
AEB2
DB FM (DCB)
5/30/16
Peter H
4/27/16
DB FM (TDS)
8/17/16
Keith G.
4/11/16
DB FM (DFB)
8/24/16
Mary
DCB/RFS
Dorothy
10/21/15
DFB (FM1)
3/20/16
DFB (FM2)
5/12/16
3/21/16
LNPS1
Keith
3/1/16
LNPS2
MAG1
Dave S
MAG2
PA1234
1/5/16
PA5
3/22/16
TDS
5/13/16

33. FIELDS Test Procedures
Source: SPF_IAT_010_TestProcListing.xlsx

34. FIELDS Ground Support Equipment
UCB I&T Facilities (214B)
Post-Transport Testing Area
Soldering/Cleaning Bench
GSEOS Computers, Displays
Signal Generators & Scopes
EM Main Electronics
Assembly & Test
EMC (CE) measurements
Test Platform for Ops
FM Main Electronics
Assembly
Initial Testing
End-to-End with 1 Antenna
Source: SPF_MGMT_020_Facilities/214B

35. FIELDS Ground Support Equipment
UCB I&T Facilities (320E)
FIELDS and SWEAP Built Class Clean Room
GSE Benches Outside
FM Antennas
Assembly and Test
FM Main Electronics
Post-Coat Re-Assembly
Final Testing
FIELDS-SWEAP Tests
Calibration w/ Antennas
TV Chambers Available (in 320)
Vibration Table (B20)
EMC in SF Bay Area
Source: SPF_MGMT_020_Facilities/320B

36. FIELDS Ground Support Equipment
Bench Testing
In constant use
Uses stimuli
Uses S/C emulators and GSEOS
Uses GSEOS to send commands
Allows script execution
Uses GSEOS to acquire data
Delivers data to users
Allows SOC access to data
Allows early development
Using real data streams

37. FIELDS Ground Support Equipment
S/C CPT Testing
Uses stimuli for CPTs
Allows coordinated timing tests
Using S/C GSE sync
Uses S/C and MOC
Uses GSEOS to send commands
Uses GSEOS to acquire data
Delivers data to users
Uses SOC to acquire data
Produces data products

38. FIELDS Ground Support Equipment
Flight Configuration
Uses S/C and MOC
Uses GSEOS to send commands
Uses SOC to acquire data
Delivers data to users
Produces data products

39. FIELDS Ground Support Equipment
MAG stimuli cans