1. Solar Probe Plus FIELDS Main Electronics Package iPER EMC Feb 2, 2017

2. FIELDS EMC Tests Tests on Power Lines include: Other tests include:
EMC test requirements are called out in the SPP EMECP ( , rev A, unsigned)
EMC Test Plans/Procedures called out in FIELDS Test Proc SPF_PROC_125_EMC (MEP CE tested in Mar 2015 SPF_PROC_025)
Scheduled ~ Feb 8, 2017, APL may wish to attend [EMECP_096]
Tests on Power Lines include:
Bonding & Isolation
Conducted Emissions CE01, CE03, CE07
Conducted Susceptibility, CS01, CS03, CS06
Radiated Emissions RE01, RE02 (at APL)
Radiated Susceptibility RS03 (at APL)
Power on/off Transients
Other tests include:
ESD Characterization (Section 4.11)
Magnetic Sniff Testing (Section 4.12)
Antenna Heater Lines Only (CS01, CS03)

3. FIELDS EMC Tests Test Articles Support Articles
Main Electronics Package (MEP)
MEP Harnesses
V1234 Antennas (or Preamps)
V1234 to MEP Harnesses V5
SCM F1*
MAGi and MAGo
Mag Boom to MEP Harnesses*
Support Articles
2 x Spacecraft Emulators (SCE1 and SCE2)
2 x Power Modules (PWR1 and PWR2)
2 x GSEOS Laptops
3 x Mu Metal Cans
SCM F1 is due to be replaced by SCM F2 for flight (est May 2017)
Mag Boom to MEP Harness is non-flight (APL makes flight Mag Boom-to-MEP harness)

4. FIELDS EMC Tests Test Details Power Inputs (4) at 32V
Operational & Survival Power to FIELDS1 = .315 A, .020 A
Operational & Survival Power to FIELDS2 = .220 A, .016 A
Encounter mode of operation only
Both FIELDS1 and FIELDS2 Powered and Taking Science Data
When Testing FIELDS1, FIELDS2 Powered as well, and vice versa
Sensors
Magnetometers in mu metal cans for Conducted tests (highest resolution)
Magnetometers on bench for Radiated tests as far from emitter as possible.
V1-V4 Antennas with 50 cm stubs & plasma impedance to input for all tests.
V5 with plasma impedance to preamp for all tests.
Bench
Area is 3.0 x 1.0 meter copper plate, components separated by 10 cm (min)
Cables arranged in serpentine fashion on back of the table
Contamination covers for transport and while not testing
ESD ground straps in use
Heaters & Actuators
No Heaters are Expected to Turn On during testing
No Actuators are Fired during these tests

5. FIELDS Electrical Block Diagram
Power Inputs

6. FIELDS Layout Sketch

7. EMC Facility

8. Backup

9. Main Electronics Package

10. V1-V4 Antennas

11. MAG (x2)
Here’s a photo of how radiated tests were done on MAVEN, with the sensor located near the wall of the chamber:
For radiated tests, as long as the sensor is > 1 meter away from the antenna during susceptibility tests, we should be good.  For the highest fidelity test, the portion of the cable that runs along the spacecraft deck could be laid close to the grounded copper table and the portion that is on the mostly-insulating boom would be isolated (as in the photo above).
Dave Sheppard, GSFC

12. V5

13. SCM

14. FIELDS 1&2 Power and SCE Rack

15. MAG Mu Metal Can