PFP Instrument Status

• All PFP Instruments Except SWEA have been delivered, integrated, and tested; supporting environmental tests

• Issues:– EUV alignment shims not flat

• re-shimmed, CLOSED– SEP temperature sensor noise

• Temp sensors relocated; now quiet, CLOSED– SEP Heater noise (from TAME)

• Plan to shield heaters; works on EM, installed on FM this week?– MAG temperature monitor offset

• Monitor temperature calibration updated.– Missing Time Update Counter

• Spacecraft flight software fix planned– SASM/LPW timing offset

• Phase difference identified (on PFP side)• Identified an operational fix, which works on EM but has not yet

been tested on FM

SWEA Status

• High Voltage Discharges and instability in Thermal Vac• Reworked instrument to stabilize over temperature and

reduce the risk of discharges and reduce the risk of damage should a discharge occur

• Instrument reassembled and in test:– Test in calibration chamber with high voltage, no issues– Vibrated, no issues– Tested again in calibration chamber, no issues– In thermal vacuum, no problem with first few cycles

• High voltage powered on Cycle 5 (2/19) with no problems– Post-environmental; calibration next week

• Pre-Ship Review Friday 3/1; Delivery to LM Monday 3/4, ready for integration after bench test, as soon as the afternoon of 3/5.

SWEA In Calibration Chamber