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PFP Instrument Status

PFP Instrument Status. SWEA has been delivered to ATLO, integrated with the spacecraft, and functionally tested. All PFP Instruments are now on the spacecraft and supporting environmental tests Issues: SEP Heater noise (from TAME)

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PFP Instrument Status

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  1. PFP Instrument Status SWEA has been delivered to ATLO, integrated with the spacecraft, and functionally tested. All PFP Instruments are now on the spacecraft and supporting environmental tests Issues: SEP Heater noise (from TAME) Heaters shielded. Waiting for an opportunity to test again with TAME 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 spontaneous shut-off during functional test Identified as a problem with the PFP limit monitor default settings Work around in place to poke corrected values into limit monitor table before powering up SWEA. Working on an EEPROM load to modify default table, to be loaded early April Bad housekeeping sent when associated instrument is powered off. Feature of PFP Flight Software

  2. SWEA Status Completed environmental tests, Pre-Ship Review Delivered to ATLO, integrated and tested Outstanding issues being monitored High Voltage Discharges. None since most recent rework, but do not have an identified root cause. Noise in counters. Saw a few times in SWEA thermal vac. Spontaneously came and went. Correlated with high voltage operation and maybe cold temperatures. Not seen in the last ~200 hours of operation.

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