[Isocops] IBEX Spacecraft Clock Issue Post-Contact Meeting Notes
NIgel Angold
nangold at princeton.edu
Fri Aug 27 14:18:34 EDT 2021
Attendees:
Nigel Angold, Reese Wynn, Carol Weaver, Jim Conway, Ryan Tyler, Ken
Fairchild, Bret Hautamaki, Tim Perry, Sheral Wesley, Eric Chubin, Mark
Tapley, Walker Cross
16:00-17:00 UTC HI01 contact activities:
* Spacecraft health check: nominal except for 1970/01:01:00:00:00 time
stamps
* Maneuver execution verified
* Sent 2 time-tagged commands and verified correct execution:
o @fct_tmsoh $time=2021/08:27:16:04:00
o @ahw_readSttlmhk $time=2021/08:27:16:05:00
* Monitored 2 previously loaded commands executing correctly onboard:
o @FCT_SetScState science $TIME=2021/08:27:16:16:33
o @CEU_LO_SCIENCE_MODE NORMAL $TIME=2021/08:27:16:16:35
* Set the spacecraft clock: no change
Ryan: looks like there's been a jump in the timestamp that MAESTRO can't
process.
Jim: Let's look at raw data.
Tim: we are unable to archive data after DOY 236.
Since the spacecraft is functioning nominally, no need for any immediate
action. No need to load orbit 540 ATS just yet.
Science: Lo and Hi teams both report nominal-looking orbit 538 data.
Future planning:
* 20:00 - 21:00 UTC HI01 contact added to dump SSR data and verify
correct processing of first ~30 minutes of orbit 539 arc a science data
* NG looking at FSW / tables to try to determine possible cause for
non-incrementing 1970 time stamp
* NG to look at content of raw packets
* SOC to look at how the data is time stamped
* NG and SOC to report back by email
* Follow-up telecon early next week
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