SOHO DAILY REPORT
Operations Day -- 348  1995
Mission Day 13
SOHO FLIGHT OPERATIONS TEAM, NASA/GSFC
Ref. #:   SH-FOT-DR-951215
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PASS #1 Madrid DSS66  08:40:00 13:36:00
PASS #2 Goldstone DSS16  15:35:00 23:07:00
PASS #3 Canberra DSS46  22:27:00 07:06:00
Pass#1 Summary
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Anomalies:
Pass Activties:
- SSR SEF resets (before and after SSR dump)
-Dump SSR
-SSR to record
Pass#2&#3 Summary (combined long pass)
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Anomalies:
-  15:55 Start of MDI delayed load uplink
   -- Received numerous S/W anomaly messages during uplink
   -- Uplink was halted and investigation ensued
   -- Modify BARM timeout to 60 seconds and bit bias to 2000
  -- Load uplinked successfully during later pass
- SSU SEU etected at 16:15
   -- Guide star was lost
   -- When the anomaly occurred the trigger criteria was set at 2 SEU counts
per 15 seconds
  -- Performed CS-11: SSU-SEU recovery script
- ACU Rejects Manual Starmapping commands/SSU Reset CMD
   -- Tried to cmd manual star map after 1st slew to acquire Guide Star
   -- Command was rejected at ACU twice(cmd failed once and resent)
   -- Tried sending SSU Reset CMD that also failed
   -- All commands sent were verified w/ Matra experts prior to send
- SSU SEU etected at 349/0434
   -- Guide star was lost
   -- When the anomaly occurred the trigger criteria was set at 2 SEU counts
per 1 second
  -- Performed CS-11: SSU-SEU recovery script
   -- Star-mapping download delayed to later pass for FDF support
Activity Summary:
-SSR playback
-Perform mini-slew to nominal roll attitude (star-mapping failed after slew)
- Performed 2nd slew to nominal roll attitude(successful)
- Performed roll trim (14 arcsec) to nominal roll attitude
-Competed Post-Momentum Management sequence - Return to normal mode
-CELIAS turn-on sequence executed
-Cleared out COBS Anomaly Table
-OCD#102, reset the SEU timeout to 2/1sec
-SSR SEF resets (0014z)
-Dumped group 15
-SSR to record mode
-OCD*s 102, 82, 99 completed
--End of report--