NOAA GOES SATOPS Morning Report April 30, 2003 Day 120

NOAA-14 Power Supply Electronics (PSE) hardware autonomously switched the  mode controller and boost regulator from primary to backup.   At 0512z on JD119, NOAA-14 experienced a momentary 28v bus voltage in excess of 29 volts which triggered the autonomous switch.   Engineering analysis indicates degradation in shunt performance which caused the spikes on the  28V bus.  The solar array offset was changed to -55 deg and 28V bus performance is back to nominal.

DMSP

OPS45 rev 44703 from  FBKS-B at 1544z on April 29:  Changed SADLAG from +42 deg to +52 deg to shade the SSMT2 per SCCR 45-178.

OPS49 PRADS remains diverged  due to an unstable gyro 3 bias.

All other DMSP operations were nominal over the past 24 hours.

POES

NOAA-14 rev 42935 / W at 1218z on April 29:  At rise, NSPEMDCN (PSE mode controller) and  NPSEREGS (boost regulator) had switched from prime to backup.  Engineers investigating

NOAA-14 rev 42939 / F at 1857z on April 29:  Call up pass.  Moved solar array offset to -55 deg.  Switched low speed dwell channel to NPSEBUSV (Channel 296).

NOAA-15 rev 25782/ W at 2210z on April 29:  Data recorded on the 13M “A” primary ANT was extremely noisy when post-pass transfers were attempted.   The data was  re-transferred from the 13M “B” ANT and all data was clean and
complete.

NOAA-17 rev 4401/ W at 0331z on April 30:  Post-pass data transfers had to be transferred from the backup 13M “B” ANT because the primary “A” ANT .   FEP apparently hung-up and did not perform the cleanup following the pass.  Rebooting the
FEP subsequently corrected the problem.

NOAA-16 rev 13413/ W at 0610z on April 30:  G4B playback turned out to be a  mystery playback that locked on bit sync but not on frame sync and not data was recorded on the IMUX.   DTR4B will be replayed from the S/C on rev 13417.
 

GOES

On GOES-12 at 1601z on April 29,  TCS5 experienced a momentary loss of PCM and AGC telemetry causing schedule to suspend and loss of 1602 CONUS.

On GOES-12 at 1851z on April 29,  Image frame break, 4 scan lines lost due to loss of signal sync.

On GOES-9 at 2042z on April 29, schedule suspended during SOATS063 SSAA up load at dump.  ZATLEMODE commanded to format 126 INR checksum back to OS.  Imager start were missed at 2044z.

On GOES-9 at 2051z on April 29, schedule suspended during SAA enable with a INR checksum error.  Engineers built a new SSAA load.  This load was uploaded at 2244z, SAA was successfully enabled and INR checksum was OK.

On GOES-8 at 0959z on April 30, thrusters were fired to start westward from 75 W.  Estimated drift rate is 1.06 deg/day.

GOES-9 performance continues to be nominal.  It will support the JMA mission starting May 22.

Keep-out-Zones (KOZ) operations for GOES-East will continue through day 120.  Schedules for GOES-East and GOES-West (which can be used to track the day-to-day image deletions due to KOZ) can be found at: http://www.oso.noaa.gov/goes/koz-eclipse/koz-eclipse.htm