ACE Weekly 08/12/05 - 08/18/05

All ACE spacecraft subsystems are performing nominally.

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Orbit/Attitude:

	Type         Attitude
	Date         08/18/05
	DOY          230 2005
	Thrusters    2R 4R+ 4R-
	Duration     9:59 min
	Start Time   16:48:04z
	Stop Time    16:58:03z
	Firing       51 pulses

The next attitude maneuver is scheduled for Thursday 08/25/05.

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OCRs:

None

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Ongoing Activities:

Space Link Extension (SLE) - Development continues within the TDF
configuration.  The DSN/Developer test with DTF-21 is scheduled for
09/01/05.

ROBOTT - Version 1.0 was installed on String 1 on Monday 08/15/05 for
Operational Testing.  The software will be used for lights out operations
starting Saturday 08/20/05

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Extra Activities:

DOY 227 (08/15/05) - SSR B 30 Telemetry Sections downlinked.  No new Single
Bit errors (correctable) found.

DOY 228 (08/16/05) - DOY 231 (08/19/05) - All 4 DSN passes were changed due
to the GOES-N launch slip.

DOY 228 (08/16/05) - No impact to operations occurred from the preventive
maintenance for UPS-13 in Bldg 14.

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Anomalies:

DOY 225 (08/13/05) ACE Anomaly G05-0106  C&DH B not commanded
Incorrect CMD Mod Index (0.77dB instead of correct value of 1.69dB) was
sufficient for C&DH A to be commanded but not C&DH B.  Procedures continued
execution, as designed, after C&DH B commands were not accepted so that SSR
dumps and state of health checks could be completed.  C&DH B needs to be
commanded once every 80 hours to avoid antenna reconfiguration.  C&DH B was
successfully commanded on the next day (DOY 226).  DR#N103032
IMPACT:  47.5 hours between C&DH B commands on DOY 224 and DOY 226.


DOY 225 (08/13/05) ACE Anomaly G05-0107  Offline did not execute
ROBOTT software did not execute the offline script used for report
generation, data analysis and file maintenance.  The ROBOTT developers have
been notified.
IMPACT:  Report generation, data analysis and file maintenance was completed
on Sunday (DOY 226) for both Saturday and Sunday.  SSR redump list was not
completed for the next support.  Fortunately, no SSR redumps were necessary.


DOY 227 (08/15/05) ACE Anomaly S05-0031  SWICS Limit Violation
SSCPAM5V had 1 brief red high limit violation (>-4.5V).  Jim Raines
notified.
	2005-227 15:51:37 - 15:52:13z		-4.451 - -4.490V
IMPACT:  Awaiting instructions from Jim Raines.


DOY 230 (08/18/05) ACE Anomaly G05-0108  Incorrect Station Commanded
At 15:23:40z, three commands were sent to DSS-27 instead of DSS-16.  The ACE
pass had been rescheduled to DSS-16 due to the GOES-N launch slip and the
support was configured using an old schedule.  DR#G105963.
IMPACT:  Minimal.  Software reconfigured for correct station.