ACE Weekly 07/08/05 - 07/14/05

All ACE spacecraft subsystems are performing nominally.

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Orbit/Attitude:

	Type         Attitude
	Date         07/11/05
	DOY          192 2005
	Thrusters    2R 4R+ 4R-
	Duration     11:23 min
	Start Time   13:48:37z
	Stop Time    14:00:00z
	Firing       58 pulses

The next attitude maneuver is scheduled for Friday 07/22/05.

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OCRs:

None

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Ongoing Activities:

Space Link Extension (SLE) - Development continues within the TDF
configuration.  The next ACE JPL telecon is scheduled for 07/21/05.  The
DSN/Developer test with DTF-21 is scheduled for 08/04/05.

ROBOTT - Version 1.0 is scheduled for String 3 installation at 1pm on Monday
07/18/2005.  Version 1.0 has fixes for 4 of the 36 open DRs.

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Extra Activities:

DOY 192 (07/11/05) SSR A 30 Telemetry Sections downlinked.  No new Single
Bit errors (correctable) found.

DOY 195 (07/14/05) SSR B 30 Telemetry Sections downlinked.  No new Single
Bit errors (correctable) found.

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Anomalies:

DOY 189 (07/08/05) ACE Anomaly G05-0090  VDS Keyset Failure
VDS (Voice Distribution System) Keyset (E00338, B14RW10FP0993) was not
functioning.  Mission Director contacted to ensure VDS was not scheduled for
disconnection.  VDS connection was repaired by Goddard Voice.
IMPACT:  None.  VDS was on back-up string.

DOY 190 (07/09/05) ACE Anomaly G05-0091  GDS DSS-27  Antenna Pointing
At BOT, problems with the ground station's Antenna Pointing was resolved at
14:31:27z.  Uplink was established at 15:05:35z.  DR# G105821
IMPACT:  Activities delayed 70 minutes.  SSR playback incomplete.  Recorder
data was automatically recovered during the next support with new data
recovery procedures.

DOY 191 (07/10/05) ACE Anomaly S05-0022  SWICS Limit Violations
SSCPAM5V had 5 brief (24 second) red high limit violations from 14:46:45z to
16:35:38z.  Limit is -4.5V; violations ranged to -4.334V.  Jim Raines
notified.
IMPACT:  Awaiting instructions from Jim Raines.

DOY 192 (07/11/05) ACE Anomaly S05-0023  SWICS Limit Violation
SSCPAM5V had 1 brief (24 second) red high limit violation at 08:00:17z.
Limit is -4.5V; violations ranged to -4.451V.  Jim Raines notified.
IMPACT:  Awaiting instructions from Jim Raines.

DOY 193 (07/12/05) ACE Anomaly G05-0092  GDS DSS-16  TCP Problems
At BOT, problems with the bit rate on the ground station's TCP (Telemetry
Control Processor) were resolved at 14:53:03z.  DR# G105827
IMPACT:  Activities delayed 13 minutes.

DOY 194 (07/13/05) ACE Anomaly S05-0024  SWICS Limit Violation
SSCPAM5V had 1 brief (24 second) red high limit violations at 06:01:11z.
Limit is -4.5V; violations ranged to -4.412V.  Jim Raines notified.
IMPACT:  Awaiting instructions from Jim Raines.

DOY 194 (07/13/05) ACE Anomaly G05-0093  ROBOTT Notification Lost in Email
Problems with HTSI email servers resulted in the loss of ROBOTT
Notifications.  Email servers were restored after the pass was complete.
IMPACT:  Minimal.  ROBOTT Notifications were properly received by pagers and
stored in log files.

DOY 194 (07/13/05) ACE Anomaly G05-0094  GDS DSS-16  CMD Mod Index
At BOT, commands were not being accepted by the spacecraft.  Commands were
successfully accepted after the ground station reset the CMD Mod Index.  DR#
G105828
IMPACT:  Activities delayed 12 minutes.

DOY 194 (07/13/05) ACE Anomaly G05-0095  GDS DSS-16  Heat Exchanger
Uplink to the spacecraft was lost from 14:46:03z to 14:53:39z and from
15:47:27z to 16:15:00z (EOT) due to ground station problems with a
Transmitter Heat Exchanger.  DR# G105829
IMPACT:  End Of Track spacecraft state-of-health checks not were not
completed.

DOY 194 (07/13/05) ACE Anomaly G05-0096  ROBOTT Endless Loop
The C&C component of ROBOTT entered an endless loop when the final
spacecraft state-of-health procedure did not complete at End Of Track.
CDSID# 21123, 21141
IMPACT:  Minimal since endless loop occurred after the end of the support.
C&C was terminated by the Offline component of ROBOTT at EOT+10 minutes.