ACE Weekly 02/24/2010 - 03/02/2010

All ACE spacecraft subsystems are performing nominally.

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Orbit/Attitude:

No maneuvers were completed this week.  The next attitude maneuver is
scheduled for Wednesday 03/10/2010.

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OCRs:

DOY 057 (02/26/2010)   MMOC-0079  Install ACE MTASS Release 201002R1
MTASS will eventually replace the old ACE MOC Attitude Determination
System (ADS).  MTASS was installed in the MMOC, but is still undergoing
testing.  The old ACE MOC ADS is still being used for generating the
attitude/orbit reports to ASC and NOAA.


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Activities:

Data Capture:  100%  DOY 052-059 2010

Multi-Mission Operations Center (MMOC) Summary
The first week of ACE operational testing has been completed (DOY
054-061 Feb 23-Mar2).
* ITOS has been running automated for the past week.  The daily pass
procedures have been started by cron based on the DSN Schedule.  No
manual intervention during the pass except as noted in the anomaly
reports.
* Data forwarding to ACE Science Center (ASC) and NOAA Space Weather
Prediction Center have been from the MMOC.  The MMOC has been connecting
to the ASC operational port instead of the test port.
* Offline activities have been performed and reviewed manually
(trending, report generation and data archiving).
* ACE Clock Reports sent to ASC and NOAA have been generated with the
MMOC tools.
* ACE Attitude/Orbit Reports sent to ASC and NOAA have been generated
with the old ACE MOC software.  MTASS software acceptance testing
continues.
* DSN declared their SLE interface operational after the first 3 passes
were successful.
* ITOS was restarted after 1 week of running.

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Anomalies:

DOY 059  02/28/2010  S-ACE-0486  G10-0009  Dumplist Parsed Incorrectly
ACE uses a tool "ace_create_s_dumplist" for reading telemetry files and
determining which SSR slices to redump (created in 2003).  The tool
creates a string giving the start_slice, num_slice and num_frames, which
is parsed by the STOL procedure "s_auto_redump.proc".  In the conversion
to ITOS, the dumplist string was set to 18 characters and
s_auto_redump.proc was looking for 16 characters.  DOY 059 was the first
pass to have more than 1 redump.
IMPACT:  The redump parameters were manually entered into ITOS and the
s_auto_redump procedure was continued.  MOCR-90 has fixed s_auto_redump.

DOY 060  03/01/2010  S-ACE-0487  G10-0010  NOAA Data Forward Disconnect
NOAA Space Weather Prediction Center implemented a new firewall.  The
firewall had rules allowing data from the old ACE MOC configuration, but
no rules for the new MMOC.  NOAA was notified when the MMOC was no
longer able to connect.  NOAA updated their new firewall rules.
IMPACT:  Manual intervention required.  20 minutes of no data forwarding
to NOAA.

DOY 060  03/01/2010  S-ACE-0488  G10-0011  DSS-27 Stopped Tracking
The ground antenna stopped tracking at 2012z.  The antenna was back
tracking at 2024z and uplink at 2025z. DR#G110087
IMPACT:  Minimal.  12 minutes of tracking.  Playback data captured on
the following pass.

DOY 060  03/01/2010  S-ACE-0489  G10-0012  SLE CMDs Not Transmitted D27
After uplink was established, DSS-27 was unable to process the SLE
commands sent from the MMOC.  The MMOC disconnected and reconnected the
SLE CMD FCLTU.  The commands were then successfully sent by DSS-27.
IMPACT:  Manual intervention required.  Commanding delayed 6 minutes.

DOY 061  03/02/2010  S-ACE-0450  G10-0013  ASC Data Forward Disconnect
For unknown reasons, the data forwarding to ASC disconnected twice
during the pass (1705z and 1820z).
IMPACT:  Manual intervention to reconnect data forwarding to ASC.