ACE Weekly 09/28/2007 - 10/04/2007 All ACE spacecraft subsystems are performing nominally. ============================================================================ Orbit/Attitude: No maneuvers were performed this week. The next attitude maneuver is scheduled for Monday, 10/08/2007. ============================================================================ OCRs: DOY 270 (10/03/2007) GND-187 ACE SLE v3.1 Software Install The ACE MOC SLE software was re-installed on both SLE workstations using updated install procedures. ============================================================================ Activities: Space Link Extension (SLE) Testing status DSN continues to troubleshoot 26m SLE problems. A DSS-66 test was performed on Thursday 10/04/2007. DSN implemented a correction to the 26m desktop. However, the ACE MOC SLE software was unable bind to DSS-66 due to a configuration error with the ACE MOC SLE software. The configuration error is being investigated. The following tests have been scheduled for testing both DSN and the ACE MOC SLE upgrade (v3.1) Day Date DOY Station Thu 10/18 291 DSS-34 Mon 10/22 295 DSS-66 Wed 10/24 297 DSS-46 Thu 10/25 298 DSS-34 Thu 11/01 305 DSS-66 with DSS-27 Thu 11/01 305 DSS-27 Multi-Mission Ops Center (MMOC) Planning continues to look for ways to compress the schedule for transitioning to the MMOC. ============================================================================ Anomalies: DOY 275 10/02/2007 S-ACE-0231 G07-0084 AC1WS3 Display Failure A monitor on the prime operations string failed. Hardware maintenance was notified and replaced the monitor. IMPACT: Minimal. Automation was able to take the pass without manual intervention. DOY 276 10/03/2007 S-ACE-0232 G07-0085 DSS-66 Antenna Pointing Problems with the ground station autotrack and ground receiver caused the ground antenna Y axis offset to be 0.5deg. Ground station switched to PGM mode to get back on point at 1310z. The spacecraft receiver B lost lock on the uplink, but there was no impact since C&DH B commanding had already been completed. IMPACT: Minimal. 1 minute telemetry outage.