SOHO DAILY REPORT Operations Day -- 113/1997 (23 APR 97) Mission Day 509 SOHO FLIGHT OPERATIONS TEAM, NASA/GSFC Ref. #: SH-FOT-DR-970423 ===================================================================== The 3-month continuous operations period started on day 103 at 1105 UT, and will continue until day 195 at 0050 UT. PASS #1 Canberra DSS46 0254 - 0450 PASS #2 Canberra DSS42 0426 - 0800 PASS #3 Madrid DSS61 0749 - 1815 PASS #4 Goldstone DSS24 1750 - 2340 PASS #5 Goldstone DSS27 2323 - 114/0329 Pass #1 Summary --------------------- Anomalies: S97-0058 0320 Unable to get Receiver 1 to lock on main uplink carrier. NRT: None Activity Summary: - Collect MDI-H (0254 - 0426) - Attempted several resweeps to Lock Up Receiver 1 (used nominal parameters) - Receiver 2 Locks up After each sweep and is used for commanding the S/C. Pass #2 summary --------------------- Anomalies: G97-0261 113/0445 SRA Red (ranging unavailable due to equipment problem) G97-0262 113/0445 TGA 1 Problem NRT: None Activity Summary: - Collect MDI-H (0426 - 0749) - Attempted several resweeps to Lock Up Receiver 1 (used nominal parameters) Pass #3 summary --------------------- Anomalies: G97-0264 113/1154 Telemetry Outage - Power Outage(56 min, nonrecoverable) NRT: 1727 - 1745 Activity Summary: - Collect Min/Max Parameters - OBT Distribution to Swan/Celias - Dump Cobs Programmable Group 8 - RSL Table Uplink - Uplink Delayed Loads (VIRA70424,SSR_RECORD_971133) - Cepac Calibration Via TSTOL - Collect MDI-M (1521 - 1623) - Collect MDI-H (0749 - 1521, 1623 - 1750) - Attempted several resweeps; largest range * 120 of center freq. slowest rate 100 hz/sec Pass #4 summary --------------------- Anomalies: G97-0263 1808 TC Block Sequence Error (S/W error during resync) G97-0265 2106 TC Block Sequence Error (7 min NRT lost) NRT: 1832 - 1900 2050 - 2106 2115 - 2212 Activity Summary: - Collect MDI-H (1750 - 2340) - Clear Time-tagged Buffer - Uplink Delayed Load (TTMM_TOMH_97114, TTMH_TOMM_97114,VIRA70424) - Attempted 7 point BLF test * 360, rate = 6khz/sec Pass #5 summary --------------------- Anomalies: None NRT: None Activity Summary: - Collect MDI-M (0100 - 0200) - Collect MDI-H (2340 - 0100, 0200 - 0329) - SSR SEF Reset - OBT Distribution to Celias/Swan - Collect Min/Max Parameters - Changed Command Modulation Index to 1.2 (contingency). Otherwise commands would not get into S/C. -- End of Report -- ******************************** To be removed from this list: --Send a message to macjordomo@sohosched.gsfc.nasa.gov message body should read: unsubscribe SOHOFOT-Reports ******************************** To be added to the list: --Send a message to macjordomo@sohosched.gsfc.nasa.gov message body should read: subscribe SOHOFOT-Reports ********************************