SSOC Tohbans Report for Week 16, 1996 (15 April - 21 April 1996) SSOC: Y. Suematsu and M. Ohyama KSC: S. Masuda and T. Shimizu 0. Meeting Attendants ---------------- Te.Watanabe, M.Sawa, T.Sakao, S.Savy, G. Slater, J.Khan, H.Hudson, Y.Suematsu, M.Irie, R.Kano, M.Ohyama 1. Solar Activity ---------------- The Sun was very quiet. A B-class flare was reported. Partial solar eclipses took place on 17 and 18 Apr (UT). 2. Standard Operation ---------------- 2.1 SXT table uploads Date(JST) Pass Table ID -------------------------------------------------------- 15 Apr 3 960414 P3 ARS0 XBP+LONG 17 Apr 3 960416 P3 ARS1 DKCAL 18 Apr 3 960417 P3 ARS1 ECLIPSE 19 Apr 2 960418 P2 ARS1 STD+DIFFUSE 20 Apr 4 960419 P4 ARS0 GAIN CHK 20 Apr 5 960419 P5 ARS1 STD+LONG 21 Apr 4 960420 P4 ARS1 STD+LONG -------------------------------------------------------- 2.2 STT timer setting STT timer was set at pass 4 on 15 Apr (UT). The next set takes place on 22-Apr (JST). 3. Errors and Problems ---------------- 3.1 SXT errors Bit map error was found at pass 1 of 15-Apl and recovered at the same pass. 3.2 BCS errors No error was found. 3.3 MS OP Retry OP was not uploaded correctly at pass 1 of 19-Apr. The reason seems that `NIGHT OG' worked during writing the OP. The OP was uploaded exactly after `MS OP RETRY' was executed. 4. DSN Communications ---------------- 4.1 DSN Final schedule for W16 No cancellation. 4.2 DSN Final schedule for W17 We cancelled 4 passes. DSS-17 DOY 116/5774 DSS-16 DOY 116/5777 DSS-16 DOY 117/5789 DSS-17 DOY 118/5806 4.3 DSN Preliminary schedule for W18 We cancelled 1 pass. 4.4 DSN Strawman schedule for W19 The strawman schedule arrived on 20 Apr. (Sat). The Yohkoh-Asuka DSN conflicts meeting will be held 22 Apr. (Man). Please select passes to keeep and passes to caancel for W19. 4.5 Data transmission from DSN 096 74 2016 2% block short & header corrupted. Requested 8 Apr. no correspondence Requested 12 Apr. Closed/no correspondence. 099 76 0720 Not received. Requested 10 Apr. no correspondence Requested 12 Apr. Closed/correct data. 100 17 0914 9% corrupted. Requested 10 Apr. same data. Requested 12 Apr. Closed/correct data. 101 17 1441 7% corrupted. Requested 12 Apr. ********* Note. 102 76 0634 9% corrupted. Requested 12 Apr. Closed/correct data. 104 46 0305 6% less. Requested 19 Apr. 104 74 2105 Not received. Requested 15 Apr. no correspondence Requested 19 Apr. 105 66 0057 Header corrupted.(data OK) Requested 15 Apr. no correspondence Requested 19 Apr. 106 17 1108 Different from FAX Requested 19 Apr. 107 74 1512 data less than expected Requested 19 Apr. 108 76 0319 data less than expected Requested 19 Apr. *** Note *** Had we better ask you to resend ? Not corrupted data but less. 101 17 1441 103 17 1337 104 16 1355 Other data are regularly transmitted this week. 5. Yohkoh/ASCA Pass Conflicts at KSC ---------------- 7 passes in W16 were lost due to conflicts with ASCA. 4 passes in W17 will be lost. 6. Special Operations ---------------- 6.1 Partial solar eclipses on 17-18 April Partial solar eclipse observations were made twice smoothly. 6.2 HXT CAL HXT calibrations were successfully carried out at passes 3 and 4 of 18 Apr, and pass 4 of 19 Apr. 7. Holiday Schedule ---------------- The next holiday will be on Sunday, April 28 (JST). 8. Hikitsugi Items ---------------- 8.1 Tohbans for W16 KSC : T.Shimizu & A.Okubo SSOC : R.Kano & M.Irie 8.2 STT timer setting The next STT timer set should be made on Apr 22 (Mon). 8.3 DSN Strawman schedule for W19 See 4.4 8.4 Transmission of OPs It is no longer necessary to confirm the transmission of OP/OG files to KSC by checking the printout on the 3rd floor in B-toh. Instead, the time of transmission of the OP/OG files should be noted down. If the SSOC or KSC tohbans notice any failure in transmission of the OP/OG files then it should be reported to Shuto-san and Kosugi-san. 8.5 SXT patrol image dumps A block command `DP BC 8C-05 (hex)' should be executed whenever an SXT Table is uploaded. Since the Sun is very quiet, ARS parameters need to be checked by the SXT patrol images dumped by this command. 8.6 WWW server of DSN The DSN NOCC Information Server (NIS) is now on-line and available for DSN scheduling operations. The URL location is: http://dsn.jpl.nasa.gov/nss (But it is not used for operations, so does this item need to be mentioned in the tohban report? - AI of JRL) 8.7 New works not mentioned in the manual The data corruptions from DSN(JPL) and the re-transmission request logs are put on the directory ~/dsn_corrupt by Katano-san. SSOC Tohbans should check these logs and report the problems.