SSOC Tohban Report for Week 40 ( 4 OCT - 10 OCT, 1993 )
                    Oct 11, 1993   Y. Kozuka and Y. Kato    

0.General
  The 8' E/W offset pointing was done on Oct 6.
  STT cannot be used from Oct 10 to Oct 16.
  A hard disk error occurred in A-400 before pass 4 on Oct 9.  A hard
  disk change and a maintenance of A-400 was done on Oct 9-10.

1.Solar Activity
  Solar activity of this week was relatively high.  There are two large
  active regions (NOAA #7590 and #7592), where 5 C-class and 1 M-class 
  flares occurred.

2.SSOC Operations

2-1. SXT Table Changes
  Oct  4, Pass3(931003-1548)   931003 T1 P2 ARS1 STD
  Oct  5, Pass4(931005-0104)   931005 T1 P4 ARS1 STD
  Oct  6, Pass2(931005-1343)   931005 T1 P2 ARS1 DEEP CORONA E
  Oct  6, Pass4(931006-0102)   931006 T2 P4 ARS1 STD

2-2. STT Timer Set
  STT timer was set at pass 2 on Oct 5 and at pass 4 on Oct 10. 
  STT has stopped since the setting on Oct 10.
  The next timer set should be done on Oct 16.

3.Errors and Problems

3-1. Errors
  SXT BIT MAP ERROR   pass 1 on Oct 4    recovered by Yobi-C in the same pass
  BCS error           Pass 3 on Oct 7    recovered at the next pass

3-2. Problem
  Because of the A-400 hard disk error, operation of pass 4 on Oct 9 was 
  carried out with only S-3500.  There is no lack of data in the pass.

4.Special Operations and Calibrations

4-1. Offset pointing
  The 8' east/west offset pointing was done from pass 2 to pass 4 on Oct 6.

5. DSN data
  no problem
 
6.Hikitsugi

6-1. Tobans in week 41
  SSOC  Sawa,    Lemen
  KSC   Noguchi, Kawai
6-2. Next STT Timer SET
  Oct 16
6-3. Offset Pointing
  8' east/west offpoint operations on Oct 13
6-4. Terminator program
  Will be continued