1992 Dec. 20
                                                                  (revised)     


                         SSOC TOBAN REPORT,  WEEK 51

                           Hudson, Miyazaki, Sawa


1. Background. Activity at Sagamihara this week did not include any
of the SXT real-time operations, which have now been transferred to
KSC. The SXT toban's function has therefore been combined with that of
the SSOC toban.  This worked fine. There were no problems in SSOC functions. 

2. DSN communications. There were no problems with DSN communications, although
e-mail into the RASM system was unanswered. Preliminary and final schedules
were received for the end-of-year operations through Week 1 of 1993. Week 53 
had many cancellations because of the TCU limitations, and it was noted that
most (but not all) of these cancellations were properly accepted in the RASM
schedule for Week 53. The entry of cancellations from preliminary schedules
at DSN seems often to have errors on the side of omission, i.e. sometimes
we request cancellations that aren't entered. This is OK, because it gives us
more flexibility and we can always cancel again in real time.

3. DSN pass lost. DOY 344/1254 (Goldstone) was lost due to Shuttle support.
We had no warning of this cancellation, either by fax or by RASM, in time
to catch it. Investigation of this should continue - although this is an
uncommon occurrence, it was a clear operations "miss" and we should try to
avoid the same problem happening again.

4. Mainframe problems. There were mainframe problems of an unspecified nature,
plus a problem with AUTO_TOBAN defaults that prevented us from seeing data
properly at the beginning of the week. These problems were fixed by Shuto-san
and Greg Slater respectively.

5. MS tests and policy. There are ASTRO-D tests going on with the MS
computer system, which involves interruption of the digital link to KSC
that is used for Yohkoh upload files.  This means that files from
OPOGEDT and SXTSPT may appear to have been sent, but not actually have
been. We request that responsibility for informing the SSOC toban in
detail in each case of this type of interruption.

6. Hikitsugi.  The STT eclipse timer was set Dec. 15 and verified. The next
timer set should be on Dec. 22.