Aug_22_1999_H32.txt Shift H32
        Start at 1999:235:02:00:00 GMT
                = 1999 Aug 22 10:00pm EDT
        End       1999 Aug 23  6:00am EDT

   
SOT Lead	Bill Podgorski
SOT SC/ACA	
FOT-SI		
HRC-SI
ACIS-SI		Yousef Butt

Plan: Observations in p5p6 daily load.


EVENTS							    DONE	OBSID
--------------						    ----	-----
Start Shift                                             235:0200          222
----- Real time------
Running OBSID 222 at start of shift                         ongo
ACIS stop science for 222                               235:0222
Start maneuver to next target                           235:0222
Change OBSID to 213                                     235:0225          213
Complete maneuver
Start science on 213                                    235:0228
Stop science on 213                                     235:0309
Start maneuver to next target                           235:0309
Change OBSID to 159                                     235:0312          159
Complete maneuver
Complete SSR dump                                       235:0338
Start science on 159                                    235:0345
 (Got 4 of 4 stars initially, lost then
    reaquired one of them. Got 3 FIDS)
Start SSR dump                                          235:0705
Stop SSR dump                                           235:0742
Stop science on 159                                     235:0820
LOS Goldstone                                           235:0820
----- Out of Contact------
Start maneuver to next target                           235:0820
Change OBSID to 1230                                    235:0312         1230
Complete maneuver                                       235:0835
Start science on 1230                                   235:0835




End shift                                               235:1000


NOTES/ISSUES/PROBLEMS 
--------------------- 

1) Bill Peterson, FOT software systems engineer, reported that
   they were getting a large number of OBC overflow errors.
   Ron Ellison was called in and diagnosed the problem. 
   This is my understanding of it:

       The errors are caused when an SCS address above 7FFF(hex) 
       is computed. This causes the MSB to be set in the target
       address, and thereby generates an "OBC overflow error".
       However, the address which is computed is correct and
       the load executes properly. The bad thing is that the
       large number of these errors may mask a real error.
       
       This error only occurs in SCS 130 if the length is 
       greater than 3400 commands (due to the address mapping
       of SCS 130). It does not happen in SCS 128 or 129 since
       their address space is under 7FFF. 

   The problem will be worked tomorrow with flight software, FOT, etc.

2) I checked on the status of the SIM SEA software patch which will
   raise the calibration curve. Ron did not know what the status was.
   SOT lead should ask about this tomorrow - it may have been lost.


3) There will be a meeting at 8 am Monday Aug 23 to review the p7 load.