File mdi_sheet4.txt -- Last modified Wed Sep 27 17:32:08 1995



                   COMMISSIONING PHASE BLOCK SHEET

1. INSTRUMENT AND BLOCK NUMBER: MDI, Block 4

2. BLOCK IDENTIFICATION: MDI Observing Program Tests

3. PURPOSE: Test Flight Observing Sequences and Campaigns 

4. SUB-BLOCKS: (see Note 1)
   NR.   IDENTIFICATION
   4.1   Observing Program Checkout
   Flight observing sequences are run for the first time on the flight 
   instrument in sunlight, to verify functionality, on-board processing and 
   data compression efficiency.

   4.2   80-Hour Dynamics Program Test
   The dynamics program is run for 80 hours without interruption to test
   the observing sequence and the ground data systems' ability to deliver
   continuous data. 

5. SUB-BLOCKS TABLE: (see Note 2)
   NR. - DURATION - PREVIOUS - COMMANDING - TELEMETRY - POINTING
   4.1  20 days (1)   X 3.6      NRT-s (3)    Nom. (4)    Nom.
   4.2  80 hrs  (2)   X 3.6      NRT-s (3)    H2          Nom.

   (1) Not necessarily consecutive days: gaps up to 1 week are tolerable.
   
   (2) Sub-block 4.2 must run continuously with no interruption of 
       operations, telemetry or nominal pointing.

   (3) Most commanding will be done by delayed command loads.

   (4) Sub-block 4.1 will run around the clock as long as the pointing
       is nominal, using the telemetry in the usual mix of M, H, and VC2,
       with telemetry transitions to be made by the FOT using the
       nominal procedures.

6. SCHEDULING REQUIREMENTS: (see Note 3)
   N/A

7. SPECIAL REQUIREMENTS: (see Note 4)
   4.2  Dynamics Test needs 80 continuous hours high-rate telemetry.

8. SUCCESS CRITERIA AND/OR EXPECTED OUTPUT:
   Sequences and campaigns successfully executed.  80 hours of
   high-rate data without gaps delivered to Stanford.

9. RELEVANT PROCEDURES
   N/A

10. CROSS-REFERENCE TO TEST SHEETS: (list identifiers for test sheets)
    TBS

11. RELEVANT SECTION OF TIMELINE (backpage)

BLOCK4 -- MDI OBSERVING PROGRAM TESTS

COMMENT: Most of this period is devoted to testing the flight observing 
         sequences and data flow through the entire system.  

BLOCK4.1 -- OBSERVING PROGRAM CHECKOUT
   30 & 00:00 # Observing Program Checkout		# Duration 30 days
	Structure Program 
	Dynamics Program 
	Magnetic Program 
	Typical Campaign Program