File mdi_sheet1.txt -- Last modified Wed Sep 27 17:28:42 1995


                   COMMISSIONING PHASE BLOCK SHEET

1. INSTRUMENT AND BLOCK NUMBER: MDI, Block 1

2. BLOCK IDENTIFICATION: MDI Early Switch-on

3. PURPOSE: Start MDI CCD Bake-out for Cleanliness

4. SUB-BLOCKS: (see Note 1)
   NR.   IDENTIFICATION
   1.1   Switch on DEP & start CCD bake-out
   1.2   Switch-on Filter Oven Heater
   1.3   Thermal Adjustments
   1.4   CCD Thermal Adjustment
   1.5   End CCD Bake-out


5. SUB-BLOCKS TABLE: (see Note 2)
   NR. - DURATION - PREVIOUS - COMMANDING - TELEMETRY - POINTING
   1.1    2:00        N/A      PRO,NRT-d       M          None
   1.2    1:30        Nom.     PRO,NRT-d       M          None
   1.3    0:20        Nom.       NRT-d         M          None
   1.4    0:20        Nom        NRT-d         M          None
   1.5    0:30        Nom.       NRT-d         M          None

6. SCHEDULING REQUIREMENTS: (see Note 3)
   1.1 about 12 hours after launch, as soon as M rate TM is available;
       if MDI is turned off for SSD1 or any other reason, then Block 1.1
       must be repeated within a few hours after the interruption of power
   1.2 about 1 to 3 days after 1.1; should be repeated promptly after
       any interruption of power to MDI
   1.3 about 10 days after 1.1
   1.4 about 14 days after 1.1
   1.5 about  7 days after 1.4

7. SPECIAL REQUIREMENTS: (see Note 4)
   Coordination with FOT required

8. SUCCESS CRITERIA AND/OR EXPECTED OUTPUT:
   MDI in Sleep Mode, CCD, Optics Package and filter oven temperatures 
   within limits.

9. RELEVANT PROCEDURES
   1.1	TSTOL  m_pconpri	- switch on DEP
	TSTOL  m_htron		- switch on heater controllers
	TSTOL  m_hopspt		- set optics package heaters
	TSTOL  m_ccdspt		- set CCD heaters; start CCD bake-out
   1.2  TSTOL  m_ovenon		- switch on prime oven controller
	TSTOL  m_ovenspt
   1.3	TSTOL  m_hopspt		- set optics package heaters
   1.4  TSTOL  m_ccdspt		- set CCD heaters

10. CROSS-REFERENCE TO TEST SHEETS: (list identifiers for test sheets)
    TBS
	
11. RELEVANT SECTION OF TIMELINE (backpage)

; MDI Acronyms:
; DEP - Dedicated Experiment Processor; MDI internal control processor
;  IP - Image Processor; MDI internal data processor
; ISS - Image Stabilization System
;  OP - MDI Optics Package
;  EP - MDI Electronics Package
; VC2 - Virtual Channel 2; MDI 160k telemetry delivered to EOF in realtime
; VC3 - Virtual Channel 3; MDI 160k telemetry recorded for delivery to SU

; ddd & hh:mm # Action					# Comment

BLOCK1 -- MDI EARLY SWITCH-ON

COMMENT:  These early switch-on activities are entirely internal and 
should have no interaction with other experiments.

NOTE: MDI needs medium rate TM for switch-on. If not available, wait
      until established. (Medium rate TM planned for approximately 12 
      hours after launch)

BLOCK1.1 -- START CCD BAKE-OUT
    0 & 12:00 # Begin MDI Activation to SLEEP Mode	# Duration 1 hour
    0 & 12:05 # Establish power up configuration
    0 & 12:15 # Switch on power converters and DEP
    0 & 12:30 # Verify DEP functionality
	
    0 & 13:00 # Switch on & verify adjustable CCD heater
    0 & 13:10 #	Set CCD heater to +30 deg C		# 14 day bakeout
    0 & 13:15 #	Switch on & verify Optics Package heater
    0 & 13:25 #	Set OP heater to +30 deg C		# 10 day bakeout
    0 & 13:40 #	Switch off S/C substitution heaters	
    0 & 14:00 # MDI in SLEEP Mode

;   Verify that EP is not too cold and that both EP and OP are above
;   nominal to increase outgassing. 

BLOCK1.2 -- SWITCH-ON FILTER OVEN HEATER  
    1 & 01:00 #	Switch on & verify Filter Oven heater	# MDI SLEEP Mode
    1 & 01:10 #	Set Filter Oven heater to +35 deg C
    1 & 02:00 #	Adjust settings for CCD and OP heaters