File cepac_sheet2.txt -- Last modified Wed Nov  1 14:28:05 1995


                   COMMISSIONING PHASE BLOCK SHEET

1. INSTRUMENT AND BLOCK NUMBER: CEPAC, Block 2

2. BLOCK IDENTIFICATION: EPHIN and LION Commissioning

3. PURPOSE: To carry out full EPHIN and LION commissioning

4. SUB-BLOCKS:
   NR.   IDENTIFICATION
   2.1   Functional Test of EPHIN Commandability
   2.2   Functional Test of EPHIN Analog Chains and Digital Data Processing
   2.3   Electronic Calibration of Discriminator Thresholds and PHA Circuitry
   2.4   Functional Test of LION 

5. SUB-BLOCKS TABLE:
   NR. - DURATION - PREVIOUS - COMMANDING - TELEMETRY - POINTING
   2.1   0:20         Nom        PROC           M         None
   2.2   0:25         Nom        PROC           M         None
   2.3   0:25         Nom        PROC           M         None
   2.4   0:11         Nom        PROC           M         None

6. SCHEDULING REQUIREMENTS:
   Latest 3 weeks after launch. 2.1-2.4 same day.

7. SPECIAL REQUIREMENTS: None

8. SUCCESS CRITERIA AND/OR EXPECTED OUTPUT:
   2.1 EPHIN mode changes as commanded, nominal analog and digital HK
   2.2 Counting rates and PHA results as expected from inflight pulse generator
   2.3 Threshold levels and PHA linearity nominal
   2.4 LION counting rates as expected from pulse gen., digital/analog HK nomin.

9. RELEVANT PROCEDURES:
   2.1 H_TS_FTC
   2.2 H_TS_FCAL
   2.3 H_TS_FCALX
   2.4 H_TS_LCAL

10. CROSS-REFERENCE TO TEST SHEETS: TBS

11. RELEVANT SECTION OF TIMELINE: Day 12, 19:20 - 22:02