ACTIVITY TITLE: Mechanism Mini-Functional
APPLICABLE SMOV REQUIREMENTS: L.10.4.5.1.6
DESCRIPTION: All STIS mechanisms, with the exception of the corrector, will be initialized and then commanded through the full range of previous on-orbit motion to redistribute lubricant and verify operability. Normal engineering telemetry (5 samples of the mechanism's position) will be used to verify the commanded movements. The sequence is:
Initialize all mechanisms
External Shutter: Open and Close
EMC Mechanisms: a) Move calibration insert mechanism to Remove and Insert positions. b) Move echelle blocker to Block1 and Block2 positions c) Move Mode Isolation Shutter to Open and Close positions Mode Select Mechanism: Move MSM to these positions. Optic Lambda Cylinder 1 Position X140H 1487 10 E230H 2563 2562 X230H 2511 5734 Optic Lambda Cylinder 3 Position E230H 2013 30 E140H 1598 2589 Four moves are required to avoid E230H 2812 3170 the "stop zone" E230H 2063 5749 Optic Lambda Cylinder 4 Position G750M 7795 5 G230M 1769 2788 E230H 1763 5699
Stilt Wheel Mechanism: Move slit wheel from the home position, F28X50LP, through the sequences of slits S330X050, S31X050C, and back to F28X50LP. This provides a full range of motion around the Slit Wheel Avoidance Zone.
CCD Shutter Mechanism: Move CCD Shutter through two open and close cycles
IMPLEMENTATION METHOD: Stored commanding
DEPENDENCIES: To be done after STIS-02 and STIS-03 have been completed.
DURATION: 3600 s (one full internal orbit)
DATA REQUIREMENTS: No science data to SSR; engineering telemetry only.
ANALYSES & EXPECTED RESULTS: The telemetry and diagnostic data will be examined (voltages, currents, temperatures, motor status and position data) for agreement with predicted values and previous ground and on-orbit test data.
AUTHOR/telephone/email: Thomas Wheelerfirstname.lastname@example.org