Transcript Bob-TestPlanning.ppt

CRaTER Pre-Environmental Review
(I-PER)
Environmental Test Planing
Bob Goeke
September 10-11, 2008
Cosmic RAy Telescope for the Effects of Radiation
Test Timelines
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October 13
Draper Labs
September 24-25
October 29-30
MIT
September 26-October 10
October 31-November 14
October 15-26
(not required)
December 8
December 15
EMC/EMI
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September 15
Thermal-Vacuum
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MGH
Vibration
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Serial Number 1
Science Calibration
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Serial Number 2
Chomerics
Science Calibration
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MGH
The MGH dates are fixed by facility availability; it was the best we could negotiate.
The remaining facility dates are, within reason, flexible.
Cosmic RAy Telescope for the Effects of Radiation
Functional Test Procedures
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Short Form Functional
– Tests all primary functionality including command and telemetry packet handling.
– Verifies 1Hz clock and time message handling.
– Verifies detector bias, detector leakage currents, detector noise levels.
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Long Form Functional
– Tests every command bit and every telemetry data item. The only function not tested to
completion is the Discriminator Mask (an exhaustive test would take >10 12 years) though
each bit in the mask is separately checked (a 3-1/2 hour process).
– Redundant 1553 bus is verified.
– Instrument response to loss of 1Hz clock is verified.
– Power Bus variation (27->35VDC) is tested.
– Internal RAM pattern and FPGA internal logic test is performed.
– Thick (D2, D4, D6) detector aliveness is verified by use of gamma rays from a 60Co source;
the thin (D1, D3, D5) detectors are not responsive to available laboratory sources.
Cosmic RAy Telescope for the Effects of Radiation
Vibration Testing
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Procedure:
Test Flow
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32-06004.03
Long Form Functional
Low-Level Resonance Search
Sine Vibration Sweep (5 - 50 Hz)
Short Form Functional
Structural Loads (10 g at 35 Hz sine burst)
Short Form Functional
Random Vibration (14.1 grms)
Low-Level Resonance Search/Sine Sweep
Long Form Functional
Cosmic RAy Telescope for the Effects of Radiation
Thermal-Vacuum Testing
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Procedure:
Test Flow
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32-06005.01
Long Form Functional at 0C
Hot Survival at +50C
Thermal Balance at +25C and -30C
Hot Turn On & Long Form Functional at +40C
Cold Turn On & Long Form Functional at -40C
Seven cycles of +40C/-40C with Short Form Functionals
TQCM measurement at +35C
Cosmic RAy Telescope for the Effects of Radiation
Thermal-Vacuum Timeline
Cosmic RAy Telescope for the Effects of Radiation
EMC/EMI Testing
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Procedure:
Test Flow
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32-06006.01
Long Form Functional (at MIT)
CE01 -- monitor primary science & housekeeping
CE02 -- monitor primary science & housekeeping
RE02 -- monitor primary science & housekeeping
CS01 -- normal mode with internal cal
CS02 -- normal mode with internal cal
CS06 -- normal mode with internal cal
RS03 -- normal mode with internal cal
Long Form Functional (at MIT)
Cosmic RAy Telescope for the Effects of Radiation