DQRID : D050413.1
Start DateStart TimeEnd DateEnd Time
03/08/2005170004/07/20052359
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Subject:
PYE/AERI/M1 - Incorrect reporting of the hatch open status
DataStreams:pyeaerisummaryM1.b1
Description:
The polarity of the hatch controller was incorrect. The hatch was reported in an 
indeterminate position (red) when the controller was open and collecting data. Normally, when the 
hatch open metadata flag is red, the hatch is closed or partially closed and there is no 
sky data. However, because the polarity was reversed, the hatch flagged red when the 
hatch was open. The problem was resolved by reversing the polarity through software. The 
hatch flag now correctly reports the status of the hatch.
Suggestions: 
null
Measurements:pyeaerisummaryM1.b1:
  • Boolean with negative error conditions: 1:Open 0:Closed -1:Fault -2:Outside
    Valid Range -3:Neither Open Nor Closed(hatchOpen)
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