DQRID : D060825.2
Start DateStart TimeEnd DateEnd Time
11/13/2005000010/12/20062300
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Subject:
TWP/TSI/C1 - high control board temperature
DataStreams:twptsiskycoverC1.b1
Description:
The TT8 control board temperature was high, ~50C, so that the cooling fan was constantly 
on. It appears that the heat sinks were not transferred from the original board to the new 
one when it was replaced. The problem was corrected when heat sinks were installed.
Suggestions: 
Measurements:twptsiskycoverC1.b1:
  • Pixel count: number total between horizon and processed circle(count.sub.proczen)
  • Percent opaque cloud(percent.opaque)
  • Pixel count: number thin in sun circle(region.sun.count.thin)
  • Pixel count: number total in zenith circle(region.zenith.count)
  • Pixel count: number thin in zenith circle(region.zenith.count.thin)
  • Sun altitude above horizon(solar.altitude)
  • Solar azimuth angle(solar.azimuth)
  • Sunshine meter(sunny)
  • Percentage thin cloud(percent.thin)
  • Relative \'strength\' of direct sun(sun.strength)
  • Pixel count: number total in processed circle(count.sky)
  • Pixel count: number total in sun circle(region.sun.count)
  • Pixel count: number total in horizon area(region.horizon.count)
  • Pixel count: number opaque in horizon area(region.horizon.count.opaque)
  • Pixel count: camera and sun strip mask(count.mask)
  • Pixel count: number below horizon in image(count.sub.horz)
  • Pixel count: number total opaque(count.opaque)
  • Pixel count: number total thin(count.thin)
  • Pixel count: number opaque in zenith circle(region.zenith.count.opaque)
  • Pixel count: number thin in horizon area(region.horizon.count.thin)
  • Pixel count: box, outside mirror area(count.box)
  • Pixel count: number opaque in sun circle(region.sun.count.opaque)
  • Pixel count: number total indeterminant(count.unknown)
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