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User name K. McCormick
Log entry time 10:37:39 on July19,2004
Entry number 128955
keyword=Comments on cryotarget entries 128912 and 128926
Per the fan readback going to zero, I believe this is a problem with the serial communication in the Hall cutting out for a short time. I would ignore this problem, as long as the tachometer is reading fine.
You may also see this problem on the high power heater readback, as it's also serial. As long as the target temperature is constant, things are fine.
For the temperature fluctuation, I believe this is also a serial communication problem, or a problem with the temperature sensor losing its calibration. We should watch for this problem and see if it evolves, but it's not a real problem until it starts to effect Htr_fore or Htr_aft temperature sensors.