SGP/MFRSR/E4 - Bad head temp and voltage data

Detector voltage and head temperature were erratic and at times wholly incorrect.  The 
first sign of this is on 20040524 just after 2000 UTC.  Sporadic irregularities are not 
altogether unusual, so by itself this is an incident of not much concern.  As time went on, 
however, the erratic readings become more frequent and the head temperature began to be 
affected as well.  Ultimately the problem was traced to a faulty signal cable.

The cable was replaced on 20050921 and the head temperature immediately responded with 
normal readings.  The voltage was still a little noisy for a few days, but ultimately reads 
near constant as expected.  Not sure why the voltage was still noisy for those days, but 
it could either be within normal bounds for this instrument, or possibly the new cable 
wasn't making a good connection at first.

The good news is the mentor believes the irradiance data during the time covered by this 
DQR are good, so this issue should be essentially transparent to the data user.

• Detector Temperature(head_temp)
• Data Logger Supply Voltage(logger_volt)

• Detector Temperature(head_temp)
• Data Logger Supply Voltage(logger_volt)

• null(Raw data stream - documentation not supported)