| Description: | per Nels Larson (11/09/94)
"The MFRSR gains measured in the field were found to be different than the
values used in the Ashton SIROS CalibInfo files used to process the data
for Board 93913, which was installed 94/03/17.
I have dug deeply into my notes from Jerry Berndt's visit to the field in
March, and found some gains he reported for the board at that time. I also
found a note on the same page stating that I should refer to the calibration
sheet in his lab notebook for the proper gains. Well, I used the gains from
the lab notebook and didn't check them against the gains he rattled off over
the phone. The ones he gave me verbally match pretty well with the actual
state of the board as found by John in October.
What will need to be done is to correct the processed Ashton data stream of
the MFRSR Detector Channels 3,4,6,7 (499,608,859,934 nm) for improper logger
board gains effective 94/03/17. Because it is such a long period of data, I
would recommend reprocessing the data with the new CalibInfo files, rather
than including a set of constants to apply to the old MFRSR data values.
Again, only the MFRSR Detector channels are affected by these calibration
changes. The non-MFRSR Detector data, including the PIR, PSP, NIP,
MFRSR temperature, and logger health data, are unaffected." |