What is the distinction between putting calibration data within the data record or placing the corrections within the VIDF file through table corrections?
The VIDF is meant to be easily updated and to contain all of the data which may be periodically updated due to either refinements in the instrument calibration of due to degradation within the instrument. Since data is typically stored as raw data, the conversion to physical units is done as the data is accessed; thus any changes to calibration factors can be made and instantaneously applied. If calibration data varies at the rate of the sensor data, then this calibration data should be written in the data files and not in the VIDF. If too many VIDF files are written, the user will find that it will become a logistics nightmare trying to keep track of all the VIDF files. Thus, frequently varying calibration data should be included in the data file.
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