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The relationship between a value cal_value stored in a data set and the original value is defined as: orig_value = cal * (cal_value - offset). |
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The variable offset_err contains a potential error of offset, and cal_err contains a potential error of cal. Currently the calibration record is provided for information only. The SD interface performs no operations on the data based on the calibration tag. |
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The calibration information is automatically cleared after a call to SDreaddata or SDwritedata. Therefore, SDsetcal must be called once for each data set that is to be read or written. |