Structure of the Calibration TEDS data block TEDS identifier Last calibration date-time Calibration interval SI units conversion constants SI units conversion slope SI units conversion intercept Operational lower range limit Operational upper range limit Operational uncertainty Post conversion operation Pre-conversion operation This field is used when only a linear single section conversion is required. TransducerChannel description Multinomial coefficient This is an optional TEDS. The function of the Calibration TEDS is to make available all of the information used by correction software in connection with the TransducerChannel being addressed.