This anomaly applies to IC Rev. Engineering A, build codes QFAA-AA0, QFAA-AC0.
The first sample in the result buffer is incorrect, and will be present although the SAMPLE task has never been issued.
The START task is triggered after performing calibration (through the CALIBRATEOFFSET task).
Incorrect sample data in the result buffer.
Calibration should follow the pattern STOP -> STOPPED -> CALIBRATEOFFSET -> CALIBRATEDONE -> STOP -> STOPPED -> START.