Sample rate error tolerance
The precision and error tolerance of a sample rate refers to how closely real and requested rates match.   The default is ± 1% -- i.e., if the 'real' rate (calculated from the start and end of sampling) is within 1% of the requested rate, no warning is issued and the requested rate is saved with the data file.   If real and requested rates differ by > 1%, a warning IS issued and the real rate is saved.

       This window lets you adjust the allowable error .  Note that extremely high precision (better than ± 0.1%) won't necessarily give useful increases in accuracy, since there are small inherent errors in the calculated rate (this is due to the way computers handle timing and screen-drawing functions).


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