SDA Operator’s Manual
Time-parameter estimation depends on the number of cycles included within the observation
window. If the number of cycles is not an integer, parameter measurements such as rms or mean
are biased. However, only the last value is actually displayed, the mean being available when
statistics are enabled. To avoid these bias effects, the instrument uses cyclic parameters,
including crms and cmean, which restrict the calculation to an integer number of cycles.
Figure 2
SDA-OM-E Rev H 153
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