Definition: | qualifying two time-varying phenomena, time-scales, or signals characterized by corresponding significant instants which are separated by time intervals of a constant desired duration
NOTE 1 – In practice, any variations of the time intervals are constrained within specified limits.
NOTE 2 – Two phenomena, time-scales, or signals may be synchronous without being isochronous.
NOTE 3 – For periodic phenomena, time-scales or signals, the corresponding significant instants occur at the same average rate.
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