Glossary

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Significant Instant
  • In a time-plot of a signal, such as a time-plot of a pulsed electromagnetic wave, an instant at which a particular type of a usually repetitive event occurs, such as a transition to another significant condition, such as a different electric field strength, power level, polarization, frequency, or phase in a modulated wave. Note: The significant conditions are those recognized by an appropriate device. Each of the significant instants is determined at the moment the appropriate device assumes a condition or state usable for performing a specific function, such as recording, processing, or gating. See also decision instant, significant interval, start-stop distortion.