The reciprocal of the repetition rate; e.g., the interval between leading edges of successive pulses. ... (05 Mar 2000) ... 
Type: Term Definitions: 1. the reciprocal of the repetition rate; the interval between leading edges of successive pulses.
The total time from when a pulse generator starts generating a pulse to when the next pulse begins, or, when dual pulses are generated, the time to the next new period of pulses. Not to be confused with pulse duration, which is the time that a pulse is active