The interval of time between the first and last instant at which the instantaneous value of a pulse (or of its envelope if a carrier frequency pulse is concerned) reaches a specified fraction of the peak amplitude.

Same as on-time. [ Words starting with Q

Pulse duration is defined as the time interval between initial and final points of 10% of maximum signal.

Duration of a laser pulse, usually measured as the time interval between the half-power points on the leading and trailing edges of the pulse.

In radar, sodar, or lidar, the period of time during which a pulse is being transmitted.

The length of time a pulse lasts. Generally described as the length of time the electrical signal holds the pilot valve open (20-40 milliseconds), however would more correctly be the description of the length of time the manifold is pressurized (120-180 milliseconds).