deadtime

noun3

1. •
   The time between a change in a signal and the response to that change.
2. •
   The time, after an event, during which a system cannot respond to a second event.
3. •
   (slang) The serving of a prison sentence.

   • And I'll tell you something else, if you weren't a cop, I'd have you doin’ dead-time at Leavenworth, for life! — 1994