time base



  • noun a signal used as a basis for timing purposes
  • noun a regular sawtooth signal used in an oscilloscope to sweep the beam across the screen


  • A circuit or device that provides the voltage or signal which deflects an electron beam across the screen of a CRT during each sweep. Such a circuit or device usually utilizes a sweep generator which produces sawtooth waves, thus providing for a linear scan of the spot across the screen. Used in CRT displays such as those of TVs and radars. Also called time-base generator (1).
  • The line formed by the voltage or signal provided by a time base (1).