Measurements and Math Functions 5
InfiniiVision 7000B Series Oscilloscopes User’s Guide 175
Preshoot
Preshoot is distortion that precedes a major edge transition expressed as a
percentage of Amplitude. The X cursors show which edge is being
measured (edge closest to the trigger reference point).
Overshoot
Overshoot is distortion that follows a major edge transition expressed as a
percentage of Amplitude. The X cursors show which edge is being
measured (edge closest to the trigger reference point).
Rising edge preshoot =
Base - D local Minimum
Amplitude
-----------------------------------------------------------
X 100
Falling edge preshoot =
local Maximum - D Top
Amplitude
----------------------------------------------------------
X 100
local Maximum
local Minimum
Preshoot
Preshoot
Top
Base
Rising edge overshoot =
local Maximum - D Top
Amplitude
----------------------------------------------------------
X 100
Falling edge overshoot =
Base - D local Minimum
Amplitude
-----------------------------------------------------------
X 100