252 Keysight InfiniiVision 3000T X-Series Oscilloscopes User's Guide
15 Measurements
 
To isolate a pulse for Top measurement
The following figure shows how to use Zoom mode to isolate a pulse for a Top 
measurement.
You may need to change the measurement window setting so that the 
measurement is made in the lower, Zoom window. See “Measurement 
Window" on page 272.
Base
The Base of a waveform is the mode (most common value) of the lower part of the 
waveform, or if the mode is not well defined, the base is the same as Minimum. 
The Y cursor shows the value being measured.
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).
Figure 47 Isolating area for Top measurement