If you choose Waveform Zoom, the display will zoom in to the portion of the waveform that you
selected, as shown below. Note that you can also select Horizontal Waveform Zoom to zoom
in horizontally, but not vertically.
Press Undo to revert to the previous vertical and horizontal zoom levels.
28 Keysight IntegraVision PA2200 Series Power Analyzers Operating and Service Guide