Agilent Technologies 54622A User Manual page 42

Front-Panel Overview
Important Oscilloscope Considerations
Post Acquisition Processing
In addition to changing display parameters after the acquisition, you can do all
of the measurements and math functions after the acquisition. Measurements
and math functions will be recalculated as you pan and zoom and turn channels
on and off. As you zoom in and out on a signal using the horizontal sweep speed
knob and vertical volts/division knob, you affect the resolution of the display.
Because measurements and math functions are performed on displayed data,
you affect the resolution of functions and measurements.
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