Agilent Technologies 54810A User's Quick Start Manual page 63

You can still use the front panel when the graphical interface is enabled.
All changes made to the front-panel settings are reflected in the
graphical interface, and changes made using the graphical interface are
reflected in the front panel where applicable. Use whichever interface
is easiest for you in a particular measurement situation. For example, it
might be easiest to set a coarse vertical scale using the knobs, then fine-
tune the setting using the graphical interface.
The graphical interface is arranged so the most common functions that
affect the waveform display are located around the edge of the waveform
display area. These include the measurement toolbar, horizontal and
trigger toolbar, and vertical toolbar.
Measurement Toolbar
The measurement toolbar contains icons representing the most
commonly used automatic measurements built into the oscilloscope.
Drag and Drop Measurements
icons to a waveform in the waveform display area, you can make that
measurement on the waveform. As you drag a measurement icon around
the screen, the icon outline changes color to match the color of the
closest waveform. This makes it easy to see which waveform will be
measured when you drop the icon. For those measurements that are
done on waveform features, the measurement is made at the feature
closest to the location where you dropped the icon. For example, you
might want to measure the rise time of the fifth rising edge; dropping
the rise time measurement icon at that edge will cause the measurement
to be made on that edge.
You can also make a measurement by simply clicking the icon on the
measurement toolbar, then selecting the source to be measured in the
dialog box that appears. When you start a measurement this way, any
measurements on waveform-specific features will measure the first
appropriate feature on the waveform. For example, a rise time
measurement will measure the first rising edge on the waveform.
Each waveform can have multiple simultaneous measurements and the
measurements can all be of the same type, if desired. For example, you
can have 3 pulse width measurements on different parts of the same
waveform.
Using the Oscilloscope
By dragging one of the measurement
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