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Using the Oscilloscope

Graphical User Interface

3-26

See “To zoom on a section of the waveform” on page 3-50.

Ground Reference Indicators A small symbol is shown at the right side of the

waveform display area for each waveform that is on, including channels,

waveform memories, and functions. This symbol represents the ground reference

point for each channel; it moves when you change the vertical offset. You can

also drag this symbol up and down using the mouse or touch screen; doing so

automatically changes the vertical offset for that waveform.

Menu Control and Menus

The display looks like figure 3-2 and figure 3-3, including a menu bar, measurement

toolbar (if enabled), and graphical controls for vertical, horizontal, trigger, and

acquisition.

You can use the menu bar for most oscilloscope configuration functions. Context-

sensitive menus, which pop up to provide a selection of commands within particular

regions of the user interface, are available in the following regions:

• Memory bar

• Waveform display area

• Measurement toolbar

• Horizontal and acquisition controls

You display a context-sensitive menu by clicking the right mouse button with the

pointer in one of these regions. For more information on context-sensitive menus,

see “To select a command from a context-sensitive menu” on page 3-34.

Vertical Settings and Controls The top of the waveform display area includes

the vertical settings and controls. All channels are shown with the corresponding

vertical scaling settings in volts per division. Each has a checkbox allowing you

to turn that channel on or off, and a set of controls allowing you to change the

vertical scaling. Clicking directly on the vertical scaling value displays a pop-

up numeric keypad allowing you to set a precise vertical scale.

Horizontal and Trigger Toolbar

At the bottom of the waveform display area is the horizontal and trigger

toolbar. This includes the run/stop controls, the horizontal controls, and the

trigger controls.

Avoid Overdriving Vertical Input Amplifiers

When zooming on a waveform with the oscilloscope running, be careful to keep

the signal within the screen vertically to avoid overdriving the vertical input

amplifiers. Overdriving causes waveform distortion and erroneous

measurement results.

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Agilent Technologies Ininiium 9000 Guida Utente Pagina 62