
Using the Oscilloscope
Graphical User Interface
3-27
Run/Stop Control See figure 3-11. At the left side of the bar are four icons:
• The leftmost is a blue-green octagon. Clicking on this starts an acquisition. (Same
as pressing the Run key on the front panel.)
• The next control is a red octagon. Clicking on this stops acquisition. (Same as
pressing the Stop key on the front panel.)
• The next control is a small windshield wiper. Clicking on this clears acquired
waveform data from the display. (Same as pressing the Clear Display key on the
front panel.)
• The next control is a printer. Clicking prints the screen to the default printer.
• The rightmost control is the waveform brightness control.
Horizontal settings and controls The middle of the bar contains the horizontal
settings and controls. Leftmost is a button, labeled with an “H.” Clicking on this
will display the horizontal setup dialog box.
Next is the current horizontal scale. Clicking on this displays a pop-up numeric
keypad so you can set a particular horizontal scale. Or, you can click on the two icons
to the right of the horizontal scale setting to cycle through the preset speeds. The left-
hand icon shrinks the waveform, which decreases the horizontal scale and increases
the time per division. The right-hand icon stretches the waveform, which increases
the horizontal scale and decreases the time per division.
Next is the horizontal position (delay) setting. Clicking on this displays a pop-up
numeric keypad that allows you to set a particular position. Or, you can use the three
icons to the right. The left arrow moves the waveform to the left, the center “0” resets
the delay to zero, and the right arrow moves the waveform to the right.
Across the toolbar are three vertical arrows. These are the left, center, and right
horizontal reference indicators. Clicking on one of these arrows moves the horizontal
position to the respective horizontal reference position on the display—left, center,
or right. Assuming the horizontal position is at zero:
• Left means the information on the display is all post-trigger.
• Center means the information to the left of center is pretrigger; to the right is post-
trigger.
• Right means the information on the display is pretrigger.
The horizontal position value represents the time relative to the trigger at the
respective horizontal reference. When you change the horizontal scale, the
waveforms expand and contract about this reference position.
Trigger settings and controls The right side of the bar contains the trigger
settings and controls. These will vary depending on the current trigger
configuration, which can be set using the front panel and the graphical interface.
Advanced trigger configuration items are available only through the graphical
interface. You can click on the button labeled with a “T” to bring up the trigger
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