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Using the Oscilloscope
Graphical User Interface
3-28
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.
Run/Stop Controls See figure 3-24. 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 sweep speed. Clicking on this displays a pop-up numeric
keypad so you can set a particular sweep speed. Or, you can click on the two
icons to the right of the sweep speed setting to cycle through the preset speeds.
The left-hand icon shrinks the waveform, which decreases the sweep speed and
increases the time per division. The right-hand icon stretches the waveform,
which increases the sweep speed 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.