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Horizontal Acquisition Window Considerations
The instrument lets you define the horizontal acquisition window, that is, set several parameters
that determine the segment of an incoming signal that becomes the waveform record when
acquired. (For background, go to Waveform Record on page 235.) These common parameters
specify a horizontal acquisition window that is applied to all channels in parallel. See Independent
vs. Shared Window on page 233 for more information. These parameters, shown in the figure
below, are:
 Trigger Position: Determines where the trigger event will be located in the waveform record.
To see more pretrigger data move your trigger position to the right on the graticule.
 Horizontal Position: Determines the number of pretrigger and posttrigger samples. Samples
before the trigger point are pretrigger samples and those after the trigger point are posttrigger
samples. When Delay is off, the horizontal position is the same as the trigger position.
 Horizontal Delay: Determines the time from the trigger point to the Horizontal Reference.
 Horizontal Scale: Determines the horizontal size of the window relative to any waveform,
allowing you to scale it to contain a waveform edge, a cycle, or several cycles.
Horizontal Window with Delay On
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