OPERATOR’S MANUAL
WAVESCAN
Introduction to WaveScan
WaveScan enables you to search for unusual events in a single capture, or to scan for an event in many
acquisitions over a long period of time. You can select from more than 20 search modes (frequency, rise time,
runt, duty cycle, etc.), apply a search condition (slope, level, threshold, hysteresis), and begin scanning in a post-
acquisition environment. Since the scanning modes are not simply copies of the hardware triggers, but "software
triggers," the capability is much greater.
For instance, there is no “frequency” trigger in any oscilloscope, yet WaveScan allows frequency to be quickly
scanned for. You can accumulate a data set of unusual events that are separated by hours or days, enabling
faster debugging. The events are time stamped and indexed in a table from which you can select them for viewing
individually.
You can also set actions to occur automatically when unusual events are found: stop the acquisition, emit an
audible beep, output a pulse, print the screen, save the waveform, or create a LabNotebook entry.
Signal Views
WaveScan provides distinct views of your signal:
• Source view highlights all occurrences of edges that meet your criteria.
• Scan Overlay places all captured edges one on top of the other in a separate grid. You can apply
monochromatic persistence in this view.
• Scan His gram provides a statistical view of edges that meet your search criteria.
•
to
Zoom view allows you to expand a waveform feature vertically and horizontally; to apply further processing;
to store it, or to apply a descriptive label to the feature.
Note: The number of grids displayed varies from one to three grids depending on which views are enabled.
WaveScan handles this function automatically, and there is no option to move traces from one grid to another,
as would be the case under normal (non-WaveScan) operation.
WRXi-OM-E Rev C 147
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