Table Of Contents

Bursting Patterns and Viewing Results

Last Modified: November 23, 2020

The Digital Pattern Editor bursts the pattern on and collects the results for all enabled sites. Use the Site drop-down menu to select the site for which you want to view History RAM results in overlay mode. Click the Enabled Sites button Enabled Sites to launch the Sites dialog box, which you use to enable and disable sites defined in the active pin and channel map, typically for debugging purposes. Refer to the specifications document for the digital pattern instrument for more information about the number of samples supported in History RAM. You can also use the Site drop-down menu on the toolbar to select the site to determine when to stop bursting when you select the Burst Until Fail or Burst Until Pass burst option.

Select the Run»Connect Pins on Burst menu item to enable or disable automatically connecting I/O switches on burst operations.

Use the Burst button pull-down menu Burst to determine how to execute, or run, the loaded pattern. Bursting a pattern from the editor always starts at the first vector of the pattern. Click the Abort button Abort to halt pattern execution.

Viewing Results

The Overlay Last History RAM Results button Overlay History RAM Results on the pattern document toolbar is enabled by default. The editor displays the subset of burst results that corresponds to vectors in the current pattern based on the settings you specify in the Instrument Settings pane. Rebursting a pattern overwrites the History RAM result data in the pattern document in History RAM overlay mode.

The Passed/Failed/Disabled indicator displays whether the last pattern burst includes any failures, regardless of what you log to History RAM, and whether the site was disabled for the last burst of the pattern. Disabled sites do not return results. The Total Failures indicator displays the number of failures in the pattern. The Burst Complete indicator displays the timestamp of when the last pattern burst completed. Pin state data cells with a red background and red text indicate a failure.

Column heading tooltips display the total number of pin failures for the pattern burst for each pin and the number of failures for the pin recorded in History RAM results in parentheses. Cell tooltips display expected and actual values for failures. Pin state data cells with a white or grey background indicate that no data was available for the cycle. Use the navigation buttons on the toolbar to move among the first, previous, next, and last failures in History RAM overlay mode. Expand a pin group to navigate to the individual pins in the group.

Vectors with a blue background display available History RAM results. Vectors with a white background do not include History RAM results. The pattern document displays a dash (-) for the cycle count in the Vector/Cycle column for vectors without History RAM results. For vectors that execute on more than only one cycle, the pattern document in History RAM overlay mode displays the superset of failures for all cycles with History RAM results.

Click the Show History RAM View button Show History RAM View on the toolbar or select View»History RAM to display in a separate document the burst results for the flow of pattern execution across all executed patterns. The History RAM View shows the results for all cycles of a vector logged to History RAM, including those resulting from looping and repeat opcodes. The digital pattern editor automatically displays the History RAM View when the Overlay Last History RAM Results button Overlay History RAM Results is disabled and the digital pattern instrument returns History RAM results for any site of the pattern burst.

Click the Show Digital Scope button Show Digital Scope on the pattern document toolbar or right-click a cell in the pattern document and select Use Digital Scope on Selected Pins and Vectors from the context menu to launch the digital scope, which displays a 2D plot of the actual waveform using the pattern, timing set, and levels.

Refer to the Related reference section at the end of this topic for a link to more information about History RAM and the digital scope.

Bursting Patterns with Source and Capture Waveforms

The Digital Pattern Editor prompts you to load waveforms on the instrument before bursting a pattern if the pattern directly uses a waveform, including waveforms used in patterns that the pattern jumps to. You can also click the Load Waveform button Load or Apply on the toolbar or right-click the waveform file in the Project Explorer window and use the context menu to manually load the current waveform on the instrument. You must specify a name and at least one pin for the waveform. You cannot load a waveform with the same name as another already loaded waveform. Click the Unload All Patterns and Waveform Configurations button Unload to remove all source and capture waveforms and patterns from the instrument. If you modify and save the waveform, you must unload and reload the waveform for the changes to take effect on the instrument. The Digital Pattern Editor prompts you to reload modified files before bursting a pattern.

Select View»Capture Results or click the Show Capture Results View button Show Capture Results View on the capture waveform configuration document toolbar or on the pattern document toolbar to view the capture waveform data from the instrument for the last pattern burst. The capture waveform data updates with each burst. Use the capture_start, capture, and capture_stop opcodes to store values when you burst a pattern. Use the source_start and source opcodes to send waveform data when you burst the pattern.

Refer to the Related information section at the end of this topic for a link to more information about source and capture functionality.


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