Deployment & Troubleshooting Flashcards

A deployed TestStand system experiences a failure where all test executions hang after a specific instrument step. The instrument is confirmed functional. What TestStand diagnostic approach should you use first?

Answer: Use the TestStand Engine diagnostic logging to trace step execution and identify if a resource acquisition lock is being held indefinitely

Engine diagnostic logging captures detailed execution trace information that can reveal whether a step is blocked waiting on a semaphore, lock, or resource that is never released.

Which TestStand component is responsible for managing the lifecycle of execution threads and should be considered when troubleshooting unpredictable multi-UUT parallel test failures?

Answer: The TestStand Thread Pool Manager within the Engine

The TestStand Engine's Thread Pool Manager governs how parallel execution threads are created, assigned, and terminated, making it central to diagnosing parallel execution anomalies.

After deploying a TestStand update, an operator reports that custom report templates are no longer generating correctly. What is the most likely cause?

Answer: The report template file paths in the Station Options or process model were not updated to reflect new deployment paths

Report template paths are configured in Station Options or the process model, and if these paths are not updated after deployment, TestStand falls back to defaults or fails to find the custom template.

A production TestStand station logs a 'Sequence Checksum Mismatch' error when loading a sequence. What does this error indicate?

Answer: The sequence file has been corrupted or modified since it was deployed, failing integrity verification

A checksum mismatch means the sequence file's stored checksum does not match a recalculated checksum, indicating the file was modified (intentionally or through corruption) after the checksum was recorded.

You need to remotely monitor and control multiple deployed TestStand stations from a central PC. Which NI technology is best suited for this architecture?

Answer: NI SystemLink (or NI TestStand Remote API via .NET remoting)

NI SystemLink provides centralized management, monitoring, and control of TestStand systems across a factory network, including remote execution control and result aggregation.

When troubleshooting a TestStand sequence that occasionally produces false failures on a deployed station but not in the lab, what environmental factor should be investigated first?

Answer: Differences in hardware configuration, driver versions, or instrument calibration state between lab and production

Intermittent false failures on production hardware that don't reproduce in the lab almost always trace to hardware or driver differences, including instrument calibration drift, driver version mismatches, or cabling differences.

A TestStand deployment uses workspace files to organize sequence files. After deployment, the operator interface cannot locate sequences referenced via the workspace. What is the correct fix?

Answer: Update the workspace file's relative or absolute paths to correctly reference sequence file locations on the target

Workspace files contain path references that must resolve correctly on the target machine; updating these paths (or using relative paths anchored to the correct base directory) resolves the issue.