CTA CTA Process Models & Execution

Question 1

Which NI-supplied TestStand process model is most appropriate for a single-operator, single-UUT manufacturing station?

Accepted Answer

Sequential

Answer

The Sequential process model processes one UUT at a time under a single operator, making it ideal for simple single-station manufacturing.

Question 2

In the TestStand Batch process model, what distinguishes a 'Master' thread from a 'Test Socket' thread?

Accepted Answer

The Master thread coordinates batch flow while Test Socket threads run per-UUT tests

Answer

In the Batch model, the Master thread handles synchronization and batch-level logic while each Test Socket thread independently tests one UUT.

Question 3

What TestStand mechanism allows a process model to pause all test sockets until every socket reaches a synchronization point?

Accepted Answer

Rendezvous

Answer

A Rendezvous object blocks each participating thread until all threads have reached the same point, then releases them simultaneously.

Question 4

Which callback in the TestStand process model is executed once before any UUT is tested, making it ideal for fixture initialization?

Accepted Answer

PreBatch

Answer

The PreBatch callback runs one time before the batch begins, providing the correct hook for station-level fixture initialization.

Question 5

A CTA architect wants the process model to prompt the operator to reseat a UUT upon failure and allow a retest. Which feature enables this?

Accepted Answer

Limit Test retry count property

Answer

The Limit Test step's built-in retry count property allows TestStand to automatically prompt the operator and repeat the measurement a configurable number of times.

(CTA) Certified TestStand Architect Practice Test

(CTA) Certified TestStand Architect Practice Test

CTA CTA Process Models & Execution