NIST maintains a tool known as the PCD Test tools. It offers a suite of Connectathon and Pre-Connectathon tests for the HL7v2 based transactions from the Patient Care Device domaine.
As a preparation to the Connectathon, you are requested to execute the test cases relevant to your system under test.
When done, post an evidence that the tests have been run in Gazelle Test Management.
The tool is available here: https://ihe-pcd.nist.gov/pcdtool/#/cb
In the "Context-based" tab, make sure you select the Pre-Connectathon test plan for the latest development cycle.