The JT Application Benchmark is a project of the prostep ivip Association (PSI) and the German Association of the Automotive Industry (VDA). Aim of the benchmark is the fair capability as-sessment and improvement of interoperability between currently available JT applications.

It is composed of two building blocks: A translation quality benchmark, where interoperability effectiveness of JT translators is examined from CAD to JT and JT to CAD as well as a viewer benchmark, where the abilities of viewers in reading and displaying the generated files are tested.

The focus in translation quality is the correct data exchange of geometry, product structure and metadata from CAD to JT and STEP AP242 XML on the one side, and from JT and STEP AP242 XML back to CAD on the other. Also, the transfer of graphical PMI annotations is exam-ined.

The viewer tests focus on the abilities of the viewer to load the generated JT and STEP AP242 XML models and display geometry, product structure, metadata and PMI annotations.