The scope of this project is to provide the means to define and describe signals used in testing. The standard provides a set of common basic signals, mathematically underpinned so that signals can be combined to form complex signals usable across all test platforms. The provision of language elements supports test signal descriptions for interoperability. The purpose of the standard is to provide a common signal reference for use throughout the life cycle of a unit under test or test system. This will in turn facilitate information transfer, test reuse and broader application of test information - accessible through commercially available development tools. New IEEE Standard - Superseded. To provide the means to define and describe signals used in testing. The standard provides a set of common basic signals, mathematically under pinned so that signals can be combined to form complex signals useable across all test platforms. The provision of language elements supports test signal descriptions for interoperability.