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Welcome to the T-VEC Wiki



The T-VEC wiki provides information about T-VEC's suite of tools, how to use them, and any other related information. It has no specific topic, but is for all things related to T-VEC. Everyone has access to the wiki, but only registered users can edit content. We encourage users to donate meaningful documentation and information to the T-VEC wiki. If you are new here, you must register for a username/password. All documentation contributed is covered by the documentation license.

Recent updates

2013: Notable updates to the T-VEC tools:
  • VGS: updates to the Visual Environment and report generation
  • VGS: new coverage analyzer mechanisms for skipping DCPs related to Inlined Subsystems
  • TTM: support for character arrays and support for indexing strings like arrays
  • TTM: support for additional array element assignment syntax tableName[i] = value
  • TTM: support for expressions in array indexes
  • All: updates related to Microsoft Redistributable libraries
  • Demonstration integration with MetaEdit+
2012: Notable updates to the T-VEC tools:
  • SL2TVEC: sfunction substitution mechanism
  • SL2TVEC: Support for the Bus-to-Vector block
  • SL2TVEC: Support for Direct Lookup ND block
2010: Notable updates to the T-VEC tools:
  • VGS: include Universal Quantification over arrays, with integrated support through TTM
  • VGS: support for the new “Subsystem Inlining Depth”
  • TTM: support for 1-Dimensional Array variables
  • TTM: Local table variables for specifying and utilizing persistent state information
2009: Updates to all the T-VEC tools have been released. Major changes include:

VGS changes:

  • The Scenario View - This provides customer configuration of test vector generation on a DCP by DCP, or sets of DCPs, basis.

TTM changes: 1-Dimensional Array variables, and Local table variables for specifying and utilizing persistent state information.

October-2008: New coverage option Force Block Output Propagation that extends the ForcePaths/ForceConditions coverage options.
Feb-2008: Enhancements to TTM/T-VEC Model Checking features of Output and Term Table Disjointedness Checking and Mode Machine Race Condition Checking.
Feb-2008: Updates in Simulink 2007a provide better integration for automated test driver generation of stateflow See also LDRA Integration for Model References
May-2008: String functionality in TTM

Upcoming changes

T-VEC is constantly improving our tools. Upcoming changes:
  • Global Variables to support global state
  • Support for control/closed loop feedback related requirement
  • Constant structures and arrays
  • Model includes referencing parametrized models
  • Temporal Operators in TTM
  • Floating point precision control option in VGS
  • Visual display of dcp path in Matlab.
  • Test Driver Access to TTM Comments/Requirement Text
  • State variable and associated initialization mechanisms
  • Variation for array expression that is more concise for values applied to entire arrays

Getting Started

The multi-media video provides a quick way to get a Tool Suite Overview.

The T-VEC suite of tools provide model-based test support. The tools include:

  • T-VEC Vector Generation System (VGS)
    • VGS is the engine that provides model analysis, test vector generation, test driver generation, test results analysis, project status, and measurement reporting

If you're new to modeling, TTM is easy to use, and you can create your first model in a matter of minutes. TTM integrates seamlessly with VGS, and with one mouse click tests for your first model can be produced quickly. TTM has built-in help, tutorials, and course exercises built-in to the installation.

Simulink users can use SL2TVEC and VGS to support model analysis, test generation, and execution for auto-generated code, manually produced code, and the Matlab simulator.

VGS is the core T-VEC technologies developed in the late 1980's and early 1990's. It is a rather mature technology, and has not changed in any real fundamental way since the documentation. Most of the default setting provide the optimal set of tests.

Pilot Projects or Workshops are often the best way to get started with T-VEC tools.


Tvecwiki provides guidance on using the tools, from installation, tutorials, usage, and FAQs.

Other Common Questions