Modular Test Hardware: VT System

What is the VT System?

VT System

I/O interface modules for ECU testing

To test ECUs thoroughly, it is not only necessary to connect the communication networks to the test system, it is also necessary to connect the I/O interfaces.

This task is handled by the Vector VT System. It simplifies the setup of test benches and HIL test systems immensely, because it integrates all circuit components needed to connect an I/O channel in one module. Examples of I/O channels are an ECU's output for controlling a reading light or input for connecting a liquid level sensor.

Typical tasks

  • Measurement of output signals (voltage, PWM parameters)
  • Display error states such as line breaks or short circuits
  • Interconnect original sensors and actuators
  • Simulate different loads and sensors

The modules are designed for voltages of 28V which are common in aviation. Furthermore they can switch each measuring line to ground or 2 supply voltages. Parallel measuring is possible, too.

Concept of the VT System


When performing functional testing the ECU has to be tested in an environment in which it can see no difference between the real environment and the testing environment.

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