Test & Measurement

Reproducible disturbances of CAN (FD) networks

23rd August 2018
Alex Lynn

For the precise and reproducible disturbance of CAN (FD) networks, Vector has offered the hardware VH6501. The compact device is additionally a network interface for CANoe. This combination of disturbance functionality and interface enables test setups for conformance testing with very little effort.

The VH6501 hardware allows test engineers and developers to produce a wide variety of digital and analogue disturbances precisely and reproducibly in CAN (FD) networks. It is thus ideally suited to automatically test the error handling of ECUs. Such tests are an essential part of indispensable conformity tests in the automotive industry.

On the one hand, VH6501 serves the test tool CANoe as a normal network interface. On the other hand, the fault functionality is controlled via the programming language CAPL (Communication Access Programming Language) integrated in CANoe. Due to this tight CANoe connection, test setups with residual bus simulation can be realised very easily and without additional hardware.

The well-documented CAPL API allows users to configure short circuits in the CAN signal lines, interchanging cables, and modifying R/C network parameters for analog interference. In the case of digital disturbances, almost any digital interference sequences and extensive triggering conditions can be defined. Thus, the VH6501 covers much more than just typical use cases, such as checking the controller behaviour during a bus-off or measuring the sampling time.

The exact visual representation of the disturbances generated by VH6501 and that of the reactions in the CAN (FD) network can optionally be done with the software CANoe Option. Scope and the necessary hardware. This allows a very accurate analysis of the events and helps VH6501 users to create their own tests.

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