MOST Compliance and Quality
Reliable Diagnostics of a MOST System
Fortsetzung des Artikels von Teil 3
Efficient test environment for reliable networks
TTsuite is able to control any additional tools needed for the test setup. In this case, TTsuite controls Ruetz System Solutions’ ECL/CAN Box and Breakout Box, with OptoLyzer and a power supply (see Figure 2). The MOST bus of the test setup is set via the OptoLyzer module. The ECL bus is formed by the ECL/CAN Box. The Breakout Box is a device for configuring the test setup. This hardware interface serves as an expansion of the TTsuite test bench in order to automatically execute the test setup described in the test specification. It is connected to the power supply of the DUT, and to the ECL line of the DUT. The ECL/CAN Box is a device for sending wake-up and test sequences of the ECL and for receiving subsequent replies from the DUT and forwarding them to the TTsuite via the interface. Apart from this, connected control devices can be woken up by CAN messages from the ECL Box.
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The documentation of the test results is fundamental in the compliance verification process. It shall include detailed information about the behaviour of the DUT and recommendations for improvement if necessary. TTsuite provides a test report with a chart about the test result, including a statistical overview. The tool also provides a graphical test protocol, which has the same structure and look as the test specification from the MOST Cooperation. So it is very easy to analyze and understand the test protocol and to compare it to the test specification (see Figure 3).
This new, fully automated ECL test system ensures global consistency regarding test results. The benefits of using this test system are apparent. Executable test specifications, detailed documentation of test results, easy to analyze test protocols provide transparency and allow unambiguous, clear communication between tester and developer regardless whether the tester sits in a MCTH or in-house with the developer. The devices can be validated using this test system from the beginning of the development via in-house tests.
- Reliable Diagnostics of a MOST System
- Electrical control line in a MOST network
- Qualified testing through automation
- Efficient test environment for reliable networks
- The author:
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