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Connection Test output viewer

From XJTAG version 3.5, users are now able to view all the test data from the automated Connection Test by clicking on a link at the end of the Connection Test results within XJDeveloper, XJRunner, or formatted log files in the XJTAG Log File Viewer. The full output viewer shows the test data for one run of Connection Test at a time, and there is a dropdown box to change between the available test modes. […]

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Debugging Connection Test – part 1 (Updated)

This post is an update to the original “Debugging Connection Test (part 1)” post – over time several features in XJTAG have changed considerably and may be hard to find by following my original post. […]

Terminations to a reference voltage in XJTAG

This post is to clarify how to specify terminations to a reference voltage in XJTAG. There are two special classes of passive device in XJTAG which represent termination resistors. […]

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1149.6 testing in XJTAG

1149.6 testing is coming of age, and though XJTAG has supported IEEE Std. 1149.6 since software version 2.1 (released in 2008) it seems to us that 1149.6 devices are becoming much more common in the last couple of years. […]

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Improving Connection test errors around terminated nets

When helping our customers to understand errors that Connection Test has discovered, we sometimes realise that XJTAG has the information the customer needs, if we were only to display a little more output. […]

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Differential Terminations in XJTAG

This post is to try to clarify what XJTAG understands by the term “differential termination”. […]

How can Checkchain pass but Connection test report “broken chain”?

This is a common question during the development of a test system. The problem generally occurs when a board is first run, and stems from a slight misunderstanding of what Checkchain is designed to do. This article therefore attempts to explain the difference between the Checkchain function and all other tests, in order to explain how this situation can happen. […]

Debugging the Connection Test – part 4 (Logic errors)

With the new Logic support in XJTAG, the connection test can find more errors […]

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Debugging Connection Test – part 3

Solving common Connection Test problems There are several types of error found by Connection Test which regularly (and unsurprisingly) confuse users. This article tries to help out… […]

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Debugging Connection Test – part 2

Understanding the connection test output When Connection Test finds an error on a board it tries to ascertain what the problem is. This may involve carrying out additional checks, to try to eliminate noise on a floating net or cross-talk as a cause of the behaviour. If the fault appears to be genuine then the Connection Test reports the error. […]

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