Westinghouse tests with XJTAG

Westinghouse Rail Systems is using XJTAG’s boundary scan development system to verify the integrity of its prototype hardware designs


Westinghouse Rail Systems is using Cambridge-based XJTAG’s boundary scan development system to verify the integrity of its prototype hardware designs.



The new hardware will eventually be used in safety critical automatic train control applications.



Engineers at Westinghouse’s headquarters at Chippenham, Wiltshire, are using the system to debug and test highly complex control PCBs. These boards contain multiple high pin-count ball grid array (BGA) devices which are inaccessible to traditional test probes as they are directly mounted to the board via solder balls on the underside of the chip.



XJTAG enables hardware verification to take place without the need to develop specific test software to run on the target board.


Westinghouse’s products are at the heart of many of the world’s major railway and metro networks, with current projects including major refurbishment programmes, such as the London Underground Victoria Line upgrade; and new infrastructure schemes, including the Canada Line Rapid Transit Project in Vancouver.



The XJTAG development system allows developers to debug, test and service electronic printed circuit boards and systems throughout the product lifecycle. According to XJTAG, it can reduce the time and cost of board development and prototyping by allowing early test development, early design validation of CAD netlists, fast generation of functional tests and test re-use across circuits using the same devices.