About the client

Alstom - large manufacturer of regional airliners, business jets, mass transportation equipment, and recreational equipment, and a provider of financial services.

The challenge

Support in embedded testing in the LZB (Linienzugbeeinflussung) project for Bombardier Transportation Germany.

What we did

The LZB-Unit supports a switch of connected antenna sets. It can be used with either one or two antenna sets consisting of two transmitter and two receiver antennas each. One antenna set is used for locomotives, while long electric cars are equipped with two sets. This allows to avoid investing in a second system.
The LZB unit was developed to Safety Integrity Level 4 (SIL4), according to the CENELEC standard EN 50129.

Our 4 Embedded Testers are responsible for automated testing, according to test cases.


The Client could deliver the solution in accordance with the project plan and safety rules (CENELEC).

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