Wednesday, February 28, 2007

 

Oscilloscope turns to FlexRay measurements

Measurement system provides the highest-level FlexRay triggering and protocol decode measurements available in an oscilloscope.

Agilent Technologies and Dependable Computer Systems (Decomsys) have introduced a measurement system that provides the highest-level FlexRay triggering and protocol decode measurements available in an oscilloscope. This new measurement solution allows automotive designers who use embedded microprocessors to verify proper signal integrity of their FlexRay signals and proper timing of the time-triggered communication bus. The measurement system combines an Agilent 6000 Series mixed signal oscilloscope (MSO) with a Decomsys::Busdoctor 2 protocol analyser to provide the first time-correlated slot/segment boundary display of the global FlexRay timing schedule on an oscilloscope.

The FlexRay serial bus is an automotive communication bus with a time-triggered, deterministic architecture.

This higher-performance and fault-tolerant serial bus is gaining rapid adoption in the design of some of today's higher-end automobiles including BMW's X5 SUV, where it initially is being used to support a suspension application.

Because of the fault-tolerant nature of the FlexRay protocol, FlexRay technology is expected to be used in the near future for many safety-critical applications such as steer-by-wire, brake-by-wire and collision-avoidance systems.

When used in combination with the Decomsys::Busdoctor 2 protocol analyser, Agilent's FlexRay option for the 6000 Series mixed signal oscilloscopes offers a robust set of FlexRay frame, slot and error triggering, including the ability to trigger on specific FlexRay communications qualified on base-cycle and cycle-repetition.

Designers can see a synchronous and time-correlated display of segment and slot-timing boundaries by importing a Fibex file that defines the global FlexRay schedule directly into the 6000 Series mixed signal oscilloscope.

This capability allows the system to be used as a stand-alone tester (no external PC required).

Alternatively, the Decomsys::Busdoctor 2 and MSO can be configured for synchronous operation using Decomsys' Vision software package.

This type of system configuration provides higher-level FlexRay protocol analysis measurements on the PC and time-correlated FlexRay measurements on the oscilloscope's display.

The Agilent N5432A FlexRay triggering and real-time decode option for the 6000 Series mixed signal oscilloscope is priced at $2500.

The Decomsys::Busdoctor 2 FlexRay protocol analyser and optional MSO communication cable can be ordered directly from Decomsys.





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