Test software allows a close look at Automotive Ethernet

July 25, 2019 //By Nick Flaherty
Tektronix has launched two new software packages that greatly simplify Automotive Ethernet testing, debug and Protocol Decode for use with its 5 and 6 Series mixed signal oscilloscopes (MSO).
Tektronix has launched two new software packages that greatly simplify Automotive Ethernet test, debug and Protocol Decode with its 5 and 6 Series mixed signal oscilloscopes (MSO).

Using the new Signal Separation software, automotive engineers can now handle automotive Ethernet test without disrupting the ECU system or cutting the Ethernet cable to install a directional coupler, while the PAM3 analysis package provides in-depth insight into signal characteristics at the system level.

As the move toward automotive Ethernet or IEEE 802.3bw (formerly BroadR-Reach) technology in vehicles accelerates, comprehensive design validation is vital to ensure interoperability and reliable operation across multiple ECUs. Current Automotive Ethernet testing solutions require engineers install a directional coupler to separate the full duplex signal. This adds insertion and return loss and makes it difficult to determine if an error is a result of the system or the additional hardware.

The Signal Separation software separates the full duplex signal by looking at voltage and current waveforms from both master and slave test points and provides separated signals using a proprietary algorithm. This method displays true ECU signals without the need for a directional coupler and provides full protocol debug of master and slave ECUs simultaneously. It supports full life-cycle automotive Ethernet test from design through service and can be used for in-car testing, as well as signal integrity testing during cranking or other scenarios.

"Vehicles are quickly becoming data centers on wheels, with proven IT technologies finding their way into automotive networks," said Sudipto Bose, general manager, Automotive and Time Domain Solutions at Tektronix. "Because safety and reliability are so critical, testing has become more complicated and time consuming. As these new software offerings demonstrate, we are aggressively developing innovative full life-cycle solutions to simplify and accelerate system testing and product development for automotive engineers - while reducing test times and costs."


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