Over the past 30 years, the development of in-vehicle networks (IVNs) and the CAN bus has been driven by the need for more efficient, reliable, and scalable in-vehicle communication systems. From the early proprietary networks to the sophisticated, multi-protocol architectures of today, IVNs have played a crucial role in the evolution of automotive technology, with CAN bus remaining a cornerstone of this development.
Oscilloscopes are traditionally used to monitor and troubleshoot waveforms by visualizing electrical signals over time, helping identify issues like noise and distortion. Recently, they have gained functionality to interpret digital waveforms and decode payload signals. Modern oscilloscopes can decode protocols like CAN bus, turning electrical pulses into readable data frames. This enables engineers to monitor signal integrity and understand transmitted data, ensuring proper configuration and troubleshooting of in-vehicle networks.
The DLM series oscilloscopes (DLM5000HD, DLM5000, and DLM3000) and ScopeCorders (DL950, DL350) provide the CAN Bus symbolic decode analysis function.
Both instrument families support symbolic decoding to table form and exporting the decoded data to CSV. In addition, DLM series oscilloscopes have an overlay function when zoomed into individual CAN packets. The overlay function displays the CAN packet structure directly below the time domain waveform. Please see the attached screen shots for examples of the DLM and ScopeCorder CAN bus analysis.
A compact, battery-powered, touch screen instrument you can take into the field featuring the deep measurement and recording capabilities you need in the lab.
The Yokogawa Test&Measurement DL950 ScopeCorder captures and analyzes a wide variety of electrical, physical sensor signals, and serial buses. It offers a unique combination of high sampling rates, for a detailed view and long recording times to monitor trends over time.
The DLM3000 series is ideal for any test enviroment thanks to its small footprint.
The DLM3000HD redefines high-definition in a compact design
The DLM5000 series offers versatile measurement options with up to 8 analog channels.
The DLM5000HD series sets a new standard for high-definition oscilloscopes.