CAN, LIN and FlexRay Protocol Triggering and Decode for Infiniium 9000 and S-Series Oscilloscopes

Data Sheet

CAN, LIN and FlexRay Serial Buses

The Keysight Technologies, Inc. oscilloscope automotive options help electronic system designers test and debug the physical layer of automotive serial buses faster. CAN, LIN and FlexRay serial buses are the backbone for communication among many separate controllers, sensors, actuators, and ECUs located throughout automotive and industrial designs.

These serial bus interfaces provide content rich points for debug and test. However, since these protocols transfer bits serially, using a traditional oscilloscope has limitations. Manually converting captured 1’s and 0’s to protocol requires significant effort, can’t be done in real-time, and includes potential for human error.

Also, traditional oscilloscope triggers are not sufficient for specifying protocol-level conditions. Extend your oscilloscope capability with Keysight’s CAN, LIN and FlexRay protocol triggering and decode application. This application makes it easy to debug and test designs that include these buses using your Infiniium oscilloscope.

- Set up your oscilloscope to show CAN, LIN or FlexRay protocol decode in less than 30 seconds.

- Get access to a rich set of integrated protocol-level triggers.

- Save time and eliminate errors by viewing packets at the protocol level.

- Use time-correlated views to quickly troubleshoot serial protocol problems back to their timing or signal integrity root cause.

- With the CAN-dbc symbolic trigger and decode capability, engineers can now test the physical layer of this differential bus at a higher abstraction level.

Easy to find

Turn decode on/off via the “Serial Decode” button on the front of the oscilloscope or in the “Setup” menu. View decode embedded on the waveform display or in the protocol viewer listing window.

30 second CAN, LIN or FlexRay setup

Configure your oscilloscope to display protocol decode in under 30 seconds. Use “Auto Setup” to automatically configure sample rate, memory depth, threshold and trigger levels, and clock recovery for FlexRay.

Support for both analog and digital channels

Acquire serial buses using any combination of scope or digital channels. Using digital channels on MSO models preserves analog channels for viewing other time-correlated signals.

CAN, LIN and FlexRay Setup and Protocol Triggering

Get access to a rich set of integrated protocol-level triggers. The application includes a suite of configurable protocol-level trigger conditions specific to CAN, LIN and FlexRay. When serial triggering is selected, the application uses software-based triggering.

Hardware-base triggering for CAN, and LIN ensures reliable triggering even on the most infrequent event. The application used SW-base triggering for FlexRay.

With software-based protocol triggering, the oscilloscope takes signals acquired using either scope or digital channels and reconstructs protocol frames after each acquisition. It then inspects these protocol frames against specified protocol-level trigger conditions and triggers when the condition is met.

Quickly move between physical and CAN protocol layer information using the time-correlated tracing marker. Display protocol content using embedded decode in the waveform area.

Or, see protocol events in a compact listing format. For CAN minor tick marks indicate clock transitions. Major tick marks indicate segments of the serial packet such as ID, DLC, CRC, CAN measurements are automatically time-correlated with measurement on other scope channels.

Import industry-standard .dbc files for symbolic triggering and decode. Message and signal values are displayed on the lister and in the waveform in symbolic format, making it easier to understand the oscilloscope capture.

Long time captures using segmented memory

In this example, CAN traffic was captured for near 9 seconds. Segmented memory uses time tags to track time between segment acquisitions.

Quickly move between FlexRay physical and protocol layer information using the time-correlated tracing marker. Display protocol content using embedded decode in the waveform area. Or, see protocol events in a compact listing format. Minor tick marks indicate clock transitions. Major tick marks indicate segments of the serial packets.

LIN decode embedded in waveform area

Utilize the oscilloscope waveform area to display decode information. Minor ticks indicate clock transitions, and major ticks show segments within each LIN packet.

FlexRay and LIN Protocol Decode

Solution includes FlexRay receiver clock recovery necessary for protocol decode and triggering.

Post-acquisition searching

Search acquired protocol listings using a menu that is identical to the trigger menu. Quickly move to next occurrence of a specified event.