Portable R&S oscilloscope troubleshoots automotive applications

Created July 3, 2017
Technologies and Products

Rohde & Schwarz has enhanced its R&S Scope Rider, adding triggering and decoding software for the CAN flexible data rate and single edge-nibble transmission bus systems. The company says it is the only portable oscilloscope capable of analyzing CAN, LIN, CAN-FD and SENT bus signals, making it suitable for troubleshooting automotive applications – from commissioning to drive tests.

The fully-isolated oscilloscope permits differential measurements without the extra equipment typically needed for serial protocols in automotive. This is significantly less expensive than a test setup with a lab oscilloscope and differential probes. The portable oscilloscope also offers a comprehensive set of analysis options for the automotive segment.

Scope Rider offers protocol analysis functionality for SENT, a serial point-to-point protocol defined specifically for sensor communications in the automotive segment. The RTH-K10 SENT triggering and decoding software option offers extensive triggering options for acquiring specific events, data and error states from the fast and slow SENT protocol channels. It also supports the short and enhanced message format and the various available CRC check methods.

Users can also analyze CAN-FD signals. At transmission rates of up to 15 Mbit/s, the CAN-FD serial bus is significantly faster than the standard CAN (up to 1 Mbit/s) and is gaining in importance.

High sampling rate
The digital triggering and decoding unit operates at a sampling rate of 1.25 Gsample/s, irrespective of the analogue or digital channel sampling rates used for signal acquisition. This makes it possible to easily decode serial protocols even when very slow time domain signals are displayed at the same time.

Scope Rider will also display the analyzed protocol in table format together with additional protocol-specific information. Another benefit is the support of symbolic labels. Decoded control signals are displayed in plain text, making it very easy to work with the instrument.

For more information, visit www.rohde-schwarz.com

Matthew Peach

This article was written
by Matthew Peach

Matthew Peach is a freelance technology journalist specialising in photonics and communications. He has previously worked for several business-to-business publishers, editing a range of high-tech magazines and websites.