R&S scopes add option for Manchester and NRZ

Aug. 11, 2015

Munich, Germany. Rohde & Schwarz has expanded its range of trigger and decoder options for the R&S RTO and R&S RTE oscilloscopes. With the R&S RTx-K50, the oscilloscopes help users debug serial protocols that employ Manchester or NRZ coding. The option can be used with a variety of standardized buses such as PROFIBUS, DALI, or MVB as well as with proprietary serial protocols such as are typically found in industrial environments and in the aerospace and defense sector. Developers of products that use these types of interfaces can easily find implementation errors and so test and release their designs more quickly.

The option, which covers data rates of up to 5 Gb/s, supports up to 50 different telegram formats, while the format of the serial bus can be configured flexibly. Users can define their own preamble, frame ID, data, CRC, and other telegram fields. Protocol decoding also takes Manchester code violations into account.

High acquisition rates and minimal blind times are provided by the hardware-based trigger implementation on the R&S RTO and R&S RTE oscilloscopes. Users can trigger on telegram and data content with the R&S RTx-K50 option. The decoded protocol content is displayed in an easy-to-read, color-coded format. Time correlation with the analog signal makes it easy to identify faults caused by signal integrity problems. A tabular list of the protocol contents is also provided. The standard mask test with up to 600,000 tests per second makes it possible to check the signal quality faster with an eye diagram than with any other solution. In addition, both oscilloscope series from Rohde & Schwarz support the option of decoding up to four different serial protocols in parallel.

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About the Author

Rick Nelson | Contributing Editor

Rick is currently Contributing Technical Editor. He was Executive Editor for EE in 2011-2018. Previously he served on several publications, including EDN and Vision Systems Design, and has received awards for signed editorials from the American Society of Business Publication Editors. He began as a design engineer at General Electric and Litton Industries and earned a BSEE degree from Penn State.

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