March 13, 2013 --- Teledyne LeCroy (Country Manager Woon-Jae Lee, http://teledynelecroy.co.kr ) recently announced the industry's first configurable Manchester and NRZ (none-return-to-zero) protocol decoder for oscilloscope platforms. This decoder enables users to verify various physical layer characteristics of signals encoded in Manchester or NRZ. Additionally, since bit groups can be redefined as word units and words as frame units, it allows for easy and rapid analysis of custom or standard protocols within common encoding structures.

Flexible and customizable protocol decoding
Today, Manchester or NRZ encoding is applied in many parts of data communication protocols. The fields in which these protocols are applied are extensive, ranging from DALI (Digital Addressable Lighting Interface), which is responsible for building lighting control, and PSI5 (Peripheral Sensor Interface 5), which is used to connect controllers in automotive applications to sensors, to proprietary custom buses used for non-standard applications. Designers who develop and debug systems applying these protocols need bus analysis tools that can simplify complex processes.

Teledyne LeCroy’s Manchester and NRZ protocol decoders assist in the design and debugging of custom protocols by providing sufficient flexibility regarding the physical layer, protocol word structure, frame structure, and various parameters. Users can specify bit rates ranging from 10 bits/s to 10 Gbits/s. Additionally, idle state, sync bit, header, and footer information can be configured to decode custom preambles or CRC details. Decoding supports bit or word data modes and can be viewed in HEX, ASCII, or Decimal formats. Bit order can be specified as LSB or MSB. Decoded information is displayed color-coded over the physical waveform, and users can expand or contract the decoded information to view the waveform in detail using the oscilloscope's timebase or zoom functions.

In addition, a powerful search function is provided to quickly retrieve desired information by capturing long decoded Manchester and NRZ waveforms for specific bus information, such as data, sink, and interframe gap. Decoded values are also displayed in a table format, and clicking on the line of desired information allows you to immediately zoom in and view the waveform information.