Instruction Manual ENETbusD Decoder
ENETbusD Decoder Instruction Manual © 2013 Teledyne LeCroy, Inc. All rights reserved. Unauthorized duplication of Teledyne LeCroy documentation materials other than for internal sales and distribution purposes is strictly prohibited. However, clients are encouraged to distribute and duplicate Teledyne LeCroy documentation for their own internal educational purposes. Teledyne LeCroy is a registered trademark of Teledyne LeCroy, Inc. Windows is a registered trademark of Microsoft Corporation.
Instruction Manual TABLE OF CONTENTS Introduction .................................................................................................................. 2 About This Manual .................................................................................................................. 2 ENETbusD Option Overview .................................................................................................... 2 Serial Decode Technical Overview ................................................
ENETbusD Decoder Introduction About This Manual Teledyne LeCroy offers different toolsets for decoding and debugging serial data streams. These toolsets may be purchased as optional software packages, or are provided standard with SDA and DDA model oscilloscopes. This manual explains how to use the ENETbusD toolset.
Instruction Manual Serial Decode Technical Overview The algorithms described here at a high level are used by all Teledyne LeCroy serial decoders sold for oscilloscopes. They differ slightly for serial data signals that have a clock embedded in data or a clock separate from data. The first software algorithm examines the embedded clock for each message based on a default (or user specified) vertical level.
ENETbusD Decoder 3. Use the various analysis tools to verify that transitions are being correctly decoded. Tune the decoder settings as needed. 4. Run the decoder on acquisitions of the desired length. You can disable/enable the decoder as desired without having to repeat the set up and tuning provided the basic signal characteristics do not change. Setting Up the Decoder You can preset up-to-four, independent decoders using the same or different protocols and data sources.
Instruction Manual Enable/Disable Decoder Once preset, the four decoders can be enabled simultaneously or separately as often as you wish, although this number may be limited depending on the type of source channels selected. Preset decoders can be easily disabled without disrupting the configuration. To enable: Press the Front Panel Serial Decode button, or choose Analysis > Serial Decode, to open the Serial Decode dialog, then check Decode On next to the respective decoder.
ENETbusD Decoder 3. Touch any measurement operation to select it. Options are: View Serial Encoded Data as Analog Waveform - Automatically sets up a Message to Value parameter and then tracks the assigned measurement. In doing so, a Digital-to-Analog Conversion (DAC) of the embedded digital data is performed and the digital data is displayed as an analog waveform. Message to Value - Extract and convert a specific portion of the data/payload in the message and display it as an analog value.
Instruction Manual Working with the Decode Trace Serial Decode Annotations When a decoder is enabled, an annotated waveform showing the results of the decode appears on the oscilloscope display. A colored overlay marks significant transitions in the source signal. The overlay contains annotations corresponding to the data itself, any pre/post-message padding, inter-burst periods, etc. Each set of annotations is customized to the protocol or encoding scheme.
ENETbusD Decoder Search Waveform Choosing Search on the Decode Setup dialog opens a Zoom of the original decoded waveform and displays the corresponding Zoom dialog with the standard rescaling controls. Use the Search right-hand dialog to enter the search criteria. Then, use the navigation buttons on the Search dialog to find the previous or next event in the trace that matches the search criteria.
Instruction Manual Frame Length Error Preamble Value Error SDF Value Error CRC Error Data Size Error Unknown - Next occurrence of an unknown frame type. Working with the Results Table By default, a table summarizing the decoder results appears below the grids whenever a decoder is enabled. The decode result table provides a view of message data as decoded by the oscilloscope during the most recent acquisition, even when messages are too compact to allow annotation on the waveform trace.
ENETbusD Decoder Customize Decode Result Table Follow these steps to change which decode values appear in the result table: 1. Press the Front Panel Serial Decode button, or choose Analysis > Serial Decode, then open the Decode Setup tab. 2. Touch the Configure Table button. 3. On the View Columns pop-up dialog, check boxes for the columns you want to appear in the table. Clear boxes for any columns you wish to remove. Only those columns selected will appear on the oscilloscope display.
Instruction Manual Navigating with the Result Table Besides displaying the decoded serial data, the result table enables you to quickly Zoom regions of the decoded waveform and control decoder dialogs. The first column heading (top, left-most cell of the table header) bears the name of the corresponding protocol, and the cell's fill color matches the color of the input source. Touching this cell opens the Decode Setup dialog if it has been closed.
ENETbusD Decoder Teledyne LeCroy Service Centers United States and Canada - World Wide Corporate Office Teledyne LeCroy Corporation 700 Chestnut Ridge Road Chestnut Ridge, NY, 10977-6499, USA Ph: 800-553-2769 / 845-425-2000 FAX: 845-578-5985 teledynelecroy.com Support: contact.corp@teledynelecroy.com Sales: customersupport@teledynelecroy.com United States - Protocol Solutions Group Teledyne LeCroy Corporation 3385 Scott Boulevard Santa Clara, CA, 95054, USA FAX: 408-727-0800 teledynelecroy.
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