Protocol analysisMXO 4 Series
419User Manual 1335.5337.02 ─ 07
1. Open the "Serial Bus" dialog for the respective bus.
2. In the "Setup" tab, enable "State".
3. In the "Display" tab, enable "Show decode table".
For a description of the display settings, see also Chapter 13.1.4, "Display",
on page 315.
The instrument captures and decodes the signal according to the standard definition
and the configuration settings.
The color-coding of the various protocol sections and errors simplifies the interpretation
of the visual display. The decode information condenses or expands, depending on the
horizontal scale. Various data formats are available to show the result values.
Decode results table
The "Decode results" table contains information about all decoded frames.
Table 13-13: Content of the Decode results table
Column Description
Index Frame count
State Overall state of the frame: either OK or the relevant error condition (preamble,
CRC or SFD)
Start Start time of the frame
Type Type of frame (e.g. Idle, MAC or data)
Destination Destination address of the frame
Source Source address of the frame
Type/Length The sub-protocol (e.g. HTML, video, etc.) determines what meaning this field has.
Since the content of this data area is not decoded, the interpretation of this field is
ambivalent. It could either be the word type (specific for the sub-protocol) or the
word length.
Data Value of the data
10BASE-T1S (option R&S MXO4-K560)
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