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Protocol analysis
R&S
®
MXO 4 Series
292User Manual 1335.5337.02 ─ 05
13.2.5 SPI decode results
When the configuration of the serial bus is complete, the signal can be decoded:
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 13.1.3, "Display",
on page 278.
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.
Figure 13-3: Decoded and binary SPI signal
Green brackets [...] = Start and end of complete frame
Red brackets [...] = Start and end of incomplete frame
Yellow = Word
Red = Error
Table 13-1: Content of the "Decode results" table
Column Description
Index Index of the decoded frame
State Overall state of the frame
Start Times of frame start
SPI bus (option R&S MXO4-K510)
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