Protocol analysis
R&S
®
RTP
857User Manual 1337.9952.02 ─ 12
2. In the "Serial Bus" dialog > "Display" tab, select additional result display settings:
"Show table" and "Show binary".
3. If required, enable "Zoom coupling"
For a description of the display settings, see also Chapter 13.1.3, "Display",
on page 514.
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 example in Figure 13-33 shows a simulated USBPD message. Among the long
line of decoded frames, the zoom has selected a "Control" frame.
Figure 13-33: USBPD protocol: decoded signal
The results are shown in two tables:
●
"Decode results": contains information about all decoded frames
●
"Details frame": contains more detailed information about the selected frame in the
"Decode results" table.
Table 13-39: Content of the Decode results table
Column Description
State Overall state of the frame
Start Time of frame start
USBPD (option R&S RTP-K63)
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