Protocol analysis
R&S
®
RTP
819User Manual 1337.9952.02 ─ 12
TRIGger<m>:USB:TMIN on page 2016
TRIGger<m>:USB:TMAX on page 2016
13.18.3.2 Triggering on USB 2.0
Prerequisite: A bus is configured for the USB 2.0 signal to be analyzed.
For the basic trigger settings, proceed in the following way:
1. Press the [Protocol] key and selet the "Shortcuts" tab.
2. Press "Setup trigger".
3. Tap the "Source" button and select the "Serial bus" trigger source.
4. Select the serial bus that is set to USB 2.0.
5. Tap "Trigger Type USB" and select the trigger type to be used for USB protocol
analysis.
Available trigger types depend on the USB 2.0 protocol type that is activated in
"Protocol type" on page 807.
6. Depending on the selected USB 2.0 protocol type and trigger type, more setup
conditions have to be specified.
For information on how to proceed with the configuration settings, see Chap-
ter 13.18.3.1, "USB 2.0 trigger settings", on page 811.
13.18.4 USB 2.0 decode results
When the configuration of the serial bus is complete, the signal can be decoded:
1. In the "Serial Bus" dialog > "Setup" tab, enable "Decode".
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.
USB (option R&S
RTP-K60)
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