Protocol analysis
R&S
®
RTO6
861User Manual 1801.6687.02 ─ 05
3. If the dialog box does not contain a search entry, tap the "Add" icon to create one,
as described in "T
o create a user-defined search"
on page 434.
4. Tap "Source" and select the serial bus that is set to USB 3.1 (e.g. "SB1", unless
already selected).
The search dialog for USB3 protocol analysis is opened.
5. Specify search criteria according to Chapter 13.21.5.1, "USB 3.1 search setup",
on page 858.
6. To acquire a waveform, press [Single].
The R&S RTO6 performs a USB 3.1 decode according to the thresholds and proto-
col settings of the associated serial bus source (here in our example SB1).
7. To start searching the acquired waveform for specific events, tap "Enable" in the
search setup dialog:
The R&S RTO6 displays the "Search Results" box that lists the detected events.
For information on how to configure the search results presentation and how to navi-
gate the search results, see also "To display search zoom windows" on page 442.
13.22 USBPD (option R&S RTO6-K570)
R&S RTO6-K570 is a firmware option that enables the R&S RTO6 to analyze Universal
Serial Bus Power Delivery (USBPD) signals.
For analysis, USBPD encoded signals can be triggered, decoded and searched.
This chapter describes:
● The USB power delivery protocol..........................................................................861
● USBPD configuration............................................................................................ 863
● USBPD trigger.......................................................................................................866
● USBPD decode results......................................................................................... 870
● Search on decoded USBPD data..........................................................................872
13.22.1 The USB power delivery protocol
The requirements on the USB have changed in the last years with the need of provid-
ing power through the USB port additionally to the data transfer. The USBPD specifica-
tion aims to define standard for optimizing the power usage through the USB for the
needs of the users.
USBPD characteristics
Main characteristics of USBPD are:
●
Power direction is not fixed
●
Negotiation of required power amount between devices
USBPD (option R&S R
T
O6-K570)
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