Protocol analysis
R&S
®
RTO6
840User 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 2.0 (e.g. "SerBus1",
unless already selected).
5. Specify search criteria according to Chapter 13.20.5.1, "USB 2.0 search setup",
on page 833.
6. To acquire a waveform, press [Single].
The R&S RTO6 performs a USB 2.0 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.
13.21 USB 3.1 (option R&S RTO6-K570)
Option R&S RTO6-K570 analyzes Universal Serial Bus (USB) signals encoded by the
USB 3.1 Gen1 coding standard. To use the full functionality of the option, you need an
instrument that covers the frequency range up to 5 GHz, because the USB 3.1 Gen 1
protocol is defined for data rates up to 5 GHz.
For analysis, USB 3.1 encoded signals can be triggered, decoded and searched.
This chapter describes:
● The USB 3.1 protocol............................................................................................840
● USB 3.1 configuration........................................................................................... 848
● USB 3.1 trigger......................................................................................................853
● USB 3.1 decode results........................................................................................ 856
● Search on decoded USB 3.1 data.........................................................................858
13.21.1 The USB 3.1 protocol
The USB 3.1 protocol standard was published on July 26
th
, 2013, strongly enhancing
the performance of the USB 2.0 protocol. Compared to USB 2.0, USB 3.1 defines a
new physical layout, better power distribution and higher data rates.
The USB 3.1 standard features two speed levels (generations):
●
USB 3.1 Gen 1 for 5 Gbps (also labeled "SuperSpeed" or "SS"), encompassing
and superseding USB 3.0 (published on November 12
th
, 2008)
●
USB 3.1 Gen 2 for 10 Gbps (also labeled "SuperSpeedPlus" or "SSP")
USB 3.1 (option R&S R
T
O6-K570)
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