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Protocol analysis
R&S
®
RTO6
852
User Manual 1801.6687.02 ─ 05
Channel Length ← CTLE
Selects the USB Super Speed channel length.
Remote command:
DFE
Defines the settings of the decision feedback equalization (DFE). DFE correction is
needed when the channel is distosrted.
Enable ← DFE
Enables the use of the decision feedback equalization.
Remote command:
Estimate coefficients ← DFE
Enables the use of estimate coefficients.
Remote command:
Coefficient ← DFE
Sets the value of the coefficient.
Remote command:
BUS<m>:USBThree:DFE:COEFficient
Number of Taps ← DFE
Sets a number of taps for the decision feedback filter.
Remote command:
13.21.2.3
Configuring USB 3.1 signals
For configuration, assign the lines to the input channels and define the active states
and the logical thresholds.
1. Press the [Bus] key on the front panel.
2. Select the tab of the bus you want to set up, for example "SB1".
3. In the "Setup" tab, set "Protocol"="USB3.1".
4. Select the "Protocol type".
5. Switch back to the "Setup" tab.
6. Set the logical thresholds: Either enter user-defined values directly in the "Thresh-
old" fields, or set the thresholds to the middle reference levels with "Auto thresh-
olds".
7. Enable "Decode".
USB 3.1 (option R&S
RTO6-K570)