Rohde & Schwarz RTE Series - Configuring USB Signals

Protocol analysis
R&S
®
RTE
824User Manual 1326.1032.02 ─ 20
D+, D-
Define the source settings for the D+ and the D- data signals for USB low speed and
USB full speed protocols.
Usually, the source is one of the analog channels. Reference and math waveforms are
available as source if the trigger source is one of the analog channels but not the serial
bus.
Remote command:
BUS<m>:USB:DPLus:SOURce on page 1792
BUS<m>:USB:DMINus:SOURce on page 1792
Differential
Defines the source settings for the differential data signal (in USB high-speed protocol,
only). You can select analog channels "C1" to "C4", and also active math and refer-
ence waveforms as source. If you want to trigger on the serial bus, analog channel
sources are required.
Remote command:
BUS<m>:USB:DIFFerential:SOURce on page 1792
Data, Strobe
Define the source settings for the data and the strobe signals in USB HSIC protocol.
You can select analog channels "C1" to "C4", and also active math and reference
waveforms as source. If you want to trigger on the serial bus, analog channel sources
are required.
Remote command:
BUS<m>:USB:DATA:SOURce on page 1792
BUS<m>:USB:STRobe:SOURce on page 1793
Thresholds
Sets the threshold value for the digitization of each signal line. If the signal value on the
line is higher than the threshold, the signal state is high. Otherwise, if the signal value
is below the threshold, the signal state is considered low.
"Threshold"
Enter the value directly in the field.
"Auto thresh-
olds"
Executes the measurement of reference levels and sets the thresh-
olds to the middle reference level of the measured amplitude.
Remote command:
BUS<m>:USB:DPLus:THReshold on page 1793
BUS<m>:USB:DMINus:THReshold on page 1793
BUS<m>:USB:DIFFerential:THReshold on page 1794
BUS<m>:USB:DATA:THReshold on page 1794
BUS<m>:USB:STRobe:THReshold on page 1794
BUS<m>:SETReflevels on page 1421
13.16.2.2 Configuring USB signals
For configuration, assign the lines to the input channels and define the active states
and the logical thresholds.
USB (option R&S
RTE-K60)