Mixed signal option (MSO, R&S RTE-B1)
R&S
®
RTE
907User Manual 1326.1032.02 ─ 20
The digital signals are shown in the diagram, and the signal icon of the parallel bus
appears on the signal bar. Using this bus icon, you can minimize, arrange, and
switch off the bus together with its channels in the same way as you do with any
waveform.
3. Optionally, you can enter a "Label" for each digital channel, and a "Deskew" value
to time-align the channel.
4. Set the logical thresholds as described in Chapter 14.1.6, "Setting the logical
thresholds", on page 907.
5. If the bus has a clock signal, enable "Bus clocked" and select the "Clock source"
and "Clock slope".
Now the configuration of the parallel bus is completed.
14.1.6 Setting the logical thresholds
For a detailed description of the settings, see "Threshold setup" on page 903. Thresh-
old settings are the same for all active parallel buses.
1. On the "Analysis" menu, tap "Parallel buses".
2. To set the thresholds, use one of the following ways:
a) Use the same value for all digital channels and all parallel buses:
● Enable "Coupling".
● To set the threshold, either select a predefined "Technology" value or enter
a user-defined value.
b) Set different thresholds for the individual channel groups:
● Disable "Coupling".
● Set the threshold value for each group. As long as the buses are disabled,
you can set different thresholds for each bus. Active buses use the same
threshold and hysteresis values.
3. Set the "Hysteresis" for each threshold to avoid the change of signal states due to
noise.
14.2 Display
You can adjust the display of the parallel bus signals and the individual digital channels
to optimize the analysis of bus data:
●
Show the digital channels which are assigned to the bus, drag them to the optimal
position, and scale them
●
Show the decoded bus signal in different ways:
– comb display with numeric bus values
– analog display with bus values as amplitudes (quasi-analog waveform)
Display
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