Chapter 5 To Trigger the Oscilloscope RIGOL
MSO7000/DS7000 User Guide 5-43
FlexRay Trigger (Option)
MSO7000/DS7000 can trigger on the specified frame, symbol, error, or position of
the FlexRay bus.
FlexRay is a type of differential serial bus configured with three consecutive
segments (i.g. header, payload, and trailer). Its data transmission rate is up to 10
Mb/s. Each frame contains a static segment and a dynamic segment, and ends with
the bus idle time.
Its format is as shown in the figure below.
Figure 5-19 Frame Format of FlexRay Bus
Trigger Type:
Press Type, and then rotate the multifunction knob to select "FlexRay". Press
down the knob to select the trigger type. Then, the current trigger setting
information is displayed at the upper-right corner of the screen, as shown in the
figure below. You can also press Type continuously to select the trigger type or
enable the touch screen to tap the desired trigger type and select it.
Source Selection:
Press Source to open the signal source list and select CH1-CH4 or D0-D15. For
details, refer to descriptions in "Trigger Source". The current trigger source is
displayed at the upper-right corner of the screen.
Note: Only when we select the channel (that has been input with signals) as the
trigger source, can we obtain a stable trigger.
Baud Rate:
Press Baud, and rotate the multifunction knob to select a FlexRay baud rate that
matches the FlexRay bus signal. Then press down the knob to select the baud rate.
You can also press Baud continuously or enable the touch screen to select it. The
available baud rates are 2.5 Mb/s, 5 Mb/s, and 10 Mb/s.
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