Chapter 8 Protocol Decoding RIGOL
MSO4000/DS4000 User’s Guide 8-31
FlexRay Decoding (Option)
FlexRay is a differential serial bus configured with three continuous segments
(packet header, payload and packet end). Its frame format is as shown in Figure 5-7
.
The oscilloscope samples the FlexRay signal on the specified sample position (if the
source is an analog channel, the oscilloscope will also judge each data point (logic
“1” or logic “0”) according to the preset threshold level). You need to specify the
signal type and signal rate for FlexRay decoding.
Press Decode1 Decode, turn the multi-function knob to select “FlexRay”
and press the knob. You can also press Decode continuously to switch to “FlexRay”.
Set the FlexRay decoding (take Decode1 as an example):
1. Turn on or off the Decode1
Press BusStatus to turn the Decode1 bus display on or off. You can also press
Decode1 to switch the current on/off status of the Decode1 display. When the
bus display is turned on, the interface is as shown in Figure 8-7.
2. Quickly apply the current FlexRay trigger setting to FlexRay decoding
If the current trigger type of the trigger system is FlexRay, press CopyTrig to
copy the current source channel and signal rate in FlexRay trigger and apply
them to the FlexRay decoding function. When the source channel is an analog
channel, the threshold level setting will also be copied.
Note: The copy function is only available when the current trigger type is
“FlexRay”; otherwise, CopyTrig is not available.
When the current trigger type is “FlexRay
”, performing the copy operation at any
time can quickly apply the current FlexRay trigger setting (the specified
parameters) to FlexRay decoding. Then, you can still set the FlexRay decoding
parameters according to the introductions below.
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