RIGOL Chapter 8 Protocol Decoding
8-26 MSO4000/DS4000 User’s Guide
CAN Decoding (Option)
The data frame format of the CAN bus is as shown in Figure 5-5
. The ocillsocope
samples the CAN 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 CAN signal type and
sample position for CAN decoding.
Press Decode1 Decode, turn the multi-function knob to select “CAN” and
press the knob. You can press Decode continuously to switch to “CAN”.
Set the CAN 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 8-6.
2. Quickly apply the current CAN trigger setting to CAN decoding
If the current trigger type of the trigger system is CAN, press CopyTrig to copy
the current CAN trigger setting and apply it to the CAN decoding function (set
the corresponding CAN decoding parameters automatically). The settings can be
copied include the source channel, signal type, signal rate and sample position.
If 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 “CAN”;
otherwise, CopyTrig is not available.
Tip
When the current trigger type is “CAN
”, performing the copy operation at any time
can quickly apply the current CAN
trigger setting (the specified parameters) to
CAN decoding. Then, you can still set the CAN
decoding parameters according to
the introductions below.
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