RIGOL Chapter 7 Protocol Decoding
7-22 DS4000E 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 and then judges 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”.
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 7-6.
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.
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.
3. Specify the source channel
Press Source; turn the multi-function knob to select the desired source
channel and press the knob. You can also press Source continuously to switch
the current source channel. You can select CH1 to CH4.
When a channel (CH1 to CH4) is selected, you can press Threshold and turn
the multi-function knob
to adjust the threshold (the default is 0 V) of the
source channel. Pressing the multi-function knob
can quickly reset the
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