Serial bus analysis
R&S
®
RTM3000
287User Manual 1335.9090.02 ─ 09
To set up and decode a CAN signal
1. Press the [Protocol] key in the Analysis area of the front panel.
2. Select the bus that you want to use: B1, B2, B3 or B4.
3. Select the "Bus Type" = CAN.
4. Select "Configuration".
5. Select the "Source", the channel to which the input signal is connected.
6. Set the threshold. Use one of the following methods:
● Tap "Find Threshold". The instrument evaluates the signal and sets the thresh-
old.
● Enter the threshold value in the numeric field.
7. Set the other signal parameters according to the signal characteristics. For details
on settings, see "CAN configuration settings" on page 287 below.
8. In the "Bus" menu, enable "Decode".
CAN configuration settings
Source.........................................................................................................................287
Threshold, Find Threshold.......................................................................................... 287
Type............................................................................................................................ 288
Bit Rate....................................................................................................................... 288
Sample Point...............................................................................................................288
Source
Sets the source of the data line. All channel waveforms can be used.
If the MSO option R&S RTM-B1 is installed, you can use logic channels as source.
Remote command:
BUS<b>:CAN:DATA:SOURce on page 639
Threshold, Find Threshold
Set the signal threshold for the source channel. Enter a value, or use "Find Threshold"
to set the threshold to the middle reference level of the measured amplitude.
For analog channels, you can find the value also in the "Vertical" menu > "Chan-
nel <n>" > "Threshold"
For logic channels, you can find the value also in the "Logic" menu > "Technology".
CAN (option R&S
RTM-K3)
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