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IM DLM3054-01EN
Source (Source)
Select the trigger source. After selecting the trigger source, configure the trigger level, hysteresis, bit rate,
recessive level, HF rejection, sample point, and other settings.
Source (Source)
Set the trigger source to one of the settings below.
CH1 to CH4
Bit Rate (Bit Rate)
Select the CAN bus signal’s transfer rate from one of the settings below.
33.3 kbps, 83.3 kbps, 125 kbps, 250 kbps, 500 kbps, 1 Mbps, User Define
If you select User Define, set the transfer rate in the range of 10 kbps to 1 Mbps in 0.1-kbps steps.
Recessive Level (Recessive)
Select the recessive level from one of the settings below. In either setting, the logical value of the recessive level
is 1, and the logical value of the dominant level is 0.
H
The recessive level is greater than the dominant level.
L
The recessive level is less than the dominant level.
Sample Point (Sample Point)
You can set the reference that will be used to determine the bus level (recessive or dominant) in the range of
18.8 to 90.6% in 3.1% steps.
The instrument’s CAN bus signal trigger circuit samples the input CAN bus signal using the internal clock and
detects the point of change from recessive to dominant. Set the sample point as a percentage, with the detected
point of change equal to 0% and the point that is bit time after the point of change equal to 100%. The bit time is
the inverse of the set bit rate.
1 bit
1 bit
62.5[%]
18.8[%]
90.6[%]
Sample point
If the sample point is set to 62.5%
Input waveform
Waveform sampled
using the internal
clock
Level (Level), HF Rejection (HF Rejection)
Set these items for the trigger source.
These items are the same as those of the edge trigger.
Hysteresis (Hysteresis)
You can apply a hysteresis to the detection level so that level changes within the range will not be detected as
edges.
Selectable range: 0.3 div to 8.0 div
Resolution: 0.1 div
4 Triggering