Chapter 5 Trigger    RIGOL 
MSO4000/DS4000 User’s Guide  5-13 
Pulse Trigger 
 
In pulse trigger, the oscilloscope triggers on the positive or negative pulse with a 
specified width.  
 
For this oscilloscope, the positive pulse width is defined as the time difference 
between the two crossing points of the trigger level and positive pulse and the 
negative pulse width is defined as the time difference between the two crossing 
points of the trigger level and negative pulse, as shown in the figure below.  
 
 
 
 
 
 
 
 
 
 
 
 
Press MENU (in the trigger control area (TRIGGER) at the front panel)  Type, turn 
the multi-function knob   to select “Pulse” and press the knob. You can also press 
Type continuously to switch to “Pulse” trigger.  
At this point, the trigger setting information (include the trigger type, trigger source 
and trigger level/threshold level, as shown in the figure below) is displayed at the 
upper-right side of the screen and changes with the trigger setting.  
 
 
Set the pulse trigger: 
 
1.  Specify the trigger source and adjust the trigger level/threshold level 
1)  Press Source to select CH1 to CH4, EXT or D0 to D15 (please refer to 
“
Trigger Source”). The trigger source currently selected is displayed at 
the upper-right side of the screen. 
Note: Channels that are turned off can also be selected as the trigger 
Positive  
Pulse Width 
Negative  
Pulse Width 
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