Chapter 5 Trigger    RIGOL 
MSO4000/DS4000 User’s Guide  5-15 
adjust the pulse width within a relatively larger range, this function can help 
you quickly finish the setting. 
 
  When the pulse width condition is set to 
 or  ,  
press Upper Limit and Lower Limit respectively and use the 
multi-function knob 
 or the navigation knob to adjust the upper limit and 
lower limit of pulse width. The range of the upper limit is from 12 ns to 4 s. 
The range of the lower limit is from 4 ns to 3.99 s.  
Note: 
―  The lower limit of the pulse width must be lower than the upper limit. 
―  You can use the outer knob of the navigation knob to quickly adjust the 
upper limit and lower limit of pulse width within a relatively larger 
range.  
 
4.  Specify the trigger mode 
Press Sweep to select “Auto”, “Normal” or “Single” (please refer to “Trigger 
Mode”). The corresponding status light of the trigger mode currently selected in 
the trigger control area (TRIGGER) at the front panel turns on.  
 
5.  Set the trigger holdoff and noise rejection 
Press Setting to enter the trigger setting submenu. In this submenu: 
1)  Press Holdoff to adjust the holdoff time (please refer to “Trigger 
Holdoff”). The range is from 100 ns to 10 s. 
2)  Press Noise Reject to turn the noise rejection on or off (please refer to 
“
Noise Rejection”). 
Note: When the trigger source is D0 to D15, the noise rejection is invalid. 
 
 
 
 
 
 
 
 
 
 
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