RIGOL  Chapter 5 Trigger 
5-32  MSO4000/DS4000 User’s Guide 
selected is highlighted in red in the pattern setting area at the bottom of the 
screen.  
 
Note: Channels that are turned off can also be selected as the trigger 
source. 
 
2)  Specify the pattern of the current channel 
Press Code and turn the multi-function knob   to select the desired 
pattern. At this point, the pattern of the channel currently selected is 
highlighted in red in the pattern setting area displayed at the bottom of the 
screen.  
 
: set the pattern of the channel selected to “H”, namely the voltage 
level is higher than the trigger level/threshold level of the channel.  
 
: set the pattern of the channel selected to “L”, namely the voltage 
level is lower than the /trigger level/threshold level of the channel. 
 
: set the pattern of the channel selected to “Don’t Care”, namely this 
channel is ignored (this channel is not used as a part of the pattern). 
Channels set to “Don’t Care” will be ignored. If all the channels in the 
pattern are set to “Don’t Care”, the oscilloscope will not trigger.  
 
,  : set the pattern of the channel selected to the rising or falling 
edge. 
Note: Only a single edge (rising or falling edge) can be specified in the 
pattern. If one edge item is currently defined and then another edge 
item is defined in another channel in the pattern, the former edge item 
defined will be replaced by X (Don’t Care).  
 
3)  Adjust the trigger level/threshold level of the current channel   
Turn TRIGGER 
  LEVEL to adjust the trigger level (when the trigger 
source is CH1 to CH4 or EXT) or threshold level (when the trigger source is 
D0 to D15) (please refer to “
Trigger Level/Threshold Level”). The 
current trigger level/threshold level is displayed at the upper-right side of 
the screen.  
 
Repeat steps 1) to 3) to set the pattern and trigger level/threshold level of all the 
channels in the desired pattern.  
 
 
www.calcert.com sales@calcert.com1.800.544.2843
0
5
10
15
20
25
30