Chapter 5 To Trigger the Oscilloscope    RIGOL 
MSO7000/DS7000 User Guide  5-3 
Trigger LEVEL/Threshold Level 
 
The adjustment of the trigger level/threshold level is related to the type of the trigger 
source. 
 
⚫  When the trigger source is selected from CH1 to CH4, rotate the Trigger   
LEVEL knob to adjust the trigger level. During the adjustment, a trigger level 
line  (the  color  of  the  trigger  level  line  should  be  consistent  with  that  of  the 
channel color) and a trigger label " " are displayed on the screen, and they 
move up and down with the variation of the trigger level. When you stopping 
modifying the trigger level, the trigger level line disappears in about 2 s. The 
current trigger level value is displayed at the upper-right corner of the screen. 
Note: In Runt Trigger, Slope Trigger, and Window trigger, you need to set the 
upper and lower limits of the trigger level. You can modify the level by rotating 
the Trigger    LEVEL knob. The difference between the current upper limit 
and lower limit of the trigger level is displayed at the upper-right side of the 
screen. Two trigger level labels (   and  ) are displayed at the left side of the 
screen. Meanwhile, the real-time trigger level information is displayed at the 
lower-left side of the screen, as shown in the figure below. H indicates the upper 
limit of the trigger level, L indicates the lower limit of the trigger level, and  △ 
indicates the deviation of the trigger level. 
 
 
⚫  When the trigger source is EXT, rotate the Trigger    LEVEL knob to adjust 
the trigger level. The current trigger level value is displayed at the upper-right 
corner of the screen. 
Note:  For  this  trigger  source, only  the  variation  of  the  trigger  level  value  is 
displayed  on  the  screen  during  the  adjustment  of  the  trigger  level,  without 
displaying the trigger level lines on the screen. 
 
⚫  When the trigger source is AC Line, there is no trigger level. 
 
⚫  When  the  trigger source is  selected from  D0  to  D15, rotate  the  Trigger   
LEVEL knob to adjust the threshold level. The current threshold level value is 
displayed at the upper-right corner of the screen. In addition, you can also press 
LA to enter the LA logic analysis setting menu. Then set the threshold level of 
the digital channel in the sub-menu threshold setting. For the setting method, 
refer to "To Set the Threshold". 
You can also enable the touch screen function to adjust the trigger 
level/threshold level. Two methods are available for you: