Chapter 6 Operations and Measurements    RIGOL 
MSO4000/DS4000 User’s Guide  6-15 
6.  Turn the invert on or off 
Press Invert to turn the inverted display of the math operation waveform on or 
off. 
 
7.  Define the math operation waveform label 
Press Label to open the label submenu and the label modification interface. 
Please set the math operation waveform label by referring to “
To Set the 
Channel Label”.  
 
Note: The user-defined label can include uppercase English letters (from A to Z), 
lowercase English letters (from a to z), numbers (from 0 to 9), underline and 
space; the length of the label cannot exceed 4 characters. 
 
 
To Edit and Apply the Operation Expression 
 
The operation expression editing window is as shown in the figure below. The 
following section provides introductions of the contents in the window. 
 
Figure 6-2 Operation Expression Editing Window 
 
  Expression 
Here, expression refers to the advanced operation formula formed by one or 
more of channel items, function items, variables, operators and figures. The 
length of the expression is limited to 64 bytes.  
 
  Channel 
You can select CH1, CH2, CH3 or CH4. 
 
 
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