Chapter 6 Operations and Measurements    RIGOL 
MSO4000/DS4000 User’s Guide  6-17 
  Operator 
The function of each operator is as shown in the table below.  
 
Table 6-4 Operator 
+ - * /  Arithmetic operators: add, subtract, multiply and divide 
(  ) 
Parentheses, used to increase the priority of the operation 
enclosed in the parentheses 
<  >  <= 
>=  == != 
Relationship operators: lower than, greater than, lower 
than or equal to, greater than or equal to, equal to, not 
equal to  
!( || &&  Logic operator: NOT, OR, AND 
Note: In division operation, when the divisor is 0, the result of the division is 
treated as 0.  
  Figure 
You can select figures 0 to 9, decimal point and character E. Wherein, character 
E represents the nth power of 10. For example, 1.5E3 means 1.5×10
3
. 
 
You can edit and apply the operation expression following the steps below.  
1.  Open the operation expression editing window 
Press MATH  Operate and select “Advance”; press Expression and select 
“ON”; the expression editing window as shown in Figure 6-2 is displayed.  
2.  Edit the operation expression 
In the expression editing window, turn the multi-function knob 
 to select the 
desired item in “Channel”, “Function”, “Variable”, “Operator” and “Figure” (in the 
current state, items available are displayed in white; items grayed out cannot be 
selected); then, press down the knob and the item currently selected will be 
displayed in the “Expression” box (this item will be displayed at the current 
cursor position).  
During the expression editing, you can press Delete to delete the item currently 
at the left of the cursor or press Clear to delete all the items in the “Expression” 
box. 
3.  Apply the operation expression currently edited 
After finishing the expression editing, press Apply to apply the operation 
expression currently edited and exit the expression editing window 
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