User Manual
RIGOL  Chapter 2 Front Panel Operation 
User’s Guide for DSA800 Series 
2-74 
TOI 
Measurement Interface: 
Figure 2-21 TOI Measurement Interface 
Measurement Results: Base Lower, Base Upper, TOI (3rd Order Lower), TOI 
(3rd Order Upper), the frequency and amplitude of each kind of signal, the 
amplitude difference between each kind of signal and the base lower as well as the 
intercepts of the base lower and base upper. 
Wherein, the intercept of 3rd Order Lower = (Base Lower Power - 3rd Order Lower 
Power)/2 + Base Lower Power; the intercept of 3rd Order Upper = (Base Upper 
Power - 3rd Order Upper Power)/2 + Base Upper Power. 
Measurement Parameters: average number, average mode and span.  
1.  Avg Num 
Specify the number of averages used when calculating the measurement 
result and the default is “Off”. You can use the numeric keys, knob or direction 
keys to modify this parameter. 
3rd Order Lower  
3rd Order Upper  
Base Lower
Base Upper 










