RIGOL  Chapter 13 System Function Setting   
  DS2000E User’s Guide 
Self-calibration 
 
The self-calibration program can quickly make the oscilloscope reach the best 
working state to get the most precise measurement values. You can perform 
self-calibration at any time especially when the change of the environment 
temperature is up to or more than 5 ℃. Make sure that the oscilloscope has been 
warmed up or operated for more than 30 minutes before the self-calibration.  
 
Disconnect all the input channel connections, and then press Utility  Self-Cal to 
open the self-calibration menu and self-calibration interface.  
Press Start and the oscilloscope will start to execute the self-calibration program. 
Press Exit to give up the self-calibration operation at any time and return to the 
previous menu. 
Note: Most of the keys are disabled during the self-calibration.