Chapter 14 System Function Setting    RIGOL 
MSO4000/DS4000 User’s Guide  14-21 
2)  At this point, the prompt message “License file detected, install?” is 
displayed. Press License to start installing the option and the installation 
progress is displayed. After the option is installed, the current option 
interface is displayed.  
 
Note: 
  A USB storage device can only store a single option license file of the same 
instrument; but can store the option license files of multiple different 
instruments.  
  During the option installation process, do not power off the instrument or 
pull out the USB storage device.  
 
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