RIGOL MSO/DS2000A Series - Manual (Page 202)

RIGOL Chapter 9 Reference Waveform
9-4 MSO2000A/DS2000A User’s Guide
To Import from Internal or External Memory
Users can also import the reference waveform stored in the internal memory or
external USB storage device to the instrument.
Press Import to enter the file recall interface. Please refer to the relative
descriptions in “
Store and Recall” to import the reference waveform to the
instrument.