RIGOL DG4000 Series - Manual (Page 189)

Chapter 10 Utility and System Settings RIGOL
DG4000 Series User’s Guide 10-17
To Set USB Device Type
The USB Device interface at DG4000 rear panel could be connected with PC or
PictBridge printer to control the instrument remotely or to print the contents
displayed on the screen.
Press Utility 
I/O Setup  USB Dev:
 Select “PC”: users can use PC software to edit arbitrary waveform and
download it to the internal memory of the generator. Users can also use the
SCPI commands to control the generator.
 Select “Printer”: press Utility  Print Dest to select “Printer”. Users can
press Print to print the contents currently displayed in the interface.