RIGOL DP832 - Manual (Page 120)

RIGOL Chapter 2 Front Panel Operations
2-70 DP800 User’s Guide
The first line: instrument serial number (press Utility  Sys Info to
acquire the serial number of the instrument);
The second line: the option license;
The third line: a blank line (cannot be omitted).
Note: The hyphens are not included in the option license.
The option installation procedures:
 Edit the option installation file according to the above requirements
and store it into a USB storage device.
 Turn on the instrument and insert the USB storage device. Press Store
to enter the store and recall interface.
 Read the option installation file following the steps below in the store
and recall interface (refer to "Store and Recall").
Select "D:"  set the file type to "All File"  select the installation file
mentioned above  press Read.
3) Send SCPI command
Open the remote control window and send the option installation command
(:LIC:SET <license>) by referring to "Remote Control".
Wherein, <license> is the option license (note that the hyphens should be
omitted).
For example, :LIC:SET UVF2L3N3XXKYTB73PPRSA4XDMSRT.
If the option is successfully installed, the prompt message informing you that
the option installation succeeds will be displayed; otherwise, the corresponding
error message will be displayed.