RIGOL M300 - Manual (Page 85)

Chapter 3 Commands Compatibility RIGOL
Programming Guide for DM3000 3-19
COMPCLR
Exit the compare (COMP) mode and restore the multimeter to
normal working.
COMPHI <high value> Set the high value (HI) of the compare (COMP) mode.
COMPLO <low value> Set the low value (LO) of the compare (COMP) mode.
TRIGGER <type>
Set the trigger type. <type> can be 1, 2, 3, 4, or 5. Limited by its
working principle, DM3000 only supports 1; when type is set to the
other values, error will occur.
TRIGGER?
Query the trigger type. Limited by the working principle of the
instrument, the query can only return 1.
SERIAL? Query the instrument serial number.