Rigol, Inverter, models:

DG1000 Series	User Manual
DG1000Z Series	Performance Verification Manual
DG1022	User Manual
DG1022Z	User Manual
DG4000 Series	Service Manual
DG4062	User Manual
DG5000 Series	Quick Manual
DG5071	User Manual
DG800 Series	User Manual
DG811	User Manual
DG900 Series	Service Manual
DG952	Programming Manual
DSG3000B Series	Service Manual