Quantum Data 802BT - Manual (Page 220)

210 Appendix A Command Reference
*OPC
OPeration Complete
Class GPIB
Description Causes the 882 to set the OPC bit in the Event Status register when all operations have
been completed. Since there are no overlapping commands, the *OPC command will set
the OPC bit immediately when executed.
The *OPC query will put a 1 in the output buffer when all operations are complete.
Command syntax *OPC
Query syntax *OPC?
Returns NL