Quantum Data 881 User Manual page 562

*OPC
Class
Description
Command syntax
Query syntax
Returns
Appendix A Command Reference
534
OPeration Complete
GPIB
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.
*OPC
*OPC?
NL