Specifications

Appendix C 581

GPIB Command List By Function

C. GPIB Command List

By Function

Keyboard and

Mouse

Enables/Disables front panel and keyboard operations. SYST:KLOC:KBD on page 522

SYST:KLOC on page 522

Enables/Disables mouse operations. SYST:KLOC:MOUS on page 523

Powers off E4991A SYST:POFF on page 523

Product

information

Reads manufacturer, model number, serial number, and firmware version. *IDN? on page 281

Reads option number. *OPT? on page 282

Reads SCPI version. SYST:VERS? on page 524

Error message Reads number of errors. SYST:ERR:COUN? on page 518

Reads error queue. SYST:ERR? on page 517

Others Command Waits for execution. *WAI on page 284

Returns 1 when completed. *OPC? on page 281

Sets OPC bit when operation completes. *OPC on page 281

Confirms whether external reference signal is inputted. SYST:EXTR? on page 518

Performs self-test and returns result. *TST? on page 284

Function Item to be set or executed GPIB command