Model 2651A High Power System SourceMeter® Instrument Reference Manual Appendix D: Common commands
2651A-901-01 Rev. A / March 2011 D-3
Identification query: *IDN?
*IDN? Command that reads ID information. The identification string includes the manufacturer, model
number, serial number, and firmware revision levels and is sent in the following format:
Keithley Instruments Inc., Model 2651A, xxxxxxx, yyyyy
Where:
xxxxxxx is the serial number.
yyyyy is the firmware revision level.
Operation complete and query: *OPC and *OPC?
*OPC Operation complete command that sets the OPC bit.
*OPC? Operation complete query that places a "1" in output queue.
When *OPC is sent, the OPC bit in the Standard Event Register (see Status model
(on page E-1)) will
set when all overlapped commands complete. An ASCII "1" is also placed in the Output Queue to be
read by the *OPC? query when overlapped commands complete.
Reset: *RST
*RST This command returns the instrument to defaults.
When the *RST command is sent, the instrument returns to the default conditions (see reset()
(on
page 7-151)).
Self-test query: *TST?
*TST? This command always places a 0 in the Output Queue. It is included for common command
compatibility only; the Model 2651A does not actually perform a self-test.
Trigger: *TRG
*TRG: This command generates the trigger.EVENT_ID for the trigger models. The
trigger.EVENT_ID is applicable to all trigger stimulus commands (for example,
trigger.timer[N].stimulus
(on page 7-344)). Also see Trigger model.