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
(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
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,
(on page 7-344)). Also see Trigger model.
