ppendix D: Common commands Model 2657A High Power System SourceMeter® Instrument Reference Manual
D-4 2657A-901-01 Rev. B/December 2012
Operation complete and query: *OPC and *OPC?
Wait for pending overlapped commands to complete.
*OPC
Operation complete command that sets the OPC bit
*OPC?
Operation complete query that places a "1" in the output queue
When *OPC is sent, the OPC bit in the Standard Event Register (see Status model (on page E-1)) is
set when all overlapped commands complete. The *OPC? command places an ASCII "1" in the
output queue when all previous overlapped commands complete.
Reset: *RST
Returns the instrument to default conditions.
*RST
Command that returns the instrument to default conditions
When the *RST command is sent, the instrument returns to the default conditions. This performs the
same actions as reset()
(on page 7-155).
Self-test query: *TST?
Requests self-test results.
*TST?
Places a zero (0) in the output queue
This command always places a zero (0) in the output queue. This command is included for common
command compatibility only; the Model 2657A does not actually perform a self-test.
Trigger: *TRG
Generates a command interface trigger event for the trigger model.
*TRG
This command generates the trigger.EVENT_ID trigger event for the trigger model
The trigger.EVENT_ID is a constant that contains the command interface trigger event number.
You can set the stimulus of any trigger object to the value of this constant to have the trigger object
respond to the trigger events generated by this command. See trigger.EVENT_ID
(on page 7-336)
and Using the remote trigger model
(on page 3-33).
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