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64 Language Dictionary
*OPC
Meaning and Type
Operation Complete Device Status
Description
This command causes the interface to set the OPC bit (bit 0) of the Standard Event Status register when the Agilent SAS has
completed all pending operations. (See *ESE for the bit configuration of the Standard Event Status register.) Pending
operations are complete when:
l All commands sent before *OPC have been executed. This includes overlapped commands. Most commands are
sequential and are completed before the next command is executed. Overlapped commands are executed in
parallel with other commands. Commands that affect output voltage, current or state, relays, and trigger actions are
overlapped with subsequent commands sent to the Agilent SAS.
l Any change in the output level caused by previous commands has been completed.
l All triggers are completed.
*OPC does not prevent processing of subsequent commands but Bit 0 will not be set until all pending operations are
completed.
Command Syntax *OPC
Parameters (None)
Query Syntax (None)
Related Commands *OPC? *ESE
*OPC?
Meaning and Type
Operation Complete Device Status
Description
This query causes the interface to place an ASCII "1" in the Output Queue when all pending operations are completed.
Pending operations are as defined for the *OPC command. Unlike *OPC, *OPC? prevents processing of all subsequent
commands. *OPC? is intended to be used at the end of a command line so that the application program can then monitor
the bus for data until it receives the "1" from the power module Output Queue.
Do not follow *OPC? with *TRG or GPIB bus triggers. Since triggers sent after *OPC? will not
execute, this will prevent the unit from accepting further commands. If this occurs, the only
programmable way to restore operation is by sending the Agilent SAS a GPIB DCL (Device Clear).
Query Syntax *OPC?
Returned Parameters <NR1> A 1is placed in the Output Queue when the operation is complete
Related Commands *OPC *TRIG *WAI
*OPT?
Meaning and Type
Option Identification Query
Description
This query identifies any installed options. Options are identified by a number. 0 indicates no options are installed.
Query Syntax *OPT?
Returned Parameters <AARD> (multiple options separated by commas)