*LRN?
Returns an ASCII string of all of the commands required to put the instrument into its current state.
Parameter Typical Return
(none) An ASCII string of SCPI commands, delimited with semicolons (";") between commands.
Return the learn string:
*LRN?
l Some parameters can be set with either [SENSe:]FREQuency or [SENSe:]PERiod versions of the same command.
The *LRN string will always return the FREQuency version of the command, even if the parameter was set via the
PERiod version. Similarly, parameters that can be set with RESistance or FRESistance versions of the same
command will always return the FRESistance version.
*OPC
Sets "Operation Complete" (bit 0) in the Standard Event register at the completion of the current operation.
Parameter Typical Return
(none) (none)
Configure 100 DC voltage measurements and enable the generation of an SRQ when the measurements complete:
*CLS
*ESE 1
*SRE 32
CONF:VOLT:DC
SAMP:COUN 100
INIT
*OPC
l Other commands may be executed before Operation Complete bit is set.
l The difference between *OPC and *OPC? is that *OPC? outputs "1" when the current operation completes.
*OPC?
Returns 1 to the output buffer after all pending commands complete. Other commands cannot be executed until this
command completes.
Parameter Typical Return
(none) 1
Configure 100 DC voltage measurements and return "1" when the measurements complete:
CONF:VOLT:DC
SAMP:COUN 100
INIT
*OPC?
l The purpose of this command is to synchronize your application with the instrument.
l The difference between *OPC and *OPC? is that *OPC? outputs "1" when the current operation completes.
Agilent Truevolt Series DMM Operating and Service Guide 157
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