*OPC
Signal When Operation Complete
Syntax:
'OPC
Parameters:
None
Function:
This command provides a means of synchronizing operations between the
2832€
and the host. This command sets the Operation Complete bit @it
0)
of
the Event Status register to
1
when all pending operations have completed.
This bit will remain
1
until cleared by the 'CIS command or the 'ESR? query.
This command can be used in conjunction with the 'ESE and 'SRE commands
to cause a Service Request on the GPlB bus when all pending operations are
complete. Once the
'OPC command is received, it will not set the operation
complete bit to
1
while any of the following operations are in progress:
Single acquisition in progress
Data store enabled with fixed data store buffer
The meter
is
ranging
Related Commands: 'ESE, 'ESE?, 'ESR?, 'OPC?, 'SRE, 'SRE?, 'STB?, 'WAI
OPC?
Operation Complete Query
Syntax:
'OPC?
Parameters:
None
Function:
This query provides a means of synchronizing operations between the
28324
and the host. This command generates a response when all pending opera-
tions have completed.
When all pending operations are complete, this query will cause the Message
Available bit @it
4) of the Status Byte to be set because
of
the response
generated. By enabling bit
4 of the Service Request Enable register
(see
'SRE),
the 'OPC? query can be used to cause a Service Request on the GPlB bus
when all pending operations are complete.
Once the
'OPC? query
is
received, the response will not be generated while
any of the following operations are in progress:
Single acquisition in progress
Data store enabled with fixed data store buffer
The meter is ranging
The 'CIS or
'RST
commands, as well as a GPIB interface device clear, wiIl
cancel the operation complete query.
Returns:
1
The response is generated when all pending operations are complete.
Related Commands: 'OPC, 'SRE, 'SRE?, 'STB?, 'WAI
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