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IEEE 488.2 and Specific Command Reference
IEEE 488.2 Required Commands
Description
Syntax
Parameter(s)
Response Syntax
Response(s)
Example(s)
See Also
388
The *OPC? query makes possible the
synchronization between the instrument and an
external controller by reading the Output Queue
or by waiting for a service request on the
Message Available (MAV) bit in the Status Byte
Register. The *OPC? query causes the instrument
to place an ASCII character, 1, into its Output
Queue when the device completes all pending
operations. A consequence of this action is that
the MAV bit in the Status Byte Register is set to
state 1.
*OPC?
None
<Acknowledge>
Acknowledge:
The response data syntax for <Acknowledge> is
defined as a <NR1 NUMERIC RESPONSE DATA>
element.
The <Acknowledge> response is a single
ASCII-encoded byte corresponding to 1.
The receipt of an <Acknowledge> response
indicates that all pending selected device
operations have been completed.
*OPC? returns 1
*OPC
*WAI
*OPC?
FTB-500
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