EXFO IQS-600 Integrated Qualification System - Manual (Page 304)

IEEE 488.2 and Specific Commands
296 IQS-600
IEEE 488.2 Required Commands
*OPC?
Description The *OPC? query allows synchronization
between the instrument and an external
controller unit 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.
Syntax *OPC?
Parameter(s) None
Response Syntax
Response(s) Acknowledge:
The response data syntax for is
defined as a
element.
The response is a single
ASCII-encoded byte corresponding to 1.
The receipt of an response
indicates that all pending selected device
operations have been completed.
Example(s) *OPC? Return 1
See Also *OPC
*WAI