Status Report Structure; Service Requests (Srq) - Iwatsu VOAC760 Manual

3.3 Status report structure

3.3.1

Service requests (SRQ)

If an operation is completed or an error occurs, this instrument outputs a service request using a
GPIB interface (i.e., it sets the SRQ line to "L").
While only one SRQ line, which is wired-OR connection, is used on the bus line for the service
request, this instrument has multiple service request events. To identify the cause of the service
request, the controller must execute a serial poll or read the internal status register of this instrument.
When using an interface other than GPIB, the service request or serial polling cannot be used.
Therefore, it is necessary to make a program that the controller reads the status register inside the
instrument when necessary.
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