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Status and Events
Programming
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Device Event Status Enable Register
(DESER)
Standard Event Status Register
(SESR)
Event Status Enable Register
(ESER)
Status Byte Register
(SBR)
Service Request Enable Register
(SRER)
Event
Queue
Output
Queue
Event
Event
Event
Byte
Byte
Byte
1
2
3
4
6
7
5
PON URQ CME EXE DDE QYE RQC OPC
76543210
PON URQ CME EXE DDE QYE RQC OPC
76543210
PON URQ CME EXE DDE QYE RQC OPC
76543210
—
RQS
ESB MAV ————
MSS
7
6
543210
6
——ESB MAV ————
76543210
Figure 3-11: Status and Event Handling Process
Whenever a command is issued that results in a conflict, an event is gener-
ated on the EXE bit (bit 4).
You can avoid generating this event if you concatenate commands so that
the conflict is resolved when the command is completed. For example, when
setting the attenuator in DBR mode, always make sure that the REF com-
mand precedes the ATT:DBR command or an execution warning may result.
Conflicts