Anritsu MS9710C - 8.3 Enabling the SRQ

Section 8 Status Structure
8-10
8.3 Enabling the SRQ
Enabling the SRQ allows a summary message in the STB register to be selected in
response to a service request. The service request enable (SRE) register shown
below can be used to select a summary message.
Bits of the service request enable register correspond to the bits of the status byte
register. When 1 is set in a status byte bit corresponding to a significant bit of the
service request enable register, the devices sets the RQS bit to 1 and issues a
service request to the controller. For example, when bit 4 of the service request
enable register is set (enabled) in advance, a service request can be issued to the
controller each time the MAV bit is set to 1 (if the output queue has data).
Logical OR
Service Request
Generation
Not used
ESB
MAV
ESB (ERROR)
ESB (END)
ESB (Not used)
Not used
7
5
4
3
2
1
0
7
5
4
3
2
1
0
&
&
&
&
&
&
&
Status Byte (STB) RegisterService Request Enable (SRE) Register
MSS 6 RQS
disabled=0, enabled=128 (2
7
)
Not used
disabled=0, enabled=32 (2
5
)
disabled=0, enabled=16 (2
4
)
disabled=0, enabled=8 (2
3
)
disabled=0, enabled=4 (2
2
)
disabled=0, enabled=2 (2
1
)
disabled=0, enabled=1 (2
0
)
Status summary message