Keithley 7001

24
&
&
&
&
&
Status Summary Messages
0 0
OR
* STB ?
Serial Poll
* SRE
* SRE ?
Status Byte Register Service Request Enable Register
MSS
RQS
(B6)
OSB
(B7)
ESB
(B5)
MAV
(B4)
QSB
(B3)
EAV
(B2)
(B15 - B8)
(B1) (B0)
(B6)
OSB
(B7)
ESB
(B5)
MAV
(B4)
QSB
(B3)
EAV
(B2)
(B15 - B8)
(B1) (B0)
OSB = Operation Summary Bit
MSS = Master Summary Status (IEEE-488.2) RQS = Request for Service (IEEE-488.1)
ESB = Event Summary Bit
MAV = Message Available
QSB = Questionable Summary Bit
EAV = Error Available
& = Logical AND
OR = Logical OR
Figure 3: Status byte and service request (SRQ)