Status Byte Register And Service Request Enable Register - Keysight 53147A Operating And Programming Manual

Status Byte Register and Service Request Enable Register

Operation Status
Figure 3-13
Status Byte Register
The Status Byte Register is the summary-level register in the status reporting
structure. It contains summary bits that monitor activity in the other status
registers and queues as shown in
register—its summary bits are set TRUE or FALSE (one or zero) by the presence or
absence of the condition which is being summarized.
The Status Byte Register can be read with either a serial poll or the *STB? query,
but it is altered only when the state of the overlying status data structures is
altered. The entire Status Byte Register can be cleared by sending just the *CLS
command to the instrument in a program message.
Table 3-8
Keysight 53147A/148A/149A Operating and Programming Guide
Error/Event
Queue
Questionable
Data
Status Register
Group
Status of
Output Queue
Standard Event
Status Register
Group
Register Group
Status Byte and Service Request Enable
lists the Status Byte Register bits and briefly describes each bit.
Status Byte
Register
0 &
1 &
EAV
QSB
MAV
ESB
RQS /MSS
OSB
Service
Request
Generation
Figure 3-13. The Status Byte Register is a live
Programming
Service Request
Enable Register
(Logical AND)
&
&
&
&
&
Logical OR
SRQ Interrupt
to Computer
3
0
1
2
3
4
5
7
175