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Instrument Status
14
15
Change Enable
Register
&
Read using ISCE?
&
Write using ISCE
Instrument Status
14
15
Change Register
Read using ISCR?
Instrument Status
14
15
Register
Read using ISR?
7
6
5
4
&
&
&
&
6
7
5
4
Service Request
Generation
SRQ on
IEEE-488 Bus
Figure 6-1. Overview of Status Data Structure
10
13
12
11
9
8
7
6
&
&
&
&
&
&
&
&
10
13
12
11
9
8
7
6
Bit Change from 0
1 or 1
10
13
12
11
9
8
7
6
Event Status
3
2
1
0
Register
Read using *ESR?
&
&
&
&
Event Status
2
3
1
0
Enable Register
Read using *ESE?
Write using *ESE
RQS
7
6
1
ESB MAV EAV ISCB
MSS
&
&
&
&
&
&
2
7
5
4
3
1
Remote Commands and Syntax
5
4
3
2
1 0
&
&
&
&
&
&
5
4
3
2
1
0
0
5
4
3
2
1
0
Data
Available?
Output Buffer
Fault
Available?
Read by Serial Poll
Status Byte Register
0
Read using *STB?
&
Event Request
0
Enable Register
Read using *SRE?
Write using *SRE?
Check the Calibrator Status
Fault Queue
hhp050.eps
6
6-51
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