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5820A
Operators Manual
Instrument Status
Change Enable
Registers
Write using
ISCE0 (1 to 0 transition)
ISCE1 (0 to 1 transition)
ISCE (1 to 0 AND 0 to 1)
Read using
ISCE0? (1 to 0 transition)
ISCE1? (0 to 1 transition)
ISCE? (1 to 0 OR 0 to 1)
Instrument Status
Change Registers
Write using
ISCE0? (1 to 0 transition)
ISCE1? (0 to 1 transition)
ISCE? (1 to 0 OR 0 to 1)
Instrument Status
Register
Read using ISR?
SRQSTR
on
RS-232 bus
5-38
15
14
13
12
&
&
&
&
15
14
13
12
15
14
13
12
7
6
5
4
3
2
&
&
&
&
&
&
7
6
5
4
3
2
Service Request
0
Generation
&
SRQ
on
IEEE bus
7
Figure 5-7. Status Register Overview
11
10
9
8 7 6 5 4 3 2 1 0
&
&
&
&
&
&
&
&
11
10
9
8 7 6 5 4 3 2 1 0
11
10
9
8 7 6 5 4 3 2 1 0
Event Status
1
0
Register
Read using *ESR?
&
&
Event Status
1
0
Enable Register
Read using *ESE?
Write using *ESE
RQS
6
0
0
ESB MAV
EAV ISCB
MSS
&
&
&
&
&
&
5
4
3
2
1
0
&
&
&
&
Data
Available?
Output Buffer
Error
Available?
Error Queue
Read using ERR?
Read by Serial Poll
Status Byte Register
Read using *STB?
Service Request
Enable Register
Read using *SRE?
Write using *SRE
oq032f.eps
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