Appendix D: Status model
Model 2281S-20-6 DC Power Supply and Battery Simulator Reference Manual
D-16
077114601 / March 2019
Questionable Instrument Summary Event Register
The bits of Questionable Instrument Summary Event Register are described in the following figure
and table.
Figure 166: 2281S Questionable Instrument Summary Event Register
Bit
Decimal
value
Bit name
When set, indicates the following has occurred:
0
1
CC
The output is in constant current mode.
1
2
CV
The output is in constant voltage mode.
2
4
OCP
The overcurrent protection circuit has tripped.
3
8
OVP
The overvoltage protection circuit has tripped.
4
16
OTP
The overtemperature protection circuit has tripped.
5
32
SLV
Sense leads are reversed.
6
64
OUTP
Output is enabled.
7 through 15 Not used Not used
NA