Tektronix Keithley 2281 Series Reference Manual page 570

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