Keithley 2200 series Reference Manual page 148

Series 2200 Programmable DC Power Supplies Reference Manual
Operation condition register (OCR)
The operation condition register is made up of eight bits, which note the occurrence of events as
shown here.
OCR bit functions
Bit
7 (MSB)
6
5
4
3
2
1
0 (LSB)
Operation event register (OEVR)
The operation event register has the same content as the operation condition register. See
condition register (OCR)
Questionable condition register (QCR)
The questionable condition register is made up of eight bits which note the occurrence of five types of
events as shown in the following figure.
2200S-901-01 Rev. C / March 2016
Figure 28: Operation Condition Register (OCR)
Function
———— This bit is not used.
———— This bit is not used.
RUN Running List. Indicates that the power supply is executing a lis
TBF Trace Buffer Full. This bit is used internally, by the instrument.
CC Constant Current. Indicates that the power supply is in constant current mode
and is regulating its output current.
CV Constant Voltage. Indicates that the power supply is in constant voltage mode
and is regulating its output voltage.
WTG Waiting for Trigger. Indicates that the power supply is waiting for a trigger
CAL Calibrating. Indicates that the power supply is calculating a new calibration
parameter.
(on page C-5) for information on the operation event register.
Figure 29: Questionable condition register (QCR)
Appendix C: Status model
Operation
C-5