Keithley 2651A Reference Manual page 780

Appendix E: Status model
Questionable Status Register
This register set feeds to bit B3 (QSB) of the Status Byte. The bits used in the Questionable Status
Register set are described as follows:
•
Bit B8, Calibration (CAL): Set bit indicates that calibration is questionable.
•
Bit B9, Unstable Output (UO): Set bit indicates that an unstable output condition was detected.
•
Bit B12, Over Temperature (OTEMP): Set bit indicates that an over temperature condition was
detected.
•
Bit B13, Instrument Summary (INST): Set bit indicates that a bit in the Questionable Instrument
Summary Register is set.
For more information on the Questionable Status Register, refer to
and the charts in this appendix.
E-22
Model 2651A High Power System SourceMeter® Instrument Reference Manual
Status register sets (on page E-2)
2651A-901-01 Rev. A / March 2011