Appendix E: Status model Model 2651A High Power System SourceMeter® Instrument Reference Manual
E-22 2651A-901-01 Rev. A / March 2011
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 Status register sets
(on page E-2)
and the charts in this appendix.
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