Model 2657A High Power System SourceMeter® Instrument Reference Manual
Appendix E: Status model
2657A-901-01 Rev. B/December 2012
E-23
Questionable Status Registers
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 Status
Instrument Summary Register is set.
For more information on the Questionable Status Register, refer to
page E-1) and the figures in this appendix.
Questionable Status Registers
As shown in the status model's
Operation event, I/O, and TSP-Link registers
(on page E-12), there
are seven register sets associated with Questionable Status. Commands are summarized in the
Status byte and service request (SRQ)
(on page E-15) topic. Note that bits can also be set by using
numeric parameter values. For details, see
Programming enable and transition registers
For example, either of the following commands will set the CAL enable bit (B8):
status.questionable.enable = status.questionable.CAL
status.questionable.enable = 256
When reading a register, a numeric value is returned. The binary equivalent of this value indicates
which bits in the register are set. For details, see
(on page E-15). For example, the
following command will read the Questionable Status Enable Register:
print(status.questionable.enable)
For more information about the Questionable Status Registers, refer to
(on page E-1) and the figures in this appendix.
Summary of Contents for 2657A
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