Model 2601B-PULSE System SourceMeter Instrument Reference Manual Section 15: Status model
2601B-PULSE-901-01A April 2020 15-23
• Bit B13, Instrument Summary (INST): Set bit indicates that an enabled bit in the Operation
Status Instrument Summary Register is set.
• Bit B14, Program Running (PROG): Set bit indicates that a program is running.
For more information on the Operation Status Registers, refer to Status register set contents (on page
15-1) and the figures in this section.
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 Status register set contents (on
page 15-1) and the figures in this appendix.
Questionable Status Registers
As shown in the Operation event, I/O, and TSP-Link registers (on page 15-11) of the status model,
there are seven register sets associated with Questionable Status. Commands are summarized in the
Status byte and service request (SRQ) (on page 15-15) topic. Note that bits can also be set by using
numeric parameter values. For details, see Programming enable and transition registers (on
page 15-14).
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 Reading registers (on page 15-15). 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 Status register set contents
(on page 15-1) and the figures in this section.
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