Keithley 2606B System SourceMeter, Reference Manual

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2606B System SourceMeter® Instrument Reference Manual Section 7: TSP command reference
2606B-901-01 Rev. B / May 2018 7-311
Bit Value Description
B0-B7
Not used Not applicable.
B8
status.questionable.instrument.smuX.CALIBRATION
status.questionable.instrument.smuX.CAL
Set bit indicates that the
calibration constants
stored in nonvolatile
memory were corrupted
and could not be loaded
when the instrument
powered up.
Bit B8 decimal value: 256
B9
status.questionable.instrument.smuX.UNSTABLE_OUTPUT
status.questionable.instrument.smuX.UO
Set bit indicates that an
unstable output condition
was detected.
Bit B9 decimal value: 512
B10-B11
Not used Not applicable
B12
status.questionable.instrument.smuX.OVER_TEMPERATURE
status.questionable.instrument.smuX.OTEMP
Set bit indicates that an
over temperature
condition was detected.
Bit B12 decimal value:
4,096
B13-B15
Not used Not applicable.
As an example, to set bit B8 of the questionable status SMU A summary enable register, set
status.questionable.instrument.smua.enable =
status.questionable.instrument.smua.CAL
.
In addition to the above constants,
questionableRegister
can be set to the numeric equivalent of
the bit to set. To set more than one bit of the register, set
questionableRegister
to the sum of
their decimal weights. For example, to set bits B8 and B9, set
questionableRegister
to 768
(which is the sum of 256 + 512).
Bit B7 B6 B5 B4 B3 B2 B1 B0
Binary value
0/1 0/1 0/1 0/1 0/1 0/1 0/1 0/1
Decimal
128 64 32 16 8 4 2 1
Weights
(2
7
) (2
6
) (2
5
) (2
4
) (2
3
) (2
2
) (2
1
) (2
0
)
Bit B15 B14 B13 B12 B11 B10 B9 B8
Binary value
0/1 0/1 0/1 0/1 0/1 0/1 0/1 0/1
Decimal
32,768 16,384 8,192 4,096 2,048 1,024 512 256
Weights
(2
15
) (2
14
) (2
13
) (2
12
) (2
11
) (2
10
) (2
9
) (2
8
)
Example
questionableRegister = status.questionable.instrument.smua.CAL +
status.questionable.instrument.smua.UO
status.questionable.instrument.smua.enable = questionableRegister
Uses constants to set bit B8 and bit B9 of the questionable status SMU A summary enable register.
Also see
Questionable Status Registers (on page E-11)
status.operation.* (on page 7-266)