Keithley 2601B Reference Manual page 649

Series 2600B System SourceMeter® Instrument Reference Manual
Usage
questionableRegister = status.questionable.instrument.smuX.condition
questionableRegister = status.questionable.instrument.smuX.enable
questionableRegister = status.questionable.instrument.smuX.event
questionableRegister = status.questionable.instrument.smuX.ntr
questionableRegister = status.questionable.instrument.smuX.ptr
status.questionable.instrument.smuX.enable = questionableRegister
status.questionable.instrument.smuX.ntr = questionableRegister
status.questionable.instrument.smuX.ptr = questionableRegister
questionableRegister
X
Details
These attributes are used to read or write to the questionable status instrument SMU X summary registers.
Reading a status register returns a value. The binary equivalent of the returned value indicates which register
bits are set. The least significant bit of the binary number is bit B0, and the most significant bit is bit B15. For
example, if a value of 7.68000e+02 (which is 768) is read as the value of the condition register, the binary
equivalent is 0000 0011 0000 0000. This value indicates that bit B8 and bit B9 are set.
B15 B14
** >
0 0
* Least significant bit
** Most significant bit
For information about .condition, .enable, .event, .ntr, and .ptr registers, refer to
page E-1) and
the following table.
Bit
B0-B7
B8
B9
B10-B11
B12
B13-B15
2600BS-901-01 Rev. B / May 2013
The status of the questionable status SMU X summary register; a zero (0)
indicates no bits set (also send 0 to clear all bits); other values indicate various
bit settings
Source-measure unit (SMU) channel (for example
status.questionable.instrument.smua.enable applies to SMU
channel A)
B13 B12 B11 B10
> > > >
0 0 0 0
Enable and transition registers
Value
Not used
status.questionable.instrument.smuX.CALIBRATION
status.questionable.instrument.smuX.CAL
status.questionable.instrument.smuX.UNSTABLE_OUTPUT
status.questionable.instrument.smuX.UO
Not used
status.questionable.instrument.smuX.OVER_TEMPERATURE
status.questionable.instrument.smuX.OTEMP
Not used
B9 B8 B7 B6 B5
> > > >
1 1 0 0
(on page E-19). The individual bits of this register are defined in
Section 7: TSP command reference
B4 B3 B2 B1
> > > > >
0 0 0 0 0
Status register set contents
Description
Not applicable.
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
Set bit indicates that an
unstable output condition
was detected.
Bit B9 decimal value: 512
Not applicable
Set bit indicates that an
over temperature condition
was detected.
Bit B12 decimal value:
4,096
Not applicable.
B0
*
0
(on
7-309