Keithley 2600a series User Manual

19-192 Return to Section Topics 2600AS-901-01 Rev. B / September 2008
Section 19: Remote Commands Series 2600A System SourceMeter® Instruments Reference Manual
status.questionable.instrument.smuX.condition
status.questionable.instrument.smuX.enable
status.questionable.instrument.smuX.event
status.questionable.instrument.smuX.ntr
status.questionable.instrument.smuX.ptr
smuX = smua or smub
Attribute Questionable status SMU X summary register set.
Default 0
TSP-Link
accessibility
This attribute can be accessed from a remote TSP-Link node.
Usage Reads condition, enable, event, NTR, and PTR registers:
quesreg = status.questionable.instrument.smuX.condition
quesreg = status.questionable.instrument.smuX.enable
quesreg = status.questionable.instrument.smuX.event
quesreg = status.questionable.instrument.smuX.ntr
quesreg = status.questionable.instrument.smuX.ptr
Writes to enable, NTR, and PTR registers:
status.questionable.instrument.smuX.enable = quesreg
status.questionable.instrument.smuX.ntr = quesreg
status.questionable.instrument.smuX.ptr = quesreg
Set quesreg to one of the following values:
0 Clears all bits.
status.questionable.instrument.smuX.CALIBRATING Sets CAL bit (B8).
status.questionable.instrument.smuX.CAL Sets CAL bit (B8).
status.questionable.instrument.smuX.UNSTABLE_OUTPUT Sets UO bit (B9).
status.questionable.instrument.smuX.UO Sets UO bit (B9)
status.questionable.instrument.smuX.OVER_TEMPERATURE Sets OTEMP bit (B12).
status.questionable.instrument.smuX.OTEMP Sets OTEMP bit (B12).
quesreg can also be set to the decimal weight of the bit to be set. Examples:
To set bit B8 (CAL), set quesreg to 256 (2
8
).
To set bit B9 (UO), set quesreg to 512 (2
9
).
To set bit B12 (OTEMP), set quesreg to 4096 (2
12
).
To set more than one bit of the register, set quesreg to the sum of the decimal weights.
To set bits B8 and B12, set quesreg to 4362 (256 + 4096).
Remarks • These attributes are used to read or write to the questionable status 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 0, and the most
significant bit is bit 15.
• For example, assume value 4362 is returned for the enable register. The binary equivalent is
0001000100000000. This value indicates that bit B8 (CAL bit) and bit B12 (OTEMP bit) are set.
• The used bits of the questionable status SMU X summary registers are described as follows:
• Bit B8, CAL: Set bit indicates that calibration is questionable.
• Bit B9, UO: Set bit indicates that an unstable output condition was detected.
• Bit B12, OTEMP: Set bit indicates that an over temperature condition was detected.
Details See Operation Event Registers in Appendix C.
Example Sets the OTEMP bit of the questionable status SMU A summary enable register:
status.questionable.instrument.smua.enable =
status.questionable.instrument.smua.OTEMP

Keithley 2600a series Specifications

General

Brand	Keithley
Model	2600a series
Category	Measuring Instruments
Language	English