14: TSP command reference 2470 High Voltage SourceMeter Instrument
14-140 2470-901-01 Rev. A / May 2019
smu.measure.offsetcompensation
This attribute determines if offset compensation is used.
Type TSP-Link accessible Affected by Where saved Default value
Attribute (RW) Yes Restore configuration
Instrument reset
Power cycle
Measure configuration list
Configuration script
Measure configuration list
smu.OFF
Usage
state = smu.measure.offsetcompensation
smu.measure.offsetcompensation = state
Disable offset compensation: smu.OFF
Enable offset compensation: smu.ON
Details
The voltage offsets caused by the presence of thermoelectric EMFs (V
EMF
) can adversely affect
resistance measurement accuracy. To overcome these offset voltages, you can use
offset-compensated ohms.
This feature is only available for resistance measurements or when the smu.measure.unit is set to
smu.UNIT_OHM.
Example
smu.measure.func = smu.FUNC_RESISTANCE
smu.measure.sense = smu.SENSE_4WIRE
smu.measure.offsetcompensation = smu.ON
smu.source.output = smu.ON
print(smu.measure.read())
smu.source.output = smu.OFF
Sets the measurement function to
resistance. Set the instrument for 4-wire
measurements and turn offset compensation
on. Turn on the source, make a
measurement, and turn the source off.
Example output:
Also see
None
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