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Model 2461 Interactive SourceMeter® Instrument Reference Manual
Section 8: TSP command reference
2461-901-01 A/November 2015
8-165
smu.measure.offsetcompensation
This attribute enables or disables offset compensation.
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
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:
81592000
Also see
None