Keithley 2450 User Manual

Model 2450
Interactive SourceMeter® Instrument Reference Manual Section 8:
TSP command reference
2450-901-01 Rev. B/September 2013 8-117
smu.measure.offsetcompensation
This command enables or disables offset compensation for resistance measurements.
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
Enable offset compensation: smu.ON
Disable offset compensation: smu.OFF
Details
The voltage offsets because of the presence of thermal 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.
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. An
example output is:
81592000
Also see
None
smu.measure.range
This attribute contains the positive full-scale value of the measurement range for the selected measurement
function.
Type TSP-Link accessible Affected by Where saved Default value
Attribute (RW) Yes
Restore configuration
Instrument reset
Power cycle
Measure configuration list
Function change
Configuration script
Measure configuration list
Current: 1e-06
Resistance: 200000
Voltage: 20
Usage
rangeValue = smu.measure.range
smu.measure.range = rangeValue
rangeValue
Set to the maximum expected value to be measured

Keithley 2450 Specifications

General

Brand	Keithley
Model	2450
Category	Test Equipment
Language	English