Keithley 2450

Section
8: TSP command reference Model 2450 Interactive SourceMeter® Instrument
Reference Manual
8-112 2450-901-01 Rev. B/September 2013
smu.measure.math.format
This attribute specifies which math operation is performed on measurements.
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
smu.MATH_PERCENT
Usage
operation = smu.math.format
smu.math.format = operation
operation
Math operation to be performed on measurements:
• y = mx+b: smu.MATH_MXB
• Percent: smu.MATH_PERCENT
• Reciprocal:
smu.MATH_RECIPROCAL
Details
This specifies which math operation is performed on measurements for the selected measurement function.
You can choose one of the following math operations:
• y = mx+b: Manipulate normal display readings by adjusting the m and b factors.
• Percent: Specify a constant that is applied to the measurement and display measurements as
percentages.
• Reciprocal: The reciprocal math operation displays measurement values as reciprocals. The displayed
value is 1/X, where X is the measurement value (if relative offset is being used, this is the measured
value with relative offset applied).
Math calculations are applied to the input signal after relative offset and before limit tests.
Example
smu.measure.func = smu.FUNC_DC_VOLTAGE
smu.measure.math.format = smu.MATH_RECIPROCAL
smu.measure.math.enable = smu.ON
Enables the reciprocal math operation on
voltage measurements.
Also see
Calculations that you can apply to measurements (on page 3-6)
smu.measure.math.enable (on page 8-111)
smu.measure.math.mxb.bfactor (on page 8-113)
smu.measure.math.mxb.mfactor (on page 8-114)
smu.measure.math.percent (on page 8-115)