8: TSP command reference Model 2450 Interactive SourceMeter® Instrument
8-114 2450-901-01 Rev. B/September 2013
smu.measure.math.mxb.mfactor
This attribute specifies the scale factor for the y = mx + b math operation.
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
1
Usage
value = smu.measure.math.mxb.mfactor
smu.measure.math.mxb.mfactor = value
The scale factor; the valid range is
−
+
Details
This command sets the scale factor (m) for an mx + b operation for the selected measurement function.
The mx+b math operation lets you manipulate normal display readings (x) mathematically according to the
following calculation:
y = mx + b
Where:
• y is the displayed result
• m is a user-defined constant for the scale factor
• x is the measurement reading (if you are using a relative offset, this is the measurement with relative
offset applied)
• b is the user-defined constant for the offset factor
Example
smu.measure.func = smu.FUNC_DC_VOLTAGE
smu.measure.math.format = smu.MATH_MXB
smu.measure.math.mxb.mfactor = 0.80
smu.measure.math.mxb.bfactor = 50
smu.measure.math.enable = smu.ON
Set the measurement function to voltage.
Set the scale factor for the mx +b operation
to 0.80.
Set the offset factor to 50.
Enable the math function.
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)
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