Smu.measure.math.mxb.bfactor - Keithley 2450 Reference Manual

Model 2450 Interactive SourceMeter® Instrument Reference Manual

smu.measure.math.mxb.bfactor

This attribute specifies the offset for the y = mx + b operation.
Type TSP-Link accessible
Attribute (RW) Yes
Usage
value = smu.measure.math.mxb.bfactor
smu.measure.math.mxb.bfactor = value
value
Details
This attribute specifies the offset (b) for an mx + b operation.
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
Also see
Calculations that you can apply to measurements
smu.measure.math.enable
smu.measure.math.mxb.mfactor
2450-901-01 Rev. B/September 2013
Affected by
Restore configuration
Instrument reset
Power cycle
Measure configuration list
Function change
The offset for the y = mx + b operation; the valid range is −1e12 to +1e12
(on page 3-6)
(on page 8-111)
(on page 8-114)
Section 8: TSP command reference
Where saved
Configuration script
Measure configuration list
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.
Default value
0
8-113