7½ Digit Graphical Sampling Multimeter Reference Manual Section 8:
DMM7510-901-01 Rev. B / May 2015 8-105
dmm.digitize.math.mxb.bfactor
This attribute specifies the offset, b, for the y = mx + b operation.
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
0
Usage
offsetFactor = dmm.digitize.math.mxb.bfactor
dmm.digitize.math.mxb.bfactor = offsetFactor
The offset for the y = mx + b operation; the valid range is
−
+
Functions
dmm.FUNC_DIGITIZE_CURRENT
dmm.FUNC_DIGITIZE_VOLTAGE
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
dmm.digitize.func = dmm.FUNC_DIGITIZE_CURRENT
dmm.digitize.math.format = dmm.MATH_MXB
dmm.digitize.math.mxb.mfactor = 0.80
dmm.digitize.math.mxb.bfactor = 42
dmm.digitize.math.enable = dmm.ON
Set the measurement function to voltage.
Set the scale factor for the mx +b operation
to 0.80.
Set the offset factor to 42.
Enable the math function.
Also see
Calculations that you can apply to measurements (on page 3-7)
dmm.digitize.math.enable (on page 8-102)
dmm.digitize.math.format (on page 8-103)
dmm.digitize.math.mxb.mfactor (on page 8-106)
dmm.measure.math.mxb.bfactor (on page 8-169)
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