Model 2450 Interactive SourceMeter® Instrument Reference Manual
Section 2: General operation
2450-901-01 Rev. B/September 2013
2-25
Measure Filter/Math menu
This menu contains settings that specify the way measurement information is returned.
Setting
Description
Filter State
Turn this setting on to enable filtering of measurements.
Filter Count
The setting sets the number of measurements that are averaged
when filtering is enabled. Select a value from 1 to 100.
Filter Type
Select the type of averaging filter that is used for the selected
measurement function when the measurement filter is enabled.
Select moving average filtering to continuously add measurements
to the stack on a first-in, first out basis, replacing the oldest
measurement in the stack with a new measurement. Select
repeating average filter to average a set of measurements and
then flush the data out of the stack before averaging a new set of
measurements.
Rel State
Use the relative offset feature to subtract a set value or a baseline
reading from measurement readings. When you enable relative
offset, all subsequent measurements are displayed as the
difference between the actual measured value and the relative
offset value.
Math State
When the Math State is set to on, any math operations specified for
the present measurement function are performed before
completing the measurement.
Math Function
When the Math State is set to on, you can specify which math
operation is performed on measurements. You can choose one of
the following math operations:
•
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).
Zero Percent
Reference
When the Math State is set to on and the Math Function is set to
Percent, this setting specifies the constant when the math
operation is set to percent; the range is
−
1e12 to
+
1e12.
Measure Config List menu
This menu allows you to select an existing measure configuration list, create a new list, load
configuration settings to and from the instrument (system), and view the settings of a point in a
configuration list. For more information about using configuration lists, see
page 3-33).
