Math and Measure
Operator
Definition
Ln
Peforms a natural log of a waveform. Values less than or equal to zero are set to underflow.
Log10
Performs a log base 10 of a waveform. Values less than or equal to zero are set to underflow.
MatLab math
Produces a waveform using a custom MatLab function.
Phistogram
Creates a persistence histogram based on the displayed pixels of a waveform falling within a
user defined vertical or horizontal box (slice).
Product
For every point in the waveform, the value of Source1 is multiplied by the value of Source 2.
Source1 and Source2 must have the same horizontal units and scale.
Ptrace mean
Plots the mean value of each sample point in a persistence map.
Ptrace range
Generates a waveform with a width derived from the population range of a persistence map.
Ptrace sigma
Generates a waveform with a width derived from the sigma (sum) of a persistence map.
Ratio
For every point in the waveform, the value of Source1 is divided by the value of Source2.
Source1 and Source2 must have the same horizontal units and scale.
Reciprocal
For every point in the waveform the inverse is calculated using the formula:
1 / (sample value)
Rescale
For every point in the waveform the sample value is multiplied by the specified multiplier and
then add to with the specified adder. See
Roof
Calculates the highest vertical values of a waveform at each horizontal value for a specified
number of sweeps.
Segment
Selects one segment from a source waveform to place in a sequence waveform. Used in
Sequence sampling mode.
Sinx/x
Performs 10-to-1 interpolation using a Sin(x)/x filter.
Sparse
“Thins,” or decimates, an incoming acquisition by dropping sample points at regular intervals.
Sparsing factor specifies the number of points to drop between retained samples (e.g., factor of
4 retains 1 then drops 4). Sparsing offset specifies the point at which to begin applying the
sparsing factor (e.g., offset of 3 begins count on the third sample (3), then drops the number of
samples specified by the sparsing factor (4).
Square
For every point in the waveform, the square of the sample value is calculated.
Square Root
For every point in the waveform, the square root of the sample value is calculated.
Sum
For every point in the waveform, the value of Source1 is added to the value of Source 2.
Source1 and Source2 must have the same horizontal units and scale and the same vertical
units.
Track
Generates a waveform composed of parameter measurements that is time synchronous with
the source waveform. The vertical units are those of the source parameter value and the hori-
zontal units are seconds. Parameter values are posted at the sampling rate.
Trend
Produces a waveform composed of a series of parameter measurements in the order the meas-
urements were taken. The vertical units are those of the source parameter, the horizontal unit is
measurement number. The trend contains a single value for each measurement.
Zoom
Produces a magnified trace of a selected portion of the input waveform. See
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