Statistics - HBM SomatXR CX23-R User Manual

4 Setting up and running a test
Example: Angular Position
Consider mapping an input channel that generates angular position in the range of 0 to 360 degrees to an output channel
that specifies which 60-degree sector the input channel is in. Use the following mapping conditions where x is the input
and y is the output.
Enter the values as shown below for the grid and text editor interfaces:
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4.4.16 Statistics
The Statistics channel generates statistical output data from source transducer or
computed channel input data.
NOTE
Measurand and Units are inherited from the selected input channel. Description
and Range values are initialized on selection of the input channel.
Statistic: Select the desired statistical mode from the set of options provided. The
statistical math equations are listed below.
Percentile: For the X th percentile mode, specify the X value as an integer
between 0 and 100. The output is the value at the X th percentile of the sample
window. If necessary, an output value is interpolated between the input values
that border the exact X th percentile. Note that an X value of 0 returns the minimum
input value and an X value of 100 returns the maximum input value.
Window samples: Specify the number of input samples used to generate one
output sample. This sets the size of the analysis window and also the associated
output sample rate (i.e., the output sample rate is the input sample rate divided by
this parameter). This can be any positive integer greater than one. The first output
sample will have a time stamp of 0 in regard to elapsed run time. Because of this,
the output data samples will appear to lead the input channel data samples when
both are plotted against elapsed run time. A Time base shifter computed channel
defined with a Lag of 1 sample can be used to change this if desired.
Statistical math equations
Following are the equations used to compute the statistical values where n is the
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