Gentec-EO T-Rad (DB-15) - Manual (Page 26)

T-RAD-DB15--USB Instruction Manual Version 2.1 December. 2012 26
1.9.5 Max
The maximum value of the current data set. Resets with the Reset</B> button or an auto
reset when in Fixed Sample Collection mode. Updates on each sample.
1.9.6 Mean
The Mean of the current data set. Active in Fixed Sample Collection mode. Updates when the
Batch Size is met. Resets with the Reset button or an Auto Reset when the Batch Size is met.
1.9.7 Standard Deviation
The standard deviation of the data set. This can be interpreted as the RMS noise.
Standard Deviation and Variance Details:
The VI calculates the output values using the following equations.
n - 1
µ = SUM [ Xi / n ]
i = 0
where N is mean and n is the number of elements in X.
standard deviation = Q^2
n - 1
Q^2 = SUM [ ( Xi - N)^2 /( n - 1) ]
i = 0
where Q is variance, N is mean.
1.9.8 Filter Bandwidth
The filter bandwidth that results from the selected filter Tau.
1.9.9 Data File
The path of the currently open data file. If the indicator is empty, no file is currently open to log
data.