Gentec-EO MACH 5 - Manual (Page 28)

Mach 5 User’s Manual Revision 2.1 28
From the continuous period data, the true period can be found and used to count how
many pulses were missing in the discontinuities.
Min
The minimum pulse energy in the data set.
Max
The maximum pulse energy in the data set.
Mean
The mean pulse energy in the data set.
Spread
Spread is defined as:
(max - min) / (max + min)
Standard Deviation
The standard deviation of the pulse energy in 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 µ is mean and n is the number of elements in X.
standard deviation = Q^2
n - 1
Q^2 = SUM [ ( Xi - µ)^2 /( n - 1) ]
i = 0
where Q is variance, µ is mean.
The Histogram Display
Figure 5 shows the Histogram Display of the Applications Software.