Teledyne LeCroy WaveExpert 100H Operators Manual - Manual (Page 120)

Operator’s Manual
118
WE-OM-E Rev A
fwxx Full Width at xx% Maximum
Definition: Determines the width of the largest area peak, measured between bins on
either side of the highest bin in the peak that have a population of xx% of the
highest's population. If several peaks have an area equal to the maximum
population, the leftmost peak is used in the computation.
Description: First, the highest population peak is identified and the height of its highest bin
(population) determined (see the pks description). Next, the bin populations to
the right and left are found until a bin on each side is found to have a
population of less than xx% of that of the highest bin. A line is calculated on
each side, from the center point of the first bin below the 50% population to
that of the adjacent bin, towards the highest bin. The intersection points of
these lines with the xx% height value is then determined. The length of a line
connecting the intersection points is the value for fwxx.
Example: fwxx with threshold set to 35%: