Teledyne LeCroy WaveExpert 100H Operators Manual - Manual (Page 136)

Operator’s Manual
134
WE-OM-E Rev A
Histogram Parameters
Once a histogram is defined and generated, measurements can be performed on the histogram
itself. Typical of these are the histogram's:
y average value, standard deviation.
y most common value (parameter value of highest count bin).
y leftmost bin position (representing the lowest measured waveform parameter value).
y rightmost bin (representing the highest measured waveform parameter value).
Histogram parameters are provided to enable these measurements. Available through selecting
"Statistics" from the "Category" menu, they are calculated for the selected section between the
parameter cursors:
fwhm full width (of largest peak) at half the maximum bin.
fwxx full width (of largest peak) at xx% the maximum bin.
hist ampl histogram amplitude between two largest peaks.
hist base histogram base or leftmost of two largest peaks.
hist max value of the highest (right-most) populated bin in a histogram.
hist mean average or mean value of data in the histogram.
hist median value of the x-axis of a histogram that divides the population into two equal halves.
hist min value of the lowest (left-most) populated bin in a histogram.
hist rms rms value of data in histogram.
hist sdev standard deviation of values in a histogram.
hist top histogram top or rightmost of two largest peaks.
max populate population of most populated bin in histogram.
mode data value of most populated bin in histogram.
percentile data value in histogram for which specified `x'% of population is smaller.
peaks number of peaks in histogram.
pop @ x population of bin for specified horizontal coordinate.
range difference between highest and lowest data values.
total pop total population in histogram.
x at peak x-axis position of specified largest peak.