LeCroy WaveRunner Xi series Operator's Manual page 91

hist ampl Histogram Amplitude
Definit ion:
The difference in value of the t
for waveforms with two primary parameter values, such as TTL voltages, where hampl would
indicate the difference between the binary `1' and `0' voltage values.
Description:
The values at the center (line dividing the population of peak in half) of the two highest peaks ar
determined (see pks parameter description:). The value of the leftmost of the two peaks is the
histogram base (see hbase). While that of the rightmost is the histogram top (see htop). The
parameter is then calculated as:
hampl = htop hbase
Example:
In this histogram, hampl is 152 mV 150 mV = 2 mV.
hbase Histogram Base
Definition:
The value of the leftmost of the two most populated peaks in a histogram. This parameter is
primarily useful for waveforms with two primary parameter values such as TTL voltages where
hbase would indicate the binary `0' voltage value.
Description:
The two highest histogram peaks are determined. If several peaks are of equal height the
leftmost peak among these is used (see pks). Then the leftmost of the two identified peaks is
selected. This peak's center value (the line that divides the population of the peak in half) is the
hbase.
Example:
WRXi-OM-E Rev C
wo most populated peaks in a histogram. This parameter is useful
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