LeCroy WaveRunner Xi series Operator's Manual page 93

hist rms Histogram Root Mean Square
Definition:
The rms value of the values in a his
Description:
The center value of each populated bin is squared and multiplied by the
the bin. All results are summed and the total is divided by the population of all the bins. The
square root of the result is returned as hrms.
Example:
Using the histogram shown here, the value for hrms is:
hrms =
hist top Histogram Top
Definition:
The value of the rightmost of the two most populated peaks in a histogram. This parameter is
useful for waveforms with two primary parameter values, such as TTL voltages, where htop
would indicate the binary `1' voltage value.
Description:
The two highest histogram peaks are determined. The rightmost of the two identified peaks is
then selected. The center of that peak is htop (center is the horizontal point where the population
to the left is equal to the
Example:
WRXi-OM-E Rev C
togram.
= 2.87
area to the right).
O ' M
PERATOR S ANUAL
population (height) of
93