LeCroy DDA 7 Zi series, Руководство оператора

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Operator's Manual
WP700Zi-OM-E-RevA
124
pks Peaks
T2 = mean + 2 * sigma, and where sigma is the standard deviation of all populated
bins under T1.
3. Once T2 is defined, the histogram distribution is scanned from left to right. Any bin that
crosses above T2 signifies the existence of a peak. Scanning continues to the right until one
bin or more crosses below T2. However, if the bins cross below T2 for less than a
hundredth of the histogram range, they are ignored, and scanning continues in search of
peaks that cross under T2 for more than a hundredth of the histogram range. Scanning
goes on over the remainder of the range to identify additional peaks. Additional peaks within
a fiftieth of the range of the populated part of a bin from a previous peak are ignored.
NOTE: If the number of bins is set too high, a histogram may have many small gaps. This
increases sigma and, thereby, T2. In extreme cases, it can prevent determination of a peak, even
if one appears to be present to the eye.
Example :
Here the two peaks have been identified. The peak with the highest population is peak #1.
Range
range Range
Definition:
Computes the difference between the value of the rightmost and that of the leftmost populated bin.
Description:
The rightmost and leftmost populated bins are identified. The difference in value between the two
is returned as the range.