Teledyne LeCroy AORM - Advanced Optical Recording Measurements - Manual (Page 79)

AORM Software Package
923133 Rev A ISSUED: June 2013
77
PTOP PIT TOP
Description
Pit Top provides a measurement of the best estimate of the top amplitude of a pit. The concept of the top
calculation is to automatically provide the same measurement which would be obtained from a persistence
plot. The top of each pit is determined through histogramming techniques described in detail under Base and
Top Calculation Details.
When ptop is configured as a custom parameter, all tops within the single nT or
range of nT are calculated. Histogramming or trending such a configuration would result in one value per pit in
the nT range contributing a value to the histogram or trend. The value displayed on the custom parameter
display line is the average of all such top calculations. ‘nT Table’ mode provides an average top measurement
for each n index.
Display Options
ORM parameter calculations can be displayed, histogrammed, and trended in a variety of ways.
DISPLAY TYPE VALUE DISPLAYED
Parameter Statistics Off
All values of the top for all pits within the selected ‘nT’ range for the last
acquisition.
Parameter Statistics On
Average, minimum, maximum, and sigma of the top for all pits within
the selected ‘nT’ range for all acquisitions since last C
LEAR S WEEPS
operation.
nT Table
List of values of the average top for each group of pits of common ‘nT’
width for the last acquisition.
Histogram Function
Histogram graph of the value of the top for all pits within the selected
‘nT’ range for all acquisitions since the last C
LEAR S WEEPS operation.
Trend Function
Trend graph of the value of the top calculated for pit that is within the
selected ‘nT’ range for all acquisitions since last C
LEAR S WEEPS
operation.