Teledyne-lecroy AORM - Advanced Optical Recording Measurements Manual de usuario descargar pdf (Pagina 62)

60 ISSUED: June 2013 923133 Rev A

PBASE PIT BASE

Description

Pit Base provides a best estimate of the bottom amplitude of a space. The concept of the base

calculation is to automatically provide the same measurement that would be obtained from a persistence

plot. The base of each space is determined through histogramming techniques described under Base

and Top Calculation Details.

When pbase is configured as a custom parameter, all bases within the single nT or range of nT are

calculated. Histogramming or trending such a configuration would result in one value per space 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 base calculations. ‘nT Table’ mode provides an average base

measurement for each n index.

Display Options

ORM parameter calculations can be displayed, histogrammed, and trended in a variety of ways.

The following table provides a concise description of the value or values displayed using each

approach.

DISPLAY TYPE VALUE DISPLAYED

Parameter Statistics Off

All values of the base for all spaces within the selected ‘nT’

range for the last acquisition.

Parameter Statistics On

Average, minimum, maximum, and sigma of the base for all

spaces that are within the selected ‘nT’ range for all acquisitions

since the last C

LEAR SWEEPS operation.

nT Table

List of values of the average base for each group of spaces of

common ‘nT’ width for the last acquisition.

Histogram Function

Histogram graph of the value of the base for all spaces within

the selected ‘nT’ range for all acquisitions since the last C

LEAR

SWEEPS operation.

Trend Function

Trend graph of the value of the base calculated for space that is

within the selected ‘nT’ range for all acquisitions since the last

LEAR SWEEPS operation.

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Teledyne-lecroy AORM - Advanced Optical Recording Measurements Manual de usuario Pagina 62