X-Stream Operator’s Manual
WM-OM-E Rev I 397
ltot Local Time Over Threshold
Definition
The time a local feature spends over a user specified percentage of its
peak-to-trough amplitude.
Description
The peak-to-trough height of a local feature is measured. The time the
local feature spends over a user specified percent of the peak-to-trough
height is then determined. The average for all local features in a waveform
is displayed as ltot. Provided for histograms is the time spent over the
threshold by each local feature between the parameter cursors.
Parameter Settings
Selecting this parameter from the Measure menus displays hysteresis
and level percent menus. The associated fields allow you to set values in
those menus: a specified number of vertical divisions or a percentage of
the peak-to-peak height of the local feature.
Example
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