Teledyne LeCroy WaveRunner МXi-A Getting Started Manual - Manual (Page 68)

WaveRunner Xi-A and MXi-A Oscilloscopes
60 922138-00 Rev A
Persistence Setup
The analog Persistence feature displays your waveform and reveals its
anomalies for a repetitive signal. Use Persistence to accumulate on-screen
points from many acquisitions to see your signal change over time. The
instrument persistence modes show the most frequent signal path three-
dimensionally in intensities of the same color, or graded in a spectrum of
colors.
Saturation Level
When you select Analog mode from the Persistence dialog, each
channel is assigned a single color. As a persistence data map
develops, different intensities of that color are assigned to the
range between a minimum and a maximum population. The
maximum population automatically gets the highest intensity, the
minimum population gets the lowest intensity, and intermediate
populations get intensities in between these extremes.
See the on-line Help for more information.
Color mode persistence, selected by touching Color, works on the
same principle as the Analog persistence feature, but instead uses
the entire color spectrum to map signal intensity: violet for
minimum population, red for maximum population. A saturation
level of 100% spreads the intensity variation across the entire
distribution. At lower saturation levels, the intensity saturates
(becomes the brightest color) at the percentage value specified.
Lowering this percentage causes the pixels to be saturated at a
lower population, and makes visible those rarely hit pixels not
seen at higher percentages.
3-Dimensional Persistence
By selecting 3d, you can create a topographical view of your
waveform from a selection of shadings, textures, and hues. The
advantage of the topographical view is that areas of highest and
lowest intensity are shown as peaks and valleys, in addition to
color or brightness. The shape of the peaks (pointed or flat) can
reveal further information about the frequency of occurrences in
your waveform.