Teledyne LeCroy PeRT3 Eagle Systems - Manual (Page 58)

Version 1.6 PeRT 3 Eagle User Manual
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LeCroy Corporation
Data Set
The Data Set panel allows the user to select between distinct sets of data.
For example, if a JTOL test was run twice while varying the frequency and
amplitude of sinusoidal jitter, once with SSC on and a second time with
SSC off, this would form two distinct sets of data within the same Test
Report. The user would then be able to specify which of the two data sets
to graph using the drop-down menu in the Test Case field for the channel
they want to graph.
The user can also specify which channel data to graph by clicking on the
channel select button in the Data Set panel.
Signal Parameters
When the user selects a specific test case to graph, the Signal Parameters panel will
display the values of the signal parameters for the selected test case.
Depending on the data contained in the selected test case and how the data is being
graphed, the user may be able to further refine what is being graphed. For example, in
the case mentioned above of the two JTOL tests, if they are graphed as scatter graphs
or two-parameter graphs, selecting the test case will completely specify the graph.
However, graphing the same test case as a single parameter graph, such as sinusoidal
jitter amplitude vs. BER, specifies a whole range of graphs (one for each sinusoidal jitter
frequency) which the user can select between by selecting a specific sinusoidal jitter
frequency in the Signal Parameters panel.
Tools
The Tools panel provides a set of tools for examining graphs in detail. The
tools include Region Select, which allows the user to select a specific region
on the chart; Scroll Graph, which allows the user to scroll around a magnified
graph; Zoom In to magnify sections of graphs; and Zoom Out to reduce
magnification.