Teledyne LeCroy PeRT3 Phoenix System - Manual (Page 98)

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Teledyne LeCroy Analysis Graph Types
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.
Figure 10.7: Tools Panel
When a region of the graph is selected using the Region Select tool, the user is given the
options of creating a new test script to test just the region selected, to adjust a manual
test case to cover just the region selected, or to zoom in to that specific area of the chart.
Figure 10.8: Region Select Tool
Analysis Graph Types
Within the Graph Type panel of the Analysis tab, there are multiple choices of ways to
view your data. Each of these will be demonstrated using an example test, which in this
case is a typical jitter tolerance test for a receiver system, for PCI Express over four
channels. This test script is called "PCIe 5.0G x4 JTOL". This script determines the
performance envelope of a receiver system by testing BER with added signal impairments
of high frequency sinusoidal jitter of 1 to 100 MHz at signal amplitudes from 0 to 180 ps.
This creates a matrix of individual test cases that collectively describe the performance
envelope of the receiver system.
The choices for displaying the data are as follows: