User`s guide

Statistical information from these histograms is plotted relative to the corresponding period. If Time view
is chosen, the mean (from each histogram) is plotted on the y-axis relative to the period after the arm (x-
axis). Similarly, other Views will plot the Pk-Pk or 1-sigma values on the y-axis.
The Arm must be periodic in order for the measurement process to work. A single power up or a single
frequency lock will not allow this process to occur. Using a signal from a pulse generator works well as
the Arm and lock signal.
Locktime can also display measurements as a function of time by selecting that option in the View
window. Also the user may want to view the derivative of each consecutive measurement with respect to
the last measurement. To do that, the user can select Show Derivative on the Dialog Bar. At the bottom
of the graph are the functions and jitter statistics for the displayed data.
The Locktime tool arming uses a 19-21ns Arm Delay.
One of the main features of GigaView software is the ability to view any of the measurement functions
using the Locktime tool. For example, in addition to period and frequency being viewed, pulse width,
rise/fall times and the delay between channels can also be viewed for these pattern dependent
anomalies.
Section 4 - GigaView © WAVECREST Corporation 2005
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